diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/FastISel.cpp')
-rw-r--r-- | lib/CodeGen/SelectionDAG/FastISel.cpp | 40 |
1 files changed, 26 insertions, 14 deletions
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp index b4ac948f..a6f7461 100644 --- a/lib/CodeGen/SelectionDAG/FastISel.cpp +++ b/lib/CodeGen/SelectionDAG/FastISel.cpp @@ -638,29 +638,25 @@ bool FastISel::SelectCall(const User *I) { (!isa<AllocaInst>(Address) || !FuncInfo.StaticAllocaMap.count(cast<AllocaInst>(Address)))) Op = MachineOperand::CreateReg(FuncInfo.InitializeRegForValue(Address), - false); + false); - if (Op) + if (Op) { if (Op->isReg()) { - // Set the indirect flag if the type and the DIVariable's - // indirect field are in disagreement: Indirectly-addressed - // variables that are nonpointer types should be marked as - // indirect, and VLAs should be marked as indirect eventhough - // they are a pointer type. - bool IsIndirect = DI->getAddress()->getType()->isPointerTy() - ^ DIVar.isIndirect(); Op->setIsDebug(true); BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, - TII.get(TargetOpcode::DBG_VALUE), - IsIndirect, Op->getReg(), Offset, DI->getVariable()); + TII.get(TargetOpcode::DBG_VALUE), false, Op->getReg(), 0, + DI->getVariable()); } else BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, - TII.get(TargetOpcode::DBG_VALUE)).addOperand(*Op).addImm(0) - .addMetadata(DI->getVariable()); - else + TII.get(TargetOpcode::DBG_VALUE)) + .addOperand(*Op) + .addImm(0) + .addMetadata(DI->getVariable()); + } else { // We can't yet handle anything else here because it would require // generating code, thus altering codegen because of debug info. DEBUG(dbgs() << "Dropping debug info for " << *DI << "\n"); + } return true; } case Intrinsic::dbg_value: { @@ -688,6 +684,7 @@ bool FastISel::SelectCall(const User *I) { .addFPImm(CF).addImm(DI->getOffset()) .addMetadata(DI->getVariable()); } else if (unsigned Reg = lookUpRegForValue(V)) { + // FIXME: This does not handle register-indirect values at offset 0. bool IsIndirect = DI->getOffset() != 0; BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, IsIndirect, Reg, DI->getOffset(), DI->getVariable()); @@ -1574,4 +1571,19 @@ bool FastISel::tryToFoldLoad(const LoadInst *LI, const Instruction *FoldInst) { return tryToFoldLoadIntoMI(User, RI.getOperandNo(), LI); } +bool FastISel::canFoldAddIntoGEP(const User *GEP, const Value *Add) { + // Must be an add. + if (!isa<AddOperator>(Add)) + return false; + // Type size needs to match. + if (TD.getTypeSizeInBits(GEP->getType()) != + TD.getTypeSizeInBits(Add->getType())) + return false; + // Must be in the same basic block. + if (isa<Instruction>(Add) && + FuncInfo.MBBMap[cast<Instruction>(Add)->getParent()] != FuncInfo.MBB) + return false; + // Must have a constant operand. + return isa<ConstantInt>(cast<AddOperator>(Add)->getOperand(1)); +} |