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CPU/PGXP: Minor optimization to shift instructions

This commit is contained in:
Stenzek 2024-05-17 20:41:55 +10:00
parent 3fd86a69a4
commit 37b1aa45dd
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1 changed files with 63 additions and 57 deletions
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120
src/core/cpu_pgxp.cpp
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@ -1419,13 +1419,12 @@ void CPU::PGXP::CPU_SLL(u32 instr, u32 rtVal)
// Rd = Rt << Sa
const u32 rdVal = rtVal << sa(instr);
const u32 sh = sa(instr);
Validate(&g_state.pgxp_gpr[rt(instr)], rtVal);
PGXP_value ret = g_state.pgxp_gpr[rt(instr)];
PGXP_value& prtVal = g_state.pgxp_gpr[rt(instr)];
Validate(&prtVal, rtVal);
// TODO: Shift flags
double x = f16Unsign(g_state.pgxp_gpr[rt(instr)].x);
double y = f16Unsign(g_state.pgxp_gpr[rt(instr)].y);
double x = f16Unsign(prtVal.x);
double y = f16Unsign(prtVal.y);
if (sh >= 32)
{
x = 0.f;
@ -1451,11 +1450,11 @@ void CPU::PGXP::CPU_SLL(u32 instr, u32 rtVal)
y = f16Sign(y);
}
ret.x = (float)x;
ret.y = (float)y;
ret.value = rdVal;
g_state.pgxp_gpr[rd(instr)] = ret;
PGXP_value& prdVal = g_state.pgxp_gpr[rd(instr)];
prdVal = prtVal;
prdVal.x = static_cast<float>(x);
prdVal.y = static_cast<float>(y);
prdVal.value = rdVal;
}
void CPU::PGXP::CPU_SRL(u32 instr, u32 rtVal)
@ -1465,9 +1464,11 @@ void CPU::PGXP::CPU_SRL(u32 instr, u32 rtVal)
// Rd = Rt >> Sa
const u32 rdVal = rtVal >> sa(instr);
const u32 sh = sa(instr);
Validate(&g_state.pgxp_gpr[rt(instr)], rtVal);
PGXP_value& prtVal = g_state.pgxp_gpr[rt(instr)];
Validate(&prtVal, rtVal);
double x = g_state.pgxp_gpr[rt(instr)].x, y = f16Unsign(g_state.pgxp_gpr[rt(instr)].y);
double x = prtVal.x;
double y = f16Unsign(prtVal.y);
psx_value iX;
iX.d = rtVal;
@ -1514,11 +1515,11 @@ void CPU::PGXP::CPU_SRL(u32 instr, u32 rtVal)
x = f16Sign(x);
y = f16Sign(y);
PGXP_value ret = g_state.pgxp_gpr[rt(instr)];
ret.x = (float)x;
ret.y = (float)y;
ret.value = rdVal;
g_state.pgxp_gpr[rd(instr)] = ret;
PGXP_value& prdVal = g_state.pgxp_gpr[rd(instr)];
prdVal = prtVal;
prdVal.x = static_cast<float>(x);
prdVal.y = static_cast<float>(y);
prdVal.value = rdVal;
}
void CPU::PGXP::CPU_SRA(u32 instr, u32 rtVal)
@ -1528,10 +1529,11 @@ void CPU::PGXP::CPU_SRA(u32 instr, u32 rtVal)
// Rd = Rt >> Sa
const u32 rdVal = static_cast<u32>(static_cast<s32>(rtVal) >> sa(instr));
const u32 sh = sa(instr);
Validate(&g_state.pgxp_gpr[rt(instr)], rtVal);
PGXP_value ret = g_state.pgxp_gpr[rt(instr)];
PGXP_value& prtVal = g_state.pgxp_gpr[rt(instr)];
Validate(&prtVal, rtVal);
double x = g_state.pgxp_gpr[rt(instr)].x, y = g_state.pgxp_gpr[rt(instr)].y;
double x = prtVal.x;
double y = prtVal.y;
psx_value iX;
iX.d = rtVal;
@ -1578,21 +1580,21 @@ void CPU::PGXP::CPU_SRA(u32 instr, u32 rtVal)
x = f16Sign(x);
y = f16Sign(y);
ret.x = (float)x;
ret.y = (float)y;
PGXP_value& prdVal = g_state.pgxp_gpr[rd(instr)];
prdVal = prtVal;
prdVal.x = static_cast<float>(x);
prdVal.y = static_cast<float>(y);
prdVal.value = rdVal;
// Use low precision/rounded values when we're not shifting an entire component,
// and it's not originally from a 3D value. Too many false positives in P2/etc.
