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| author | Dale Johannesen <dalej@apple.com> | 2010-04-06 21:59:56 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2010-04-06 21:59:56 +0000 |
| commit | d1976e35c47153e9e8515394257ca336b45e6fe2 (patch) | |
| tree | dcdfc03b910158ce7c1e023b423d9d3293b4835b /llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp | |
| parent | 4bd3dd956f69f6a6f5bfde04ea4a1acbff9a1183 (diff) | |
| download | bcm5719-llvm-d1976e35c47153e9e8515394257ca336b45e6fe2.tar.gz bcm5719-llvm-d1976e35c47153e9e8515394257ca336b45e6fe2.zip | |
Allow for the possibility that a debug-value points
to a SDNode that didn't have code generated for it.
llvm-svn: 100566
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp b/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp index 28ba343e7fe..de8f1a06fe7 100644 --- a/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp @@ -517,8 +517,19 @@ MachineInstr *InstrEmitter::EmitDbgValue(SDDbgValue *SD, const TargetInstrDesc &II = TII->get(TargetOpcode::DBG_VALUE); MachineInstrBuilder MIB = BuildMI(*MF, DL, II); if (SD->getKind() == SDDbgValue::SDNODE) { - AddOperand(&*MIB, SDValue(SD->getSDNode(), SD->getResNo()), - (*MIB).getNumOperands(), &II, VRBaseMap, true /*IsDebug*/); + SDNode *Node = SD->getSDNode(); + SDValue Op = SDValue(Node, SD->getResNo()); + // It's possible we replaced this SDNode with other(s) and therefore + // didn't generate code for it. It's better to catch these cases where + // they happen and transfer the debug info, but trying to guarantee that + // in all cases would be very fragile; this is a safeguard for any + // that were missed. + DenseMap<SDValue, unsigned>::iterator I = VRBaseMap.find(Op); + if (I==VRBaseMap.end()) + MIB.addReg(0U); // undef + else + AddOperand(&*MIB, Op, (*MIB).getNumOperands(), &II, VRBaseMap, + true /*IsDebug*/); } else if (SD->getKind() == SDDbgValue::CONST) { Value *V = SD->getConst(); if (ConstantInt *CI = dyn_cast<ConstantInt>(V)) { |
