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PPCRec: Optimize register allocation

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This commit is contained in:
Exzap 2024-10-23 18:49:15 +02:00
parent 6833b33c31
commit 60d3233151
1 changed files with 21 additions and 10 deletions
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31
src/Cafe/HW/Espresso/Recompiler/IML/IMLRegisterAllocator.cpp
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@ -596,6 +596,11 @@ void IMLRA_HandleFixedRegisters(ppcImlGenContext_t* ppcImlGenContext, IMLSegment
for (raLivenessRange* currentRange = imlSegment->raInfo.linkedList_allSubranges; currentRange;)
{
IMLPhysRegisterSet allowedRegs;
if(currentRange->list_fixedRegRequirements.empty())
{
currentRange = currentRange->link_allSegmentRanges.next;
continue; // since we run this pass for every segment we dont need to do global checks here for clusters which may not even have fixed register requirements
}
if (!currentRange->GetAllowedRegistersEx(allowedRegs))
{
currentRange = currentRange->link_allSegmentRanges.next;
@ -689,16 +694,6 @@ void IMLRA_HandleFixedRegisters(ppcImlGenContext_t* ppcImlGenContext, IMLSegment
}
}
}
for (raLivenessRange* currentRange = imlSegment->raInfo.linkedList_allSubranges; currentRange; currentRange = currentRange->link_allSegmentRanges.next)
{
IMLPhysRegisterSet allowedRegs;
if (!currentRange->GetAllowedRegistersEx(allowedRegs))
{
cemu_assert_debug(currentRange->list_fixedRegRequirements.empty());
continue;
}
cemu_assert_debug(currentRange->HasPhysicalRegister() && allowedRegs.IsAvailable(currentRange->GetPhysicalRegister()));
}
#endif
}
@ -1275,6 +1270,22 @@ void IMLRA_AssignRegisters(IMLRegisterAllocatorContext& ctx, ppcImlGenContext_t*
// assign fixed registers first
for (IMLSegment* segIt : ppcImlGenContext->segmentList2)
IMLRA_HandleFixedRegisters(ppcImlGenContext, segIt);
#if DEBUG_RA_EXTRA_VALIDATION
// fixed registers are currently handled per-segment, but here we validate that they are assigned correctly on a global scope as well
for (IMLSegment* imlSegment : ppcImlGenContext->segmentList2)
{
for (raLivenessRange* currentRange = imlSegment->raInfo.linkedList_allSubranges; currentRange; currentRange = currentRange->link_allSegmentRanges.next)
{
IMLPhysRegisterSet allowedRegs;
if (!currentRange->GetAllowedRegistersEx(allowedRegs))
{
cemu_assert_debug(currentRange->list_fixedRegRequirements.empty());
continue;
}
cemu_assert_debug(currentRange->HasPhysicalRegister() && allowedRegs.IsAvailable(currentRange->GetPhysicalRegister()));
}
}
#endif
while (true)
{