diff options
Diffstat (limited to 'lib/VMCore/ConstantFold.cpp')
| -rw-r--r-- | lib/VMCore/ConstantFold.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/VMCore/ConstantFold.cpp b/lib/VMCore/ConstantFold.cpp index a21b4a28e4..3fea1910ff 100644 --- a/lib/VMCore/ConstantFold.cpp +++ b/lib/VMCore/ConstantFold.cpp @@ -511,10 +511,14 @@ Constant *llvm::ConstantFoldCastInstruction(unsigned opc, Constant *V, return Constant::getNullValue(DestTy); return UndefValue::get(DestTy); } + // No compile-time operations on this type yet. if (V->getType()->isPPC_FP128Ty() || DestTy->isPPC_FP128Ty()) return 0; + if (V->isNullValue() && !DestTy->isX86_MMXTy()) + return Constant::getNullValue(DestTy); + // If the cast operand is a constant expression, there's a few things we can // do to try to simplify it. if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) { |