Make the transition to ArrayBuffer backed Arrays (#70)

* Traverse base classes when resolving overloads
* Implement preliminary TypedArray accessors
* Extract decorator flags from common flags to make space
* Add '**' overload
* Implement basic explicit inlining
* Support inlining of instance methods
* Reduce number of required locals when inlining
* Implement inlining of operator overloads
* Fix issues when inlining generic functions

src/ast.ts

@@ -198,32 +198,9 @@ export abstract class Node {
     stmt.range = range;
     stmt.name = expression; expression.parent = stmt;
     stmt.arguments = args; if (args) setParent(args, stmt);
-    if (expression.kind == NodeKind.IDENTIFIER) {
+    stmt.decoratorKind = expression.kind == NodeKind.IDENTIFIER
-      switch ((<IdentifierExpression>expression).text) {
+      ? stringToDecoratorKind((<IdentifierExpression>expression).text)
-        case "global": {
+      : DecoratorKind.CUSTOM;
-          stmt.decoratorKind = DecoratorKind.GLOBAL;
-          break;
-        }
-        case "operator": {
-          stmt.decoratorKind = DecoratorKind.OPERATOR;
-          break;
-        }
-        case "unmanaged": {
-          stmt.decoratorKind = DecoratorKind.UNMANAGED;
-          break;
-        }
-        case "offset": {
-          stmt.decoratorKind = DecoratorKind.OFFSET;
-          break;
-        }
-        default: {
-          stmt.decoratorKind = DecoratorKind.CUSTOM;
-          break;
-        }
-      }
-    } else {
-      stmt.decoratorKind = DecoratorKind.CUSTOM;
-    }
     return stmt;
   }
 
@@ -1075,7 +1052,22 @@ export enum DecoratorKind {
   GLOBAL,
   OPERATOR,
   UNMANAGED,
-  OFFSET
+  SEALED,
+  INLINE,
+  PRECOMPUTE
+}
+
+/** Returns the decorator kind represented by the specified string. */
+export function stringToDecoratorKind(str: string): DecoratorKind {
+  switch (str) {
+    case "global": return DecoratorKind.GLOBAL;
+    case "operator": return DecoratorKind.OPERATOR;
+    case "unmanaged": return DecoratorKind.UNMANAGED;
+    case "sealed": return DecoratorKind.SEALED;
+    case "inline": return DecoratorKind.INLINE;
+    case "precompute": return DecoratorKind.PRECOMPUTE;
+    default: return DecoratorKind.CUSTOM;
+  }
 }
 
 /** Represents a decorator. */

src/builtins.ts

@@ -43,7 +43,8 @@ import {
   Global,
   FunctionPrototype,
   Class,
-  Field
+  Field,
+  OperatorKind
 } from "./program";
 
 /** Compiles a get of a built-in global. */
@@ -146,7 +147,7 @@ export function compileCall(
       compiler.currentType = Type.bool;
       if (!type) return module.createUnreachable();
       let classType = type.classReference;
-      return classType != null && classType.prototype.fnIndexedGet != null
+      return classType != null && classType.lookupOverload(OperatorKind.INDEXED_GET) != null
         ? module.createI32(1)
         : module.createI32(0);
     }
@@ -1738,6 +1739,7 @@ export function compileCall(
           DiagnosticCode.Expected_0_type_arguments_but_got_1,
           reportNode.range, "1", typeArguments ? typeArguments.length.toString(10) : "0"
         );
+        return module.createUnreachable();
       }
       let byteSize = (<Type[]>typeArguments)[0].byteSize;
       let alignLog2: i32;

src/diagnosticMessages.generated.ts

@@ -16,11 +16,13 @@ export enum DiagnosticCode {
   Basic_type_0_cannot_be_nullable = 204,
   Cannot_export_a_mutable_global = 205,
   Compiling_constant_with_non_constant_initializer_as_mutable = 206,
-  Structs_cannot_extend_classes_and_vice_versa = 207,
+  Unmanaged_classes_cannot_extend_managed_classes_and_vice_versa = 207,
-  Structs_cannot_implement_interfaces = 208,
+  Unmanaged_classes_cannot_implement_interfaces = 208,
   Invalid_regular_expression_flags = 209,
   Implementation_0_must_match_the_signature_1 = 210,
   Class_0_is_sealed_and_cannot_be_extended = 211,
+  Decorator_0_is_not_valid_here = 212,
+  Duplicate_decorator = 213,
   Unterminated_string_literal = 1002,
   Identifier_expected = 1003,
   _0_expected = 1005,
@@ -122,11 +124,13 @@ export function diagnosticCodeToString(code: DiagnosticCode): string {
     case 204: return "Basic type '{0}' cannot be nullable.";
     case 205: return "Cannot export a mutable global.";
     case 206: return "Compiling constant with non-constant initializer as mutable.";
-    case 207: return "Structs cannot extend classes and vice-versa.";
+    case 207: return "Unmanaged classes cannot extend managed classes and vice-versa.";
-    case 208: return "Structs cannot implement interfaces.";
+    case 208: return "Unmanaged classes cannot implement interfaces.";
     case 209: return "Invalid regular expression flags.";
     case 210: return "Implementation '{0}' must match the signature '{1}'.";
     case 211: return "Class '{0}' is sealed and cannot be extended.";
+    case 212: return "Decorator '{0}' is not valid here.";
+    case 213: return "Duplicate decorator.";
     case 1002: return "Unterminated string literal.";
     case 1003: return "Identifier expected.";
     case 1005: return "'{0}' expected.";

src/diagnosticMessages.json

@@ -8,11 +8,13 @@
   "Basic type '{0}' cannot be nullable.": 204,
   "Cannot export a mutable global.": 205,
   "Compiling constant with non-constant initializer as mutable.": 206,
-  "Structs cannot extend classes and vice-versa.": 207,
+  "Unmanaged classes cannot extend managed classes and vice-versa.": 207,
-  "Structs cannot implement interfaces.": 208,
+  "Unmanaged classes cannot implement interfaces.": 208,
   "Invalid regular expression flags.": 209,
   "Implementation '{0}' must match the signature '{1}'.": 210,
   "Class '{0}' is sealed and cannot be extended.": 211,
+  "Decorator '{0}' is not valid here.": 212,
+  "Duplicate decorator.": 213,
 
   "Unterminated string literal.": 1002,
   "Identifier expected.": 1003,

src/diagnostics.ts

@@ -206,12 +206,8 @@ export function formatDiagnosticContext(range: Range, useColors: bool = false):
   var len = text.length;
   var start = range.start;
   var end = range.end;
-  while (start > 0 && !isLineBreak(text.charCodeAt(start - 1))) {
+  while (start > 0 && !isLineBreak(text.charCodeAt(start - 1))) start--;
-    start--;
+  while (end < len && !isLineBreak(text.charCodeAt(end))) end++;
-  }
-  while (end < len && !isLineBreak(text.charCodeAt(end))) {
-    end++;
-  }
   var sb: string[] = [
     "\n ",
     text.substring(start, end),
@@ -225,9 +221,7 @@ export function formatDiagnosticContext(range: Range, useColors: bool = false):
   if (range.start == range.end) {
     sb.push("^");
   } else {
-    while (start++ < range.end) {
+    while (start++ < range.end) sb.push("~");
-      sb.push("~");
-    }
   }
   if (useColors) sb.push(COLOR_RESET);
   return sb.join("");

src/extra/ast.ts

@@ -75,7 +75,8 @@ import {
   ParameterNode,
   ParameterKind,
   ExportMember,
-  SwitchCase
+  SwitchCase,
+  DeclarationStatement
 } from "../ast";
 
 import {
@@ -912,7 +913,6 @@ export class ASTBuilder {
   }
 
   visitFieldDeclaration(node: FieldDeclaration): void {
-    this.serializeBuiltinDecorators(node);
     var decorators = node.decorators;
     if (decorators) {
       for (let i = 0, k = decorators.length; i < k; ++i) {
@@ -961,7 +961,6 @@ export class ASTBuilder {
 
   visitFunctionDeclaration(node: FunctionDeclaration): void {
     var sb = this.sb;
-    this.serializeBuiltinDecorators(node);
     var decorators = node.decorators;
     if (decorators) {
       for (let i = 0, k = decorators.length; i < k; ++i) {
@@ -1098,7 +1097,6 @@ export class ASTBuilder {
   }
 
   visitInterfaceDeclaration(node: InterfaceDeclaration): void {
-    this.serializeBuiltinDecorators(node);
     var decorators = node.decorators;
     if (decorators) {
       for (let i = 0, k = decorators.length; i < k; ++i) {
@@ -1138,7 +1136,6 @@ export class ASTBuilder {
   }
 
   visitMethodDeclaration(node: MethodDeclaration): void {
-    this.serializeBuiltinDecorators(node);
     var decorators = node.decorators;
     if (decorators) {
       for (let i = 0, k = decorators.length; i < k; ++i) {
@@ -1155,7 +1152,6 @@ export class ASTBuilder {
   }
 
   visitNamespaceDeclaration(node: NamespaceDeclaration): void {
-    this.serializeBuiltinDecorators(node);
     var decorators = node.decorators;
     if (decorators) {
       for (let i = 0, k = decorators.length; i < k; ++i) {
@@ -1315,7 +1311,6 @@ export class ASTBuilder {
   }
 
   visitVariableStatement(node: VariableStatement): void {
-    this.serializeBuiltinDecorators(node);
     var decorators = node.decorators;
     if (decorators) {
       for (let i = 0, k = decorators.length; i < k; ++i) {
@@ -1398,19 +1393,6 @@ export class ASTBuilder {
     }
   }
 
-  serializeBuiltinDecorators(node: Node): void {
-    var sb = this.sb;
-    var indentLevel = this.indentLevel;
-    if (node.is(CommonFlags.GLOBAL)) {
-      sb.push("@global\n");
-      indent(sb, indentLevel);
-    }
-    if (node.is(CommonFlags.UNMANAGED)) {
-      sb.push("@unmanaged\n");
-      indent(sb, indentLevel);
-    }
-  }
-
   serializeExternalModifiers(node: Node): void {
     var sb = this.sb;
     if (node.is(CommonFlags.EXPORT)) {

src/module.ts

@@ -1099,6 +1099,45 @@ export class Relooper {
   }
 }
 
+// export function hasSideEffects(expr: ExpressionRef): bool {
+//   switch (_BinaryenExpressionGetId(expr)) {
+//     case ExpressionId.GetLocal:
+//     case ExpressionId.GetGlobal:
+//     case ExpressionId.Const:
+//     case ExpressionId.Nop:
+//     case ExpressionId.Unreachable: {
+//       return false;
+//     }
+//     case ExpressionId.Block: {
+//       for (let i = 0, k = _BinaryenBlockGetNumChildren(expr); i < k; ++i) {
+//         if (hasSideEffects(_BinaryenBlockGetChild(expr, i))) return true;
+//       }
+//       return false;
+//     }
+//     case ExpressionId.If: {
+//       return hasSideEffects(_BinaryenIfGetCondition(expr))
+//           || hasSideEffects(_BinaryenIfGetIfTrue(expr))
+//           || hasSideEffects(_BinaryenIfGetIfFalse(expr));
+//     }
+//     case ExpressionId.Unary: {
+//       return hasSideEffects(_BinaryenUnaryGetValue(expr));
+//     }
+//     case ExpressionId.Binary: {
+//       return hasSideEffects(_BinaryenBinaryGetLeft(expr))
+//           || hasSideEffects(_BinaryenBinaryGetRight(expr));
+//     }
+//     case ExpressionId.Drop: {
+//       return hasSideEffects(_BinaryenDropGetValue(expr));
+//     }
+//     case ExpressionId.Select: {
+//       return hasSideEffects(_BinaryenSelectGetIfTrue(expr))
+//           || hasSideEffects(_BinaryenSelectGetIfFalse(expr))
+//           || hasSideEffects(_BinaryenSelectGetCondition(expr));
+//     }
+//   }
+//   return true;
+// }
+
 // helpers
 // can't do stack allocation here: STACKTOP is a global in WASM but a hidden variable in asm.js
 

src/parser.ts

@@ -27,7 +27,6 @@ import {
 } from "./util";
 
 import {
-
   Node,
   NodeKind,
   Source,
@@ -162,23 +161,10 @@ export class Parser extends DiagnosticEmitter {
     while (tn.skip(Token.AT)) {
       if (startPos < 0) startPos = tn.tokenPos;
       let decorator = this.parseDecorator(tn);
-      if (!decorator) break;
+      if (!decorator) {
-      let name = decorator.name;
+        this.skipStatement(tn);
-      if (name.kind == NodeKind.IDENTIFIER) {
-        let text = (<IdentifierExpression>name).text;
-        if (text == "global") {
-          flags |= CommonFlags.GLOBAL;
         continue;
       }
-        if (text == "unmananged") {
-          flags |= CommonFlags.UNMANAGED;
-          continue;
-        }
-        if (text == "sealed") {
-          flags |= CommonFlags.SEALED;
-          continue;
-        }
-      }
       if (!decorators) decorators = [];
       decorators.push(decorator);
     }

src/tokenizer.ts

@@ -166,7 +166,7 @@ export enum Token {
   ENDOFFILE
 }
 
-export function tokenFomKeyword(text: string): Token {
+export function tokenFromKeyword(text: string): Token {
   switch (text) {
     case "abstract": return Token.ABSTRACT;
     case "as": return Token.AS;
@@ -805,7 +805,7 @@ export class Tokenizer extends DiagnosticEmitter {
                 }
               }
               let keywordText = text.substring(posBefore, this.pos);
-              let keywordToken = tokenFomKeyword(keywordText);
+              let keywordToken = tokenFromKeyword(keywordText);
               if (
                 keywordToken != Token.INVALID &&
                 !(preferIdentifier && tokenIsAlsoIdentifier(keywordToken))

src/types.ts

@@ -80,7 +80,9 @@ export const enum TypeFlags {
   /** Is a reference type. */
   REFERENCE = 1 << 8,
   /** Is a nullable type. */
-  NULLABLE = 1 << 9
+  NULLABLE = 1 << 9,
+  /** Is the special 'this' type. */
+  THIS = 1 << 10
 }
 
 /** Represents a resolved type. */
@@ -102,6 +104,8 @@ export class Type {
   nullableType: Type | null = null;
   /** Respective non-nullable type, if nullable. */
   nonNullableType: Type;
+  /** Respective special 'this' type. */
+  thisType: Type | null = null;
 
   /** Constructs a new resolved type. */
   constructor(kind: TypeKind, flags: TypeFlags, size: i32) {
@@ -157,6 +161,18 @@ export class Type {
     return this.nullableType;
   }
 
+  /** Composes the respective 'this' type of this type. */
+  asThis(): Type {
+    var thisType = this.thisType;
+    if (thisType) return thisType;
+    thisType = new Type(this.kind, this.flags | TypeFlags.THIS, this.size);
+    thisType.classReference = this.classReference;
+    thisType.nullableType = this.nullableType;
+    thisType.nonNullableType = this.nonNullableType;
+    this.thisType = thisType;
+    return thisType;
+  }
+
   /** Tests if a value of this type is assignable to a target of the specified type. */
   isAssignableTo(target: Type, signednessIsImportant: bool = false): bool {
     var currentClass: Class | null;

std/assembly.d.ts

@@ -298,6 +298,8 @@ declare abstract class TypedArray<T> implements ArrayBufferView<T> {
   readonly byteLength: i32;
   /** The length (in elements). */
   readonly length: i32;
+  /** Returns a new TypedArray of this type on the same ArrayBuffer from begin inclusive to end exclusive. */
+  subarray(begin?: i32, end?: i32): this;
 }
 
 /** An array of twos-complement 8-bit signed integers. */
@@ -534,5 +536,5 @@ declare function unmanaged(target: Function): any;
 /** Annotates a class as being sealed / non-derivable. */
 declare function sealed(target: Function): any;
 
