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Merge pull request #13120 from Sintendo/mtspr

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JitArm64: Optimize mtspr
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Tilka 2024-10-11 21:42:12 +01:00 committed by GitHub
commit 8679d6c334
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3 changed files with 7 additions and 5 deletions
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8
Source/Core/Core/PowerPC/JitArm64/JitArm64_Integer.cpp
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@ -649,7 +649,7 @@ void JitArm64::cmp(UGeckoInstruction inst)
SXTW(CR, gpr.R(b)); SXTW(CR, gpr.R(b));
NEG(CR, CR); NEG(CR, CR);
} }
else if (gpr.IsImm(a) && gpr.GetImm(a) == 0xFFFFFFFF) else if (gpr.IsImm(a, 0xFFFFFFFF))
{ {
SXTW(CR, gpr.R(b)); SXTW(CR, gpr.R(b));
MVN(CR, CR); MVN(CR, CR);
@ -1640,7 +1640,7 @@ void JitArm64::divwx(UGeckoInstruction inst)
if (inst.Rc) if (inst.Rc)
ComputeRC0(imm_d); ComputeRC0(imm_d);
} }
else if (gpr.IsImm(a) && gpr.GetImm(a) == 0) else if (gpr.IsImm(a, 0))
{ {
// Zero divided by anything is always zero // Zero divided by anything is always zero
gpr.SetImmediate(d, 0); gpr.SetImmediate(d, 0);
@ -1829,7 +1829,7 @@ void JitArm64::slwx(UGeckoInstruction inst)
if (inst.Rc) if (inst.Rc)
ComputeRC0(gpr.GetImm(a)); ComputeRC0(gpr.GetImm(a));
} }
else if (gpr.IsImm(s) && gpr.GetImm(s) == 0) else if (gpr.IsImm(s, 0))
{ {
gpr.SetImmediate(a, 0); gpr.SetImmediate(a, 0);
if (inst.Rc) if (inst.Rc)
@ -1934,7 +1934,7 @@ void JitArm64::srawx(UGeckoInstruction inst)
ComputeRC0(gpr.GetImm(a)); ComputeRC0(gpr.GetImm(a));
return; return;
} }
else if (gpr.IsImm(s) && gpr.GetImm(s) == 0) else if (gpr.IsImm(s, 0))
{ {
gpr.SetImmediate(a, 0); gpr.SetImmediate(a, 0);
ComputeCarry(false); ComputeCarry(false);

2
Source/Core/Core/PowerPC/JitArm64/JitArm64_RegCache.h
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@ -285,6 +285,8 @@ public:
// Gets the immediate that a register is set to. Only valid for guest GPRs. // Gets the immediate that a register is set to. Only valid for guest GPRs.
u32 GetImm(size_t preg) const { return GetGuestGPROpArg(preg).GetImm(); } u32 GetImm(size_t preg) const { return GetGuestGPROpArg(preg).GetImm(); }
bool IsImm(size_t preg, u32 imm) { return IsImm(preg) && GetImm(preg) == imm; }
// Binds a guest GPR to a host register, optionally loading its value. // Binds a guest GPR to a host register, optionally loading its value.
// //
// preg: The guest register index. // preg: The guest register index.

2
Source/Core/Core/PowerPC/JitArm64/JitArm64_SystemRegisters.cpp
View File

@ -477,7 +477,7 @@ void JitArm64::mtspr(UGeckoInstruction inst)
} }
// OK, this is easy. // OK, this is easy.
ARM64Reg RD = gpr.R(inst.RD); ARM64Reg RD = gpr.IsImm(inst.RD, 0) ? ARM64Reg::WZR : gpr.R(inst.RD);
STR(IndexType::Unsigned, RD, PPC_REG, PPCSTATE_OFF_SPR(iIndex)); STR(IndexType::Unsigned, RD, PPC_REG, PPCSTATE_OFF_SPR(iIndex));
} }