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578b3ccd8f
Differential Revision: http://reviews.llvm.org/D6430 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222879 91177308-0d34-0410-b5e6-96231b3b80d8
25 lines
652 B
LLVM
25 lines
652 B
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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; (x&z) ^ (y&z) -> (x^y)&z
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define i32 @test1(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: %tmp61 = xor i32 %x, %y
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; CHECK-NEXT: %tmp7 = and i32 %tmp61, %z
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; CHECK-NEXT: ret i32 %tmp7
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%tmp3 = and i32 %z, %x
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%tmp6 = and i32 %z, %y
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%tmp7 = xor i32 %tmp3, %tmp6
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ret i32 %tmp7
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}
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; (x & y) ^ (x|y) -> x^y
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define i32 @test2(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: %tmp7 = xor i32 %y, %x
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; CHECK-NEXT: ret i32 %tmp7
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%tmp3 = and i32 %y, %x
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%tmp6 = or i32 %y, %x
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%tmp7 = xor i32 %tmp3, %tmp6
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ret i32 %tmp7
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}
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