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Speed up FPURegCache::Start() on x86.

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This cuts that func by 97% when running the automated tests, and it was 8%
of the total time.  Won't really affect games.
This commit is contained in:
Unknown W. Brackets 2013-10-24 08:23:33 -07:00
parent 6c5a2ea91a
commit e8091dce44
2 changed files with 21 additions and 6 deletions
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22
Core/MIPS/x86/RegCacheFPU.cpp
View file

@ -23,7 +23,7 @@
u32 FPURegCache::tempValues[NUM_TEMPS]; u32 FPURegCache::tempValues[NUM_TEMPS];
FPURegCache::FPURegCache() : mips(0), emit(0) { FPURegCache::FPURegCache() : mips(0), initialReady(false), emit(0) {
memset(regs, 0, sizeof(regs)); memset(regs, 0, sizeof(regs));
memset(xregs, 0, sizeof(xregs)); memset(xregs, 0, sizeof(xregs));
vregs = regs + 32; vregs = regs + 32;
@ -31,21 +31,31 @@ FPURegCache::FPURegCache() : mips(0), emit(0) {
void FPURegCache::Start(MIPSState *mips, MIPSAnalyst::AnalysisResults &stats) { void FPURegCache::Start(MIPSState *mips, MIPSAnalyst::AnalysisResults &stats) {
this->mips = mips; this->mips = mips;
if (!initialReady)
SetupInitialRegs();
memcpy(xregs, xregsInitial, sizeof(xregs));
memcpy(regs, regsInitial, sizeof(regs));
}
void FPURegCache::SetupInitialRegs() {
for (int i = 0; i < NUM_X_FPREGS; i++) { for (int i = 0; i < NUM_X_FPREGS; i++) {
xregs[i].mipsReg = -1; xregsInitial[i].mipsReg = -1;
xregs[i].dirty = false; xregsInitial[i].dirty = false;
} }
memset(regs, 0, sizeof(regs)); memset(regsInitial, 0, sizeof(regsInitial));
OpArg base = GetDefaultLocation(0); OpArg base = GetDefaultLocation(0);
for (int i = 0; i < 32; i++) { for (int i = 0; i < 32; i++) {
regs[i].location = base; regsInitial[i].location = base;
base.IncreaseOffset(sizeof(float)); base.IncreaseOffset(sizeof(float));
} }
base = GetDefaultLocation(32); base = GetDefaultLocation(32);
for (int i = 32; i < NUM_MIPS_FPRS; i++) { for (int i = 32; i < NUM_MIPS_FPRS; i++) {
regs[i].location = base; regsInitial[i].location = base;
base.IncreaseOffset(sizeof(float)); base.IncreaseOffset(sizeof(float));
} }
initialReady = true;
} }
void FPURegCache::SpillLock(int p1, int p2, int p3, int p4) { void FPURegCache::SpillLock(int p1, int p2, int p3, int p4) {

5
Core/MIPS/x86/RegCacheFPU.h
View file

@ -155,11 +155,16 @@ public:
X64Reg GetFreeXReg(); X64Reg GetFreeXReg();
private: private:
const int *GetAllocationOrder(int &count); const int *GetAllocationOrder(int &count);
void SetupInitialRegs();
MIPSCachedFPReg regs[NUM_MIPS_FPRS]; MIPSCachedFPReg regs[NUM_MIPS_FPRS];
X64CachedFPReg xregs[NUM_X_FPREGS]; X64CachedFPReg xregs[NUM_X_FPREGS];
MIPSCachedFPReg *vregs; MIPSCachedFPReg *vregs;
bool initialReady;
MIPSCachedFPReg regsInitial[NUM_MIPS_FPRS];
X64CachedFPReg xregsInitial[NUM_X_FPREGS];
// TEMP0, etc. are swapped in here if necessary (e.g. on x86.) // TEMP0, etc. are swapped in here if necessary (e.g. on x86.)
static u32 tempValues[NUM_TEMPS]; static u32 tempValues[NUM_TEMPS];