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armjit: Optimize movz/movn with immediates.

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Unknown W. Brackets 2013-11-08 09:39:45 -08:00
parent 376918c408
commit a435c9dd13
1 changed files with 30 additions and 24 deletions
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54
Core/MIPS/ARM/ArmCompALU.cpp
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@ -230,48 +230,54 @@ namespace MIPSComp
switch (op & 63)
{
case 10: //if (!R(rt)) R(rd) = R(rs); break; //movz
if (rd == rs)
if (rd == rs || (gpr.IsImm(rd) && gpr.IsImm(rs) && gpr.GetImm(rd) == gpr.GetImm(rs)))
break;
if (!gpr.IsImm(rt))
{
gpr.MapDirtyInIn(rd, rt, rs, false);
if (!gpr.IsImm(rt)) {
Operand2 op2;
// Avoid flushing the imm if possible.
if (gpr.IsImm(rs) && TryMakeOperand2(gpr.GetImm(rs), op2)) {
gpr.MapDirtyIn(rd, rt, false);
} else {
gpr.MapDirtyInIn(rd, rt, rs, false);
op2 = gpr.R(rs);
}
CMP(gpr.R(rt), Operand2(0));
SetCC(CC_EQ);
MOV(gpr.R(rd), Operand2(gpr.R(rs)));
MOV(gpr.R(rd), op2);
SetCC(CC_AL);
}
else if (gpr.GetImm(rt) == 0)
{
} else if (gpr.GetImm(rt) == 0) {
// Yes, this actually happens.
if (gpr.IsImm(rs))
if (gpr.IsImm(rs)) {
gpr.SetImm(rd, gpr.GetImm(rs));
else
{
} else {
gpr.MapDirtyIn(rd, rs);
MOV(gpr.R(rd), Operand2(gpr.R(rs)));
MOV(gpr.R(rd), gpr.R(rs));
}
}
break;
case 11:// if (R(rt)) R(rd) = R(rs); break; //movn
if (rd == rs)
if (rd == rs || (gpr.IsImm(rd) && gpr.IsImm(rs) && gpr.GetImm(rd) == gpr.GetImm(rs)))
break;
if (!gpr.IsImm(rt))
{
gpr.MapDirtyInIn(rd, rt, rs, false);
if (!gpr.IsImm(rt)) {
Operand2 op2;
// Avoid flushing the imm if possible.
if (gpr.IsImm(rs) && TryMakeOperand2(gpr.GetImm(rs), op2)) {
gpr.MapDirtyIn(rd, rt, false);
} else {
gpr.MapDirtyInIn(rd, rt, rs, false);
op2 = gpr.R(rs);
}
CMP(gpr.R(rt), Operand2(0));
SetCC(CC_NEQ);
MOV(gpr.R(rd), Operand2(gpr.R(rs)));
MOV(gpr.R(rd), op2);
SetCC(CC_AL);
}
else if (gpr.GetImm(rt) != 0)
{
} else if (gpr.GetImm(rt) != 0) {
// Yes, this actually happens.
if (gpr.IsImm(rs))
if (gpr.IsImm(rs)) {
gpr.SetImm(rd, gpr.GetImm(rs));
else
{
} else {
gpr.MapDirtyIn(rd, rs);
MOV(gpr.R(rd), Operand2(gpr.R(rs)));
MOV(gpr.R(rd), gpr.R(rs));
}
}
break;