diff options
Diffstat (limited to 'lib/Transforms/ExprTypeConvert.cpp')
| -rw-r--r-- | lib/Transforms/ExprTypeConvert.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Transforms/ExprTypeConvert.cpp b/lib/Transforms/ExprTypeConvert.cpp index 9fc9c93d4b..b30ddf1f29 100644 --- a/lib/Transforms/ExprTypeConvert.cpp +++ b/lib/Transforms/ExprTypeConvert.cpp @@ -206,6 +206,9 @@ bool llvm::ExpressionConvertibleToType(Value *V, const Type *Ty, } case Instruction::PHI: { PHINode *PN = cast<PHINode>(I); + // Be conservative if we find a giant PHI node. + if (PN->getNumIncomingValues() > 32) return false; + for (unsigned i = 0; i < PN->getNumIncomingValues(); ++i) if (!ExpressionConvertibleToType(PN->getIncomingValue(i), Ty, CTMap, TD)) return false; @@ -815,6 +818,9 @@ static bool OperandConvertibleToType(User *U, Value *V, const Type *Ty, case Instruction::PHI: { PHINode *PN = cast<PHINode>(I); + // Be conservative if we find a giant PHI node. + if (PN->getNumIncomingValues() > 32) return false; + for (unsigned i = 0; i < PN->getNumIncomingValues(); ++i) if (!ExpressionConvertibleToType(PN->getIncomingValue(i), Ty, CTMap, TD)) return false; |