diff options
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index fd6d23e28f..414ae794b1 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -8162,7 +8162,7 @@ Instruction *InstCombiner::visitLoadInst(LoadInst &LI) { return 0; } -/// InstCombineStoreToCast - Fold 'store V, (cast P)' -> store (cast V), P' +/// InstCombineStoreToCast - Fold store V, (cast P) -> store (cast V), P /// when possible. static Instruction *InstCombineStoreToCast(InstCombiner &IC, StoreInst &SI) { User *CI = cast<User>(SI.getOperand(1)); @@ -8206,8 +8206,9 @@ static Instruction *InstCombineStoreToCast(InstCombiner &IC, StoreInst &SI) { if (isa<PointerType>(SIOp0->getType())) opcode = Instruction::PtrToInt; else if (const IntegerType* SITy = dyn_cast<IntegerType>(CastSrcTy)) - assert(DITy->getBitWidth() == SITy->getBitWidth() && - "Illegal store instruction"); + if (SITy->getBitWidth() != DITy->getBitWidth()) + return 0; // Don't do this transform on unequal bit widths. + // else, BitCast is fine } if (Constant *C = dyn_cast<Constant>(SIOp0)) NewCast = ConstantExpr::getCast(opcode, C, CastDstTy); |