const char *outname = NULL;
const char *dumpfunction = NULL;
compile_mode_t mode = CompileAssembleLink;
+ int opt_level = 1;
obstack_init(&cppflags_obst);
obstack_init(&ldflags_obst);
#define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
+ /* early options parsing (find out optimisation level) */
+ for(int i = 1; i < argc; ++i) {
+ const char *arg = argv[i];
+ if(arg[0] != '-')
+ continue;
+
+ const char *option = &arg[1];
+ if(option[0] == 'O') {
+ sscanf(&option[1], "%d", &opt_level);
+ }
+ }
+
+ /* apply optimisation level */
+ switch(opt_level) {
+ case 0:
+ firm_option("no-opt");
+ break;
+ case 1:
+ firm_option("no-inline");
+ break;
+ default:
+ case 4:
+ firm_option("strict-aliasing");
+ /* fallthrough */
+ case 3:
+ firm_option("cond-eval");
+ firm_option("if-conv");
+ /* fallthrough */
+ case 2:
+ firm_option("inline");
+ firm_option("no-strength-red");
+ firm_option("deconv");
+ firm_be_option("omitfp");
+ break;
+ }
+
+ /* parse rest of options */
bool help_displayed = false;
bool argument_errors = false;
for(int i = 1; i < argc; ++i) {
mode = CompileAssemble;
} else if(SINGLE_OPTION('S')) {
mode = Compile;
+ } else if(option[0] == 'O') {
+ continue;
} else if(option[0] == 'I') {
const char *opt;
GET_ARG_AFTER(opt, "-I");
}
} else if(strcmp(option, "pedantic") == 0) {
fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
- } else if(option[0] == 'O' ||
- option[0] == 'g' ||
- strncmp(option, "std=", 4) == 0) {
+ } else if(option[0] == 'g' || strncmp(option, "std=", 4) == 0) {
fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
} else if (option[0] == '-') {
/* double dash option */