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[nfc][mlgo][regalloc] 'hasPreferredPhys' out of feature components 

It isn't cacheable, it can be updated by other events than live interval
resizing.
This commit is contained in:
Mircea Trofin 2022-01-31 18:59:47 -08:00
parent ef72739eac
commit a3f1491849
1 changed files with 1 additions and 3 deletions
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4
llvm/lib/CodeGen/MLRegallocEvictAdvisor.cpp
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@ -230,7 +230,6 @@ struct LIFeatureComponents {
double HintWeights = 0.0;
int64_t NrDefsAndUses = 0;
float HottestBlockFreq = 0.0;
bool HasPreferredReg = false;
bool IsRemat = false;
};
@ -692,7 +691,6 @@ MLEvictAdvisor::getLIFeatureComponents(const LiveInterval &LI) const {
LIFeatureComponents Ret;
SmallPtrSet<MachineInstr *, 8> Visited;
const TargetRegisterInfo &TRI = *MF.getSubtarget().getRegisterInfo();
Ret.HasPreferredReg = VRM->hasPreferredPhys(LI.reg());
for (MachineRegisterInfo::reg_instr_nodbg_iterator
I = MRI->reg_instr_nodbg_begin(LI.reg()),
@ -772,7 +770,7 @@ void MLEvictAdvisor::extractFeatures(
if (LI.endIndex() > EndSI)
EndSI = LI.endIndex();
const LIFeatureComponents LIFC = getLIFeatureComponents(LI);
NrBrokenHints += LIFC.HasPreferredReg;
NrBrokenHints += VRM->hasPreferredPhys(LI.reg());
NrDefsAndUses += LIFC.NrDefsAndUses;
HottestBlockFreq = std::max(HottestBlockFreq, LIFC.HottestBlockFreq);