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Fix increment/decrement not wrapping small ints in simplified case, see #26

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This commit is contained in:
dcodeIO
2018-02-15 09:22:46 +01:00
parent d31e484b15
commit f729444320
6 changed files with 2197 additions and 516 deletions
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42
src/compiler.ts
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@ -3343,32 +3343,42 @@ export class Compiler extends DiagnosticEmitter {
throw new Error("unary postfix operator expected");
}
var setValue: ExpressionRef;
var tempLocal: Local | null = null;
// simplify if dropped anyway
if (contextualType == Type.void)
return this.compileAssignmentWithValue(expression.operand,
this.module.createBinary(op,
getValue,
nativeOne
), false
if (contextualType == Type.void) {
setValue = this.module.createBinary(op,
getValue,
nativeOne
);
// use a temp local for the intermediate value and prepare a setter
var tempLocal = this.currentFunction.getTempLocal(this.currentType);
var setValue = this.module.createBinary(op,
this.module.createGetLocal(tempLocal.index, nativeType),
nativeOne
);
// otherwise use a temp local for the intermediate value
} else {
tempLocal = this.currentFunction.getTempLocal(this.currentType);
setValue = this.module.createBinary(op,
this.module.createGetLocal(tempLocal.index, nativeType),
nativeOne
);
}
if (possiblyOverflows) {
assert(this.currentType.is(TypeFlags.SMALL | TypeFlags.INTEGER));
setValue = makeSmallIntegerWrap(setValue, this.currentType, this.module);
}
setValue = this.compileAssignmentWithValue(expression.operand, setValue, false); // sets currentType = void
this.currentType = tempLocal.type;
this.currentFunction.freeTempLocal(tempLocal);
if (contextualType == Type.void) {
assert(!tempLocal);
return setValue;
}
this.currentType = assert(tempLocal).type;
this.currentFunction.freeTempLocal(<Local>tempLocal);
return this.module.createBlock(null, [
this.module.createSetLocal(tempLocal.index, getValue),
this.module.createSetLocal((<Local>tempLocal).index, getValue),
setValue,
this.module.createGetLocal(tempLocal.index, nativeType)
this.module.createGetLocal((<Local>tempLocal).index, nativeType)
], nativeType);
}