-/** Annotates a class field with an explicit offset. */
+/** Annotates a method or function as always inlined. */
-declare function offset(offset: usize): any;
+declare function inline(target: any, propertyKey: any, descriptor: any): any;

std/assembly/array.ts

@@ -1,3 +1,12 @@
+import {
+  MAX_BLENGTH,
+  HEADER_SIZE as HEADER_SIZE_AB,
+  allocUnsafe,
+  reallocUnsafe,
+  loadUnsafe,
+  storeUnsafe
+} from "./internal/arraybuffer";
+
 import {
   defaultComparator,
   insertionSort,
@@ -6,147 +15,130 @@ import {
 
 export class Array<T> {
 
-  __memory: usize;
+  /* @internal */ buffer_: ArrayBuffer;
-  __capacity: i32;  // capped to [0, 0x7fffffff]
+  /* @internal */ length_: i32;
-  __length: i32;    // capped to [0, __capacity]
 
-  private __grow(newCapacity: i32): void {
+  constructor(length: i32 = 0) {
-    var oldMemory = this.__memory;
+    const MAX_LENGTH = MAX_BLENGTH >>> alignof<T>();
-    var oldCapacity = this.__capacity;
+    if (<u32>length > <u32>MAX_LENGTH) throw new RangeError("Invalid array length");
-    assert(newCapacity > oldCapacity);
+    this.buffer_ = allocUnsafe(length << alignof<T>());
-    var newMemory = allocate_memory(<usize>newCapacity * sizeof<T>());
+    this.length_ = length;
-    if (oldMemory) {
-      move_memory(newMemory, oldMemory, <usize>oldCapacity * sizeof<T>());
-      free_memory(oldMemory);
-    }
-    this.__memory = newMemory;
-    this.__capacity = newCapacity;
   }
 
-  constructor(capacity: i32 = 0) {
+  get length(): i32 {
-    if (capacity < 0) throw new RangeError("Invalid array length");
+    return this.length_;
-    this.__memory = capacity
+  }
-      ? allocate_memory(<usize>capacity * sizeof<T>())
+
-      : 0;
+  set length(length: i32) {
-    this.__capacity = capacity;
+    var buffer = this.buffer_;
-    this.__length = capacity;
+    var capacity = buffer.byteLength >>> alignof<T>();
+    if (<u32>length > <u32>capacity) {
+      const MAX_LENGTH = MAX_BLENGTH >>> alignof<T>();
+      if (<u32>length > <u32>MAX_LENGTH) throw new RangeError("Invalid array length");
+      buffer = reallocUnsafe(buffer, length << alignof<T>());
+      this.buffer_ = buffer;
+    }
+    this.length_ = length;
   }
 
   every(callbackfn: (element: T, index: i32, array: Array<T>) => bool): bool {
-    var toIndex: i32 = this.__length;
+    var buffer = this.buffer_;
-    var i: i32 = 0;
+    for (let index = 0, toIndex = this.length_; index < toIndex && index < this.length_; ++index) {
-    while (i < toIndex && i < this.__length) {
+      if (!callbackfn(loadUnsafe<T>(buffer, index), index, this)) return false;
-      if (!callbackfn(load<T>(this.__memory + <usize>i * sizeof<T>()), i, this)) {
-        return false;
-      }
-      i += 1;
     }
     return true;
   }
 
   findIndex(predicate: (element: T, index: i32, array: Array<T>) => bool): i32 {
-    var toIndex: i32 = this.__length;
+    var buffer = this.buffer_;
-    var i: i32 = 0;
+    for (let index = 0, toIndex = this.length_; index < toIndex && index < this.length_; ++index) {
-    while (i < toIndex && i < this.__length) {
+      if (predicate(loadUnsafe<T>(buffer, index), index, this)) return index;
-      if (predicate(load<T>(this.__memory + <usize>i * sizeof<T>()), i, this)) {
-        return i;
-      }
-      i += 1;
     }
     return -1;
   }
 
-  get length(): i32 {
-    return this.__length;
-  }
-
-  set length(length: i32) {
-    if (length < 0) throw new RangeError("Invalid array length");
-    if (length > this.__capacity) this.__grow(max(length, this.__capacity << 1));
-    this.__length = length;
-  }
-
   @operator("[]")
   private __get(index: i32): T {
-    if (<u32>index >= <u32>this.__capacity) throw new Error("Index out of bounds");
+    var buffer = this.buffer_;
-    return load<T>(this.__memory + <usize>index * sizeof<T>());
+    var capacity = buffer.byteLength >>> alignof<T>();
+    if (<u32>index >= <u32>capacity) throw new Error("Index out of bounds");
+    // return load<T>(changetype<usize>(buffer) + (<usize>index << alignof<T>()), HEADER_SIZE_AB);
+    return loadUnsafe<T>(buffer, index);
   }
 
   @operator("[]=")
   private __set(index: i32, value: T): void {
-    if (index < 0) throw new Error("Index out of bounds");
+    var buffer = this.buffer_;
-    var capacity = this.__capacity;
+    var capacity = buffer.byteLength >>> alignof<T>();
-    if (index >= capacity) this.__grow(max(index + 1, capacity << 1));
+    if (<u32>index >= <u32>capacity) {
-    store<T>(this.__memory + <usize>index * sizeof<T>(), value);
+      const MAX_LENGTH = MAX_BLENGTH >>> alignof<T>();
+      if (<u32>index >= <u32>MAX_LENGTH) throw new Error("Invalid array length");
+      buffer = reallocUnsafe(buffer, (index + 1) << alignof<T>());
+      this.buffer_ = buffer;
+      this.length_ = index + 1;
+    }
+    // store<T>(changetype<usize>(buffer) + (<usize>index << alignof<T>()), value, HEADER_SIZE_AB);
+    storeUnsafe<T>(buffer, index, value);
   }
 
   includes(searchElement: T, fromIndex: i32 = 0): bool {
-    var length = this.__length;
+    var length = this.length_;
     if (length == 0 || fromIndex >= length) return false;
-    if (fromIndex < 0) {
+    if (fromIndex < 0) fromIndex = max(length + fromIndex, 0);
-      fromIndex = length + fromIndex;
+    var buffer = this.buffer_;
-      if (fromIndex < 0) {
-        fromIndex = 0;
-      }
-    }
     while (fromIndex < length) {
-      if (load<T>(this.__memory + <usize>fromIndex * sizeof<T>()) == searchElement) return true;
+      if (loadUnsafe<T>(buffer, fromIndex) == searchElement) return true;
       ++fromIndex;
     }
     return false;
   }
 
   indexOf(searchElement: T, fromIndex: i32 = 0): i32 {
-    var length = this.__length;
+    var length = this.length_;
-    if (length == 0 || fromIndex >= length) {
+    if (length == 0 || fromIndex >= length) return -1;
-      return -1;
+    if (fromIndex < 0) fromIndex = max(length + fromIndex, 0);
-    }
+    var buffer = this.buffer_;
-    if (fromIndex < 0) {
-      fromIndex = length + fromIndex;
-      if (fromIndex < 0) {
-        fromIndex = 0;
-      }
-    }
-    var memory = this.__memory;
     while (fromIndex < length) {
-      if (load<T>(memory + <usize>fromIndex * sizeof<T>()) == searchElement) return fromIndex;
+      if (loadUnsafe<T>(buffer, fromIndex) == searchElement) return fromIndex;
       ++fromIndex;
     }
     return -1;
   }
 
-  lastIndexOf(searchElement: T, fromIndex: i32 = this.__length): i32 {
+  lastIndexOf(searchElement: T, fromIndex: i32 = this.length_): i32 {
-    var length = this.__length;
+    var length = this.length_;
     if (length == 0) return -1;
-    if (fromIndex < 0) {
+    if (fromIndex < 0) fromIndex = length + fromIndex; // no need to clamp
-      fromIndex = length + fromIndex;
+    else if (fromIndex >= length) fromIndex = length - 1;
-    } else if (fromIndex >= length) {
+    var buffer = this.buffer_;
-      fromIndex = length - 1;
+    while (fromIndex >= 0) {                           // ^
-    }
+      if (loadUnsafe<T>(buffer, fromIndex) == searchElement) return fromIndex;
-    var memory = this.__memory;
-    while (fromIndex >= 0) {
-      if (load<T>(memory + <usize>fromIndex * sizeof<T>()) == searchElement) return fromIndex;
       --fromIndex;
     }
     return -1;
   }
 
   push(element: T): i32 {
-    var capacity = this.__capacity;
+    var length = this.length_;
-    var length = this.__length;
+    var buffer = this.buffer_;
-    if (length == capacity) {
+    var capacity = buffer.byteLength >>> alignof<T>();
-      this.__grow(capacity ? capacity << 1 : 1);
+    var newLength = length + 1; // safe only if length is checked
+    if (<u32>length >= <u32>capacity) {
+      const MAX_LENGTH = MAX_BLENGTH >>> alignof<T>();
+      if (<u32>length >= <u32>MAX_LENGTH) throw new Error("Invalid array length");
+      buffer = reallocUnsafe(buffer, newLength << alignof<T>());
+      this.buffer_ = buffer;
     }
-    store<T>(this.__memory + <usize>length * sizeof<T>(), element);
+    this.length_ = newLength;
-    this.__length = ++length;
+    storeUnsafe<T>(buffer, length, element);
-    return length;
+    return newLength;
   }
 
   pop(): T {
-    var length = this.__length;
+    var length = this.length_;
     if (length < 1) throw new RangeError("Array is empty");
-    var element = load<T>(this.__memory + <usize>--length * sizeof<T>());
+    var element = loadUnsafe<T>(this.buffer_, --length);
-    this.__length = length;
+    this.length_ = length;
     return element;
   }
 
@@ -154,158 +146,119 @@ export class Array<T> {
     callbackfn: (previousValue: U, currentValue: T, currentIndex: i32, array: Array<T>) => U,
     initialValue: U
   ): U {
-    var accumulator: U = initialValue;
+    var accum = initialValue;
-    var toIndex: i32 = this.__length;
+    var buffer = this.buffer_;
-    var i: i32 = 0;
+    for (let index = 0, toIndex = this.length_; index < toIndex && index < this.length_; ++index) {
-    while (i < toIndex && i < /* might change */ this.__length) {
+      accum = callbackfn(accum, loadUnsafe<T>(buffer, index), index, this);
-      accumulator = callbackfn(accumulator, load<T>(this.__memory + <usize>i * sizeof<T>()), i, this);
-      i += 1;
     }
-    return accumulator;
+    return accum;
   }
 
   shift(): T {
-    var length = this.__length;
+    var length = this.length_;
     if (length < 1) throw new RangeError("Array is empty");
-    var memory = this.__memory;
+    var buffer = this.buffer_;
-    var capacity = this.__capacity;
+    var element = loadUnsafe<T>(buffer, 0);
-    var element = load<T>(memory);
+    var lastIndex = length - 1;
     move_memory(
-      memory,
+      changetype<usize>(buffer) + HEADER_SIZE_AB,
-      memory + sizeof<T>(),
+      changetype<usize>(buffer) + HEADER_SIZE_AB + sizeof<T>(),
-      <usize>(capacity - 1) * sizeof<T>()
+      <usize>lastIndex << alignof<T>()
     );
-    set_memory(
+    storeUnsafe<T>(buffer, lastIndex, isReference<T>() ? null : <T>0);
-      memory + <usize>(capacity - 1) * sizeof<T>(),
+    this.length_ = lastIndex;
-      0,
-      sizeof<T>()
-    );
-    this.__length = length - 1;
     return element;
   }
 
   some(callbackfn: (element: T, index: i32, array: Array<T>) => bool): bool {
-    var toIndex: i32 = this.__length;
+    var buffer = this.buffer_;
-    var i: i32 = 0;
+    for (let index = 0, toIndex = this.length_; index < toIndex && index < this.length_; ++index) {
-    while (i < toIndex && i < /* might change */ this.__length) {
+      if (callbackfn(loadUnsafe<T>(buffer, index), index, this)) return true;
-      if (callbackfn(load<T>(this.__memory + <usize>i * sizeof<T>()), i, this)) return true;
-      i += 1;
     }
     return false;
   }
 
   unshift(element: T): i32 {
-    var memory = this.__memory;
+    var buffer = this.buffer_;
-    var capacity = this.__capacity;
+    var capacity = buffer.byteLength >>> alignof<T>();
-    var length = this.__length;
+    var length = this.length_;
-    if (this.__length == capacity) {
+    var newLength = length + 1; // safe only if length is checked
-      // inlined __grow (avoids moving twice)
+    if (<u32>length >= <u32>capacity) {
-      let newCapacity: i32 = capacity ? capacity << 1 : 1;
+      const MAX_LENGTH = MAX_BLENGTH >>> alignof<T>();
-      assert(newCapacity > capacity);
+      if (<u32>length >= <u32>MAX_LENGTH) throw new Error("Invalid array length");
-      let newMemory = allocate_memory(<usize>newCapacity * sizeof<T>());
+      buffer = reallocUnsafe(buffer, newLength << alignof<T>());
-      if (memory) {
+      capacity = buffer.byteLength >>> alignof<T>();
-        move_memory(
+      this.buffer_ = buffer;
-          newMemory + sizeof<T>(),
-          memory,
-          <usize>capacity * sizeof<T>()
-        );
-        free_memory(memory);
     }
-      this.__memory = newMemory;
-      this.__capacity = newCapacity;
-      memory = newMemory;
-    } else {
     move_memory(
-        memory + sizeof<T>(),
+      changetype<usize>(buffer) + HEADER_SIZE_AB + sizeof<T>(),
-        memory,
+      changetype<usize>(buffer) + HEADER_SIZE_AB,
-        <usize>capacity * sizeof<T>()
+      <usize>(capacity - 1) << alignof<T>()
     );
-    }
+    storeUnsafe<T>(buffer, 0, element);
-    store<T>(memory, element);
+    this.length_ = newLength;
-    this.__length = ++length;
+    return newLength;
-    return length;
   }
 
   slice(begin: i32 = 0, end: i32 = i32.MAX_VALUE): Array<T> {
-    var length = this.__length;
+    var length = this.length_;
-    if (begin < 0) {
+    if (begin < 0) begin = max(length + begin, 0);
-      begin = length + begin;
+    else if (begin > length) begin = length;
-      if (begin < 0) {
+    if (end < 0) end = length + end; // no need to clamp
-        begin = 0;
+    else if (end > length) end = length;
-      }
+    if (end < begin) end = begin;    // ^
-    } else if (begin > length) {
+    var newLength = end - begin;
-      begin = length;
+    assert(newLength >= 0);
-    }
+    var sliced = new Array<T>(newLength);
-    if (end < 0) {
+    if (newLength) {
-      end = length + end;
-    } else if (end > length) {
-      end = length;
-    }
-    if (end < begin) {
-      end = begin;
-    }
-    var capacity = end - begin;
-    assert(capacity >= 0);
-    var sliced = new Array<T>(capacity);
-    if (capacity) {
       move_memory(
-        sliced.__memory,
+        changetype<usize>(sliced.buffer_) + HEADER_SIZE_AB,
-        this.__memory + <usize>begin * sizeof<T>(),
+        changetype<usize>(this.buffer_) + HEADER_SIZE_AB + (<usize>begin << alignof<T>()),
-        <usize>capacity * sizeof<T>()
+        <usize>newLength << alignof<T>()
       );
     }
     return sliced;
   }
 
   splice(start: i32, deleteCount: i32 = i32.MAX_VALUE): void {
-    if (deleteCount < 1) {
+    if (deleteCount < 1) return;
-      return;
+    var length = this.length_;
-    }
+    if (start < 0) start = max(length + start, 0);
-    var length = this.__length;
+    if (start >= length) return;
-    if (start < 0) {
-      start = length + start;
-      if (start < 0) {
-        start = 0;
-      } else if (start >= length) {
-        return;
-      }
-    } else if (start >= length) {
-      return;
-    }
     deleteCount = min(deleteCount, length - start);
-    var memory = this.__memory;
+    var buffer = this.buffer_;
     move_memory(
-      memory + <usize>start * sizeof<T>(),
+      changetype<usize>(buffer) + HEADER_SIZE_AB + (<usize>start << alignof<T>()),
-      memory + <usize>(start + deleteCount) * sizeof<T>(),
+      changetype<usize>(buffer) + HEADER_SIZE_AB + (<usize>(start + deleteCount) << alignof<T>()),
-      <usize>deleteCount * sizeof<T>()
+      <usize>deleteCount << alignof<T>()
     );
-    this.__length = length - deleteCount;
+    this.length_ = length - deleteCount;
   }
 
