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microVU: 

- Small Optimization...

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@1353 96395faa-99c1-11dd-bbfe-3dabce05a288
This commit is contained in:
cottonvibes 2009-06-10 04:18:06 +00:00
parent 8fc8d76f00
commit a7f2130595
2 changed files with 48 additions and 10 deletions
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41
pcsx2/x86/microVU_Flags.inl
View File

@ -62,11 +62,16 @@ int findFlagInst(int* fFlag, int cycles) {
}
// Setup Last 4 instances of Status/Mac/Clip flags (needed for accurate block linking)
void sortFlag(int* fFlag, int* bFlag, int cycles) {
int sortFlag(int* fFlag, int* bFlag, int cycles) {
int lFlag = -5;
int x = 0;
for (int i = 0; i < 4; i++) {
bFlag[i] = findFlagInst(fFlag, cycles);
if (lFlag != bFlag[i]) { x++; }
lFlag = bFlag[i];
cycles++;
}
return x; // Returns the number of Valid Flag Instances
}
#define sFlagCond ((sFLAG.doFlag && !mVUsFlagHack) || mVUlow.isFSSET || mVUinfo.doDivFlag)
@ -151,6 +156,9 @@ microVUt(int) mVUsetFlags(mV, int* xStatus, int* xMac, int* xClip) {
}
#define getFlagReg1(x) ((x == 3) ? gprF3 : ((x == 2) ? gprF2 : ((x == 1) ? gprF1 : gprF0)))
#define getFlagReg2(x) ((bStatus[0] == x) ? getFlagReg1(x) : gprT1)
#define getFlagReg3(x) ((gFlag == x) ? gprT1 : getFlagReg1(x))
#define getFlagReg4(x) ((gFlag == x) ? gprT1 : gprT2)
#define shuffleMac ((bMac [3]<<6)|(bMac [2]<<4)|(bMac [1]<<2)|bMac [0])
#define shuffleClip ((bClip[3]<<6)|(bClip[2]<<4)|(bClip[1]<<2)|bClip[0])
@ -159,7 +167,35 @@ microVUt(void) mVUsetupFlags(mV, int* xStatus, int* xMac, int* xClip, int cycles
if (__Status) {
int bStatus[4];
sortFlag(xStatus, bStatus, cycles);
int sortRegs = sortFlag(xStatus, bStatus, cycles);
// DevCon::Status("sortRegs = %d", params sortRegs);
// Note: Emitter will optimize out mov(reg1, reg1) cases...
// There 'is' still room for small optimizations but the
// sorting algorithm would be really complex and not really
// a noticeable improvement... (Most common cases are 1 & 2)
if (sortRegs == 1) {
MOV32RtoR(gprF0, getFlagReg1(bStatus[0]));
MOV32RtoR(gprF1, getFlagReg1(bStatus[1]));
MOV32RtoR(gprF2, getFlagReg1(bStatus[2]));
MOV32RtoR(gprF3, getFlagReg1(bStatus[3]));
}
else if (sortRegs == 2) {
MOV32RtoR(gprT1, getFlagReg1(bStatus[3]));
MOV32RtoR(gprF0, getFlagReg1(bStatus[0]));
MOV32RtoR(gprF1, getFlagReg2(bStatus[1]));
MOV32RtoR(gprF2, getFlagReg2(bStatus[2]));
MOV32RtoR(gprF3, gprT1);
}
else if (sortRegs == 3) {
int gFlag = (bStatus[0] == bStatus[1]) ? bStatus[2] : bStatus[1];
MOV32RtoR(gprT1, getFlagReg1(gFlag));
MOV32RtoR(gprT2, getFlagReg1(bStatus[3]));
MOV32RtoR(gprF0, getFlagReg1(bStatus[0]));
MOV32RtoR(gprF1, getFlagReg3(bStatus[1]));
MOV32RtoR(gprF2, getFlagReg4(bStatus[2]));
MOV32RtoR(gprF3, gprT2);
}
else {
MOV32RtoR(gprT1, getFlagReg1(bStatus[0]));
MOV32RtoR(gprT2, getFlagReg1(bStatus[1]));
MOV32RtoR(gprR, getFlagReg1(bStatus[2]));
@ -169,6 +205,7 @@ microVUt(void) mVUsetupFlags(mV, int* xStatus, int* xMac, int* xClip, int cycles
MOV32RtoR(gprF2, gprR);
MOV32ItoR(gprR, Roffset); // Restore gprR
}
}
if (__Mac) {
int bMac[4];

1
pcsx2/x86/microVU_Misc.h
View File

@ -66,6 +66,7 @@ declareAllVariables
//------------------------------------------------------------------
// Helper Macros
//------------------------------------------------------------------
#define _Ft_ ((mVU->code >> 16) & 0x1F) // The ft part of the instruction register
#define _Fs_ ((mVU->code >> 11) & 0x1F) // The fs part of the instruction register
#define _Fd_ ((mVU->code >> 6) & 0x1F) // The fd part of the instruction register