forked from OSchip/llvm-project
36 lines
766 B
LLVM
36 lines
766 B
LLVM
; RUN: llc < %s -mcpu=corei7 -march=x86-64 -mattr=+sse2 | FileCheck %s
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; Verify that floating-point operations inside 'optnone' functions
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; are not optimized even if unsafe-fp-math is set.
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define float @foo(float %x) #0 {
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entry:
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%add = fadd fast float %x, %x
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%add1 = fadd fast float %add, %x
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ret float %add1
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}
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; CHECK-LABEL: @foo
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; CHECK-NOT: add
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; CHECK: mul
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; CHECK-NOT: add
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; CHECK: ret
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define float @fooWithOptnone(float %x) #1 {
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entry:
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%add = fadd fast float %x, %x
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%add1 = fadd fast float %add, %x
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ret float %add1
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}
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; CHECK-LABEL: @fooWithOptnone
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; CHECK-NOT: mul
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; CHECK: add
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; CHECK-NOT: mul
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; CHECK: add
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; CHECK-NOT: mul
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; CHECK: ret
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attributes #0 = { "unsafe-fp-math"="true" }
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attributes #1 = { noinline optnone "unsafe-fp-math"="true" }
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