   reverse(): Array<T> {
-    var memory = this.__memory;
+    var buffer = this.buffer_;
-    for (let front: usize = 0, back: usize = <usize>this.__length - 1; front < back; ++front, --back) {
+    for (let front = 0, back = this.length_ - 1; front < back; ++front, --back) {
-      let temp = load<T>(memory + front * sizeof<T>());
+      let temp = loadUnsafe<T>(buffer, front);
-      store<T>(memory + front * sizeof<T>(), load<T>(memory + back * sizeof<T>()));
+      storeUnsafe<T>(buffer, front, loadUnsafe<T>(buffer, back));
-      store<T>(memory + back * sizeof<T>(), temp);
+      storeUnsafe<T>(buffer, back, temp);
     }
     return this;
   }
 
   sort(comparator: (a: T, b: T) => i32 = defaultComparator<T>()): Array<T> {
-    var len = this.length;
+    var length = this.length_;
-    if (len <= 1) return this;
+    if (length <= 1) return this;
-    if (len == 2) {
+    var buffer = this.buffer_;
-      let memory = this.__memory;
+    if (length == 2) {
-      let a = load<T>(memory, sizeof<T>()); // var a = <T>arr[1];
+      let a = loadUnsafe<T>(buffer, 1); // a = arr[1]
-      let b = load<T>(memory, 0);           // var b = <T>arr[0];
+      let b = loadUnsafe<T>(buffer, 0); // b = arr[0]
       if (comparator(a, b) < 0) {
-        store<T>(memory, b, sizeof<T>()); // arr[1] = b;
+        storeUnsafe<T>(buffer, 1, b);   // arr[1] = b;
-        store<T>(memory, a, 0);           // arr[0] = a;
+        storeUnsafe<T>(buffer, 0, a);   // arr[0] = a;
       }
       return this;
     }
-    return len <= 256
+    return length < 256
       ? insertionSort<T>(this, comparator)
       : weakHeapSort<T>(this, comparator);
   }

std/assembly/arraybuffer.ts

@@ -28,3 +28,12 @@ export class ArrayBuffer {
     return buffer;
   }
 }
+
+export declare interface FastArray<T> {}
+
+export declare interface ArrayBufferView<T> {
+  readonly buffer: ArrayBuffer;
+  readonly byteOffset: i32;
+  readonly byteLength: i32;
+  readonly length: i32;
+}

std/assembly/internal/array.ts

@@ -1,4 +1,11 @@
-import { Array } from "../array";
+import {
+  loadUnsafe,
+  storeUnsafe
+} from "./arraybuffer";
+
+import {
+  Array
+} from "../array";
 
 /** Obtains the default comparator for the specified type. */
 export function defaultComparator<T>(): (a: T, b: T) => i32 {
@@ -7,26 +14,23 @@ export function defaultComparator<T>(): (a: T, b: T) => i32 {
 
 /** Sorts an Array with the 'Insertion Sort' algorithm. */
 export function insertionSort<T>(arr: Array<T>, comparator: (a: T, b: T) => i32): Array<T> {
-  const shiftT = alignof<T>();
+  var buffer = arr.buffer_;
-
+  for (let i: i32 = 0, length: i32 = arr.length; i < length; i++) {
-  var memory = arr.__memory;
+    let a = loadUnsafe<T>(buffer, i);                     // a = arr[i]
-  for (let i: i32 = 0, len: i32 = arr.length; i < len; i++) {
-    let a = load<T>(memory + (i << shiftT));              // a = arr[i]
     let j = i - 1;
     while (j >= 0) {
-      let b = load<T>(memory + (j << shiftT));            // b = arr[j]
+      let b = loadUnsafe<T>(buffer, j);                   // b = arr[j]
       if (comparator(a, b) < 0) {
-        store<T>(memory + ((j-- + 1) << shiftT), b);      // arr[j + 1] = b
+        storeUnsafe<T>(buffer, j-- + 1, b);               // arr[j + 1] = b
       } else break;
     }
-    store<T>(memory + ((j + 1) << shiftT), a);            // arr[j + 1] = a
+    storeUnsafe<T>(buffer, j + 1, a);                     // arr[j + 1] = a
   }
   return arr;
 }
 
 /** Sorts an Array with the 'Weak Heap Sort' algorithm. */
 export function weakHeapSort<T>(arr: Array<T>, comparator: (a: T, b: T) => i32): Array<T> {
-  const shiftT  = alignof<T>();
   const shift32 = alignof<i32>();
 
   var length = arr.length;
@@ -36,43 +40,43 @@ export function weakHeapSort<T>(arr: Array<T>, comparator: (a: T, b: T) => i32):
 
   // see: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.21.1863&rep=rep1&type=pdf
 
-  var memory = arr.__memory;
+  var buffer = arr.buffer_;
   for (let i = length - 1; i > 0; i--) {
     let j = i;
     while ((j & 1) == (load<i32>(bitset + (j >> 6 << shift32)) >> (j >> 1 & 31) & 1)) j >>= 1;
 
     let p = j >> 1;
-    let a = load<T>(memory + (p << shiftT));              // a = arr[p]
+    let a = loadUnsafe<T>(buffer, p);                     // a = arr[p]
-    let b = load<T>(memory + (i << shiftT));              // b = arr[i]
+    let b = loadUnsafe<T>(buffer, i);                     // b = arr[i]
     if (comparator(a, b) < 0) {
       store<i32>(
         bitset + (i >> 5 << shift32),
         load<i32>(bitset + (i >> 5 << shift32)) ^ (1 << (i & 31))
       );
-      store<T>(memory + (i << shiftT), a);                // arr[i] = a
+      storeUnsafe<T>(buffer, i, a);                       // arr[i] = a
-      store<T>(memory + (p << shiftT), b);                // arr[p] = b
+      storeUnsafe<T>(buffer, p, b);                       // arr[p] = b
     }
   }
 
   for (let i = length - 1; i >= 2; i--) {
-    let a = load<T>(memory, 0);                           // a = arr[0]
+    let a = loadUnsafe<T>(buffer, 0);                     // a = arr[0]
-    store<T>(memory, load<T>(memory + (i << shiftT)), 0); // arr[0] = arr[1]
+    storeUnsafe<T>(buffer, 0, loadUnsafe<T>(buffer, i));  // arr[0] = arr[i]
-    store<T>(memory + (i << shiftT), a);                  // arr[1] = a
+    storeUnsafe<T>(buffer, i, a);                         // arr[i] = a
 
     let x = 1, y: i32;
     while ((y = (x << 1) + ((load<i32>(bitset + (x >> 5 << shift32)) >> (x & 31)) & 1)) < i) x = y;
 
     while (x > 0) {
-      a = load<T>(memory, 0);                             // a = arr[0]
+      a = loadUnsafe<T>(buffer, 0);                       // a = arr[0]
-      let b = load<T>(memory + (x << shiftT));            // b = arr[x]
+      let b = loadUnsafe<T>(buffer, x);                   // b = arr[x]
 
       if (comparator(a, b) < 0) {
         store<i32>(
           bitset + (x >> 5 << shift32),
           load<i32>(bitset + (x >> 5 << shift32)) ^ (1 << (x & 31))
         );
-        store<T>(memory + (x << shiftT), a);              // arr[x] = a
+        storeUnsafe<T>(buffer, x, a);                     // arr[x] = a
-        store<T>(memory, b, 0);                           // arr[0] = b
+        storeUnsafe<T>(buffer, 0, b);                     // arr[0] = b
       }
       x >>= 1;
     }
@@ -80,8 +84,8 @@ export function weakHeapSort<T>(arr: Array<T>, comparator: (a: T, b: T) => i32):
 
   free_memory(bitset);
 
-  var t = load<T>(memory, sizeof<T>());                   // t = arr[1]
+  var t = loadUnsafe<T>(buffer, 1);                       // t = arr[1]
-  store<T>(memory, load<T>(memory, 0), sizeof<T>());      // arr[1] = arr[0]
+  storeUnsafe<T>(buffer, 1, loadUnsafe<T>(buffer, 0));    // arr[1] = arr[0]
-  store<T>(memory, t, 0);                                 // arr[0] = t
+  storeUnsafe<T>(buffer, 0, t);                           // arr[0] = t
   return arr;
 }

std/assembly/internal/arraybuffer.ts

@@ -30,11 +30,10 @@ export function reallocUnsafe(buffer: ArrayBuffer, newByteLength: i32): ArrayBuf
   var oldByteLength = buffer.byteLength;
   if (newByteLength > oldByteLength) {
     assert(newByteLength <= MAX_BLENGTH);
-    let oldSize = computeSize(oldByteLength);
+    if (newByteLength <= <i32>(computeSize(oldByteLength) - HEADER_SIZE)) { // fast path: zero out additional space
-    if (<i32>(oldSize - HEADER_SIZE) <= newByteLength) { // fast path: zero out additional space
       store<i32>(changetype<usize>(buffer), newByteLength, offsetof<ArrayBuffer>("byteLength"));
       set_memory(
-        changetype<usize>(buffer) + HEADER_SIZE + oldByteLength,
+        changetype<usize>(buffer) + HEADER_SIZE + <usize>oldByteLength,
         0,
         <usize>(newByteLength - oldByteLength)
       );
@@ -43,7 +42,12 @@ export function reallocUnsafe(buffer: ArrayBuffer, newByteLength: i32): ArrayBuf
       move_memory(
         changetype<usize>(newBuffer) + HEADER_SIZE,
         changetype<usize>(buffer) + HEADER_SIZE,
-        <usize>newByteLength
+        <usize>oldByteLength
+      );
+      set_memory(
+        changetype<usize>(newBuffer) + HEADER_SIZE + <usize>oldByteLength,
+        0,
+        <usize>(newByteLength - oldByteLength)
       );
       return newBuffer;
     }
@@ -55,10 +59,22 @@ export function reallocUnsafe(buffer: ArrayBuffer, newByteLength: i32): ArrayBuf
   return buffer;
 }
 
-/** Common typed array interface. Not a global object. */
+@inline
-// export declare interface ArrayBufferView<T> {
+export function loadUnsafe<T>(buffer: ArrayBuffer, index: i32): T {
-//   readonly buffer: ArrayBuffer;
+  return load<T>(changetype<usize>(buffer) + (<usize>index << alignof<T>()), HEADER_SIZE);
-//   readonly byteOffset: i32;
+}
-//   readonly byteLength: i32;
+
-//   readonly length: i32;
+@inline
-// }
+export function storeUnsafe<T>(buffer: ArrayBuffer, index: i32, value: T): void {
+  store<T>(changetype<usize>(buffer) + (<usize>index << alignof<T>()), value, HEADER_SIZE);
+}
+
+@inline
+export function loadUnsafeWithOffset<T>(buffer: ArrayBuffer, index: i32, byteOffset: i32): T {
+  return load<T>(changetype<usize>(buffer) + <usize>byteOffset + (<usize>index << alignof<T>()), HEADER_SIZE);
+}
+
+@inline
+export function storeUnsafeWithOffset<T>(buffer: ArrayBuffer, index: i32, value: T, byteOffset: i32): void {
+  store<T>(changetype<usize>(buffer) + <usize>byteOffset + (<usize>index << alignof<T>()), value, HEADER_SIZE);
+}

std/assembly/internal/typedarray.ts

@@ -1,12 +1,17 @@
 import {
-  HEADER_SIZE,
+  HEADER_SIZE as HEADER_SIZE_AB,
   MAX_BLENGTH,
-  allocUnsafe
+  allocUnsafe,
-  // ArrayBufferView
+  loadUnsafeWithOffset,
+  storeUnsafeWithOffset
 } from "./arraybuffer";
 
+import {
+  ArrayBufferView
+} from "../arraybuffer";
+
 /** Typed array base class. Not a global object. */
-export abstract class TypedArray<T> /* implements ArrayBufferView<T> */ {
+export abstract class TypedArray<T> implements ArrayBufferView<T> {
 
   readonly buffer: ArrayBuffer;
   readonly byteOffset: i32;
@@ -17,21 +22,45 @@ export abstract class TypedArray<T> /* implements ArrayBufferView<T> */ {
     if (<u32>length > MAX_LENGTH) throw new RangeError("Invalid typed array length");
     var byteLength = length << alignof<T>();
     var buffer = allocUnsafe(byteLength);
-    set_memory(changetype<usize>(buffer) + HEADER_SIZE, 0, <usize>byteLength);
+    set_memory(changetype<usize>(buffer) + HEADER_SIZE_AB, 0, <usize>byteLength);
     this.buffer = buffer;
     this.byteOffset = 0;
     this.byteLength = byteLength;
   }
 
   get length(): i32 {
-    return this.byteLength >> alignof<T>();
+    return (this.byteLength - this.byteOffset) >> alignof<T>();
   }
 
-  // @operator("[]") - maybe injected through ArrayBufferView?
+  @operator("[]")
-
+  private __get(index: i32): T {
-  // @operator("[]=") - maybe injected through ArrayBufferView?
+    var byteOffset = this.byteOffset;
-
+    var elementLength = (this.byteLength - byteOffset) >>> alignof<T>();
-  // copyWithin(target: i32, start: i32, end: i32 = 0x7fffffff): TypedArray<T>
+    if (<u32>index >= <u32>elementLength) throw new Error("Index out of bounds");
-
+    return loadUnsafeWithOffset<T>(this.buffer, index, byteOffset);
-  // subarray(begin: i32 = 0, end: i32 = 0x7fffffff): TypedArray<T>
+  }
+
+  @operator("[]=")
+  private __set(index: i32, value: T): void {
+    var byteOffset = this.byteOffset;
+    var elementLength = (this.byteLength - byteOffset) >>> alignof<T>();
+    if (<u32>index >= <u32>elementLength) throw new Error("Index out of bounds");
+    storeUnsafeWithOffset<T>(this.buffer, index, value, byteOffset);
+  }
+
+  // copyWithin(target: i32, start: i32, end: i32 = this.length): this
+
+  @inline
+  subarray(begin: i32 = 0, end: i32 = 0x7fffffff): TypedArray<T> {
+    var length = this.length;
+    if (begin < 0) begin = max(length + begin, 0);
+    else begin = min(begin, length);
+    if (end < 0) end = max(length + end, begin);
+    else end = max(min(end, length), begin);
+    var slice = allocate_memory(offsetof<this>());
+    store<usize>(slice, this.buffer, offsetof<this>("buffer"));
+    store<i32>(slice, begin << alignof<T>(), offsetof<this>("byteOffset"));
+    store<i32>(slice, end << alignof<T>(), offsetof<this>("byteLength"));
+    return changetype<this>(slice);
+  }
 }

std/assembly/typedarray.ts

@@ -4,40 +4,80 @@ import {
 
 export class Int8Array extends TypedArray<i8> {
   static readonly BYTES_PER_ELEMENT: usize = sizeof<i8>();
+
+  subarray(begin: i32 = 0, end: i32 = this.length): Int8Array {
+    return changetype<Int8Array>(super.subarray(begin, end));
+  }
 }
 
 export class Uint8Array extends TypedArray<u8> {
   static readonly BYTES_PER_ELEMENT: usize = sizeof<u8>();
+
+  subarray(begin: i32 = 0, end: i32 = this.length): Uint8Array {
+    return changetype<Uint8Array>(super.subarray(begin, end));
+  }
 }
 
 export class Int16Array extends TypedArray<i16> {
   static readonly BYTES_PER_ELEMENT: usize = sizeof<i16>();
+
+  subarray(begin: i32 = 0, end: i32 = this.length): Int16Array {
+    return changetype<Int16Array>(super.subarray(begin, end));
+  }
 }
 
 export class Uint16Array extends TypedArray<u16> {
   static readonly BYTES_PER_ELEMENT: usize = sizeof<u16>();
+
+  subarray(begin: i32 = 0, end: i32 = this.length): Uint16Array {
+    return changetype<Uint16Array>(super.subarray(begin, end));
+  }
 }
 
 export class Int32Array extends TypedArray<i32> {
   static readonly BYTES_PER_ELEMENT: usize = sizeof<i32>();
+
+  subarray(begin: i32 = 0, end: i32 = this.length): Int32Array {
+    return changetype<Int32Array>(super.subarray(begin, end));
+  }
 }
 
 export class Uint32Array extends TypedArray<u32> {
   static readonly BYTES_PER_ELEMENT: usize = sizeof<u32>();
+
+  subarray(begin: i32 = 0, end: i32 = this.length): Uint32Array {
+    return changetype<Uint32Array>(super.subarray(begin, end));
+  }
 }
 
 export class Int64Array extends TypedArray<i64> {
   static readonly BYTES_PER_ELEMENT: usize = sizeof<i64>();
+
+  subarray(begin: i32 = 0, end: i32 = this.length): Int64Array {
+    return changetype<Int64Array>(super.subarray(begin, end));
+  }
 }
 
 export class Uint64Array extends TypedArray<u64> {
   static readonly BYTES_PER_ELEMENT: usize = sizeof<u64>();
+
+  subarray(begin: i32 = 0, end: i32 = this.length): Uint64Array {
+    return changetype<Uint64Array>(super.subarray(begin, end));
+  }
 }
 
 export class Float32Array extends TypedArray<f32> {
   static readonly BYTES_PER_ELEMENT: usize = sizeof<f32>();
+
+  subarray(begin: i32 = 0, end: i32 = this.length): Float32Array {
+    return changetype<Float32Array>(super.subarray(begin, end));
+  }
 }
 
 export class Float64Array extends TypedArray<f64> {
   static readonly BYTES_PER_ELEMENT: usize = sizeof<f64>();
+
+  subarray(begin: i32 = 0, end: i32 = this.length): Float64Array {
+    return changetype<Float64Array>(super.subarray(begin, end));
+  }
 }

tests/allocators/index.js

@@ -20,7 +20,7 @@ function test(file) {
     return String.fromCharCode.apply(String, str);
   }
 
