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PPCRec: New compare and cond jump instrs, update RA

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Storing the condition result in a register instead of imitating PPC CR lets us simplify the backend a lot. Only implemented as PoC for BDZ/BDNZ so far.
This commit is contained in:
Exzap 2022-12-17 21:06:27 +01:00
parent d0590ef1f5
commit a51a8bb7d5
19 changed files with 609 additions and 323 deletions
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48
src/Cafe/HW/Espresso/Recompiler/IML/IMLInstruction.cpp
View file

@ -141,6 +141,21 @@ void IMLInstruction::CheckRegisterUsage(IMLUsedRegisters* registersUsed) const
else
cemu_assert_unimplemented();
}
else if (type == PPCREC_IML_TYPE_COMPARE)
{
registersUsed->readNamedReg1 = op_compare.registerOperandA;
registersUsed->readNamedReg2 = op_compare.registerOperandB;
registersUsed->writtenNamedReg1 = op_compare.registerResult;
}
else if (type == PPCREC_IML_TYPE_COMPARE_S32)
{
registersUsed->readNamedReg1 = op_compare_s32.registerOperandA;
registersUsed->writtenNamedReg1 = op_compare_s32.registerResult;
}
else if (type == PPCREC_IML_TYPE_CONDITIONAL_JUMP)
{
registersUsed->readNamedReg1 = op_conditionalJump2.registerBool;
}
else if (type == PPCREC_IML_TYPE_LOAD)
{
registersUsed->writtenNamedReg1 = op_storeLoad.registerData;
@ -455,17 +470,30 @@ void IMLInstruction::ReplaceGPR(sint32 gprRegisterSearched[4], sint32 gprRegiste
}
else if (type == PPCREC_IML_TYPE_R_R_S32)
{
// in all cases result is written and other operand is read only
op_r_r_s32.registerResult = replaceRegisterMultiple(op_r_r_s32.registerResult, gprRegisterSearched, gprRegisterReplaced);
op_r_r_s32.registerA = replaceRegisterMultiple(op_r_r_s32.registerA, gprRegisterSearched, gprRegisterReplaced);
}
else if (type == PPCREC_IML_TYPE_R_R_R)
{
// in all cases result is written and other operands are read only
op_r_r_r.registerResult = replaceRegisterMultiple(op_r_r_r.registerResult, gprRegisterSearched, gprRegisterReplaced);
op_r_r_r.registerA = replaceRegisterMultiple(op_r_r_r.registerA, gprRegisterSearched, gprRegisterReplaced);
op_r_r_r.registerB = replaceRegisterMultiple(op_r_r_r.registerB, gprRegisterSearched, gprRegisterReplaced);
}
else if (type == PPCREC_IML_TYPE_COMPARE)
{
op_compare.registerResult = replaceRegisterMultiple(op_compare.registerResult, gprRegisterSearched, gprRegisterReplaced);
op_compare.registerOperandA = replaceRegisterMultiple(op_compare.registerOperandA, gprRegisterSearched, gprRegisterReplaced);
op_compare.registerOperandB = replaceRegisterMultiple(op_compare.registerOperandB, gprRegisterSearched, gprRegisterReplaced);
}
else if (type == PPCREC_IML_TYPE_COMPARE_S32)
{
op_compare_s32.registerResult = replaceRegisterMultiple(op_compare_s32.registerResult, gprRegisterSearched, gprRegisterReplaced);
op_compare_s32.registerOperandA = replaceRegisterMultiple(op_compare_s32.registerOperandA, gprRegisterSearched, gprRegisterReplaced);
}
else if (type == PPCREC_IML_TYPE_CONDITIONAL_JUMP)
{
op_conditionalJump2.registerBool = replaceRegisterMultiple(op_conditionalJump2.registerBool, gprRegisterSearched, gprRegisterReplaced);
}
else if (type == PPCREC_IML_TYPE_CJUMP || type == PPCREC_IML_TYPE_CJUMP_CYCLE_CHECK)
{
// no effect on registers
@ -627,13 +655,17 @@ void IMLInstruction::ReplaceFPRs(sint32 fprRegisterSearched[4], sint32 fprRegist
{
// not affected
}
else if (type == PPCREC_IML_TYPE_COMPARE || type == PPCREC_IML_TYPE_COMPARE_S32 || type == PPCREC_IML_TYPE_CONDITIONAL_JUMP)
{
// not affected
}
else if (type == PPCREC_IML_TYPE_CJUMP || type == PPCREC_IML_TYPE_CJUMP_CYCLE_CHECK)
{
// no effect on registers
// not affected
}
else if (type == PPCREC_IML_TYPE_NO_OP)
{
// no effect on registers
// not affected
}
else if (type == PPCREC_IML_TYPE_MACRO)
{
@ -737,13 +769,17 @@ void IMLInstruction::ReplaceFPR(sint32 fprRegisterSearched, sint32 fprRegisterRe
{
// not affected
}
else if (type == PPCREC_IML_TYPE_COMPARE || type == PPCREC_IML_TYPE_COMPARE_S32 || type == PPCREC_IML_TYPE_CONDITIONAL_JUMP)
{
// not affected
}
else if (type == PPCREC_IML_TYPE_CJUMP || type == PPCREC_IML_TYPE_CJUMP_CYCLE_CHECK)
{
// no effect on registers
// not affected
}
else if (type == PPCREC_IML_TYPE_NO_OP)
{
// no effect on registers
// not affected
}
else if (type == PPCREC_IML_TYPE_MACRO)
{