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If dbg.declare from non-entry block is using alloca from entry block then use offset available in StaticAllocaMap to emit DBG_VALUE. Right now, this has no material impact because varible info also collected using offset table maintained in machine module info.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113967 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2010-09-15 14:48:53 +00:00
parent 40989a40f0
commit 1397fdc0ab
1 changed files with 14 additions and 2 deletions
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16
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@ -4117,9 +4117,21 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) {
DAG.AddDbgValue(SDV, N.getNode(), isParameter);
} else {
// 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.
// virtual register info from the FuncInfo.ValueMap.
if (!EmitFuncArgumentDbgValue(Address, Variable, 0, N)) {
// If variable is pinned by a alloca in dominating bb then
// use StaticAllocaMap.
if (const AllocaInst *AI = dyn_cast<AllocaInst>(Address)) {
DenseMap<const AllocaInst*, int>::iterator SI =
FuncInfo.StaticAllocaMap.find(AI);
if (SI != FuncInfo.StaticAllocaMap.end()) {
SDV = DAG.getDbgValue(Variable, SI->second,
0, dl, SDNodeOrder);
DAG.AddDbgValue(SDV, 0, false);
return 0;
}
}
// Otherwise add undef to help track missing debug info.
SDV = DAG.getDbgValue(Variable, UndefValue::get(Address->getType()),
0, dl, SDNodeOrder);
DAG.AddDbgValue(SDV, 0, false);