-  require("./runner")(exports, 50, 20000);
+  require("./runner")(exports, 20, 20000);
 
   console.log("mem final: " + exports.memory.buffer.byteLength);
   console.log();

tests/compiler/if.optimized.wat

@@ -33,9 +33,17 @@
    (return
     (i32.const 1)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 37)
+     (i32.const 4)
+    )
     (unreachable)
    )
   )
+ )
  (func $start (; 4 ;) (type $v)
   (if
    (call $if/ifThenElse

tests/compiler/if.untouched.wat

@@ -57,9 +57,17 @@
    (return
     (i32.const 1)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 37)
+     (i32.const 4)
+    )
     (unreachable)
    )
   )
+ )
  (func $start (; 5 ;) (type $v)
   (if
    (i32.eqz

tests/compiler/inlining.optimized.wat

@@ -2,16 +2,199 @@
  (type $i (func (result i32)))
  (type $iiiiv (func (param i32 i32 i32 i32)))
  (type $v (func))
+ (type $ii (func (param i32) (result i32)))
  (import "env" "abort" (func $abort (param i32 i32 i32 i32)))
+ (global $argumentCount (mut i32) (i32.const 0))
+ (table 1 1 anyfunc)
+ (elem (i32.const 0) $inlining/test_funcs~anonymous|0)
  (memory $0 1)
  (data (i32.const 4) "\0b\00\00\00i\00n\00l\00i\00n\00i\00n\00g\00.\00t\00s")
  (export "test" (func $inlining/test))
  (export "memory" (memory $0))
+ (export "table" (table $0))
  (start $start)
  (func $inlining/test (; 1 ;) (type $i) (result i32)
   (i32.const 3)
  )
- (func $start (; 2 ;) (type $v)
+ (func $inlining/test_funcs~anonymous|0 (; 2 ;) (type $ii) (param $0 i32) (result i32)
+  (get_local $0)
+ )
+ (func $inlining/test_funcs (; 3 ;) (type $v)
+  (local $0 i32)
+  (if
+   (i32.ne
+    (block $inlining/func_ii|inlined.0 (result i32)
+     (drop
+      (br_if $inlining/func_ii|inlined.0
+       (i32.const 1)
+       (i32.eq
+        (tee_local $0
+         (i32.const 42)
+        )
+        (i32.const 42)
+       )
+      )
+     )
+     (select
+      (i32.const 2)
+      (i32.const 3)
+      (i32.lt_s
+       (get_local $0)
+       (i32.const 42)
+      )
+     )
+    )
+    (i32.const 1)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 60)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.ne
+    (block $inlining/func_ii|inlined.1 (result i32)
+     (drop
+      (br_if $inlining/func_ii|inlined.1
+       (i32.const 1)
+       (i32.eq
+        (tee_local $0
+         (i32.const 41)
+        )
+        (i32.const 42)
+       )
+      )
+     )
+     (select
+      (i32.const 2)
+      (i32.const 3)
+      (i32.lt_s
+       (get_local $0)
+       (i32.const 42)
+      )
+     )
+    )
+    (i32.const 2)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 61)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.ne
+    (block $inlining/func_ii|inlined.2 (result i32)
+     (drop
+      (br_if $inlining/func_ii|inlined.2
+       (i32.const 1)
+       (i32.eq
+        (tee_local $0
+         (i32.const 43)
+        )
+        (i32.const 42)
+       )
+      )
+     )
+     (select
+      (i32.const 2)
+      (i32.const 3)
+      (i32.lt_s
+       (get_local $0)
+       (i32.const 42)
+      )
+     )
+    )
+    (i32.const 3)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 62)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.ne
+    (tee_local $0
+     (i32.add
+      (tee_local $0
+       (i32.const 2)
+      )
+      (i32.const 1)
+     )
+    )
+    (i32.const 3)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 65)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.ne
+    (tee_local $0
+     (i32.add
+      (tee_local $0
+       (i32.const 3)
+      )
+      (i32.const 1)
+     )
+    )
+    (i32.const 4)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 66)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (block (result i32)
+    (set_global $argumentCount
+     (i32.const 1)
+    )
+    (i32.ne
+     (call_indirect (type $ii)
+      (i32.const 2)
+      (i32.const 0)
+     )
+     (i32.const 2)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 68)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+ )
+ (func $start (; 4 ;) (type $v)
   (if
    (i32.ne
     (call $inlining/test)
@@ -21,11 +204,12 @@
     (call $abort
      (i32.const 0)
      (i32.const 4)
-     (i32.const 8)
+     (i32.const 10)
      (i32.const 0)
     )
     (unreachable)
    )
   )
+  (call $inlining/test_funcs)
  )
 )

tests/compiler/inlining.ts

@@ -1,3 +1,5 @@
+// Constant inlining
+
 const constantGlobal = 1;
 
 export function test(): i32 {
@@ -6,3 +8,67 @@ export function test(): i32 {
 }
 
 assert(test() == 3);
+
+// Function inlining
+
+@inline
+function func_ii(a: i32): i32 {
+  if (a == 42) return 1;
+  return a < 42 ? 2 : 3;
+}
+
+@inline
+function func_ii_opt(a: i32 = 0): i32 {
+  return a;
+}
+
+@inline
+function func_ii_loc(a: i32): i32 {
+  var b = a;
+  var e: i32;
+  if (true) {
+    let c = b;
+    let d = c;
+    e = d + 1;
+  }
+  return e;
+}
+
+@inline
+function func_iv(a: i32): void {
+}
+
+@inline
+function func_fe(): (a: i32) => i32 {
+   return (a: i32): i32 => a;
+}
+
+
+class Foo {
+  @inline
+  static method_static(a: i32, b: i32 = 2): i32 {
+    return a + b;
+  }
+  @inline
+  method_this(a: i32, b: i32 = 3): Foo {
+    return this;
+  }
+}
+
+function test_funcs(): void {
+  var a: f32 = -1, b: f64 = -2;
+  assert(func_ii(42) == 1);
+  assert(func_ii(41) == 2);
+  assert(func_ii(43) == 3);
+  assert(func_ii_opt() == 0);
+  assert(func_ii_opt(1) == 1);
+  assert(func_ii_loc(2) == 3);
+  assert(func_ii_loc(3) == 4);
+  func_iv(0);
+  assert(func_fe()(2) == 2);
+  assert(Foo.method_static(42) == 44);
+  var foo = changetype<Foo>(123);
+  assert(changetype<usize>(foo.method_this(43)) == 123);
+}
+
+test_funcs();

tests/compiler/inlining.untouched.wat

@@ -2,13 +2,18 @@
  (type $i (func (result i32)))
  (type $iiiiv (func (param i32 i32 i32 i32)))
  (type $v (func))
+ (type $ii (func (param i32) (result i32)))
  (import "env" "abort" (func $abort (param i32 i32 i32 i32)))
  (global $inlining/constantGlobal i32 (i32.const 1))
+ (global $argumentCount (mut i32) (i32.const 0))
  (global $HEAP_BASE i32 (i32.const 32))
+ (table 1 1 anyfunc)
+ (elem (i32.const 0) $inlining/test_funcs~anonymous|0)
  (memory $0 1)
  (data (i32.const 4) "\0b\00\00\00i\00n\00l\00i\00n\00i\00n\00g\00.\00t\00s\00")
  (export "test" (func $inlining/test))
  (export "memory" (memory $0))
+ (export "table" (table $0))
  (start $start)
  (func $inlining/test (; 1 ;) (type $i) (result i32)
   (nop)
@@ -19,7 +24,383 @@
    )
   )
  )
- (func $start (; 2 ;) (type $v)
+ (func $inlining/test_funcs~anonymous|0 (; 2 ;) (type $ii) (param $0 i32) (result i32)
+  (get_local $0)
+ )
+ (func $inlining/test_funcs (; 3 ;) (type $v)
+  (local $0 f32)
+  (local $1 f64)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (local $6 i32)
+  (local $7 i32)
+  (block
+   (set_local $0
+    (f32.const -1)
+   )
+   (set_local $1
+    (f64.const -2)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (block $inlining/func_ii|inlined.0 (result i32)
+      (set_local $2
+       (i32.const 42)
+      )
+      (if
+       (i32.eq
+        (get_local $2)
+        (i32.const 42)
+       )
+       (br $inlining/func_ii|inlined.0
+        (i32.const 1)
+       )
+      )
+      (br $inlining/func_ii|inlined.0
+       (if (result i32)
+        (i32.lt_s
+         (get_local $2)
+         (i32.const 42)
+        )
+        (i32.const 2)
+        (i32.const 3)
+       )
+      )
+     )
+     (i32.const 1)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 60)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (block $inlining/func_ii|inlined.1 (result i32)
+      (set_local $2
+       (i32.const 41)
+      )
+      (if
+       (i32.eq
+        (get_local $2)
+        (i32.const 42)
+       )
+       (br $inlining/func_ii|inlined.1
+        (i32.const 1)
+       )
+      )
+      (br $inlining/func_ii|inlined.1
+       (if (result i32)
+        (i32.lt_s
+         (get_local $2)
+         (i32.const 42)
+        )
+        (i32.const 2)
+        (i32.const 3)
+       )
+      )
+     )
+     (i32.const 2)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 61)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (block $inlining/func_ii|inlined.2 (result i32)
+      (set_local $2
+       (i32.const 43)
+      )
+      (if
+       (i32.eq
+        (get_local $2)
+        (i32.const 42)
+       )
+       (br $inlining/func_ii|inlined.2
+        (i32.const 1)
+       )
+      )
+      (br $inlining/func_ii|inlined.2
+       (if (result i32)
+        (i32.lt_s
+         (get_local $2)
+         (i32.const 42)
+        )
+        (i32.const 2)
+        (i32.const 3)
+       )
+      )
+     )
+     (i32.const 3)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 62)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (block $inlining/func_ii_opt|inlined.0 (result i32)
+      (set_local $2
+       (i32.const 0)
+      )
+      (br $inlining/func_ii_opt|inlined.0
+       (get_local $2)
+      )
+     )
+     (i32.const 0)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 63)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (block $inlining/func_ii_opt|inlined.1 (result i32)
+      (set_local $2
+       (i32.const 1)
+      )
+      (br $inlining/func_ii_opt|inlined.1
+       (get_local $2)
+      )
+     )
+     (i32.const 1)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 64)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (block $inlining/func_ii_loc|inlined.0 (result i32)
+      (set_local $2
+       (i32.const 2)
+      )
+      (set_local $3
+       (get_local $2)
+      )
+      (nop)
+      (if
+       (i32.const 1)
+       (block
+        (set_local $5
+         (get_local $3)
+        )
+        (set_local $6
+         (get_local $5)
+        )
+        (set_local $4
+         (i32.add
+          (get_local $6)
+          (i32.const 1)
+         )
+        )
+       )
+      )
+      (br $inlining/func_ii_loc|inlined.0
+       (get_local $4)
+      )
+     )
+     (i32.const 3)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 65)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (block $inlining/func_ii_loc|inlined.1 (result i32)
+      (set_local $4
+       (i32.const 3)
+      )
+      (set_local $3
+       (get_local $4)
+      )
+      (nop)
+      (if
+       (i32.const 1)
+       (block
+        (set_local $6
+         (get_local $3)
+        )
+        (set_local $5
+         (get_local $6)
+        )
+        (set_local $2
+         (i32.add
+          (get_local $5)
+          (i32.const 1)
+         )
+        )
+       )
+      )
+      (br $inlining/func_ii_loc|inlined.1
+       (get_local $2)
+      )
+     )
+     (i32.const 4)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 66)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (block $inlining/func_iv|inlined.0
+   (set_local $2
+    (i32.const 0)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (block (result i32)
+      (set_global $argumentCount
+       (i32.const 1)
+      )
+      (call_indirect (type $ii)
+       (i32.const 2)
+       (block $inlining/func_fe|inlined.0 (result i32)
+        (br $inlining/func_fe|inlined.0
+         (i32.const 0)
+        )
+       )
+      )
+     )
+     (i32.const 2)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 68)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (block $inlining/Foo.method_static|inlined.0 (result i32)
+      (set_local $2
+       (i32.const 42)
+      )
+      (set_local $3
+       (i32.const 2)
+      )
+      (br $inlining/Foo.method_static|inlined.0
+       (i32.add
+        (get_local $2)
+        (get_local $3)
+       )
+      )
+     )
+     (i32.const 44)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 69)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+  (set_local $7
+   (i32.const 123)
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (block $inlining/Foo#method_this|inlined.0 (result i32)
+      (set_local $3
+       (get_local $7)
+      )
+      (set_local $2
+       (i32.const 43)
+      )
+      (set_local $4
+       (i32.const 3)
+      )
+      (br $inlining/Foo#method_this|inlined.0
+       (get_local $3)
+      )
+     )
+     (i32.const 123)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 71)
+     (i32.const 2)
+    )
+    (unreachable)
+   )
+  )
+ )
+ (func $start (; 4 ;) (type $v)
   (if
    (i32.eqz
     (i32.eq
@@ -31,11 +412,12 @@
     (call $abort
      (i32.const 0)
      (i32.const 4)
-     (i32.const 8)
+     (i32.const 10)
      (i32.const 0)
     )
     (unreachable)
    )
   )
+  (call $inlining/test_funcs)
  )
 )

