forked from OSchip/llvm-project
28 lines
658 B
LLVM
28 lines
658 B
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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; -x + y => y - x
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define float @fneg_op0(float %x, float %y) {
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; CHECK-LABEL: @fneg_op0(
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; CHECK-NEXT: [[ADD:%.*]] = fsub float [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: ret float [[ADD]]
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;
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%neg = fsub float -0.0, %x
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%add = fadd float %neg, %y
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ret float %add
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}
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; x + -y => x - y
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define float @fneg_op1(float %x, float %y) {
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; CHECK-LABEL: @fneg_op1(
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; CHECK-NEXT: [[ADD:%.*]] = fsub float [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: ret float [[ADD]]
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;
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%neg = fsub float -0.0, %y
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%add = fadd float %x, %neg
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ret float %add
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}
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