diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index e22fe19f9f8..285f7eba099 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -3871,7 +3871,7 @@ static bool getUniformBase(const Value* &Ptr, SDValue& Base, SDValue& Index, assert(Ptr->getType()->isVectorTy() && "Uexpected pointer type"); const GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(Ptr); - if (!GEP || GEP->getNumOperands() > 2) + if (!GEP) return false; const Value *GEPPtr = GEP->getPointerOperand(); @@ -3880,7 +3880,14 @@ static bool getUniformBase(const Value* &Ptr, SDValue& Base, SDValue& Index, else if (!(Ptr = getSplatValue(GEPPtr))) return false; - Value *IndexVal = GEP->getOperand(1); + unsigned FinalIndex = GEP->getNumOperands() - 1; + Value *IndexVal = GEP->getOperand(FinalIndex); + + // Ensure all the other indices are 0. + for (unsigned i = 1; i < FinalIndex; ++i) + if (auto *C = dyn_cast<ConstantInt>(GEP->getOperand(i))) + if (!C->isZero()) + return false; // The operands of the GEP may be defined in another basic block. // In this case we'll not find nodes for the operands. |
