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Remove an unnecessary restriction. MIsNeedChainEdge() should be checked even when scheduler AliasAnalysis is not 

enabled.  A good chunk of the MIsNeedChainEdge() is logic that is valid and should be applied even for targets
that are not using for alias analysis.

llvm-svn: 217706
This commit is contained in:
Owen Anderson 2014-09-12 21:17:55 +00:00
parent 359907decf
commit ec4f873d34
1 changed files with 1 additions and 1 deletions
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2
llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
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@ -664,7 +664,7 @@ void addChainDependency (AliasAnalysis *AA, const MachineFrameInfo *MFI,
bool isNormalMemory = false) {
// If this is a false dependency,
// do not add the edge, but rememeber the rejected node.
if (!AA || MIsNeedChainEdge(AA, MFI, SUa->getInstr(), SUb->getInstr())) {
if (MIsNeedChainEdge(AA, MFI, SUa->getInstr(), SUb->getInstr())) {
SDep Dep(SUa, isNormalMemory ? SDep::MayAliasMem : SDep::Barrier);
Dep.setLatency(TrueMemOrderLatency);
SUb->addPred(Dep);