diff options
Diffstat (limited to 'i386-asm.c')
| -rw-r--r-- | i386-asm.c | 40 |
1 files changed, 40 insertions, 0 deletions
@@ -504,6 +504,45 @@ static inline int asm_modrm(int reg, Operand *op) return 0; } +static void maybe_print_stats (void) +{ + static int already = 1; + if (!already) + /* print stats about opcodes */ + { + const struct ASMInstr *pa; + int freq[4]; + int op_vals[500]; + int nb_op_vals, i, j; + + already = 1; + nb_op_vals = 0; + memset(freq, 0, sizeof(freq)); + for(pa = asm_instrs; pa->sym != 0; pa++) { + freq[pa->nb_ops]++; + //for(i=0;i<pa->nb_ops;i++) { + for(j=0;j<nb_op_vals;j++) { + //if (pa->op_type[i] == op_vals[j]) + if (pa->instr_type == op_vals[j]) + goto found; + } + //op_vals[nb_op_vals++] = pa->op_type[i]; + op_vals[nb_op_vals++] = pa->instr_type; + found: ; + //} + } + for(i=0;i<nb_op_vals;i++) { + int v = op_vals[i]; + //if ((v & (v - 1)) != 0) + printf("%3d: %08x\n", i, v); + } + printf("size=%d nb=%d f0=%d f1=%d f2=%d f3=%d\n", + (int)sizeof(asm_instrs), + (int)sizeof(asm_instrs) / (int)sizeof(ASMInstr), + freq[0], freq[1], freq[2], freq[3]); + } +} + ST_FUNC void asm_opcode(TCCState *s1, int opcode) { const ASMInstr *pa; @@ -515,6 +554,7 @@ ST_FUNC void asm_opcode(TCCState *s1, int opcode) int autosize; int p66; + maybe_print_stats(); /* force synthetic ';' after prefix instruction, so we can handle */ /* one-line things like "rep stosb" instead of only "rep\nstosb" */ if (opcode >= TOK_ASM_wait && opcode <= TOK_ASM_repnz) |