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

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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54
Source/Core/Core/PowerPC/JitArm32/JitArm_Integer.cpp
View File

@ -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:
@ -459,12 +459,20 @@ void JitArm::arith(UGeckoInstruction inst)
case 13:
{
gpr.BindToRegister(d, d == a);
ARMReg rA = gpr.GetReg();
RD = gpr.R(d);
RA = gpr.R(a);
MOVI2R(rA, Imm[1]);
ADDS(RD, RA, rA);
gpr.Unlock(rA);
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:
@ -472,12 +480,20 @@ void JitArm::arith(UGeckoInstruction inst)
if (!isImm[0])
{
gpr.BindToRegister(d, d == a);
ARMReg rA = gpr.GetReg();
RD = gpr.R(d);
RA = gpr.R(a);
MOVI2R(rA, Imm[1]);
ADD(RD, RA, rA);
gpr.Unlock(rA);
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
{
@ -489,12 +505,22 @@ 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]);
ORR(RA, RS, rA);
gpr.Unlock(rA);
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: