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PPCRec: Some fixes

This commit is contained in:
Exzap 2024-10-19 02:11:26 +02:00
parent dcbaa5a43a
commit a0ad48c981
2 changed files with 10 additions and 4 deletions
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8
src/Cafe/HW/Espresso/Recompiler/BackendX64/BackendX64.cpp
View File

@ -1000,7 +1000,8 @@ bool PPCRecompilerX64Gen_imlInstruction_r_r_r_carry(PPCRecFunction_t* PPCRecFunc
auto regA = _reg32(imlInstruction->op_r_r_r_carry.regA);
auto regB = _reg32(imlInstruction->op_r_r_r_carry.regB);
auto regCarry = _reg32(imlInstruction->op_r_r_r_carry.regCarry);
cemu_assert_debug(regCarry != regR && regCarry != regA);
bool carryRegIsShared = regCarry == regA || regCarry == regB;
cemu_assert_debug(regCarry != regR); // two outputs sharing the same register is undefined behavior
switch (imlInstruction->operation)
{
@ -1009,9 +1010,12 @@ bool PPCRecompilerX64Gen_imlInstruction_r_r_r_carry(PPCRecFunction_t* PPCRecFunc
std::swap(regB, regA);
if (regR != regA)
x64GenContext->emitter->MOV_dd(regR, regA);
x64GenContext->emitter->XOR_dd(regCarry, regCarry);
if(!carryRegIsShared)
x64GenContext->emitter->XOR_dd(regCarry, regCarry);
x64GenContext->emitter->ADD_dd(regR, regB);
x64GenContext->emitter->SETcc_b(X86_CONDITION_B, _reg8_from_reg32(regCarry)); // below condition checks carry flag
if(carryRegIsShared)
x64GenContext->emitter->AND_di8(regCarry, 1); // clear upper bits
break;
case PPCREC_IML_OP_ADD_WITH_CARRY:
// assumes that carry is already correctly initialized as 0 or 1

6
src/Cafe/HW/Espresso/Recompiler/IML/IMLRegisterAllocatorRanges.cpp
View File

@ -133,9 +133,11 @@ void PPCRecRARange_addLink_perVirtualGPR(std::unordered_map<IMLRegID, raLiveness
else
{
// insert in first position
subrange->link_sameVirtualRegister.next = it->second;
raLivenessRange* priorFirst = it->second;
subrange->link_sameVirtualRegister.next = priorFirst;
it->second = subrange;
subrange->link_sameVirtualRegister.prev = subrange;
subrange->link_sameVirtualRegister.prev = nullptr;
priorFirst->link_sameVirtualRegister.prev = subrange;
}
}