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[Packetizer] Add AliasAnalysis as a parameter to the packetizer

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This will make the depedence graph more accurate if an alias analysis
is provided. If nullptr is specified in its place, the behavior will
remain as it is currently.

llvm-svn: 255540
This commit is contained in:
Krzysztof Parzyszek
2015-12-14 20:35:13 +00:00
parent 2f264c31d3
commit dac7102874
4 changed files with 18 additions and 10 deletions
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18
llvm/lib/CodeGen/DFAPacketizer.cpp
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@@ -149,31 +149,35 @@ namespace llvm {
// DefaultVLIWScheduler - This class extends ScheduleDAGInstrs and overrides
// Schedule method to build the dependence graph.
class DefaultVLIWScheduler : public ScheduleDAGInstrs {
private:
AliasAnalysis *AA;
public:
DefaultVLIWScheduler(MachineFunction &MF, MachineLoopInfo &MLI);
DefaultVLIWScheduler(MachineFunction &MF, MachineLoopInfo &MLI,
AliasAnalysis *AA);
// Schedule - Actual scheduling work.
void schedule() override;
};
}
DefaultVLIWScheduler::DefaultVLIWScheduler(MachineFunction &MF,
MachineLoopInfo &MLI)
: ScheduleDAGInstrs(MF, &MLI) {
MachineLoopInfo &MLI,
AliasAnalysis *AA)
: ScheduleDAGInstrs(MF, &MLI), AA(AA) {
CanHandleTerminators = true;
}
void DefaultVLIWScheduler::schedule() {
// Build the scheduling graph.
buildSchedGraph(nullptr);
buildSchedGraph(AA);
}
// VLIWPacketizerList Ctor
VLIWPacketizerList::VLIWPacketizerList(MachineFunction &MF,
MachineLoopInfo &MLI)
: MF(MF) {
MachineLoopInfo &MLI, AliasAnalysis *AA)
: MF(MF), AA(AA) {
TII = MF.getSubtarget().getInstrInfo();
ResourceTracker = TII->CreateTargetScheduleState(MF.getSubtarget());
VLIWScheduler = new DefaultVLIWScheduler(MF, MLI);
VLIWScheduler = new DefaultVLIWScheduler(MF, MLI, AA);
}
// VLIWPacketizerList Dtor