tests/compiler/std/array-access.optimized.wat

@@ -1,13 +1,14 @@
 (module
  (type $ii (func (param i32) (result i32)))
  (type $iii (func (param i32 i32) (result i32)))
- (type $iiii (func (param i32 i32 i32) (result i32)))
  (type $iiiiv (func (param i32 i32 i32 i32)))
+ (type $iiii (func (param i32 i32 i32) (result i32)))
  (import "env" "abort" (func $abort (param i32 i32 i32 i32)))
  (global $argumentCount (mut i32) (i32.const 0))
  (memory $0 1)
- (data (i32.const 8) "\0e\00\00\00~\00l\00i\00b\00/\00s\00t\00r\00i\00n\00g\00.\00t\00s")
+ (data (i32.const 4) "\0d\00\00\00~\00l\00i\00b\00/\00a\00r\00r\00a\00y\00.\00t\00s")
- (data (i32.const 40) "\04\00\00\00n\00u\00l\00l")
+ (data (i32.const 40) "\0e\00\00\00~\00l\00i\00b\00/\00s\00t\00r\00i\00n\00g\00.\00t\00s")
+ (data (i32.const 72) "\04\00\00\00n\00u\00l\00l")
  (export "i32ArrayArrayElementAccess" (func $std/array-access/i32ArrayArrayElementAccess))
  (export "stringArrayPropertyAccess" (func $std/array-access/stringArrayPropertyAccess))
  (export "stringArrayMethodCall" (func $std/array-access/stringArrayMethodCall))
@@ -15,20 +16,34 @@
  (export "stringArrayArrayMethodCall" (func $std/array-access/stringArrayArrayMethodCall))
  (export "memory" (memory $0))
  (func $~lib/array/Array<Array<i32>>#__get (; 1 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
   (if
    (i32.ge_u
     (get_local $1)
-    (i32.load offset=4
+    (i32.shr_u
+     (i32.load
+      (tee_local $2
+       (i32.load
         (get_local $0)
        )
       )
+     )
+     (i32.const 2)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 64)
+     (i32.const 37)
+    )
     (unreachable)
    )
-  (i32.load
-   (i32.add
-    (i32.load
-     (get_local $0)
   )
+  (i32.load offset=8
+   (i32.add
+    (get_local $2)
     (i32.shl
      (get_local $1)
      (i32.const 2)
@@ -124,7 +139,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 8)
+     (i32.const 40)
      (i32.const 234)
      (i32.const 4)
     )
@@ -136,7 +151,7 @@
     (get_local $1)
    )
    (set_local $1
-    (i32.const 40)
+    (i32.const 72)
    )
   )
   (if
@@ -234,7 +249,7 @@
     (get_local $0)
     (i32.const 0)
    )
-   (i32.const 4)
+   (i32.const 36)
    (i32.const 0)
   )
  )
@@ -261,7 +276,7 @@
     )
     (i32.const 1)
    )
-   (i32.const 4)
+   (i32.const 36)
    (i32.const 0)
   )
  )

tests/compiler/std/array-access.untouched.wat

@@ -2,16 +2,21 @@
  (type $ii (func (param i32) (result i32)))
  (type $iii (func (param i32 i32) (result i32)))
  (type $i (func (result i32)))
- (type $iiii (func (param i32 i32 i32) (result i32)))
  (type $iiiiv (func (param i32 i32 i32 i32)))
+ (type $iiii (func (param i32 i32 i32) (result i32)))
  (import "env" "abort" (func $abort (param i32 i32 i32 i32)))
+ (global $~lib/internal/allocator/AL_BITS i32 (i32.const 3))
+ (global $~lib/internal/allocator/AL_SIZE i32 (i32.const 8))
+ (global $~lib/internal/allocator/AL_MASK i32 (i32.const 7))
+ (global $~lib/internal/arraybuffer/HEADER_SIZE i32 (i32.const 8))
  (global $~lib/internal/string/HEADER_SIZE i32 (i32.const 4))
  (global $argumentCount (mut i32) (i32.const 0))
- (global $HEAP_BASE i32 (i32.const 52))
+ (global $HEAP_BASE i32 (i32.const 84))
  (memory $0 1)
- (data (i32.const 4) "\00\00\00\00")
+ (data (i32.const 4) "\0d\00\00\00~\00l\00i\00b\00/\00a\00r\00r\00a\00y\00.\00t\00s\00")
- (data (i32.const 8) "\0e\00\00\00~\00l\00i\00b\00/\00s\00t\00r\00i\00n\00g\00.\00t\00s\00")
+ (data (i32.const 36) "\00\00\00\00")
- (data (i32.const 40) "\04\00\00\00n\00u\00l\00l\00")
+ (data (i32.const 40) "\0e\00\00\00~\00l\00i\00b\00/\00s\00t\00r\00i\00n\00g\00.\00t\00s\00")
+ (data (i32.const 72) "\04\00\00\00n\00u\00l\00l\00")
  (export "i32ArrayArrayElementAccess" (func $std/array-access/i32ArrayArrayElementAccess))
  (export "stringArrayPropertyAccess" (func $std/array-access/stringArrayPropertyAccess))
  (export "stringArrayMethodCall" (func $std/array-access/stringArrayMethodCall))
@@ -19,48 +24,110 @@
  (export "stringArrayArrayMethodCall" (func $std/array-access/stringArrayArrayMethodCall))
  (export "memory" (memory $0))
  (func $~lib/array/Array<Array<i32>>#__get (; 1 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (set_local $2
+   (i32.load
+    (get_local $0)
+   )
+  )
+  (set_local $3
+   (i32.shr_u
+    (i32.load
+     (get_local $2)
+    )
+    (i32.const 2)
+   )
+  )
   (if
    (i32.ge_u
     (get_local $1)
-    (i32.load offset=4
+    (get_local $3)
-     (get_local $0)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 64)
+     (i32.const 37)
     )
     (unreachable)
    )
-  (return
-   (i32.load
-    (i32.add
-     (i32.load
-      (get_local $0)
   )
-     (i32.mul
+  (return
+   (block $~lib/internal/arraybuffer/loadUnsafe<Array<i32>>|inlined.0 (result i32)
+    (set_local $4
+     (get_local $2)
+    )
+    (set_local $5
      (get_local $1)
-      (i32.const 4)
+    )
+    (br $~lib/internal/arraybuffer/loadUnsafe<Array<i32>>|inlined.0
+     (i32.load offset=8
+      (i32.add
+       (get_local $4)
+       (i32.shl
+        (get_local $5)
+        (i32.const 2)
+       )
+      )
      )
     )
    )
   )
  )
  (func $~lib/array/Array<i32>#__get (; 2 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (set_local $2
+   (i32.load
+    (get_local $0)
+   )
+  )
+  (set_local $3
+   (i32.shr_u
+    (i32.load
+     (get_local $2)
+    )
+    (i32.const 2)
+   )
+  )
   (if
    (i32.ge_u
     (get_local $1)
-    (i32.load offset=4
+    (get_local $3)
-     (get_local $0)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 64)
+     (i32.const 37)
     )
     (unreachable)
    )
-  (return
-   (i32.load
-    (i32.add
-     (i32.load
-      (get_local $0)
   )
-     (i32.mul
+  (return
+   (block $~lib/internal/arraybuffer/loadUnsafe<i32>|inlined.0 (result i32)
+    (set_local $4
+     (get_local $2)
+    )
+    (set_local $5
      (get_local $1)
-      (i32.const 4)
+    )
+    (br $~lib/internal/arraybuffer/loadUnsafe<i32>|inlined.0
+     (i32.load offset=8
+      (i32.add
+       (get_local $4)
+       (i32.shl
+        (get_local $5)
+        (i32.const 2)
+       )
+      )
      )
     )
    )
@@ -78,24 +145,55 @@
   )
  )
  (func $~lib/array/Array<String>#__get (; 4 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (set_local $2
+   (i32.load
+    (get_local $0)
+   )
+  )
+  (set_local $3
+   (i32.shr_u
+    (i32.load
+     (get_local $2)
+    )
+    (i32.const 2)
+   )
+  )
   (if
    (i32.ge_u
     (get_local $1)
-    (i32.load offset=4
+    (get_local $3)
-     (get_local $0)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 64)
+     (i32.const 37)
     )
     (unreachable)
    )
-  (return
-   (i32.load
-    (i32.add
-     (i32.load
-      (get_local $0)
   )
-     (i32.mul
+  (return
+   (block $~lib/internal/arraybuffer/loadUnsafe<String>|inlined.0 (result i32)
+    (set_local $4
+     (get_local $2)
+    )
+    (set_local $5
      (get_local $1)
-      (i32.const 4)
+    )
+    (br $~lib/internal/arraybuffer/loadUnsafe<String>|inlined.0
+     (i32.load offset=8
+      (i32.add
+       (get_local $4)
+       (i32.shl
+        (get_local $5)
+        (i32.const 2)
+       )
+      )
      )
     )
    )
@@ -194,7 +292,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 8)
+     (i32.const 40)
      (i32.const 234)
      (i32.const 4)
     )
@@ -207,7 +305,7 @@
     (i32.const 0)
    )
    (set_local $1
-    (i32.const 40)
+    (i32.const 72)
    )
   )
   (set_local $3
@@ -319,31 +417,62 @@
       (get_local $0)
       (i32.const 0)
      )
-     (i32.const 4)
+     (i32.const 36)
      (i32.const 0)
     )
    )
   )
  )
  (func $~lib/array/Array<Array<String>>#__get (; 10 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (set_local $2
+   (i32.load
+    (get_local $0)
+   )
+  )
+  (set_local $3
+   (i32.shr_u
+    (i32.load
+     (get_local $2)
+    )
+    (i32.const 2)
+   )
+  )
   (if
    (i32.ge_u
     (get_local $1)
-    (i32.load offset=4
+    (get_local $3)
-     (get_local $0)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 64)
+     (i32.const 37)
     )
     (unreachable)
    )
-  (return
-   (i32.load
-    (i32.add
-     (i32.load
-      (get_local $0)
   )
-     (i32.mul
+  (return
+   (block $~lib/internal/arraybuffer/loadUnsafe<Array<String>>|inlined.0 (result i32)
+    (set_local $4
+     (get_local $2)
+    )
+    (set_local $5
      (get_local $1)
-      (i32.const 4)
+    )
+    (br $~lib/internal/arraybuffer/loadUnsafe<Array<String>>|inlined.0
+     (i32.load offset=8
+      (i32.add
+       (get_local $4)
+       (i32.shl
+        (get_local $5)
+        (i32.const 2)
+       )
+      )
      )
     )
    )
@@ -376,7 +505,7 @@
       )
       (i32.const 1)
      )
-     (i32.const 4)
+     (i32.const 36)
      (i32.const 0)
     )
    )

tests/compiler/std/array.ts

@@ -1,128 +1,61 @@
 import "allocator/arena";
+import { Array } from "array";
+import { defaultComparator } from "internal/array";
 
-// Default comparator
+// Obtains the internal capacity of an array from its backing buffer.
-function createDefaultComparator<T>(): (a: T, b: T) => i32 {
+function internalCapacity<T>(array: Array<T>): i32 {
-  return (a: T, b: T): i32 => (
+  // the memory region used by the backing buffer might still be larger in that the ArrayBuffer
-    <i32>(a > b) - <i32>(a < b)
+  // pre-allocates a power of 2 sized buffer itself and reuses it as long as it isn't exceeded.
-  );
+  var buffer: ArrayBuffer = array.buffer_;
+  return buffer.byteLength >> alignof<T>();
 }
 
-// Check is array sorted
+var arr = new Array<i32>();
-function isSorted<T>(data: Array<T>, comparator: (a: T, b: T) => i32 = createDefaultComparator<T>()): bool {
-  for (let i: i32 = 1, len: i32 = data.length; i < len; i++) {
-    if (comparator(data[i - 1], data[i]) > 0) {
-      return false;
-    }
-  }
-  return true;
-}
 
-// Check is equality for arrays
+// Array#push/pop //////////////////////////////////////////////////////////////////////////////////
-function isArraysEqual<T>(a: Array<T>, b: Array<T>, maxLen: i32 = 0): bool {
-  var len = maxLen;
-  if (!maxLen) {
-    if (a.length != b.length) {
-      return false;
-    }
-    len = <i32>a.length;
-  }
-  for (let i: i32 = 0; i < len; i++) {
-    if (a[i] != b[i]) return false;
-  }
-  return true;
-}
-
-function createReverseOrderedArray(size: i32): Array<i32> {
-  var arr = new Array<i32>(size);
-  for (let i: i32 = 0; i < arr.length; i++) {
-    arr[i] = <i32>arr.length - 1 - i;
-  }
-  return arr;
-}
-
-NativeMath.seedRandom(reinterpret<u64>(JSMath.random()));
-
-function createRandomOrderedArray(size: i32): Array<i32> {
-  var arr = new Array<i32>(size);
-  for (let i: i32 = 0; i < arr.length; i++) {
-    arr[i] = <i32>(NativeMath.random() * arr.length);
-  }
-  return arr;
-}
-
-/*
-function createReverseOrderedNestedArray(size: i32): Array<Array<i32>> {
-  var arr = new Array<Array<i32>>(size);
-  for (let i: i32 = 0; i < arr.length; i++) {
-    arr[i] = new Array<i32>(1);
-    arr[i][0] = arr.length - 1 - i;
-  }
-  return arr;
-}
-
-class Proxy<T> {
-  constructor(public x: T) {}
-}
-
-function createReverseOrderedElementsArray(size: i32): Proxy<i32>[] {
-  var arr = new Array<Proxy<i32>>(size);
-  for (let i: i32 = 0; i < arr.length; i++) {
-    arr[i] = new Proxy<i32>(arr.length - 1 - i);
-  }
-  return arr;
-}
-*/
-
-function assertSorted<T>(arr: Array<T>, comparator: (a: T, b: T) => i32): void {
-  assert(isSorted<T>(arr.sort<T>(comparator), comparator));
-}
-
-function assertSortedDefault<T>(arr: Array<T>): void {
-  assertSorted<T>(arr, createDefaultComparator<T>());
-}
-
-var arr = changetype<i32[]>(allocate_memory(sizeof<usize>() + 2 * sizeof<i32>()));
 
 assert(arr.length == 0);
-assert(arr.__capacity == 0);
+assert(internalCapacity<i32>(arr) == 0);
 
 arr.push(42);
 
 assert(arr[0] == 42);
 assert(arr.length == 1);
-assert(arr.__capacity == 1);
+assert(internalCapacity<i32>(arr) == 1);
 
 var i = arr.pop();
 
 assert(i == 42);
 assert(arr.length == 0);
-assert(arr.__capacity == 1);
+assert(internalCapacity<i32>(arr) == 1);
 
 arr.push(43);
 
 assert(arr.length == 1);
-assert(arr.__capacity == 1);
+assert(internalCapacity<i32>(arr) == 1);
 assert(arr[0] == 43);
 
 arr.push(44);
 
 assert(arr.length == 2);
-assert(arr.__capacity == 2);
+assert(internalCapacity<i32>(arr) == 2);
 assert(arr[0] == 43);
 assert(arr[1] == 44);
 
 arr.push(45);
 
 assert(arr.length == 3);
-assert(arr.__capacity == 4);
+assert(internalCapacity<i32>(arr) == 3);
 assert(arr[0] == 43);
 assert(arr[1] == 44);
 assert(arr[2] == 45);
 
+// Array#unshift ///////////////////////////////////////////////////////////////////////////////////
+
 arr.unshift(42);
 
 assert(arr.length == 4);
-assert(arr.__capacity == 4);
+assert(internalCapacity<i32>(arr) == 4);
 assert(arr[0] == 42);
 assert(arr[1] == 43);
 assert(arr[2] == 44);
@@ -131,18 +64,20 @@ assert(arr[3] == 45);
 arr.unshift(41);
 
 assert(arr.length == 5);
-assert(arr.__capacity == 8);
+assert(internalCapacity<i32>(arr) == 5);
 assert(arr[0] == 41);
 assert(arr[1] == 42);
 assert(arr[2] == 43);
 assert(arr[3] == 44);
 assert(arr[4] == 45);
 
+// Array#shift /////////////////////////////////////////////////////////////////////////////////////
+
 i = arr.shift();
 
 assert(i == 41);
 assert(arr.length == 4);
-assert(arr.__capacity == 8);
+assert(internalCapacity<i32>(arr) == 5);
 assert(arr[0] == 42);
 assert(arr[1] == 43);
 assert(arr[2] == 44);
@@ -152,15 +87,17 @@ i = arr.pop();
 
 assert(i == 45);
 assert(arr.length == 3);
-assert(arr.__capacity == 8);
+assert(internalCapacity<i32>(arr) == 5);
 assert(arr[0] == 42);
 assert(arr[1] == 43);
 assert(arr[2] == 44);
 
+// Array#reverse ///////////////////////////////////////////////////////////////////////////////////
+
 arr.reverse();
 
 assert(arr.length == 3);
-assert(arr.__capacity == 8);
+assert(internalCapacity<i32>(arr) == 5);
 assert(arr[0] == 44);
 assert(arr[1] == 43);
 assert(arr[2] == 42);
@@ -168,6 +105,8 @@ assert(arr[2] == 42);
 arr.push(43);
 arr.push(44);
 
+// Array#indexOf ///////////////////////////////////////////////////////////////////////////////////
+
 i = arr.indexOf(44);
 
 assert(i == 0);
@@ -208,6 +147,8 @@ i = arr.indexOf(43, 2);
 
 assert(i == 3);
 