// What we probably should do is not set the valid flag on non-3D values to begin
// with, only letting them become valid when used in another expression.
if (!(ret.flags & VALID_Z) && sh < 16)
if (!(prdVal.flags & VALID_Z) && sh < 16)
{
ret.flags = 0;
MakeValid(&ret, rdVal);
prdVal.flags = 0;
MakeValid(&prdVal, rdVal);
}
ret.value = rdVal;
g_state.pgxp_gpr[rd(instr)] = ret;
}
////////////////////////////////////
@ -1605,11 +1607,13 @@ void CPU::PGXP::CPU_SLLV(u32 instr, u32 rtVal, u32 rsVal)
// Rd = Rt << Rs
const u32 rdVal = rtVal << rsVal;
const u32 sh = rsVal & 0x1F;
Validate(&g_state.pgxp_gpr[rt(instr)], rtVal);
Validate(&g_state.pgxp_gpr[rs(instr)], rsVal);
PGXP_value& prtVal = g_state.pgxp_gpr[rt(instr)];
PGXP_value& prsVal = g_state.pgxp_gpr[rs(instr)];
Validate(&prtVal, rtVal);
Validate(&prsVal, rsVal);
double x = f16Unsign(g_state.pgxp_gpr[rt(instr)].x);
double y = f16Unsign(g_state.pgxp_gpr[rt(instr)].y);
double x = f16Unsign(prtVal.x);
double y = f16Unsign(prtVal.y);
if (sh >= 32)
{
x = 0.f;
@ -1635,11 +1639,11 @@ void CPU::PGXP::CPU_SLLV(u32 instr, u32 rtVal, u32 rsVal)
y = f16Sign(y);
}
PGXP_value ret = g_state.pgxp_gpr[rt(instr)];
ret.x = (float)x;
ret.y = (float)y;
ret.value = rdVal;
g_state.pgxp_gpr[rd(instr)] = ret;
PGXP_value& prdVal = g_state.pgxp_gpr[rd(instr)];
prdVal = prtVal;
prdVal.x = static_cast<float>(x);
prdVal.y = static_cast<float>(y);
prdVal.value = rdVal;
}
void CPU::PGXP::CPU_SRLV(u32 instr, u32 rtVal, u32 rsVal)
@ -1649,10 +1653,13 @@ void CPU::PGXP::CPU_SRLV(u32 instr, u32 rtVal, u32 rsVal)
// Rd = Rt >> Sa
const u32 rdVal = rtVal >> rsVal;
const u32 sh = rsVal & 0x1F;
Validate(&g_state.pgxp_gpr[rt(instr)], rtVal);
Validate(&g_state.pgxp_gpr[rs(instr)], rsVal);
PGXP_value& prtVal = g_state.pgxp_gpr[rt(instr)];
PGXP_value& prsVal = g_state.pgxp_gpr[rs(instr)];
Validate(&prtVal, rtVal);
Validate(&prsVal, rsVal);
double x = g_state.pgxp_gpr[rt(instr)].x, y = f16Unsign(g_state.pgxp_gpr[rt(instr)].y);
double x = prtVal.x;
double y = f16Unsign(prtVal.y);
psx_value iX;
iX.d = rtVal;
@ -1696,14 +1703,12 @@ void CPU::PGXP::CPU_SRLV(u32 instr, u32 rtVal, u32 rsVal)
else
y = y / (1 << sh);
x = f16Sign(x);
y = f16Sign(y);
PGXP_value ret = g_state.pgxp_gpr[rt(instr)];
ret.x = (float)x;
ret.y = (float)y;
ret.value = rdVal;
g_state.pgxp_gpr[rd(instr)] = ret;
PGXP_value& prdVal = g_state.pgxp_gpr[rd(instr)];
prdVal = prtVal;
prdVal.x = static_cast<float>(f16Sign(x));
prdVal.y = static_cast<float>(f16Sign(y));
prdVal.value = rdVal;
}
void CPU::PGXP::CPU_SRAV(u32 instr, u32 rtVal, u32 rsVal)
@ -1713,10 +1718,13 @@ void CPU::PGXP::CPU_SRAV(u32 instr, u32 rtVal, u32 rsVal)
// Rd = Rt >> Sa
const u32 rdVal = static_cast<u32>(static_cast<s32>(rtVal) >> rsVal);
const u32 sh = rsVal & 0x1F;
Validate(&g_state.pgxp_gpr[rt(instr)], rtVal);
Validate(&g_state.pgxp_gpr[rs(instr)], rsVal);
PGXP_value& prtVal = g_state.pgxp_gpr[rt(instr)];
PGXP_value& prsVal = g_state.pgxp_gpr[rs(instr)];
Validate(&prtVal, rtVal);
Validate(&prsVal, rsVal);
double x = g_state.pgxp_gpr[rt(instr)].x, y = g_state.pgxp_gpr[rt(instr)].y;
double x = prtVal.x;
double y = prtVal.y;
psx_value iX;
iX.d = rtVal;
@ -1760,13 +1768,11 @@ void CPU::PGXP::CPU_SRAV(u32 instr, u32 rtVal, u32 rsVal)
else
y = y / (1 << sh);
PGXP_value ret = g_state.pgxp_gpr[rt(instr)];
x = f16Sign(x);
y = f16Sign(y);
ret.x = (float)x;
ret.y = (float)y;
ret.value = rdVal;
g_state.pgxp_gpr[rd(instr)] = ret;
PGXP_value& prdVal = g_state.pgxp_gpr[rd(instr)];
prdVal = prtVal;
prdVal.x = static_cast<float>(f16Sign(x));
prdVal.y = static_cast<float>(f16Sign(y));
prdVal.value = rdVal;
}
void CPU::PGXP::CPU_MFC0(u32 instr, u32 rdVal)