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If node is not available then use FuncInfo.ValueMap to emit debug info for byval parameter. 

llvm-svn: 112238
This commit is contained in:
Devang Patel 2010-08-26 22:53:27 +00:00
parent 2a1915d04b
commit ea134f56b1
1 changed files with 9 additions and 5 deletions
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14
llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@ -3947,7 +3947,7 @@ SelectionDAGBuilder::EmitFuncArgumentDbgValue(const Value *V, MDNode *Variable,
return false;
unsigned Reg = 0;
if (N.getOpcode() == ISD::CopyFromReg) {
if (N.getNode() && N.getOpcode() == ISD::CopyFromReg) {
Reg = cast<RegisterSDNode>(N.getOperand(1))->getReg();
if (Reg && TargetRegisterInfo::isVirtualRegister(Reg)) {
MachineRegisterInfo &RegInfo = MF.getRegInfo();
@ -4111,10 +4111,14 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) {
return 0;
DAG.AddDbgValue(SDV, N.getNode(), isParameter);
} else {
// This isn't useful, but it shows what we're missing.
SDV = DAG.getDbgValue(Variable, UndefValue::get(Address->getType()),
0, dl, SDNodeOrder);
DAG.AddDbgValue(SDV, 0, isParameter);
// If Address is an arugment then try to emits its dbg value using
// virtual register info from the FuncInfo.ValueMap. Otherwise add undef
// to help track missing debug info.
if (!EmitFuncArgumentDbgValue(Address, Variable, 0, N)) {
SDV = DAG.getDbgValue(Variable, UndefValue::get(Address->getType()),
0, dl, SDNodeOrder);
DAG.AddDbgValue(SDV, 0, isParameter);
}
}
return 0;
}