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Revert r222040 because of bot failure. 

http://lab.llvm.org:8080/green/job/clang-Rlto_master/298/
Hopefully, bot will be green.

llvm-svn: 222203
This commit is contained in:
Manman Ren 2014-11-18 00:33:22 +00:00
parent b072c3673a
commit a64bd44fd8
2 changed files with 6 additions and 19 deletions
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15
llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
View File

@ -1269,17 +1269,14 @@ Instruction *InstCombiner::visitFPTrunc(FPTruncInst &CI) {
// type of OpI doesn't enter into things at all. We simply evaluate
// in whichever source type is larger, then convert to the
// destination type.
Value *NewLHS = LHSOrig, *NewRHS = RHSOrig;
if (LHSWidth < SrcWidth)
NewLHS = Builder->CreateFPExt(NewLHS, RHSOrig->getType());
LHSOrig = Builder->CreateFPExt(LHSOrig, RHSOrig->getType());
else if (RHSWidth <= SrcWidth)
NewRHS = Builder->CreateFPExt(NewRHS, LHSOrig->getType());
if (NewLHS != LHSOrig || NewRHS != RHSOrig) {
Value *ExactResult = Builder->CreateFRem(NewLHS, NewRHS);
if (Instruction *RI = dyn_cast<Instruction>(ExactResult))
RI->copyFastMathFlags(OpI);
return CastInst::CreateFPCast(ExactResult, CI.getType());
}
RHSOrig = Builder->CreateFPExt(RHSOrig, LHSOrig->getType());
Value *ExactResult = Builder->CreateFRem(LHSOrig, RHSOrig);
if (Instruction *RI = dyn_cast<Instruction>(ExactResult))
RI->copyFastMathFlags(OpI);
return CastInst::CreateFPCast(ExactResult, CI.getType());
}
// (fptrunc (fneg x)) -> (fneg (fptrunc x))

10
llvm/test/Transforms/InstCombine/fpcast.ll
View File

@ -53,13 +53,3 @@ define half @test5(float %a, float %b, float %c) {
}
declare float @llvm.fabs.f32(float) nounwind readonly
define <1 x float> @test6(<1 x double> %V) {
%frem = frem <1 x double> %V, %V
%trunc = fptrunc <1 x double> %frem to <1 x float>
ret <1 x float> %trunc
; CHECK-LABEL: @test6
; CHECK-NEXT: %[[frem:.*]] = frem <1 x double> %V, %V
; CHECK-NEXT: %[[trunc:.*]] = fptrunc <1 x double> %[[frem]] to <1 x float>
; CHECK-NEXT: ret <1 x float> %trunc
}