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More smarter temp locals

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This commit is contained in:
dcodeIO
2017-12-12 09:38:20 +01:00
parent f75b962c74
commit c8680b1e77
5 changed files with 631 additions and 709 deletions
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15
src/compiler.ts
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@ -858,12 +858,12 @@ export class Compiler extends DiagnosticEmitter {
this.disallowContinue = true;
// introduce a local for evaluating the condition (exactly once)
const local: Local = this.currentFunction.addLocal(Type.i32);
const tempLocal: Local = this.currentFunction.getTempLocal(Type.i32);
let i: i32, k: i32 = statement.cases.length;
// prepend initializer to inner block
const breaks: ExpressionRef[] = new Array(1 + k);
breaks[0] = this.module.createSetLocal(local.index, this.compileExpression(statement.expression, Type.i32)); // initializer
breaks[0] = this.module.createSetLocal(tempLocal.index, this.compileExpression(statement.expression, Type.i32)); // initializer
// make one br_if per (possibly dynamic) labeled case (binaryen optimizes to br_table where possible)
let breakIndex: i32 = 1;
@ -873,7 +873,7 @@ export class Compiler extends DiagnosticEmitter {
if (case_.label) {
breaks[breakIndex++] = this.module.createBreak("case" + i.toString(10) + "|" + context,
this.module.createBinary(BinaryOp.EqI32,
this.module.createGetLocal(local.index, NativeType.I32),
this.module.createGetLocal(tempLocal.index, NativeType.I32),
this.compileExpression(case_.label, Type.i32)
)
);
@ -881,6 +881,8 @@ export class Compiler extends DiagnosticEmitter {
defaultIndex = i;
}
this.currentFunction.freeTempLocal(tempLocal);
// otherwise br to default respectively out of the switch if there is no default case
breaks[breakIndex] = this.module.createBreak((defaultIndex >= 0
? "case" + defaultIndex.toString(10)
@ -1495,7 +1497,7 @@ export class Compiler extends DiagnosticEmitter {
// );
// otherwise use a temporary local for the intermediate value
tempLocal = this.currentFunction.addLocal(this.currentType);
tempLocal = this.currentFunction.getAndFreeTempLocal(this.currentType);
condition = this.module.createTeeLocal(tempLocal.index, left);
return this.module.createIf(
this.currentType.isLongInteger
@ -1528,7 +1530,7 @@ export class Compiler extends DiagnosticEmitter {
// );
// otherwise use a temporary local for the intermediate value
tempLocal = this.currentFunction.addLocal(this.currentType);
tempLocal = this.currentFunction.getAndFreeTempLocal(this.currentType);
condition = this.module.createTeeLocal(tempLocal.index, left);
return this.module.createIf(
this.currentType.isLongInteger
@ -1848,7 +1850,7 @@ export class Compiler extends DiagnosticEmitter {
const getValue: ExpressionRef = this.compileExpression(expression.expression, contextualType, contextualType == Type.void ? ConversionKind.NONE : ConversionKind.IMPLICIT);
// use a temp local for the intermediate value
const tempLocal: Local = this.currentFunction.addLocal(this.currentType);
const tempLocal: Local = this.currentFunction.getTempLocal(this.currentType);
let op: BinaryOp;
let nativeType: NativeType;
@ -1886,6 +1888,7 @@ export class Compiler extends DiagnosticEmitter {
// NOTE: can't preemptively tee_local the return value on the stack because binaryen expects
// this to be well-formed. becomes a tee_local when optimizing, though.
this.currentType = tempLocal.type;
this.currentFunction.freeTempLocal(tempLocal);
return this.module.createBlock(null, [
this.module.createSetLocal(tempLocal.index, getValue), // +++ this.module.createTeeLocal(tempLocal.index, getValue),
setValue,