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[AMDGPU] Factored out common part of GCNRPTracker::reset()

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Differential Revision: https://reviews.llvm.org/D47664

llvm-svn: 333931
This commit is contained in:
Stanislav Mekhanoshin 2018-06-04 17:21:54 +00:00
parent 5d9dbb96b7
commit d0dbf4d085
2 changed files with 17 additions and 11 deletions
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25
lib/Target/AMDGPU/GCNRegPressure.cpp
View File

@ -284,18 +284,27 @@ GCNRPTracker::LiveRegSet llvm::getLiveRegs(SlotIndex SI,
return LiveRegs;
}
void GCNUpwardRPTracker::reset(const MachineInstr &MI,
const LiveRegSet *LiveRegsCopy) {
MRI = &MI.getParent()->getParent()->getRegInfo();
void GCNRPTracker::reset(const MachineInstr &MI,
const LiveRegSet *LiveRegsCopy,
bool After) {
const MachineFunction &MF = *MI.getMF();
MRI = &MF.getRegInfo();
if (LiveRegsCopy) {
if (&LiveRegs != LiveRegsCopy)
LiveRegs = *LiveRegsCopy;
} else {
LiveRegs = getLiveRegsAfter(MI, LIS);
LiveRegs = After ? getLiveRegsAfter(MI, LIS)
: getLiveRegsBefore(MI, LIS);
}
MaxPressure = CurPressure = getRegPressure(*MRI, LiveRegs);
}
void GCNUpwardRPTracker::reset(const MachineInstr &MI,
const LiveRegSet *LiveRegsCopy) {
GCNRPTracker::reset(MI, LiveRegsCopy, true);
}
void GCNUpwardRPTracker::recede(const MachineInstr &MI) {
assert(MRI && "call reset first");
@ -349,13 +358,7 @@ bool GCNDownwardRPTracker::reset(const MachineInstr &MI,
NextMI = skipDebugInstructionsForward(NextMI, MBBEnd);
if (NextMI == MBBEnd)
return false;
if (LiveRegsCopy) {
if (&LiveRegs != LiveRegsCopy)
LiveRegs = *LiveRegsCopy;
} else {
LiveRegs = getLiveRegsBefore(*NextMI, LIS);
}
MaxPressure = CurPressure = getRegPressure(*MRI, LiveRegs);
GCNRPTracker::reset(*NextMI, LiveRegsCopy, false);
return true;
}

3
lib/Target/AMDGPU/GCNRegPressure.h
View File

@ -106,6 +106,9 @@ protected:
GCNRPTracker(const LiveIntervals &LIS_) : LIS(LIS_) {}
void reset(const MachineInstr &MI, const LiveRegSet *LiveRegsCopy,
bool After);
public:
// live regs for the current state
const decltype(LiveRegs) &getLiveRegs() const { return LiveRegs; }