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as the result of the binary operator is always constant. This does not require the PHI itself to be constant though. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10762 91177308-0d34-0410-b5e6-96231b3b80d8
24 lines
479 B
LLVM
24 lines
479 B
LLVM
; RUN: llvm-as < %s | opt -sccp -dce -simplifycfg | llvm-dis | not grep br
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int %test(int %param) {
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entry:
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%tmp.1 = setne int %param, 0
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br bool %tmp.1, label %endif.0, label %else
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else:
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br label %endif.0
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endif.0:
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%a.0 = phi int [ 2, %else ], [ 3, %entry ]
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%b.0 = phi int [ 3, %else ], [ 2, %entry ]
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%tmp.5 = add int %a.0, %b.0
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%tmp.7 = setne int %tmp.5, 5
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br bool %tmp.7, label %UnifiedReturnBlock, label %endif.1
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endif.1:
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ret int 0
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UnifiedReturnBlock:
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ret int 2
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}
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