forked from OSchip/llvm-project
24 lines
684 B
LLVM
24 lines
684 B
LLVM
; RUN: llvm-as < %s | llc -march=x86
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; PR833
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@G = weak global i32 0 ; <i32*> [#uses=3]
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define i32 @foo(i32 %X) {
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entry:
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%X_addr = alloca i32 ; <i32*> [#uses=3]
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store i32 %X, i32* %X_addr
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call void asm sideeffect "xchg{l} {$0,$1|$1,$0}", "=*m,=*r,m,1,~{dirflag},~{fpsr},~{flags}"( i32* @G, i32* %X_addr, i32* @G, i32 %X )
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%tmp1 = load i32* %X_addr ; <i32> [#uses=1]
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ret i32 %tmp1
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}
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define i32 @foo2(i32 %X) {
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entry:
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%X_addr = alloca i32 ; <i32*> [#uses=3]
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store i32 %X, i32* %X_addr
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call void asm sideeffect "xchg{l} {$0,$1|$1,$0}", "=*m,=*r,1,~{dirflag},~{fpsr},~{flags}"( i32* @G, i32* %X_addr, i32 %X )
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%tmp1 = load i32* %X_addr ; <i32> [#uses=1]
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ret i32 %tmp1
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}
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