+// Array#includes //////////////////////////////////////////////////////////////////////////////////
+
 var includes = arr.includes(44);
 
 assert(includes == true);
@@ -251,16 +192,17 @@ assert(includes == true);
 arr.splice(1, 1);
 
 assert(arr.length == 4);
-assert(arr.__capacity == 8);
+assert(internalCapacity<i32>(arr) == 5);
 assert(arr[0] == 44);
 assert(arr[1] == 42);
 
+// Array#findIndex /////////////////////////////////////////////////////////////////////////////////
 
 arr[0] = 0;
 arr[1] = 1;
 arr[2] = 2;
 arr[3] = 3;
-/*=============================== findIndex ==========================*/
+
 i = arr.findIndex((value: i32, index: i32, array: Array<i32>): bool => value == 0);
 assert(i == 0);
 
@@ -297,7 +239,9 @@ assert(arr.length == 2);
 
 arr.push(2);
 arr.push(3);
-/*=============================== every ==========================*/
+
+// Array#every /////////////////////////////////////////////////////////////////////////////////////
+
 var every = arr.every((value: i32, index: i32, array: Array<i32>): bool => value >= 0);
 assert(every == true);
 
@@ -331,7 +275,9 @@ assert(arr.length == 2);
 
 arr.push(2);
 arr.push(3);
-/*=============================== some ==========================*/
+
+// Array#some //////////////////////////////////////////////////////////////////////////////////////
+
 var some = arr.some((value: i32, index: i32, array: Array<i32>): bool => value >= 3);
 assert(some == true);
 
@@ -365,7 +311,8 @@ assert(arr.length == 2);
 
 arr.push(2);
 arr.push(3);
-/*=============================== reduce ==========================*/
+
+// Array#reduce ////////////////////////////////////////////////////////////////////////////////////
 
 i = arr.reduce<i32>(((prev: i32, current: i32, index: i32, array: Array<i32>): i32 => prev + current), 0);
 assert(i == 6);
@@ -405,46 +352,115 @@ i = arr.reduce<i32>(((prev: i32, current: i32, index: i32, array: Array<i32>): i
 assert(i == 1);
 assert(arr.length == 2);
 
-/*=============================== sort ==========================*/
+// Array#sort //////////////////////////////////////////////////////////////////////////////////////
 
-var revesed0: Array<i32> = [];
+// Checks if an array is properly sorted
-var revesed1: Array<i32> = [1];
+function isSorted<T>(data: Array<T>, comparator: (a: T, b: T) => i32 = defaultComparator<T>()): bool {
-var revesed2: Array<i32> = [2, 1];
+  for (let i: i32 = 1, len: i32 = data.length; i < len; i++) {
-var revesed4: Array<i32> = [3, 2, 1, 0];
+    if (comparator(data[i - 1], data[i]) > 0) return false;
+  }
+  return true;
+}
+
+// Checks if two arrays are equal
+function isArraysEqual<T>(a: Array<T>, b: Array<T>, len: i32 = 0): bool {
+  if (!len) {
+    if (a.length != b.length) return false;
+    len = a.length;
+  }
+  for (let i = 0; i < len; i++) {
+    if (a[i] != b[i]) return false;
+  }
+  return true;
+}
+
+function createReverseOrderedArray(size: i32): Array<i32> {
+  var arr = new Array<i32>(size);
+  for (let i = 0; i < arr.length; i++) {
+    arr[i] = arr.length - 1 - i;
+  }
+  return arr;
+}
+
+NativeMath.seedRandom(reinterpret<u64>(JSMath.random()));
+
+function createRandomOrderedArray(size: i32): Array<i32> {
+  var arr = new Array<i32>(size);
+  for (let i = 0; i < arr.length; i++) {
+    arr[i] = <i32>(NativeMath.random() * arr.length);
+  }
+  return arr;
+}
+
+/*
+function createReverseOrderedNestedArray(size: i32): Array<Array<i32>> {
+  var arr = new Array<Array<i32>>(size);
+  for (let i: i32 = 0; i < arr.length; i++) {
+    arr[i] = new Array<i32>(1);
+    arr[i][0] = arr.length - 1 - i;
+  }
+  return arr;
+}
+
+class Proxy<T> {
+  constructor(public x: T) {}
+}
+
+function createReverseOrderedElementsArray(size: i32): Proxy<i32>[] {
+  var arr = new Array<Proxy<i32>>(size);
+  for (let i: i32 = 0; i < arr.length; i++) {
+    arr[i] = new Proxy<i32>(arr.length - 1 - i);
+  }
+  return arr;
+}
+*/
+
+function assertSorted<T>(arr: Array<T>, comparator: (a: T, b: T) => i32): void {
+  assert(isSorted<T>(arr.sort(comparator), comparator));
+}
+
+function assertSortedDefault<T>(arr: Array<T>): void {
+  assertSorted<T>(arr, defaultComparator<T>());
+}
+
+var reversed0: Array<i32> = [];
+var reversed1: Array<i32> = [1];
+var reversed2: Array<i32> = [2, 1];
+var reversed4: Array<i32> = [3, 2, 1, 0];
 
 var expected4: Array<i32> = [0, 1, 2, 3];
 
-var revesed64    = createReverseOrderedArray(64);
+var reversed64    = createReverseOrderedArray(64);
-var revesed128   = createReverseOrderedArray(128);
+var reversed128   = createReverseOrderedArray(128);
-var revesed1024  = createReverseOrderedArray(1024);
+var reversed1024  = createReverseOrderedArray(1024);
-var revesed10000 = createReverseOrderedArray(10000);
+var reversed10000 = createReverseOrderedArray(10000);
 
 var randomized512 = createRandomOrderedArray(512);
 
 // Test sorting with with default comparator
 
-assertSortedDefault<i32>(revesed0);
+assertSortedDefault<i32>(reversed0);
 
-assertSortedDefault<i32>(revesed1);
+assertSortedDefault<i32>(reversed1);
-assert(isArraysEqual<i32>(revesed1, <i32[]>[1]));
+assert(isArraysEqual<i32>(reversed1, <i32[]>[1]));
 
-assertSortedDefault<i32>(revesed2);
+assertSortedDefault<i32>(reversed2);
-assert(isArraysEqual<i32>(revesed2, <i32[]>[1, 2]));
+assert(isArraysEqual<i32>(reversed2, <i32[]>[1, 2]));
 
-assertSortedDefault<i32>(revesed4);
+assertSortedDefault<i32>(reversed4);
-assert(isArraysEqual<i32>(revesed4, expected4));
+assert(isArraysEqual<i32>(reversed4, expected4));
 
-assertSortedDefault<i32>(revesed64);
+assertSortedDefault<i32>(reversed64);
-assert(isArraysEqual<i32>(revesed64, expected4, 4));
+assert(isArraysEqual<i32>(reversed64, expected4, 4));
 
-assertSortedDefault<i32>(revesed128);
+assertSortedDefault<i32>(reversed128);
-assert(isArraysEqual<i32>(revesed128, expected4, 4));
+assert(isArraysEqual<i32>(reversed128, expected4, 4));
 
-assertSortedDefault<i32>(revesed1024);
+assertSortedDefault<i32>(reversed1024);
-assert(isArraysEqual<i32>(revesed1024, expected4, 4));
+assert(isArraysEqual<i32>(reversed1024, expected4, 4));
 
-assertSortedDefault<i32>(revesed10000);
+assertSortedDefault<i32>(reversed10000);
-assert(isArraysEqual<i32>(revesed10000, expected4, 4));
+assert(isArraysEqual<i32>(reversed10000, expected4, 4));
 
 assertSortedDefault<i32>(randomized512);
 

tests/compiler/std/arraybuffer.optimized.wat

@@ -1,7 +1,7 @@
 (module
  (type $iii (func (param i32 i32) (result i32)))
- (type $ii (func (param i32) (result i32)))
  (type $iiiiv (func (param i32 i32 i32 i32)))
+ (type $ii (func (param i32) (result i32)))
  (type $iiiv (func (param i32 i32 i32)))
  (type $iiii (func (param i32 i32 i32) (result i32)))
  (type $v (func))
@@ -11,10 +11,11 @@
  (global $std/arraybuffer/buffer (mut i32) (i32.const 0))
  (global $argumentCount (mut i32) (i32.const 0))
  (global $std/arraybuffer/sliced (mut i32) (i32.const 0))
- (global $HEAP_BASE i32 (i32.const 104))
+ (global $HEAP_BASE i32 (i32.const 148))
  (memory $0 1)
- (data (i32.const 4) "\1c\00\00\00~\00l\00i\00b\00/\00i\00n\00t\00e\00r\00n\00a\00l\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s")
+ (data (i32.const 4) "\13\00\00\00~\00l\00i\00b\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s")
- (data (i32.const 64) "\12\00\00\00s\00t\00d\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s")
+ (data (i32.const 48) "\1c\00\00\00~\00l\00i\00b\00/\00i\00n\00t\00e\00r\00n\00a\00l\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s")
+ (data (i32.const 108) "\12\00\00\00s\00t\00d\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s")
  (export "memory" (memory $0))
  (start $start)
  (func $~lib/internal/arraybuffer/computeSize (; 1 ;) (type $ii) (param $0 i32) (result i32)
@@ -130,7 +131,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 4)
+     (i32.const 48)
      (i32.const 22)
      (i32.const 2)
     )
@@ -489,8 +490,16 @@
     (get_local $1)
     (i32.const 1073741816)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 13)
+     (i32.const 40)
+    )
     (unreachable)
    )
+  )
   (call $~lib/memory/set_memory
    (i32.add
     (tee_local $2
@@ -2537,7 +2546,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 5)
      (i32.const 0)
     )
@@ -2566,7 +2575,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 9)
      (i32.const 0)
     )
@@ -2581,7 +2590,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 10)
      (i32.const 0)
     )
@@ -2610,7 +2619,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 14)
      (i32.const 0)
     )
@@ -2639,7 +2648,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 18)
      (i32.const 0)
     )
@@ -2663,7 +2672,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 22)
      (i32.const 0)
     )
@@ -2687,7 +2696,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 26)
      (i32.const 0)
     )
@@ -2711,7 +2720,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 30)
      (i32.const 0)
     )
@@ -2735,7 +2744,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 34)
      (i32.const 0)
     )
@@ -2761,7 +2770,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 38)
      (i32.const 0)
     )
@@ -2775,7 +2784,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 39)
      (i32.const 0)
     )

tests/compiler/std/arraybuffer.untouched.wat

@@ -1,8 +1,8 @@
 (module
  (type $i (func (result i32)))
  (type $iii (func (param i32 i32) (result i32)))
- (type $ii (func (param i32) (result i32)))
  (type $iiiiv (func (param i32 i32 i32 i32)))
+ (type $ii (func (param i32) (result i32)))
  (type $iiiv (func (param i32 i32 i32)))
  (type $iiii (func (param i32 i32 i32) (result i32)))
  (type $v (func))
@@ -18,10 +18,11 @@
  (global $std/arraybuffer/buffer (mut i32) (i32.const 0))
  (global $argumentCount (mut i32) (i32.const 0))
  (global $std/arraybuffer/sliced (mut i32) (i32.const 0))
- (global $HEAP_BASE i32 (i32.const 104))
+ (global $HEAP_BASE i32 (i32.const 148))
  (memory $0 1)
- (data (i32.const 4) "\1c\00\00\00~\00l\00i\00b\00/\00i\00n\00t\00e\00r\00n\00a\00l\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s\00")
+ (data (i32.const 4) "\13\00\00\00~\00l\00i\00b\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s\00")
- (data (i32.const 64) "\12\00\00\00s\00t\00d\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s\00")
+ (data (i32.const 48) "\1c\00\00\00~\00l\00i\00b\00/\00i\00n\00t\00e\00r\00n\00a\00l\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s\00")
+ (data (i32.const 108) "\12\00\00\00s\00t\00d\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s\00")
  (export "memory" (memory $0))
  (start $start)
  (func $~lib/internal/arraybuffer/computeSize (; 1 ;) (type $ii) (param $0 i32) (result i32)
@@ -165,7 +166,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 4)
+     (i32.const 48)
      (i32.const 22)
      (i32.const 2)
     )
@@ -543,8 +544,16 @@
     (get_local $1)
     (i32.const 1073741816)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 13)
+     (i32.const 40)
+    )
     (unreachable)
    )
+  )
   (set_local $2
    (call $~lib/internal/arraybuffer/allocUnsafe
     (get_local $1)
@@ -2872,7 +2881,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 5)
      (i32.const 0)
     )
@@ -2903,7 +2912,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 9)
      (i32.const 0)
     )
@@ -2920,7 +2929,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 10)
      (i32.const 0)
     )
@@ -2951,7 +2960,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 14)
      (i32.const 0)
     )
@@ -2982,7 +2991,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 18)
      (i32.const 0)
     )
@@ -3008,7 +3017,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 22)
      (i32.const 0)
     )
@@ -3034,7 +3043,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 26)
      (i32.const 0)
     )
@@ -3060,7 +3069,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 30)
      (i32.const 0)
     )
@@ -3086,7 +3095,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 34)
      (i32.const 0)
     )
@@ -3117,7 +3126,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 38)
      (i32.const 0)
     )
@@ -3134,7 +3143,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 64)
+     (i32.const 108)
      (i32.const 39)
      (i32.const 0)
     )

tests/compiler/std/math.optimized.wat

@@ -12161,8 +12161,16 @@
    (i32.eqz
     (get_global $~lib/math/random_seeded)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 32)
+     (i32.const 1000)
+     (i32.const 24)
+    )
     (unreachable)
    )
+  )
   (set_local $0
    (get_global $~lib/math/random_state0)
   )

tests/compiler/std/math.untouched.wat

@@ -14381,8 +14381,16 @@
    (i32.eqz
     (get_global $~lib/math/random_seeded)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 32)
+     (i32.const 1000)
+     (i32.const 24)
+    )
     (unreachable)
    )
+  )
   (set_local $0
    (get_global $~lib/math/random_state0)
   )

tests/compiler/std/operator-overloading.ts

@@ -29,6 +29,11 @@ class Tester {
     return new Tester(a.x % b.x, a.y % b.y);
   }
 
+  @operator('**')
+  static pow(a: Tester, b: Tester): Tester {
+    return new Tester(<i32>(a.x ** b.x), <i32>(a.y ** b.y));
+  }
+
   @operator('|')
   static or(a: Tester, b: Tester): Tester {
     return new Tester(a.x | b.x, a.y | b.y);
@@ -99,12 +104,18 @@ var d2 = new Tester(3, 10);
 var d  = d1 / d2;
 assert(d.x == 2 && d.y == 5);
 
-// check fractional
+// check remainder
 var f1 = new Tester(10, 10);
 var f2 = new Tester(6, 10);
 var f  = f1 % f2;
 assert(f.x == 4 && f.y == 0);
 
