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