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f6e180324e
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10843 91177308-0d34-0410-b5e6-96231b3b80d8
25 lines
782 B
LLVM
25 lines
782 B
LLVM
; Test for a problem afflicting several C++ programs in the testsuite. The
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; instcombine pass is trying to get rid of the cast in the invoke instruction,
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; inserting a cast of the return value after the PHI instruction, but which is
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; used by the PHI instruction. This is bad: because of the semantics of the
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; invoke instruction, we really cannot perform this transformation at all at
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; least without splitting the critical edge.
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;
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; RUN: llvm-as < %s | opt -instcombine -disable-output
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declare sbyte* %test()
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int %foo() {
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entry:
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br bool true, label %cont, label %call
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call:
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%P = invoke int*()* cast (sbyte*()* %test to int*()*)()
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to label %cont except label %N
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cont:
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%P2 = phi int* [%P, %call], [null, %entry]
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%V = load int* %P2
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ret int %V
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N:
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ret int 0
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}
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