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f08872048f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93775 91177308-0d34-0410-b5e6-96231b3b80d8
35 lines
754 B
LLVM
35 lines
754 B
LLVM
; RUN: opt < %s -reassociate -die -S | FileCheck %s
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define i32 @test1(i32 %a, i32 %b) {
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%tmp.2 = and i32 %b, %a
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%tmp.4 = xor i32 %a, -1
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; (A&B)&~A == 0
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%tmp.5 = and i32 %tmp.2, %tmp.4
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ret i32 %tmp.5
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; CHECK: @test1
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; CHECK: ret i32 0
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}
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define i32 @test2(i32 %a, i32 %b) {
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%tmp.1 = and i32 %a, 1234
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%tmp.2 = and i32 %b, %tmp.1
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%tmp.4 = xor i32 %a, -1
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; A&~A == 0
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%tmp.5 = and i32 %tmp.2, %tmp.4
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ret i32 %tmp.5
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; CHECK: @test2
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; CHECK: ret i32 0
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}
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define i32 @test3(i32 %b, i32 %a) {
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%tmp.1 = add i32 %a, 1234
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%tmp.2 = add i32 %b, %tmp.1
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%tmp.4 = sub i32 0, %a
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; (b+(a+1234))+-a -> b+1234
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%tmp.5 = add i32 %tmp.2, %tmp.4
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ret i32 %tmp.5
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; CHECK: @test3
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; CHECK: %tmp.5 = add i32 %b, 1234
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; CHECK: ret i32 %tmp.5
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}
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