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Statically eliminate unnecessary branches in generic contexts

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In order to use the new compile time type checks in generics, untaken branches must be skipped because these might be invalid.
This commit is contained in:
dcodeIO
2018-03-17 14:40:58 +01:00
parent 2ed9fac171
commit 83e96892f2
18 changed files with 818 additions and 1769 deletions
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21
src/program.ts
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@ -2036,25 +2036,27 @@ export enum CommonFlags {
AMBIENT = 1 << 16,
/** Is generic. */
GENERIC = 1 << 17,
/** Is part of a generic context. */
GENERIC_CONTEXT = 1 << 18,
/** Is an instance member. */
INSTANCE = 1 << 18,
INSTANCE = 1 << 19,
/** Is a constructor. */
CONSTRUCTOR = 1 << 19,
CONSTRUCTOR = 1 << 20,
/** Is an arrow function. */
ARROW = 1 << 20,
ARROW = 1 << 21,
/** Is a module export. */
MODULE_EXPORT = 1 << 21,
MODULE_EXPORT = 1 << 22,
/** Is a module import. */
MODULE_IMPORT = 1 << 22,
MODULE_IMPORT = 1 << 23,
// Compilation states
/** Is compiled. */
COMPILED = 1 << 23,
COMPILED = 1 << 24,
/** Has a constant value and is therefore inlined. */
INLINED = 1 << 24,
INLINED = 1 << 25,
/** Is scoped. */
SCOPED = 1 << 25
SCOPED = 1 << 26
}
/** Base class of all program elements. */
@ -2084,7 +2086,8 @@ export abstract class Element {
/** Tests if this element has a specific flag or flags. */
is(flag: CommonFlags): bool { return (this.flags & flag) == flag; }
/** Tests if this element has any of the specified flags. */
isAny(flags: CommonFlags): bool { return (this.flags & flags) != 0; }
/** Sets a specific flag or flags. */
set(flag: CommonFlags): void { this.flags |= flag; }
}