stage2 大量优化代码使其自举编译时间大幅缩短

stage0/spl_cli.c

@@ -33,6 +33,7 @@ typedef struct {
     int profile;
     int profile_interval;
     const char *profile_out;
+    int stats;
     const char *entry;
     const char *path;  /* file.sir */
     const char **args; /* spl 程序参数（file.sir 之后） */
@@ -48,6 +49,7 @@ static void usage(void) {
                     "  --trace           print every instruction\n"
                     "  --profile[=N]     native sampling profiler (every N insns, default 10000)\n"
                     "  --profile-out <p> profile output prefix (default build/profile)\n"
+                    "  --stats           print executed instructions / call count at exit\n"
                     "  -h, --help        show help\n");
 }
 
@@ -72,6 +74,8 @@ static int parse_args(int argc, const char **argv, cli_opts_t *o) {
                 o->trace = 1;
             } else if (strcmp(a, "--disasm") == 0) {
                 o->disasm = 1;
+            } else if (strcmp(a, "--stats") == 0) {
+                o->stats = 1;
             } else if (strcmp(a, "--profile") == 0) {
                 o->profile = 1;
             } else if (strncmp(a, "--profile=", 10) == 0) {
@@ -656,6 +660,8 @@ int main(int argc, const char **argv) {
     if (o.debug) {
         fprintf(stderr, "spl_cli: debug mode on\n");
         spl_vm_set_debug(&vm, 1);
+    } else {
+        spl_vm_set_debug(&vm, 0);
     }
     if (o.trace) {
         fprintf(stderr, "spl_cli: trace mode on\n");
@@ -710,6 +716,11 @@ int main(int argc, const char **argv) {
             fprintf(stderr, "spl_cli: hit breakpoint (run with -g to debug)\n");
     }
 
+    if (o.stats) {
+        fprintf(stderr, "spl_cli: stats steps=%llu calls=%llu\n", (unsigned long long)vm.steps,
+                (unsigned long long)vm.ncalls);
+    }
+
     if (o.profile) {
         const char *prefix = o.profile_out ? o.profile_out : "build/profile";
         char folded[1024];