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21 lines
514 B
LLVM
21 lines
514 B
LLVM
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; RUN: llvm-as < %s | opt -reassociate -gcse -instcombine | llvm-dis | not grep add
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%a = weak global int 0
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%b = weak global int 0
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%c = weak global int 0
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%d = weak global int 0
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implementation
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int %foo() {
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%tmp.0 = load int* %a
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%tmp.1 = load int* %b
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%tmp.2 = add int %tmp.0, %tmp.1 ; (a+b)
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%tmp.4 = load int* %c
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%tmp.5 = add int %tmp.2, %tmp.4 ; (a+b)+c
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%tmp.8 = add int %tmp.0, %tmp.4 ; (a+c)
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%tmp.11 = add int %tmp.8, %tmp.1 ; (a+c)+b
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%RV = xor int %tmp.5, %tmp.11 ; X ^ X = 0
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ret int %RV
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}
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