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Provide an interface to transfer SDDbgValue from one SDNode to another.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124245 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2011-01-25 23:27:42 +00:00
parent e13359732a
commit a2e868d34c
3 changed files with 32 additions and 0 deletions
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7
include/llvm/CodeGen/SelectionDAG.h
View File

@ -100,6 +100,10 @@ public:
return DbgValMap[Node];
}
void removeSDDbgValues(const SDNode *Node) {
DbgValMap.erase(Node);
}
typedef SmallVector<SDDbgValue*,32>::iterator DbgIterator;
DbgIterator DbgBegin() { return DbgValues.begin(); }
DbgIterator DbgEnd() { return DbgValues.end(); }
@ -901,6 +905,9 @@ public:
SmallVector<SDDbgValue*,2> &GetDbgValues(const SDNode* SD) {
return DbgInfo->getSDDbgValues(SD);
}
/// TransferDbgValues - Transfer SDDbgValues.
void TransferDbgValues(SDValue From, SDValue To);
/// hasDebugValues - Return true if there are any SDDbgValue nodes associated
/// with this SelectionDAG.

8
lib/CodeGen/SelectionDAG/SDNodeDbgValue.h
View File

@ -83,6 +83,14 @@ public:
// Returns the SDNode* for a register ref
SDNode *getSDNode() { assert (kind==SDNODE); return u.s.Node; }
// setSDNode - If underlying SDNode is replaced by another node then
// SelectionDAG can use this to transfer DbgValue.
void setSDNode(SDNode *N, unsigned R) {
assert (kind==SDNODE);
u.s.Node = N;
u.s.ResNo = R;
}
// Returns the ResNo for a register ref
unsigned getResNo() { assert (kind==SDNODE); return u.s.ResNo; }

17
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
View File

@ -5424,6 +5424,23 @@ void SelectionDAG::AddDbgValue(SDDbgValue *DB, SDNode *SD, bool isParameter) {
SD->setHasDebugValue(true);
}
/// TransferDbgValues - Transfer SDDbgValues.
void SelectionDAG::TransferDbgValues(SDValue From, SDValue To) {
if (From == To || !From.getNode()->getHasDebugValue())
return;
SDNode *FromNode = From.getNode();
SDNode *ToNode = To.getNode();
SmallVector<SDDbgValue*,2> &DVs = GetDbgValues(FromNode);
DbgInfo->removeSDDbgValues(FromNode);
for (SmallVector<SDDbgValue *, 2>::iterator I = DVs.begin(), E = DVs.end();
I != E; ++I) {
if ((*I)->getKind() == SDDbgValue::SDNODE) {
AddDbgValue(*I, ToNode, false);
(*I)->setSDNode(ToNode, To.getResNo());
}
}
}
//===----------------------------------------------------------------------===//
// SDNode Class
//===----------------------------------------------------------------------===//