6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-28 06:32:09 +00:00
Code Issues Projects Releases Wiki Activity

In ScheduleDAGRRList::CopyAndMoveSuccessors, create the SUnit for the load

Browse Source 
before creating the SUnit for the operation that it was unfolded from. This
allows each SUnit to have all of its predecessor SUnits available at the time
it is created. I don't know yet if this will be absolutely required, but it
is a little tidier to do it this way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59083 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-11-11 21:34:44 +00:00
parent eb9dbf117f
commit b13af2f2ec
1 changed files with 17 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
View File

@ -666,6 +666,23 @@ SUnit *ScheduleDAGRRList::CopyAndMoveSuccessors(SUnit *SU) {
DAG.ReplaceAllUsesOfValueWith(SDValue(SU->Node, OldNumVals-1),
SDValue(LoadNode, 1));
// LoadNode may already exist. This can happen when there is another
// load from the same location and producing the same type of value
// but it has different alignment or volatileness.
bool isNewLoad = true;
SUnit *LoadSU;
if (LoadNode->getNodeId() != -1) {
LoadSU = &SUnits[LoadNode->getNodeId()];
isNewLoad = false;
} else {
LoadSU = CreateNewSUnit(LoadNode);
LoadNode->setNodeId(LoadSU->NodeNum);
LoadSU->Depth = SU->Depth;
LoadSU->Height = SU->Height;
ComputeLatency(LoadSU);
}
SUnit *NewSU = CreateNewSUnit(N);
assert(N->getNodeId() == -1 && "Node already inserted!");
N->setNodeId(NewSU->NodeNum);
@ -684,23 +701,6 @@ SUnit *ScheduleDAGRRList::CopyAndMoveSuccessors(SUnit *SU) {
NewSU->Height = SU->Height;
ComputeLatency(NewSU);
// LoadNode may already exist. This can happen when there is another
// load from the same location and producing the same type of value
// but it has different alignment or volatileness.
bool isNewLoad = true;
SUnit *LoadSU;
if (LoadNode->getNodeId() != -1) {
LoadSU = &SUnits[LoadNode->getNodeId()];
isNewLoad = false;
} else {
LoadSU = CreateNewSUnit(LoadNode);
LoadNode->setNodeId(LoadSU->NodeNum);
LoadSU->Depth = SU->Depth;
LoadSU->Height = SU->Height;
ComputeLatency(LoadSU);
}
SUnit *ChainPred = NULL;
SmallVector<SDep, 4> ChainSuccs;
SmallVector<SDep, 4> LoadPreds;