diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils/LowerSwitch.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/LowerSwitch.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Utils/LowerSwitch.cpp b/llvm/lib/Transforms/Utils/LowerSwitch.cpp index 680b5d31a42..8062fe49908 100644 --- a/llvm/lib/Transforms/Utils/LowerSwitch.cpp +++ b/llvm/lib/Transforms/Utils/LowerSwitch.cpp @@ -584,6 +584,11 @@ void LowerSwitch::processSwitchInst(SwitchInst *SI, PopSucc->removePredecessor(OrigBlock); return; } + + // If the condition was a PHI node with the switch block as a predecessor + // removing predecessors may have caused the condition to be erased. + // Getting the condition value again here protects against that. + Val = SI->getCondition(); } // Create a new, empty default block so that the new hierarchy of |
