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drc: timing hacks
[pcsx_rearmed.git]
/
libpcsxcore
/
new_dynarec
/
new_dynarec.c
diff --git
a/libpcsxcore/new_dynarec/new_dynarec.c
b/libpcsxcore/new_dynarec/new_dynarec.c
index
bab5ec8
..
21c9669
100644
(file)
--- a/
libpcsxcore/new_dynarec/new_dynarec.c
+++ b/
libpcsxcore/new_dynarec/new_dynarec.c
@@
-279,6
+279,8
@@
int tracedebug=0;
//#define DEBUG_CYCLE_COUNT 1
//#define DEBUG_CYCLE_COUNT 1
+#define NO_CYCLE_PENALTY_THR 12
+
int cycle_multiplier; // 100 for 1.0
static int CLOCK_ADJUST(int x)
int cycle_multiplier; // 100 for 1.0
static int CLOCK_ADJUST(int x)
@@
-4981,6
+4983,7
@@
void do_cc(int i,signed char i_regmap[],int *adj,int addr,int taken,int invert)
int count;
int jaddr;
int idle=0;
int count;
int jaddr;
int idle=0;
+ int t=0;
if(itype[i]==RJUMP)
{
*adj=0;
if(itype[i]==RJUMP)
{
*adj=0;
@@
-4988,7
+4991,7
@@
void do_cc(int i,signed char i_regmap[],int *adj,int addr,int taken,int invert)
//if(ba[i]>=start && ba[i]<(start+slen*4))
if(internal_branch(branch_regs[i].is32,ba[i]))
{
//if(ba[i]>=start && ba[i]<(start+slen*4))
if(internal_branch(branch_regs[i].is32,ba[i]))
{
-
int
t=(ba[i]-start)>>2;
+ t=(ba[i]-start)>>2;
if(is_ds[t]) *adj=-1; // Branch into delay slot adds an extra cycle
else *adj=ccadj[t];
}
if(is_ds[t]) *adj=-1; // Branch into delay slot adds an extra cycle
else *adj=ccadj[t];
}
@@
-5007,7
+5010,14
@@
void do_cc(int i,signed char i_regmap[],int *adj,int addr,int taken,int invert)
emit_jmp(0);
}
else if(*adj==0||invert) {
emit_jmp(0);
}
else if(*adj==0||invert) {
- emit_addimm_and_set_flags(CLOCK_ADJUST(count+2),HOST_CCREG);
+ int cycles=CLOCK_ADJUST(count+2);
+ // faster loop HACK
+ if (t&&*adj) {
+ int rel=t-i;
+ if(-NO_CYCLE_PENALTY_THR<rel&&rel<0)
+ cycles=CLOCK_ADJUST(*adj)+count+2-*adj;
+ }
+ emit_addimm_and_set_flags(cycles,HOST_CCREG);
jaddr=(int)out;
emit_jns(0);
}
jaddr=(int)out;
emit_jns(0);
}
@@
-9853,7
+9863,7
@@
int new_recompile_block(int addr)
// GTE runs in parallel until accessed, divide by 2 for a rough guess
cc+=gte_cycletab[source[i]&0x3f]/2;
}
// GTE runs in parallel until accessed, divide by 2 for a rough guess
cc+=gte_cycletab[source[i]&0x3f]/2;
}
- else if(/*itype[i]==LOAD||
*/itype[i]==STORE||itype[i]==C1LS) // load
causes weird timing issues
+ else if(/*itype[i]==LOAD||
itype[i]==STORE||*/itype[i]==C1LS) // load,store
causes weird timing issues
{
cc+=2; // 2 cycle penalty (after CLOCK_DIVIDER)
}
{
cc+=2; // 2 cycle penalty (after CLOCK_DIVIDER)
}