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4458ab0d83
xor R, R is a common and valid idiom for zeroing a register, for example. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75571 91177308-0d34-0410-b5e6-96231b3b80d8
12 lines
481 B
LLVM
12 lines
481 B
LLVM
; RUN: llvm-as < %s | opt -simplifycfg | llvm-dis | grep xor
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; ModuleID = '<stdin>'
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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target triple = "i386-apple-darwin9.6"
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define void @bar() nounwind {
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entry:
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store i16 undef, i16* null
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%asmtmp = call i32 asm sideeffect "xor $0, $0", "=={bx},rm,~{dirflag},~{fpsr},~{flags},~{memory}"(i16 undef) nounwind ; <i32> [#uses=0]
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ret void
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}
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