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add some code to gather stats on m68k registers used in translated blocks

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gbeauche 2004-11-20 23:35:16 +00:00
parent 01a1d4e8b2
commit a6bf2d0928
1 changed files with 63 additions and 0 deletions
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63
BasiliskII/src/uae_cpu/compiler/compemu_support.cpp
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@ -83,6 +83,10 @@
#define PROFILE_UNTRANSLATED_INSNS 1
#endif
#if defined(__x86_64__) && 0
#define RECORD_REGISTER_USAGE 1
#endif
#ifdef WIN32
#undef write_log
#define write_log dummy_write_log
@ -97,6 +101,18 @@ static void dummy_write_log(const char *, ...) { }
} while (0)
#endif
#if RECORD_REGISTER_USAGE
static uint64 reg_count[16];
static int reg_count_local[16];
static int reg_count_compare(const void *ap, const void *bp)
{
const int a = *((int *)ap);
const int b = *((int *)bp);
return reg_count[b] - reg_count[a];
}
#endif
#if PROFILE_COMPILE_TIME
#include <time.h>
static uae_u32 compile_count = 0;
@ -1667,11 +1683,29 @@ static __inline__ void remove_all_offsets(void)
remove_offset(i,-1);
}
static inline void flush_reg_count(void)
{
#if RECORD_REGISTER_USAGE
for (int r = 0; r < 16; r++)
if (reg_count_local[r])
ADDQim(reg_count_local[r], ((uintptr)reg_count) + (8 * r), X86_NOREG, X86_NOREG, 1);
#endif
}
static inline void record_register(int r)
{
#if RECORD_REGISTER_USAGE
if (r < 16)
reg_count_local[r]++;
#endif
}
static __inline__ int readreg_general(int r, int size, int spec, int can_offset)
{
int n;
int answer=-1;
record_register(r);
if (live.state[r].status==UNDEF) {
write_log("WARNING: Unexpected read of undefined register %d\n",r);
}
@ -1748,6 +1782,7 @@ static __inline__ int writereg_general(int r, int size, int spec)
int n;
int answer=-1;
record_register(r);
if (size<4) {
remove_offset(r,spec);
}
@ -1829,6 +1864,7 @@ static __inline__ int rmw_general(int r, int wsize, int rsize, int spec)
int n;
int answer=-1;
record_register(r);
if (live.state[r].status==UNDEF) {
write_log("WARNING: Unexpected read of undefined register %d\n",r);
}
@ -5046,6 +5082,25 @@ void compiler_exit(void)
write_log("%03d: %04x %10lu %s\n", i, opcode_nums[i], count, lookup->name);
}
#endif
#if RECORD_REGISTER_USAGE
int reg_count_ids[16];
uint64 tot_reg_count = 0;
for (int i = 0; i < 16; i++) {
reg_count_ids[i] = i;
tot_reg_count += reg_count[i];
}
qsort(reg_count_ids, 16, sizeof(int), reg_count_compare);
uint64 cum_reg_count = 0;
for (int i = 0; i < 16; i++) {
int r = reg_count_ids[i];
cum_reg_count += reg_count[r];
printf("%c%d : %16ld %2.1f%% [%2.1f]\n", r < 8 ? 'D' : 'A', r % 8,
reg_count[r],
100.0*double(reg_count[r])/double(tot_reg_count),
100.0*double(cum_reg_count)/double(tot_reg_count));
}
#endif
}
bool compiler_use_jit(void)
@ -5076,6 +5131,11 @@ void init_comp(void)
uae_s8* cw=can_word;
uae_s8* au=always_used;
#if RECORD_REGISTER_USAGE
for (i=0;i<16;i++)
reg_count_local[i] = 0;
#endif
for (i=0;i<VREGS;i++) {
live.state[i].realreg=-1;
live.state[i].needflush=NF_SCRATCH;
@ -6792,6 +6852,7 @@ static void compile_block(cpu_history* pc_hist, int blocklen)
tba=(uae_u32*)get_target();
emit_long(get_handler(t1)-((uintptr)tba+4));
raw_mov_l_mi((uintptr)&regs.pc_p,t1);
flush_reg_count();
raw_jmp((uintptr)popall_do_nothing);
create_jmpdep(bi,0,tba,t1);
@ -6808,6 +6869,7 @@ static void compile_block(cpu_history* pc_hist, int blocklen)
tba=(uae_u32*)get_target();
emit_long(get_handler(t2)-((uintptr)tba+4));
raw_mov_l_mi((uintptr)&regs.pc_p,t2);
flush_reg_count();
raw_jmp((uintptr)popall_do_nothing);
create_jmpdep(bi,1,tba,t2);
}
@ -6816,6 +6878,7 @@ static void compile_block(cpu_history* pc_hist, int blocklen)
if (was_comp) {
flush(1);
}
flush_reg_count();
/* Let's find out where next_handler is... */
if (was_comp && isinreg(PC_P)) {