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JitArm64: srawix cleanups.

This commit is contained in:
degasus 2016-10-28 08:38:19 +02:00
parent c69903eb42
commit 0a3e5a0fe8
1 changed files with 53 additions and 26 deletions
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79
Source/Core/Core/PowerPC/JitArm64/JitArm64_Integer.cpp
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@ -576,6 +576,7 @@ void JitArm64::srawix(UGeckoInstruction inst)
int a = inst.RA;
int s = inst.RS;
int amount = inst.SH;
bool inplace_carry = MergeAllowedNextInstructions(1) && js.op[1].wantsCAInFlags;
if (gpr.IsImm(s))
{
@ -587,31 +588,7 @@ void JitArm64::srawix(UGeckoInstruction inst)
else
ComputeCarry(false);
}
else if (amount != 0)
{
gpr.BindToRegister(a, a == s);
ARM64Reg RA = gpr.R(a);
ARM64Reg RS = gpr.R(s);
ARM64Reg WA;
if (js.op->wantsCA)
{
WA = gpr.GetReg();
ORR(WA, WSP, RS, ArithOption(RS, ST_LSL, 32 - amount));
}
ORR(RA, WSP, RS, ArithOption(RS, ST_ASR, amount));
if (inst.Rc)
ComputeRC(RA, 0);
if (js.op->wantsCA)
{
ANDS(WSP, WA, RA);
CSINC(WA, WSP, WSP, CC_EQ);
STRB(INDEX_UNSIGNED, WA, PPC_REG, PPCSTATE_OFF(xer_ca));
gpr.Unlock(WA);
}
}
else
else if (amount == 0)
{
gpr.BindToRegister(a, a == s);
ARM64Reg RA = gpr.R(a);
@ -619,6 +596,47 @@ void JitArm64::srawix(UGeckoInstruction inst)
MOV(RA, RS);
ComputeCarry(false);
}
else
{
gpr.BindToRegister(a, a == s);
ARM64Reg RA = gpr.R(a);
ARM64Reg RS = gpr.R(s);
if (js.op->wantsCA)
{
ARM64Reg WA = gpr.GetReg();
ARM64Reg dest = inplace_carry ? WA : WSP;
if (a != s)
{
ASR(RA, RS, amount);
ANDS(dest, RA, RS, ArithOption(RS, ST_LSL, 32 - amount));
}
else
{
LSL(WA, RS, 32 - amount);
ASR(RA, RS, amount);
ANDS(dest, WA, RA);
}
if (inplace_carry)
{
CMP(dest, 1);
ComputeCarry();
}
else
{
CSINC(WA, WSP, WSP, CC_EQ);
STRB(INDEX_UNSIGNED, WA, PPC_REG, PPCSTATE_OFF(xer_ca));
}
gpr.Unlock(WA);
}
else
{
ASR(RA, RS, amount);
}
if (inst.Rc)
ComputeRC(RA, 0);
}
}
void JitArm64::addic(UGeckoInstruction inst)
@ -1266,6 +1284,7 @@ void JitArm64::srawx(UGeckoInstruction inst)
JITDISABLE(bJITIntegerOff);
int a = inst.RA, b = inst.RB, s = inst.RS;
bool inplace_carry = MergeAllowedNextInstructions(1) && js.op[1].wantsCAInFlags;
if (gpr.IsImm(b) && gpr.IsImm(s))
{
@ -1337,7 +1356,15 @@ void JitArm64::srawx(UGeckoInstruction inst)
SetJumpTarget(end);
MOV(gpr.R(a), WB);
STRB(INDEX_UNSIGNED, WA, PPC_REG, PPCSTATE_OFF(xer_ca));
if (inplace_carry)
{
CMP(WA, 1);
ComputeCarry();
}
else
{
STRB(INDEX_UNSIGNED, WA, PPC_REG, PPCSTATE_OFF(xer_ca));
}
gpr.Unlock(WA, WB, WC);
}