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JitArm64_Integer: addzex - Optimize InHostCarry case for 0

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Before:
0x5280000d   mov    w13, #0x0                 ; =0
0x1a1f01ae   adc    w14, w13, wzr

After:
0x1a9f37ee   cset   w14, hs
This commit is contained in:
Sintendo 2024-12-28 23:26:55 +01:00
parent c817b4779d
commit d81bfe94eb
1 changed files with 8 additions and 5 deletions
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13
Source/Core/Core/PowerPC/JitArm64/JitArm64_Integer.cpp
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@ -10,7 +10,6 @@
#include "Common/BitUtils.h"
#include "Common/CommonTypes.h"
#include "Common/MathUtil.h"
#include "Common/Unreachable.h"
#include "Core/Core.h"
#include "Core/CoreTiming.h"
@ -1129,8 +1128,7 @@ void JitArm64::addzex(UGeckoInstruction inst)
int a = inst.RA, d = inst.RD;
if (gpr.IsImm(a) &&
(HasConstantCarry() || (js.carryFlag == CarryFlag::InPPCState && gpr.GetImm(a) == 0)))
if (gpr.IsImm(a) && (gpr.GetImm(a) == 0 || HasConstantCarry()))
{
const u32 imm = gpr.GetImm(a);
const bool is_all_ones = imm == 0xFFFFFFFF;
@ -1144,6 +1142,13 @@ void JitArm64::addzex(UGeckoInstruction inst)
ComputeCarry(false);
break;
}
case CarryFlag::InHostCarry:
{
gpr.BindToRegister(d, false);
CSET(gpr.R(d), CCFlags::CC_CS);
ComputeCarry(false);
break;
}
case CarryFlag::ConstantTrue:
{
gpr.SetImmediate(d, imm + 1);
@ -1156,8 +1161,6 @@ void JitArm64::addzex(UGeckoInstruction inst)
ComputeCarry(false);
break;
}
default:
Common::Unreachable();
}
}
else