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Optimizes instructions in ARMv7's JIT inside of the arith function.

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For instructions where the second immediate value fits within an instruction encoding, just encode it directly in to the instruction.
This commit is contained in:
Ryan Houdek 2014-10-23 15:21:02 +00:00
parent 6743d6ef1f
commit 5bb19426b3
1 changed files with 40 additions and 14 deletions
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38
Source/Core/Core/PowerPC/JitArm32/JitArm_Integer.cpp
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@ -253,7 +253,7 @@ void JitArm::arith(UGeckoInstruction inst)
Imm[0] = gpr.GetImm(s);
}
isImm[1] = true;
Imm[1] = inst.UIMM << (shiftedImm ? 16 : 0);
Imm[1] = inst.UIMM;
break;
case 27: // xoris
shiftedImm = true;
@ -354,7 +354,7 @@ void JitArm::arith(UGeckoInstruction inst)
break;
case 24:
case 25:
gpr.SetImmediate(a, Or(Imm[0], Imm[1]));
gpr.SetImmediate(a, Or(Imm[0], Imm[1] << (shiftedImm ? 16 : 0)));
dest = a;
break;
case 26:
@ -459,26 +459,42 @@ void JitArm::arith(UGeckoInstruction inst)
case 13:
{
gpr.BindToRegister(d, d == a);
ARMReg rA = gpr.GetReg();
RD = gpr.R(d);
RA = gpr.R(a);
if (Imm[1] < 256)
{
ADDS(RD, RA, Imm[1]);
}
else
{
ARMReg rA = gpr.GetReg();
MOVI2R(rA, Imm[1]);
ADDS(RD, RA, rA);
gpr.Unlock(rA);
}
}
break;
case 14:
case 15: // Arg2 is always Imm
if (!isImm[0])
{
gpr.BindToRegister(d, d == a);
ARMReg rA = gpr.GetReg();
RD = gpr.R(d);
RA = gpr.R(a);
if (Imm[1] < 256)
{
ADD(RD, RA, Imm[1]);
}
else
{
ARMReg rA = gpr.GetReg();
MOVI2R(rA, Imm[1]);
ADD(RD, RA, rA);
gpr.Unlock(rA);
}
}
else
{
gpr.SetImmediate(d, Imm[1]);
@ -489,13 +505,23 @@ void JitArm::arith(UGeckoInstruction inst)
{
dest = a;
gpr.BindToRegister(a, s == a);
ARMReg rA = gpr.GetReg();
RS = gpr.R(s);
RA = gpr.R(a);
MOVI2R(rA, Imm[1]);
if (Imm[1] < 256)
{
// Rotation of encoding 8 is the same as << 16
Operand2 imm(Imm[1], shiftedImm ? 8 : 0);
ORR(RA, RS, imm);
}
else
{
ARMReg rA = gpr.GetReg();
MOVI2R(rA, Imm[1] << (shiftedImm ? 16 : 0));
ORR(RA, RS, rA);
gpr.Unlock(rA);
}
}
break;
case 26:
case 27: