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e6e5b11a65
Some platforms may treat denormals as zero, on other platforms multiplication with a subnormal is slower than dividing by a normal. llvm-svn: 128555
26 lines
593 B
LLVM
26 lines
593 B
LLVM
; RUN: opt -S -instcombine < %s | FileCheck %s
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define float @test1(float %x) nounwind readnone ssp {
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%div = fdiv float %x, 0x3810000000000000
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ret float %div
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; CHECK: @test1
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; CHECK-NEXT: fmul float %x, 0x47D0000000000000
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}
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define float @test2(float %x) nounwind readnone ssp {
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%div = fdiv float %x, 0x47E0000000000000
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ret float %div
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; CHECK: @test2
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; CHECK-NEXT: fdiv float %x, 0x47E0000000000000
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}
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define float @test3(float %x) nounwind readnone ssp {
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%div = fdiv float %x, 0x36A0000000000000
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ret float %div
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; CHECK: @test3
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; CHECK-NEXT: fdiv float %x, 0x36A0000000000000
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}
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