+// check power
+var p1 = new Tester(2, 3);
+var p2 = new Tester(4, 5);
+var p  = p1 ** p2;
+assert(p.x == 16 && p.y == 243);
+
 // check bitwise and
 var n1 = new Tester(0xFF, 0x0F);
 var n2 = new Tester(0x0F, 0xFF);
@@ -166,3 +177,31 @@ var leq1 = new Tester(4, 3);
 var leq2 = new Tester(4, 3);
 var leq  = leq1 <= leq2;
 assert(leq == true);
+
+// check inlined static
+class TesterInlineStatic {
+  constructor(public x: i32, public y: i32) {
+  }
+  @inline @operator('+')
+  static add(a: TesterInlineStatic, b: TesterInlineStatic): TesterInlineStatic {
+    return new TesterInlineStatic(a.x + b.x, a.y + b.y);
+  }
+}
+var ais1 = new TesterInlineStatic(1, 2);
+var ais2 = new TesterInlineStatic(2, 3);
+var ais  = ais1 + ais2;
+assert(ais.x == 3 && ais.y == 5);
+
+// check inlined instance
+class TesterInlineInstance {
+  constructor(public x: i32, public y: i32) {
+  }
+  @inline @operator('+')
+  add(b: TesterInlineInstance): TesterInlineInstance {
+    return new TesterInlineInstance(this.x + b.x, this.y + b.y);
+  }
+}
+var aii1 = new TesterInlineInstance(1, 2);
+var aii2 = new TesterInlineInstance(2, 3);
+var aii  = aii1 + aii2;
+assert(aii.x == 3 && aii.y == 5);

tests/compiler/std/string.optimized.wat

@@ -3725,8 +3725,16 @@
     )
     (i32.const 1)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 72)
+     (i32.const 391)
+     (i32.const 6)
+    )
     (unreachable)
    )
+  )
   (if
    (i32.and
     (if (result i32)

tests/compiler/std/string.untouched.wat

@@ -4290,8 +4290,16 @@
     )
     (i32.const 1)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 72)
+     (i32.const 391)
+     (i32.const 6)
+    )
     (unreachable)
    )
+  )
   (if
    (i32.and
     (if (result i32)

tests/compiler/std/typedarray.optimized.wat

@@ -4,14 +4,17 @@
  (type $iii (func (param i32 i32) (result i32)))
  (type $ii (func (param i32) (result i32)))
  (type $iiiv (func (param i32 i32 i32)))
+ (type $iiii (func (param i32 i32 i32) (result i32)))
  (type $v (func))
  (import "env" "abort" (func $abort (param i32 i32 i32 i32)))
  (global $~lib/allocator/arena/startOffset (mut i32) (i32.const 0))
  (global $~lib/allocator/arena/offset (mut i32) (i32.const 0))
- (global $HEAP_BASE i32 (i32.const 104))
+ (global $std/typedarray/arr (mut i32) (i32.const 0))
+ (global $HEAP_BASE i32 (i32.const 164))
  (memory $0 1)
  (data (i32.const 4) "\11\00\00\00s\00t\00d\00/\00t\00y\00p\00e\00d\00a\00r\00r\00a\00y\00.\00t\00s")
- (data (i32.const 44) "\1c\00\00\00~\00l\00i\00b\00/\00i\00n\00t\00e\00r\00n\00a\00l\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s")
+ (data (i32.const 44) "\1b\00\00\00~\00l\00i\00b\00/\00i\00n\00t\00e\00r\00n\00a\00l\00/\00t\00y\00p\00e\00d\00a\00r\00r\00a\00y\00.\00t\00s")
+ (data (i32.const 104) "\1c\00\00\00~\00l\00i\00b\00/\00i\00n\00t\00e\00r\00n\00a\00l\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s")
  (export "memory" (memory $0))
  (start $start)
  (func $~lib/internal/arraybuffer/computeSize (; 1 ;) (type $ii) (param $0 i32) (result i32)
@@ -127,7 +130,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 44)
+     (i32.const 104)
      (i32.const 22)
      (i32.const 2)
     )
@@ -486,8 +489,16 @@
     (get_local $1)
     (i32.const 1073741816)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 44)
+     (i32.const 22)
+     (i32.const 34)
+    )
     (unreachable)
    )
+  )
   (call $~lib/memory/set_memory
    (i32.add
     (tee_local $2
@@ -537,9 +548,14 @@
   (get_local $0)
  )
  (func $~lib/internal/typedarray/TypedArray<i8>#get:length (; 6 ;) (type $ii) (param $0 i32) (result i32)
+  (i32.sub
    (i32.load offset=8
     (get_local $0)
    )
+   (i32.load offset=4
+    (get_local $0)
+   )
+  )
  )
  (func $~lib/internal/typedarray/TypedArray<i16>#constructor (; 7 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
   (local $2 i32)
@@ -548,8 +564,16 @@
     (get_local $1)
     (i32.const 536870908)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 44)
+     (i32.const 22)
+     (i32.const 34)
+    )
     (unreachable)
    )
+  )
   (call $~lib/memory/set_memory
    (i32.add
     (tee_local $2
@@ -605,9 +629,14 @@
  )
  (func $~lib/internal/typedarray/TypedArray<i16>#get:length (; 8 ;) (type $ii) (param $0 i32) (result i32)
   (i32.shr_s
+   (i32.sub
     (i32.load offset=8
      (get_local $0)
     )
+    (i32.load offset=4
+     (get_local $0)
+    )
+   )
    (i32.const 1)
   )
  )
@@ -618,8 +647,16 @@
     (get_local $1)
     (i32.const 268435454)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 44)
+     (i32.const 22)
+     (i32.const 34)
+    )
     (unreachable)
    )
+  )
   (call $~lib/memory/set_memory
    (i32.add
     (tee_local $2
@@ -675,9 +712,14 @@
  )
  (func $~lib/internal/typedarray/TypedArray<i32>#get:length (; 10 ;) (type $ii) (param $0 i32) (result i32)
   (i32.shr_s
+   (i32.sub
     (i32.load offset=8
      (get_local $0)
     )
+    (i32.load offset=4
+     (get_local $0)
+    )
+   )
    (i32.const 2)
   )
  )
@@ -688,8 +730,16 @@
     (get_local $1)
     (i32.const 134217727)
    )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 44)
+     (i32.const 22)
+     (i32.const 34)
+    )
     (unreachable)
    )
+  )
   (call $~lib/memory/set_memory
    (i32.add
     (tee_local $2
@@ -745,9 +795,14 @@
  )
  (func $~lib/internal/typedarray/TypedArray<i64>#get:length (; 12 ;) (type $ii) (param $0 i32) (result i32)
   (i32.shr_s
+   (i32.sub
     (i32.load offset=8
      (get_local $0)
     )
+    (i32.load offset=4
+     (get_local $0)
+    )
+   )
    (i32.const 3)
   )
  )
@@ -1308,7 +1363,217 @@
    )
   )
  )
- (func $start (; 14 ;) (type $v)
+ (func $~lib/internal/typedarray/TypedArray<i32>#__set (; 14 ;) (type $iiiv) (param $0 i32) (param $1 i32) (param $2 i32)
+  (local $3 i32)
+  (if
+   (i32.ge_u
+    (get_local $1)
+    (i32.shr_u
+     (i32.sub
+      (i32.load offset=8
+       (get_local $0)
+      )
+      (tee_local $3
+       (i32.load offset=4
+        (get_local $0)
+       )
+      )
+     )
+     (i32.const 2)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 44)
+     (i32.const 47)
+     (i32.const 42)
+    )
+    (unreachable)
+   )
+  )
+  (i32.store offset=8
+   (i32.add
+    (i32.add
+     (i32.load
+      (get_local $0)
+     )
+     (get_local $3)
+    )
+    (i32.shl
+     (get_local $1)
+     (i32.const 2)
+    )
+   )
+   (get_local $2)
+  )
+ )
+ (func $~lib/internal/typedarray/TypedArray<i32>#__get (; 15 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  (if
+   (i32.ge_u
+    (get_local $1)
+    (i32.shr_u
+     (i32.sub
+      (i32.load offset=8
+       (get_local $0)
+      )
+      (tee_local $2
+       (i32.load offset=4
+        (get_local $0)
+       )
+      )
+     )
+     (i32.const 2)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 44)
+     (i32.const 39)
+     (i32.const 42)
+    )
+    (unreachable)
+   )
+  )
+  (i32.load offset=8
+   (i32.add
+    (i32.add
+     (i32.load
+      (get_local $0)
+     )
+     (get_local $2)
+    )
+    (i32.shl
+     (get_local $1)
+     (i32.const 2)
+    )
+   )
+  )
+ )
+ (func $~lib/typedarray/Int32Array#subarray (; 16 ;) (type $iiii) (param $0 i32) (param $1 i32) (param $2 i32) (result i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (set_local $3
+   (get_local $2)
+  )
+  (set_local $4
+   (call $~lib/internal/typedarray/TypedArray<i32>#get:length
+    (tee_local $5
+     (get_local $0)
+    )
+   )
+  )
+  (set_local $1
+   (if (result i32)
+    (i32.lt_s
+     (get_local $1)
+     (i32.const 0)
+    )
+    (select
+     (tee_local $2
+      (i32.add
+       (get_local $4)
+       (get_local $1)
+      )
+     )
+     (tee_local $0
+      (i32.const 0)
+     )
+     (i32.gt_s
+      (get_local $2)
+      (get_local $0)
+     )
+    )
+    (select
+     (tee_local $2
+      (get_local $1)
+     )
+     (tee_local $0
+      (get_local $4)
+     )
+     (i32.lt_s
+      (get_local $2)
+      (get_local $0)
+     )
+    )
+   )
+  )
+  (set_local $3
+   (if (result i32)
+    (i32.lt_s
+     (get_local $3)
+     (i32.const 0)
+    )
+    (select
+     (tee_local $2
+      (i32.add
+       (get_local $4)
+       (get_local $3)
+      )
+     )
+     (tee_local $0
+      (get_local $1)
+     )
+     (i32.gt_s
+      (get_local $2)
+      (get_local $0)
+     )
+    )
+    (select
+     (tee_local $2
+      (select
+       (tee_local $2
+        (get_local $3)
+       )
+       (tee_local $0
+        (get_local $4)
+       )
+       (i32.lt_s
+        (get_local $2)
+        (get_local $0)
+       )
+      )
+     )
+     (tee_local $0
+      (get_local $1)
+     )
+     (i32.gt_s
+      (get_local $2)
+      (get_local $0)
+     )
+    )
+   )
+  )
+  (i32.store
+   (tee_local $2
+    (call $~lib/allocator/arena/allocate_memory
+     (i32.const 12)
+    )
+   )
+   (i32.load
+    (get_local $5)
+   )
+  )
+  (i32.store offset=4
+   (get_local $2)
+   (i32.shl
+    (get_local $1)
+    (i32.const 2)
+   )
+  )
+  (i32.store offset=8
+   (get_local $2)
+   (i32.shl
+    (get_local $3)
+    (i32.const 2)
+   )
+  )
+  (get_local $2)
+ )
+ (func $start (; 17 ;) (type $v)
   (set_global $~lib/allocator/arena/startOffset
    (i32.and
     (i32.add
@@ -1327,6 +1592,205 @@
   (call $std/typedarray/testInstantiate
    (i32.const 5)
   )
+  (set_global $std/typedarray/arr
+   (call $~lib/internal/typedarray/TypedArray<i32>#constructor
+    (i32.const 0)
+    (i32.const 3)
+   )
+  )
+  (call $~lib/internal/typedarray/TypedArray<i32>#__set
+   (get_global $std/typedarray/arr)
+   (i32.const 0)
+   (i32.const 1)
+  )
+  (call $~lib/internal/typedarray/TypedArray<i32>#__set
+   (get_global $std/typedarray/arr)
+   (i32.const 1)
+   (i32.const 2)
+  )
+  (call $~lib/internal/typedarray/TypedArray<i32>#__set
+   (get_global $std/typedarray/arr)
+   (i32.const 2)
+   (i32.const 3)
+  )
+  (if
+   (i32.ne
+    (call $~lib/internal/typedarray/TypedArray<i32>#get:length
+     (get_global $std/typedarray/arr)
+    )
+    (i32.const 3)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 74)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.load offset=4
+    (get_global $std/typedarray/arr)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 75)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.ne
+    (i32.load offset=8
+     (get_global $std/typedarray/arr)
+    )
+    (i32.const 12)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 76)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.ne
+    (call $~lib/internal/typedarray/TypedArray<i32>#__get
+     (get_global $std/typedarray/arr)
+     (i32.const 0)
+    )
+    (i32.const 1)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 77)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.ne
+    (call $~lib/internal/typedarray/TypedArray<i32>#__get
+     (get_global $std/typedarray/arr)
+     (i32.const 1)
+    )
+    (i32.const 2)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 78)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.ne
+    (call $~lib/internal/typedarray/TypedArray<i32>#__get
+     (get_global $std/typedarray/arr)
+     (i32.const 2)
+    )
+    (i32.const 3)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 79)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (set_global $std/typedarray/arr
+   (call $~lib/typedarray/Int32Array#subarray
+    (get_global $std/typedarray/arr)
+    (i32.const 1)
+    (i32.const 2)
+   )
+  )
+  (if
+   (i32.ne
+    (call $~lib/internal/typedarray/TypedArray<i32>#get:length
+     (get_global $std/typedarray/arr)
+    )
+    (i32.const 1)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 82)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.ne
+    (i32.load offset=4
+     (get_global $std/typedarray/arr)
+    )
+    (i32.const 4)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 83)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.ne
+    (i32.load offset=8
+     (get_global $std/typedarray/arr)
+    )
+    (i32.const 8)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 84)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.ne
+    (call $~lib/internal/typedarray/TypedArray<i32>#__get
+     (get_global $std/typedarray/arr)
+     (i32.const 0)
+    )
+    (i32.const 2)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 85)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
   (drop
    (call $~lib/internal/typedarray/TypedArray<i64>#constructor
     (i32.const 0)

tests/compiler/std/typedarray.ts

@@ -67,6 +67,23 @@ function testInstantiate(len: i32): void {
 testInstantiate(0);
 testInstantiate(5);
 
+var arr = new Int32Array(3);
+arr[0] = 1;
+arr[1] = 2;
+arr[2] = 3;
+assert(arr.length == 3);
+assert(arr.byteOffset == 0);
+assert(arr.byteLength == 3 * sizeof<i32>());
+assert(arr[0] == 1);
+assert(arr[1] == 2);
+assert(arr[2] == 3);
+
+arr = arr.subarray(1, 2);
+assert(arr.length == 1);
+assert(arr.byteOffset == 1 * sizeof<i32>());
+assert(arr.byteLength == 2 * sizeof<i32>());
+assert(arr[0] == 2);
+
 import { MAX_BLENGTH } from "internal/arraybuffer";
 
 const MAX_F64LENGTH = <u32>MAX_BLENGTH >> alignof<f64>();

