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PPCAnalyst: Perform CR analysis for crXXX

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This commit is contained in:
JosJuice 2021-06-29 15:13:13 +02:00
parent 5d9838548b
commit d6987b98be
1 changed files with 17 additions and 0 deletions
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17
Source/Core/Core/PowerPC/PPCAnalyst.cpp
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@ -572,11 +572,26 @@ void PPCAnalyzer::SetInstructionStats(CodeBlock* block, CodeOp* code,
code->wantsCR = BitSet8(0);
if (opinfo->flags & FL_READ_ALL_CR)
{
code->wantsCR = BitSet8(0xFF);
}
else if (opinfo->flags & FL_READ_CRn)
{
code->wantsCR[code->inst.CRFS] = true;
}
else if (opinfo->flags & FL_READ_CR_BI)
{
code->wantsCR[code->inst.BI] = true;
}
else if (opinfo->type == OpType::CR)
{
code->wantsCR[code->inst.CRBA >> 2] = true;
code->wantsCR[code->inst.CRBB >> 2] = true;
// CR instructions only write to one bit of the destination CR,
// so treat the other three bits of the destination as inputs
code->wantsCR[code->inst.CRBD >> 2] = true;
}
code->outputCR = BitSet8(0);
if (opinfo->flags & FL_SET_ALL_CR)
@ -587,6 +602,8 @@ void PPCAnalyzer::SetInstructionStats(CodeBlock* block, CodeOp* code,
code->outputCR[0] = true;
else if ((opinfo->flags & FL_SET_CR1) || ((opinfo->flags & FL_RC_BIT_F) && code->inst.Rc))
code->outputCR[1] = true;
else if (opinfo->type == OpType::CR)
code->outputCR[code->inst.CRBD >> 2] = true;
code->wantsFPRF = (opinfo->flags & FL_READ_FPRF) != 0;
code->outputFPRF = (opinfo->flags & FL_SET_FPRF) != 0;