diff options
Diffstat (limited to 'lib/Transforms/Scalar/SCCP.cpp')
-rw-r--r-- | lib/Transforms/Scalar/SCCP.cpp | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp index c4fc38ae08..1f8f452c36 100644 --- a/lib/Transforms/Scalar/SCCP.cpp +++ b/lib/Transforms/Scalar/SCCP.cpp @@ -408,15 +408,14 @@ private: return LV; // Common case, already in the map. if (Constant *C = dyn_cast<Constant>(V)) { - if (isa<UndefValue>(C)) - ; // Undef values remain undefined. - else if (ConstantStruct *CS = dyn_cast<ConstantStruct>(C)) - LV.markConstant(CS->getOperand(i)); // Constants are constant. - else if (isa<ConstantAggregateZero>(C)) { - Type *FieldTy = cast<StructType>(V->getType())->getElementType(i); - LV.markConstant(Constant::getNullValue(FieldTy)); - } else + Constant *Elt = C->getAggregateElement(i); + + if (Elt == 0) LV.markOverdefined(); // Unknown sort of constant. + else if (isa<UndefValue>(Elt)) + ; // Undef values remain undefined. + else + LV.markConstant(Elt); // Constants are constant. } // All others are underdefined by default. |