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Bug 936740: inline call to libc's ceil for Math.ceil(); r=jandem

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This commit is contained in:
Benjamin Bouvier 2013-12-19 15:32:59 +01:00
parent ee3ad9642d
commit b8918e11e2
5 changed files with 41 additions and 1 deletions
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4
js/src/jit/CodeGenerator.cpp
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@ -4099,6 +4099,9 @@ CodeGenerator::visitMathFunctionD(LMathFunctionD *ins)
case MMathFunction::Floor:
funptr = JS_FUNC_TO_DATA_PTR(void *, js::math_floor_impl);
break;
case MMathFunction::Ceil:
funptr = JS_FUNC_TO_DATA_PTR(void *, js::math_ceil_impl);
break;
case MMathFunction::Round:
funptr = JS_FUNC_TO_DATA_PTR(void *, js::math_round_impl);
break;
@ -4133,6 +4136,7 @@ CodeGenerator::visitMathFunctionF(LMathFunctionF *ins)
case MMathFunction::ASin: funptr = JS_FUNC_TO_DATA_PTR(void *, asinf); break;
case MMathFunction::ACos: funptr = JS_FUNC_TO_DATA_PTR(void *, acosf); break;
case MMathFunction::Floor: funptr = JS_FUNC_TO_DATA_PTR(void *, floorf); break;
case MMathFunction::Ceil: funptr = JS_FUNC_TO_DATA_PTR(void *, ceilf); break;
default:
MOZ_ASSUME_UNREACHABLE("Unknown or unsupported float32 math function");
}

1
js/src/jit/IonBuilder.h
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@ -611,6 +611,7 @@ class IonBuilder : public MIRGenerator
// Math natives.
InliningStatus inlineMathAbs(CallInfo &callInfo);
InliningStatus inlineMathFloor(CallInfo &callInfo);
InliningStatus inlineMathCeil(CallInfo &callInfo);
InliningStatus inlineMathRound(CallInfo &callInfo);
InliningStatus inlineMathSqrt(CallInfo &callInfo);
InliningStatus inlineMathAtan2(CallInfo &callInfo);

32
js/src/jit/MCallOptimize.cpp
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@ -43,6 +43,8 @@ IonBuilder::inlineNativeCall(CallInfo &callInfo, JSNative native)
return inlineMathAbs(callInfo);
if (native == js::math_floor)
return inlineMathFloor(callInfo);
if (native == js::math_ceil)
return inlineMathCeil(callInfo);
if (native == js::math_round)
return inlineMathRound(callInfo);
if (native == js_math_sqrt)
@ -588,6 +590,36 @@ IonBuilder::inlineMathFloor(CallInfo &callInfo)
return InliningStatus_NotInlined;
}
IonBuilder::InliningStatus
IonBuilder::inlineMathCeil(CallInfo &callInfo)
{
if (callInfo.constructing())
return InliningStatus_NotInlined;
if (callInfo.argc() != 1)
return InliningStatus_NotInlined;
MIRType argType = callInfo.getArg(0)->type();
MIRType returnType = getInlineReturnType();
// Math.ceil(int(x)) == int(x)
if (argType == MIRType_Int32 && returnType == MIRType_Int32) {
callInfo.unwrapArgs();
current->push(callInfo.getArg(0));
return InliningStatus_Inlined;
}
if (IsFloatingPointType(argType) && returnType == MIRType_Double) {
callInfo.unwrapArgs();
MMathFunction *ins = MMathFunction::New(alloc(), callInfo.getArg(0), MMathFunction::Ceil, nullptr);
current->add(ins);
current->push(ins);
return InliningStatus_Inlined;
}
return InliningStatus_NotInlined;
}
IonBuilder::InliningStatus
IonBuilder::inlineMathRound(CallInfo &callInfo)
{

1
js/src/jit/MIR.cpp
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@ -604,6 +604,7 @@ MMathFunction::FunctionName(Function function)
case Trunc: return "Trunc";
case Cbrt: return "Cbrt";
case Floor: return "Floor";
case Ceil: return "Ceil";
case Round: return "Round";
default:
MOZ_ASSUME_UNREACHABLE("Unknown math function");

4
js/src/jit/MIR.h
View File

@ -3875,6 +3875,7 @@ class MMathFunction
Trunc,
Cbrt,
Floor,
Ceil,
Round
};
@ -3931,7 +3932,8 @@ class MMathFunction
bool isFloat32Commutative() const {
return function_ == Log || function_ == Sin || function_ == Cos
|| function_ == Exp || function_ == Tan || function_ == ATan
|| function_ == ASin || function_ == ACos || function_ == Floor;
|| function_ == ASin || function_ == ACos || function_ == Floor
|| function_ == Ceil;
}
void trySpecializeFloat32(TempAllocator &alloc);
void computeRange(TempAllocator &alloc);