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31fda7550e
This work is to avoid regressions when we seperate FNeg from the FSub IR instruction. Differential Revision: https://reviews.llvm.org/D53205 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@345146 91177308-0d34-0410-b5e6-96231b3b80d8
40 lines
1.1 KiB
LLVM
40 lines
1.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -reassociate < %s | FileCheck %s
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define void @test1() {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[T1:%.*]] = tail call <4 x float> @blam()
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; CHECK-NEXT: [[T23:%.*]] = fsub fast <4 x float> undef, [[T1]]
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; CHECK-NEXT: [[T24:%.*]] = fadd fast <4 x float> [[T23]], undef
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; CHECK-NEXT: tail call void @wombat(<4 x float> [[T24]])
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; CHECK-NEXT: ret void
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;
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%t1 = tail call <4 x float> @blam()
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%t23 = fsub fast <4 x float> undef, %t1
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%t24 = fadd fast <4 x float> %t23, undef
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tail call void @wombat(<4 x float> %t24)
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ret void
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}
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define half @test2() {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[T15:%.*]] = fsub fast half undef, undef
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; CHECK-NEXT: [[T15_NEG:%.*]] = fsub fast half 0xH8000, [[T15]]
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; CHECK-NEXT: [[T18:%.*]] = fadd fast half [[T15_NEG]], undef
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; CHECK-NEXT: ret half [[T18]]
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;
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%t15 = fsub fast half undef, undef
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%t17 = fsub fast half undef, %t15
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%t18 = fadd fast half undef, %t17
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ret half %t18
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}
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; Function Attrs: optsize
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declare <4 x float> @blam()
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; Function Attrs: optsize
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declare void @wombat(<4 x float>)
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