tests/compiler/std/typedarray.untouched.wat

@@ -5,6 +5,7 @@
  (type $iii (func (param i32 i32) (result i32)))
  (type $ii (func (param i32) (result i32)))
  (type $iiiv (func (param i32 i32 i32)))
+ (type $iiii (func (param i32 i32 i32) (result i32)))
  (type $v (func))
  (import "env" "abort" (func $abort (param i32 i32 i32 i32)))
  (global $~lib/internal/allocator/AL_BITS i32 (i32.const 3))
@@ -15,11 +16,13 @@
  (global $~lib/allocator/arena/offset (mut i32) (i32.const 0))
  (global $~lib/internal/arraybuffer/HEADER_SIZE i32 (i32.const 8))
  (global $~lib/internal/arraybuffer/MAX_BLENGTH i32 (i32.const 1073741816))
+ (global $std/typedarray/arr (mut i32) (i32.const 0))
  (global $std/typedarray/MAX_F64LENGTH i32 (i32.const 134217727))
- (global $HEAP_BASE i32 (i32.const 104))
+ (global $HEAP_BASE i32 (i32.const 164))
  (memory $0 1)
  (data (i32.const 4) "\11\00\00\00s\00t\00d\00/\00t\00y\00p\00e\00d\00a\00r\00r\00a\00y\00.\00t\00s\00")
- (data (i32.const 44) "\1c\00\00\00~\00l\00i\00b\00/\00i\00n\00t\00e\00r\00n\00a\00l\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s\00")
+ (data (i32.const 44) "\1b\00\00\00~\00l\00i\00b\00/\00i\00n\00t\00e\00r\00n\00a\00l\00/\00t\00y\00p\00e\00d\00a\00r\00r\00a\00y\00.\00t\00s\00")
+ (data (i32.const 104) "\1c\00\00\00~\00l\00i\00b\00/\00i\00n\00t\00e\00r\00n\00a\00l\00/\00a\00r\00r\00a\00y\00b\00u\00f\00f\00e\00r\00.\00t\00s\00")
  (export "memory" (memory $0))
  (start $start)
  (func $~lib/internal/arraybuffer/computeSize (; 1 ;) (type $ii) (param $0 i32) (result i32)
@@ -163,7 +166,7 @@
    (block
     (call $abort
      (i32.const 0)
-     (i32.const 44)
+     (i32.const 104)
      (i32.const 22)
      (i32.const 2)
     )
@@ -545,8 +548,16 @@
      (get_local $1)
      (i32.const 1073741816)
     )
+    (block
+     (call $abort
+      (i32.const 0)
+      (i32.const 44)
+      (i32.const 22)
+      (i32.const 34)
+     )
      (unreachable)
     )
+   )
    (set_local $2
     (i32.shl
      (get_local $1)
@@ -611,9 +622,14 @@
  (func $~lib/internal/typedarray/TypedArray<i8>#get:length (; 6 ;) (type $ii) (param $0 i32) (result i32)
   (return
    (i32.shr_s
+    (i32.sub
      (i32.load offset=8
       (get_local $0)
      )
+     (i32.load offset=4
+      (get_local $0)
+     )
+    )
     (i32.const 0)
    )
   )
@@ -629,8 +645,16 @@
      (get_local $1)
      (i32.const 1073741816)
     )
+    (block
+     (call $abort
+      (i32.const 0)
+      (i32.const 44)
+      (i32.const 22)
+      (i32.const 34)
+     )
      (unreachable)
     )
+   )
    (set_local $2
     (i32.shl
      (get_local $1)
@@ -695,9 +719,14 @@
  (func $~lib/internal/typedarray/TypedArray<u8>#get:length (; 8 ;) (type $ii) (param $0 i32) (result i32)
   (return
    (i32.shr_s
+    (i32.sub
      (i32.load offset=8
       (get_local $0)
      )
+     (i32.load offset=4
+      (get_local $0)
+     )
+    )
     (i32.const 0)
    )
   )
@@ -713,8 +742,16 @@
      (get_local $1)
      (i32.const 536870908)
     )
+    (block
+     (call $abort
+      (i32.const 0)
+      (i32.const 44)
+      (i32.const 22)
+      (i32.const 34)
+     )
      (unreachable)
     )
+   )
    (set_local $2
     (i32.shl
      (get_local $1)
@@ -779,9 +816,14 @@
  (func $~lib/internal/typedarray/TypedArray<i16>#get:length (; 10 ;) (type $ii) (param $0 i32) (result i32)
   (return
    (i32.shr_s
+    (i32.sub
      (i32.load offset=8
       (get_local $0)
      )
+     (i32.load offset=4
+      (get_local $0)
+     )
+    )
     (i32.const 1)
    )
   )
@@ -797,8 +839,16 @@
      (get_local $1)
      (i32.const 536870908)
     )
+    (block
+     (call $abort
+      (i32.const 0)
+      (i32.const 44)
+      (i32.const 22)
+      (i32.const 34)
+     )
      (unreachable)
     )
+   )
    (set_local $2
     (i32.shl
      (get_local $1)
@@ -863,9 +913,14 @@
  (func $~lib/internal/typedarray/TypedArray<u16>#get:length (; 12 ;) (type $ii) (param $0 i32) (result i32)
   (return
    (i32.shr_s
+    (i32.sub
      (i32.load offset=8
       (get_local $0)
      )
+     (i32.load offset=4
+      (get_local $0)
+     )
+    )
     (i32.const 1)
    )
   )
@@ -881,8 +936,16 @@
      (get_local $1)
      (i32.const 268435454)
     )
+    (block
+     (call $abort
+      (i32.const 0)
+      (i32.const 44)
+      (i32.const 22)
+      (i32.const 34)
+     )
      (unreachable)
     )
+   )
    (set_local $2
     (i32.shl
      (get_local $1)
@@ -947,9 +1010,14 @@
  (func $~lib/internal/typedarray/TypedArray<i32>#get:length (; 14 ;) (type $ii) (param $0 i32) (result i32)
   (return
    (i32.shr_s
+    (i32.sub
      (i32.load offset=8
       (get_local $0)
      )
+     (i32.load offset=4
+      (get_local $0)
+     )
+    )
     (i32.const 2)
    )
   )
@@ -965,8 +1033,16 @@
      (get_local $1)
      (i32.const 268435454)
     )
+    (block
+     (call $abort
+      (i32.const 0)
+      (i32.const 44)
+      (i32.const 22)
+      (i32.const 34)
+     )
      (unreachable)
     )
+   )
    (set_local $2
     (i32.shl
      (get_local $1)
@@ -1031,9 +1107,14 @@
  (func $~lib/internal/typedarray/TypedArray<u32>#get:length (; 16 ;) (type $ii) (param $0 i32) (result i32)
   (return
    (i32.shr_s
+    (i32.sub
      (i32.load offset=8
       (get_local $0)
      )
+     (i32.load offset=4
+      (get_local $0)
+     )
+    )
     (i32.const 2)
    )
   )
@@ -1049,8 +1130,16 @@
      (get_local $1)
      (i32.const 134217727)
     )
+    (block
+     (call $abort
+      (i32.const 0)
+      (i32.const 44)
+      (i32.const 22)
+      (i32.const 34)
+     )
      (unreachable)
     )
+   )
    (set_local $2
     (i32.shl
      (get_local $1)
@@ -1115,9 +1204,14 @@
  (func $~lib/internal/typedarray/TypedArray<i64>#get:length (; 18 ;) (type $ii) (param $0 i32) (result i32)
   (return
    (i32.shr_s
+    (i32.sub
      (i32.load offset=8
       (get_local $0)
      )
+     (i32.load offset=4
+      (get_local $0)
+     )
+    )
     (i32.const 3)
    )
   )
@@ -1133,8 +1227,16 @@
      (get_local $1)
      (i32.const 134217727)
     )
+    (block
+     (call $abort
+      (i32.const 0)
+      (i32.const 44)
+      (i32.const 22)
+      (i32.const 34)
+     )
      (unreachable)
     )
+   )
    (set_local $2
     (i32.shl
      (get_local $1)
@@ -1199,9 +1301,14 @@
  (func $~lib/internal/typedarray/TypedArray<u64>#get:length (; 20 ;) (type $ii) (param $0 i32) (result i32)
   (return
    (i32.shr_s
+    (i32.sub
      (i32.load offset=8
       (get_local $0)
      )
+     (i32.load offset=4
+      (get_local $0)
+     )
+    )
     (i32.const 3)
    )
   )
@@ -1217,8 +1324,16 @@
      (get_local $1)
      (i32.const 268435454)
     )
+    (block
+     (call $abort
+      (i32.const 0)
+      (i32.const 44)
+      (i32.const 22)
+      (i32.const 34)
+     )
      (unreachable)
     )
+   )
    (set_local $2
     (i32.shl
      (get_local $1)
@@ -1283,9 +1398,14 @@
  (func $~lib/internal/typedarray/TypedArray<f32>#get:length (; 22 ;) (type $ii) (param $0 i32) (result i32)
   (return
    (i32.shr_s
+    (i32.sub
      (i32.load offset=8
       (get_local $0)
      )
+     (i32.load offset=4
+      (get_local $0)
+     )
+    )
     (i32.const 2)
    )
   )
@@ -1301,8 +1421,16 @@
      (get_local $1)
      (i32.const 134217727)
     )
+    (block
+     (call $abort
+      (i32.const 0)
+      (i32.const 44)
+      (i32.const 22)
+      (i32.const 34)
+     )
      (unreachable)
     )
+   )
    (set_local $2
     (i32.shl
      (get_local $1)
@@ -1367,9 +1495,14 @@
  (func $~lib/internal/typedarray/TypedArray<f64>#get:length (; 24 ;) (type $ii) (param $0 i32) (result i32)
   (return
    (i32.shr_s
+    (i32.sub
      (i32.load offset=8
       (get_local $0)
      )
+     (i32.load offset=4
+      (get_local $0)
+     )
+    )
     (i32.const 3)
    )
   )
@@ -2046,7 +2179,281 @@
    )
   )
  )
- (func $start (; 26 ;) (type $v)
+ (func $~lib/internal/typedarray/TypedArray<i32>#__set (; 26 ;) (type $iiiv) (param $0 i32) (param $1 i32) (param $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (local $6 i32)
+  (local $7 i32)
+  (local $8 i32)
+  (set_local $3
+   (i32.load offset=4
+    (get_local $0)
+   )
+  )
+  (set_local $4
+   (i32.shr_u
+    (i32.sub
+     (i32.load offset=8
+      (get_local $0)
+     )
+     (get_local $3)
+    )
+    (i32.const 2)
+   )
+  )
+  (if
+   (i32.ge_u
+    (get_local $1)
+    (get_local $4)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 44)
+     (i32.const 47)
+     (i32.const 42)
+    )
+    (unreachable)
+   )
+  )
+  (block $~lib/internal/arraybuffer/storeUnsafeWithOffset<i32>|inlined.0
+   (set_local $5
+    (i32.load
+     (get_local $0)
+    )
+   )
+   (set_local $6
+    (get_local $1)
+   )
+   (set_local $7
+    (get_local $2)
+   )
+   (set_local $8
+    (get_local $3)
+   )
+   (i32.store offset=8
+    (i32.add
+     (i32.add
+      (get_local $5)
+      (get_local $8)
+     )
+     (i32.shl
+      (get_local $6)
+      (i32.const 2)
+     )
+    )
+    (get_local $7)
+   )
+  )
+ )
+ (func $~lib/internal/typedarray/TypedArray<i32>#__get (; 27 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
+  (local $2 i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (local $6 i32)
+  (set_local $2
+   (i32.load offset=4
+    (get_local $0)
+   )
+  )
+  (set_local $3
+   (i32.shr_u
+    (i32.sub
+     (i32.load offset=8
+      (get_local $0)
+     )
+     (get_local $2)
+    )
+    (i32.const 2)
+   )
+  )
+  (if
+   (i32.ge_u
+    (get_local $1)
+    (get_local $3)
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 44)
+     (i32.const 39)
+     (i32.const 42)
+    )
+    (unreachable)
+   )
+  )
+  (return
+   (block $~lib/internal/arraybuffer/loadUnsafeWithOffset<i32>|inlined.0 (result i32)
+    (set_local $4
+     (i32.load
+      (get_local $0)
+     )
+    )
+    (set_local $5
+     (get_local $1)
+    )
+    (set_local $6
+     (get_local $2)
+    )
+    (br $~lib/internal/arraybuffer/loadUnsafeWithOffset<i32>|inlined.0
+     (i32.load offset=8
+      (i32.add
+       (i32.add
+        (get_local $4)
+        (get_local $6)
+       )
+       (i32.shl
+        (get_local $5)
+        (i32.const 2)
+       )
+      )
+     )
+    )
+   )
+  )
+ )
+ (func $~lib/typedarray/Int32Array#subarray (; 28 ;) (type $iiii) (param $0 i32) (param $1 i32) (param $2 i32) (result i32)
+  (local $3 i32)
+  (local $4 i32)
+  (local $5 i32)
+  (local $6 i32)
+  (local $7 i32)
+  (local $8 i32)
+  (return
+   (block $~lib/internal/typedarray/TypedArray<i32>#subarray|inlined.0 (result i32)
+    (set_local $3
+     (get_local $0)
+    )
+    (set_local $4
+     (get_local $1)
+    )
+    (set_local $5
+     (get_local $2)
+    )
+    (set_local $6
+     (call $~lib/internal/typedarray/TypedArray<i32>#get:length
+      (get_local $3)
+     )
+    )
+    (if
+     (i32.lt_s
+      (get_local $4)
+      (i32.const 0)
+     )
+     (set_local $4
+      (select
+       (tee_local $7
+        (i32.add
+         (get_local $6)
+         (get_local $4)
+        )
+       )
+       (tee_local $8
+        (i32.const 0)
+       )
+       (i32.gt_s
+        (get_local $7)
+        (get_local $8)
+       )
+      )
+     )
+     (set_local $4
+      (select
+       (tee_local $7
+        (get_local $4)
+       )
+       (tee_local $8
+        (get_local $6)
+       )
+       (i32.lt_s
+        (get_local $7)
+        (get_local $8)
+       )
+      )
+     )
+    )
+    (if
+     (i32.lt_s
+      (get_local $5)
+      (i32.const 0)
+     )
+     (set_local $5
+      (select
+       (tee_local $7
+        (i32.add
+         (get_local $6)
+         (get_local $5)
+        )
+       )
+       (tee_local $8
+        (get_local $4)
+       )
+       (i32.gt_s
+        (get_local $7)
+        (get_local $8)
+       )
+      )
+     )
+     (set_local $5
+      (select
+       (tee_local $7
+        (select
+         (tee_local $7
+          (get_local $5)
+         )
+         (tee_local $8
+          (get_local $6)
+         )
+         (i32.lt_s
+          (get_local $7)
+          (get_local $8)
+         )
+        )
+       )
+       (tee_local $8
+        (get_local $4)
+       )
+       (i32.gt_s
+        (get_local $7)
+        (get_local $8)
+       )
+      )
+     )
+    )
+    (set_local $7
+     (call $~lib/allocator/arena/allocate_memory
+      (i32.const 12)
+     )
+    )
+    (i32.store
+     (get_local $7)
+     (i32.load
+      (get_local $3)
+     )
+    )
+    (i32.store offset=4
+     (get_local $7)
+     (i32.shl
+      (get_local $4)
+      (i32.const 2)
+     )
+    )
+    (i32.store offset=8
+     (get_local $7)
+     (i32.shl
+      (get_local $5)
+      (i32.const 2)
+     )
+    )
+    (br $~lib/internal/typedarray/TypedArray<i32>#subarray|inlined.0
+     (get_local $7)
+    )
+   )
+  )
+ )
+ (func $start (; 29 ;) (type $v)
   (if
    (i32.eqz
     (i32.eq
@@ -2238,6 +2645,237 @@
   (call $std/typedarray/testInstantiate
    (i32.const 5)
   )
+  (set_global $std/typedarray/arr
+   (call $~lib/internal/typedarray/TypedArray<i32>#constructor
+    (i32.const 0)
+    (i32.const 3)
+   )
+  )
+  (call $~lib/internal/typedarray/TypedArray<i32>#__set
+   (get_global $std/typedarray/arr)
+   (i32.const 0)
+   (i32.const 1)
+  )
+  (call $~lib/internal/typedarray/TypedArray<i32>#__set
+   (get_global $std/typedarray/arr)
+   (i32.const 1)
+   (i32.const 2)
+  )
+  (call $~lib/internal/typedarray/TypedArray<i32>#__set
+   (get_global $std/typedarray/arr)
+   (i32.const 2)
+   (i32.const 3)
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (call $~lib/internal/typedarray/TypedArray<i32>#get:length
+      (get_global $std/typedarray/arr)
+     )
+     (i32.const 3)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 74)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (i32.load offset=4
+      (get_global $std/typedarray/arr)
+     )
+     (i32.const 0)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 75)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (i32.load offset=8
+      (get_global $std/typedarray/arr)
+     )
+     (i32.mul
+      (i32.const 3)
+      (i32.const 4)
+     )
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 76)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (call $~lib/internal/typedarray/TypedArray<i32>#__get
+      (get_global $std/typedarray/arr)
+      (i32.const 0)
+     )
+     (i32.const 1)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 77)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (call $~lib/internal/typedarray/TypedArray<i32>#__get
+      (get_global $std/typedarray/arr)
+      (i32.const 1)
+     )
+     (i32.const 2)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 78)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (call $~lib/internal/typedarray/TypedArray<i32>#__get
+      (get_global $std/typedarray/arr)
+      (i32.const 2)
+     )
+     (i32.const 3)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 79)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (set_global $std/typedarray/arr
+   (call $~lib/typedarray/Int32Array#subarray
+    (get_global $std/typedarray/arr)
+    (i32.const 1)
+    (i32.const 2)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (call $~lib/internal/typedarray/TypedArray<i32>#get:length
+      (get_global $std/typedarray/arr)
+     )
+     (i32.const 1)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 82)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (i32.load offset=4
+      (get_global $std/typedarray/arr)
+     )
+     (i32.mul
+      (i32.const 1)
+      (i32.const 4)
+     )
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 83)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (i32.load offset=8
+      (get_global $std/typedarray/arr)
+     )
+     (i32.mul
+      (i32.const 2)
+      (i32.const 4)
+     )
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 84)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
+  (if
+   (i32.eqz
+    (i32.eq
+     (call $~lib/internal/typedarray/TypedArray<i32>#__get
+      (get_global $std/typedarray/arr)
+      (i32.const 0)
+     )
+     (i32.const 2)
+    )
+   )
+   (block
+    (call $abort
+     (i32.const 0)
+     (i32.const 4)
+     (i32.const 85)
+     (i32.const 0)
+    )
+    (unreachable)
+   )
+  )
   (drop
    (call $~lib/internal/typedarray/TypedArray<f64>#constructor
     (i32.const 0)