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Support FNeg in SpeculativeExecution pass

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Differential Revision: https://reviews.llvm.org/D61910

llvm-svn: 360692
This commit is contained in:
Cameron McInally 2019-05-14 16:51:18 +00:00
parent 8903a4ed3b
commit 4072ff2ca7
2 changed files with 17 additions and 2 deletions
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1
lib/Transforms/Scalar/SpeculativeExecution.cpp
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@ -240,6 +240,7 @@ static unsigned ComputeSpeculationCost(const Instruction *I,
case Instruction::FMul: case Instruction::FMul:
case Instruction::FDiv: case Instruction::FDiv:
case Instruction::FRem: case Instruction::FRem:
case Instruction::FNeg:
case Instruction::ICmp: case Instruction::ICmp:
case Instruction::FCmp: case Instruction::FCmp:
return TTI.getUserCost(I); return TTI.getUserCost(I);

18
test/Transforms/SpeculativeExecution/spec-fp.ll
View File

@ -30,10 +30,10 @@ b:
ret void ret void
} }
; CHECK-LABEL: @ifThen_fneg( ; CHECK-LABEL: @ifThen_binary_fneg(
; CHECK: fsub float -0.0 ; CHECK: fsub float -0.0
; CHECK: br i1 true ; CHECK: br i1 true
define void @ifThen_fneg() { define void @ifThen_binary_fneg() {
br i1 true, label %a, label %b br i1 true, label %a, label %b
a: a:
@ -44,6 +44,20 @@ b:
ret void ret void
} }
; CHECK-LABEL: @ifThen_unary_fneg(
; CHECK: fneg float
; CHECK: br i1 true
define void @ifThen_unary_fneg() {
br i1 true, label %a, label %b
a:
%x = fneg float undef
br label %b
b:
ret void
}
; CHECK-LABEL: @ifThen_fmul( ; CHECK-LABEL: @ifThen_fmul(
; CHECK: fmul ; CHECK: fmul
; CHECK: br i1 true ; CHECK: br i1 true