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Interpreter: deduplicate integer comparisons

This commit is contained in:
Tillmann Karras 2021-06-06 07:14:29 +01:00
parent 8f9bb5612a
commit 5fc3cb2379
2 changed files with 24 additions and 52 deletions
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2
Source/Core/Core/PowerPC/Interpreter/Interpreter.h
View File

@ -291,6 +291,8 @@ private:
// flag helper
static void Helper_UpdateCR0(u32 value);
template <typename T>
static void Helper_IntCompare(UGeckoInstruction inst, T a, T b);
static void Helper_FloatCompareOrdered(UGeckoInstruction inst, double a, double b);
static void Helper_FloatCompareUnordered(UGeckoInstruction inst, double a, double b);

74
Source/Core/Core/PowerPC/Interpreter/Interpreter_Integer.cpp
View File

@ -66,42 +66,36 @@ void Interpreter::andis_rc(UGeckoInstruction inst)
Helper_UpdateCR0(rGPR[inst.RA]);
}
template <typename T>
void Interpreter::Helper_IntCompare(UGeckoInstruction inst, T a, T b)
{
u32 cr_field;
if (a < b)
cr_field = PowerPC::CR_LT;
else if (a > b)
cr_field = PowerPC::CR_GT;
else
cr_field = PowerPC::CR_EQ;
if (PowerPC::GetXER_SO())
cr_field |= PowerPC::CR_SO;
PowerPC::ppcState.cr.SetField(inst.CRFD, cr_field);
}
void Interpreter::cmpi(UGeckoInstruction inst)
{
const s32 a = static_cast<s32>(rGPR[inst.RA]);
const s32 b = inst.SIMM_16;
u32 f;
if (a < b)
f = 0x8;
else if (a > b)
f = 0x4;
else
f = 0x2; // equals
if (PowerPC::GetXER_SO())
f |= 0x1;
PowerPC::ppcState.cr.SetField(inst.CRFD, f);
Helper_IntCompare(inst, a, b);
}
void Interpreter::cmpli(UGeckoInstruction inst)
{
const u32 a = rGPR[inst.RA];
const u32 b = inst.UIMM;
u32 f;
if (a < b)
f = 0x8;
else if (a > b)
f = 0x4;
else
f = 0x2; // equals
if (PowerPC::GetXER_SO())
f |= 0x1;
PowerPC::ppcState.cr.SetField(inst.CRFD, f);
Helper_IntCompare(inst, a, b);
}
void Interpreter::mulli(UGeckoInstruction inst)
@ -200,38 +194,14 @@ void Interpreter::cmp(UGeckoInstruction inst)
{
const s32 a = static_cast<s32>(rGPR[inst.RA]);
const s32 b = static_cast<s32>(rGPR[inst.RB]);
u32 temp;
if (a < b)
temp = 0x8;
else if (a > b)
temp = 0x4;
else // Equals
temp = 0x2;
if (PowerPC::GetXER_SO())
temp |= 0x1;
PowerPC::ppcState.cr.SetField(inst.CRFD, temp);
Helper_IntCompare(inst, a, b);
}
void Interpreter::cmpl(UGeckoInstruction inst)
{
const u32 a = rGPR[inst.RA];
const u32 b = rGPR[inst.RB];
u32 temp;
if (a < b)
temp = 0x8;
else if (a > b)
temp = 0x4;
else // Equals
temp = 0x2;
if (PowerPC::GetXER_SO())
temp |= 0x1;
PowerPC::ppcState.cr.SetField(inst.CRFD, temp);
Helper_IntCompare(inst, a, b);
}
void Interpreter::cntlzwx(UGeckoInstruction inst)