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Add support for constant folding the pow intrinsic.
rdar://10514247 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145730 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1053,6 +1053,7 @@ bool
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llvm::canConstantFoldCallTo(const Function *F) {
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switch (F->getIntrinsicID()) {
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case Intrinsic::sqrt:
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case Intrinsic::pow:
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case Intrinsic::powi:
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case Intrinsic::bswap:
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case Intrinsic::ctpop:
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@ -1346,9 +1347,6 @@ llvm::ConstantFoldCall(Function *F, ArrayRef<Constant *> Operands,
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(double)Op1->getValueAPF().convertToFloat() :
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Op1->getValueAPF().convertToDouble();
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if (ConstantFP *Op2 = dyn_cast<ConstantFP>(Operands[1])) {
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if (!TLI)
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return 0;
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if (Op2->getType() != Op1->getType())
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return 0;
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@ -1356,6 +1354,11 @@ llvm::ConstantFoldCall(Function *F, ArrayRef<Constant *> Operands,
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(double)Op2->getValueAPF().convertToFloat():
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Op2->getValueAPF().convertToDouble();
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if (F->getIntrinsicID() == Intrinsic::pow) {
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return ConstantFoldBinaryFP(pow, Op1V, Op2V, Ty);
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}
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if (!TLI)
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return 0;
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if (Name == "pow" && TLI->has(LibFunc::pow))
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return ConstantFoldBinaryFP(pow, Op1V, Op2V, Ty);
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if (Name == "fmod" && TLI->has(LibFunc::fmod))
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@ -61,6 +61,15 @@ declare i32 @llvm.x86.sse2.cvttsd2si(<2 x double>) nounwind readnone
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declare i64 @llvm.x86.sse2.cvtsd2si64(<2 x double>) nounwind readnone
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declare i64 @llvm.x86.sse2.cvttsd2si64(<2 x double>) nounwind readnone
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define double @test_intrinsic_pow() nounwind uwtable ssp {
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entry:
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; CHECK: @test_intrinsic_pow
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; CHECK-NOT: call
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%0 = call double @llvm.pow.f64(double 1.500000e+00, double 3.000000e+00)
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ret double %0
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}
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declare double @llvm.pow.f64(double, double) nounwind readonly
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; Shouldn't fold because of -fno-builtin
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define double @sin_() nounwind uwtable ssp {
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; FNOBUILTIN: @sin_
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