add license comments

[cparser] / main.c

diff --git a/main.c b/main.c
index 172d522..84b2b5f 100644 (file)
--- a/main.c
+++ b/main.c
@@ -1,3 +1,22 @@
+/*
+ * This file is part of cparser.
+ * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
 #include <config.h>
 
 #define _GNU_SOURCE
@@ -342,6 +361,7 @@ int main(int argc, char **argv)
        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);
@@ -365,6 +385,43 @@ int main(int argc, char **argv)
 
 #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) {
@@ -374,10 +431,16 @@ int main(int argc, char **argv)
                        const char *option = &arg[1];
                        if(option[0] == 'o') {
                                GET_ARG_AFTER(outname, "-o");
+                       } else if(option[0] == 'g') {
+                               firm_be_option("stabs=yes");
+                               firm_be_option("omitfp=no");
+                               firm_be_option("ia32-nooptcc=yes");
                        } else if(SINGLE_OPTION('c')) {
                                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");
@@ -460,9 +523,7 @@ int main(int argc, char **argv)
                                }
                        } 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(strncmp(option, "std=", 4) == 0) {
                                fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
                        } else if (option[0] == '-') {
                                /* double dash option */