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PPCRec: Fix single segment loop not being detected

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Also removed associatedPPCAddress field from IMLInstruction as it's no longer used
This commit is contained in:
Exzap 2022-12-12 15:33:01 +01:00
parent bb6b18d78f
commit 6cdcef880b
2 changed files with 5 additions and 106 deletions
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6
src/Cafe/HW/Espresso/Recompiler/IML/IMLDebug.cpp
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@ -152,11 +152,11 @@ void IMLDebug_DumpSegment(ppcImlGenContext_t* ctx, IMLSegment* imlSegment, bool
for (sint32 i = 0; i < imlSegment->imlList.size(); i++)
{
const IMLInstruction& inst = imlSegment->imlList[i];
// don't log NOP instructions unless they have an associated PPC address
if (inst.type == PPCREC_IML_TYPE_NO_OP && inst.associatedPPCAddress == MPTR_NULL)
// don't log NOP instructions
if (inst.type == PPCREC_IML_TYPE_NO_OP)
continue;
strOutput.reset();
strOutput.addFmt("{:08x} ", inst.associatedPPCAddress);
strOutput.addFmt("{:02x} ", i);
if (inst.type == PPCREC_IML_TYPE_R_NAME || inst.type == PPCREC_IML_TYPE_NAME_R)
{
if (inst.type == PPCREC_IML_TYPE_R_NAME)

