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56b0cb8635
EarlyCSE had inconsistent behavior with regards to flag'd instructions: - In some cases, it would pessimize if the available instruction had different flags by not performing CSE. - In other cases, it would miscompile if it replaced an instruction which had no flags with an instruction which has flags. Fix this by being more consistent with our flag handling by utilizing andIRFlags. llvm-svn: 267111
19 lines
441 B
LLVM
19 lines
441 B
LLVM
; RUN: opt -early-cse -S < %s | FileCheck %s
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declare void @use(i1)
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define void @test1(float %x, float %y) {
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entry:
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%cmp1 = fcmp nnan oeq float %y, %x
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%cmp2 = fcmp oeq float %x, %y
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call void @use(i1 %cmp1)
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call void @use(i1 %cmp2)
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ret void
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}
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; CHECK-LABEL: define void @test1(
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; CHECK: %[[cmp:.*]] = fcmp oeq float %y, %x
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; CHECK-NEXT: call void @use(i1 %[[cmp]])
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; CHECK-NEXT: call void @use(i1 %[[cmp]])
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; CHECK-NEXT: ret void
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