105
src/Cafe/HW/Espresso/Recompiler/PPCRecompilerImlGen.cpp
View file

@ -4029,7 +4029,6 @@ IMLSegment* PPCIMLGen_CreateSplitSegmentAtEnd(ppcImlGenContext_t& ppcImlGenConte
{
IMLSegment* writeSegment = basicBlockInfo.GetSegmentForInstructionAppend();
//IMLSegment* continuedSegment = ppcImlGenContext.NewSegment();
IMLSegment* continuedSegment = ppcImlGenContext.InsertSegment(ppcImlGenContext.GetSegmentIndex(writeSegment) + 1);
continuedSegment->SetLinkBranchTaken(writeSegment->GetBranchTaken());
@ -4066,15 +4065,9 @@ void PPCIMLGen_AssertIfNotLastSegmentInstruction(ppcImlGenContext_t& ppcImlGenCo
void PPCRecompiler_HandleCycleCheckCount(ppcImlGenContext_t& ppcImlGenContext, PPCBasicBlockInfo& basicBlockInfo)
{
IMLSegment* imlSegment = basicBlockInfo.GetFirstSegmentInChain();
//if (imlSegment->imlList.empty())
// return;
//if (imlSegment->imlList[imlSegment->imlList.size() - 1].type != PPCREC_IML_TYPE_CJUMP || imlSegment->imlList[imlSegment->imlList.size() - 1].op_conditionalJump.jumpmarkAddress > imlSegment->ppcAddrMin)
// return;
//if (imlSegment->imlList[imlSegment->imlList.size() - 1].type != PPCREC_IML_TYPE_CJUMP || imlSegment->imlList[imlSegment->imlList.size() - 1].op_conditionalJump.jumpAccordingToSegment)
// return;
if (!basicBlockInfo.hasBranchTarget)
return;
if (basicBlockInfo.branchTarget >= basicBlockInfo.startAddress)
if (basicBlockInfo.branchTarget > basicBlockInfo.startAddress)
return;
// exclude non-infinite tight loops
@ -4089,116 +4082,22 @@ void PPCRecompiler_HandleCycleCheckCount(ppcImlGenContext_t& ppcImlGenContext, P
// The first segment also retains the jump destination and enterable properties from the original segment.
//debug_printf("--- Insert cycle counter check ---\n");
// make the segment enterable so execution can return after checking
basicBlockInfo.GetFirstSegmentInChain()->SetEnterable(basicBlockInfo.startAddress);
IMLSegment* splitSeg = PPCIMLGen_CreateSplitSegmentAtEnd(ppcImlGenContext, basicBlockInfo);
// what we know about the crash:
// It doesnt happen with cycle checks disabled
// The debugbreak emitted here is only encountered twice before it crashes
// it doesnt seem to go into the alternative branch (cycles negative) -> tested (debugbreak in exit segment doesnt trigger)
// Its the enterable segment that causes issues? -> I removed the enterable statement and it still happened
// Maybe some general issue with getting x64 offsets for enterable segments..
// possible explanations:
// issue with the cycle check / exit logic
// returning from exit is causing the issue
// Segments can get marked as jump destination which we no longer do -> Deleted old code and added asserts
IMLInstruction* inst = splitSeg->AppendInstruction();
inst->type = PPCREC_IML_TYPE_CJUMP_CYCLE_CHECK;
inst->operation = 0;
inst->crRegister = PPC_REC_INVALID_REGISTER;
inst->op_conditionalJump.jumpmarkAddress = 0xFFFFFFFF;
inst->associatedPPCAddress = 0xFFFFFFFF;
// PPCREC_IML_TYPE_CJUMP_CYCLE_CHECK
//splitSeg->AppendInstruction()->make_macro(PPCREC_IML_TYPE_MACRO, )
IMLSegment* exitSegment = ppcImlGenContext.NewSegment();
splitSeg->SetLinkBranchTaken(exitSegment);
//exitSegment->AppendInstruction()->make_debugbreak();
inst = exitSegment->AppendInstruction();// ->make_macro(PPCREC_IML_MACRO_LEAVE, basicBlockInfo.startAddress);
inst->type = PPCREC_IML_TYPE_MACRO;
inst->operation = PPCREC_IML_MACRO_LEAVE;
inst->crRegister = PPC_REC_INVALID_REGISTER;
inst->op_macro.param = basicBlockInfo.startAddress;
inst->associatedPPCAddress = basicBlockInfo.startAddress;
//debug_printf("----------------------------------------\n");
//IMLDebug_Dump(&ppcImlGenContext);
//__debugbreak();
//ppcImlGenContext.NewSegment();
//PPCRecompilerIml_insertSegments(&ppcImlGenContext, s, 2);
//imlSegment = NULL;
//IMLSegment* imlSegmentP0 = ppcImlGenContext.segmentList2[s + 0];
//IMLSegment* imlSegmentP1 = ppcImlGenContext.segmentList2[s + 1];
//IMLSegment* imlSegmentP2 = ppcImlGenContext.segmentList2[s + 2];
//// create entry point segment
//PPCRecompilerIml_insertSegments(&ppcImlGenContext, ppcImlGenContext.segmentList2.size(), 1);
//IMLSegment* imlSegmentPEntry = ppcImlGenContext.segmentList2[ppcImlGenContext.segmentList2.size() - 1];
//// relink segments
//IMLSegment_RelinkInputSegment(imlSegmentP2, imlSegmentP0);
//IMLSegment_SetLinkBranchNotTaken(imlSegmentP0, imlSegmentP1);
//IMLSegment_SetLinkBranchTaken(imlSegmentP0, imlSegmentP2);
//IMLSegment_SetLinkBranchTaken(imlSegmentPEntry, imlSegmentP0);
//// update segments
//uint32 enterPPCAddress = imlSegmentP2->ppcAddrMin;
//if (imlSegmentP2->isEnterable)
// enterPPCAddress = imlSegmentP2->enterPPCAddress;
//imlSegmentP0->ppcAddress = 0xFFFFFFFF;
//imlSegmentP1->ppcAddress = 0xFFFFFFFF;
//imlSegmentP2->ppcAddress = 0xFFFFFFFF;
//cemu_assert_debug(imlSegmentP2->ppcAddrMin != 0);
//// move segment properties from segment P2 to segment P0
//imlSegmentP0->isJumpDestination = imlSegmentP2->isJumpDestination;
//imlSegmentP0->jumpDestinationPPCAddress = imlSegmentP2->jumpDestinationPPCAddress;
//imlSegmentP0->isEnterable = false;
////imlSegmentP0->enterPPCAddress = imlSegmentP2->enterPPCAddress;
//imlSegmentP0->ppcAddrMin = imlSegmentP2->ppcAddrMin;
//imlSegmentP0->ppcAddrMax = imlSegmentP2->ppcAddrMax;
//imlSegmentP2->isJumpDestination = false;
//imlSegmentP2->jumpDestinationPPCAddress = 0;
//imlSegmentP2->isEnterable = false;
//imlSegmentP2->enterPPCAddress = 0;
//imlSegmentP2->ppcAddrMin = 0;
//imlSegmentP2->ppcAddrMax = 0;
//// setup enterable segment
//if (enterPPCAddress != 0 && enterPPCAddress != 0xFFFFFFFF)
//{
// imlSegmentPEntry->isEnterable = true;
// imlSegmentPEntry->ppcAddress = enterPPCAddress;
// imlSegmentPEntry->enterPPCAddress = enterPPCAddress;
//}
//// assign new jumpmark to segment P2
//imlSegmentP2->isJumpDestination = true;
//imlSegmentP2->jumpDestinationPPCAddress = currentLoopEscapeJumpMarker;
//currentLoopEscapeJumpMarker++;
//// create ppc_leave instruction in segment P1
//PPCRecompiler_pushBackIMLInstructions(imlSegmentP1, 0, 1);
//imlSegmentP1->imlList[0].type = PPCREC_IML_TYPE_MACRO;
//imlSegmentP1->imlList[0].operation = PPCREC_IML_MACRO_LEAVE;
//imlSegmentP1->imlList[0].crRegister = PPC_REC_INVALID_REGISTER;
//imlSegmentP1->imlList[0].op_macro.param = imlSegmentP0->ppcAddrMin;
//imlSegmentP1->imlList[0].associatedPPCAddress = imlSegmentP0->ppcAddrMin;
//// create cycle-based conditional instruction in segment P0
//PPCRecompiler_pushBackIMLInstructions(imlSegmentP0, 0, 1);
//imlSegmentP0->imlList[0].type = PPCREC_IML_TYPE_CJUMP_CYCLE_CHECK;
//imlSegmentP0->imlList[0].operation = 0;
//imlSegmentP0->imlList[0].crRegister = PPC_REC_INVALID_REGISTER;
//imlSegmentP0->imlList[0].op_conditionalJump.jumpmarkAddress = imlSegmentP2->jumpDestinationPPCAddress;
//imlSegmentP0->imlList[0].associatedPPCAddress = imlSegmentP0->ppcAddrMin;
//// jump instruction for PEntry
//PPCRecompiler_pushBackIMLInstructions(imlSegmentPEntry, 0, 1);
//PPCRecompilerImlGen_generateNewInstruction_jumpSegment(&ppcImlGenContext, imlSegmentPEntry->imlList.data() + 0);
exitSegment->AppendInstruction()->make_macro(PPCREC_IML_MACRO_LEAVE, basicBlockInfo.startAddress, 0, 0);
}
void PPCRecompiler_SetSegmentsUncertainFlow(ppcImlGenContext_t& ppcImlGenContext)