From 06e0753fce99d4b845c054ce343f49149522ff2c Mon Sep 17 00:00:00 2001
From: seyko <seyko2@gmail.com>
Date: Tue, 12 May 2015 21:32:32 +0300
Subject: [PATCH] minor pp optimizations

    * remove free_defines() from tcc_preprocess()
        all cleanup will be done in tcc_delete
    * move a preprocessor file closing to tcc_delete too
---
 libtcc.c |  4 ++++
 tcc.c    | 26 +++++++++-----------------
 tccpp.c  |  3 ---
 3 files changed, 13 insertions(+), 20 deletions(-)

diff --git a/libtcc.c b/libtcc.c
index d21beb4..1266baf 100644
--- a/libtcc.c
+++ b/libtcc.c
@@ -1217,6 +1217,10 @@ LIBTCCAPI void tcc_delete(TCCState *s1)
 
     tcc_cleanup();
 
+    /* close a preprocessor output */
+    if (s1->ppfp && s1->ppfp != stdout)
+        fclose(s1->ppfp);
+
     /* free all sections */
     for(i = 1; i < s1->nb_sections; i++)
         free_section(s1->sections[i]);
diff --git a/tcc.c b/tcc.c
index e499100..6e94f45 100644
--- a/tcc.c
+++ b/tcc.c
@@ -247,7 +247,6 @@ int main(int argc, char **argv)
     TCCState *s;
     int ret, optind, i, bench;
     int64_t start_time = 0;
-    const char *first_file = NULL;
 
     s = tcc_new();
 
@@ -286,7 +285,7 @@ int main(int argc, char **argv)
             tcc_error("cannot specify multiple files with -c and -o");
         }
     }
-    
+
     if (s->output_type == TCC_OUTPUT_PREPROCESS) {
         if (!s->outfile) {
             s->ppfp = stdout;
@@ -315,17 +314,16 @@ int main(int argc, char **argv)
         } else {
             if (1 == s->verbose)
                 printf("-> %s\n", filename);
+            if (!s->outfile)
+                s->outfile = default_outputfile(s, filename);
             if (tcc_add_file(s, filename, filetype) < 0)
                 ret = 1;
             else
             if (s->output_type == TCC_OUTPUT_OBJ) {
-                if (!s->outfile)
-                    s->outfile = default_outputfile(s, filename);
                 ret = !!tcc_output_file(s, s->outfile);
+                if (s->gen_deps && !ret)
+                    gen_makedeps(s, s->outfile, s->deps_outfile);
                 if (!ret) {
-                    /* dump collected dependencies */
-                    if (s->gen_deps)
-                        gen_makedeps(s, s->outfile, s->deps_outfile);
                     if ((i+1) < s->nb_files) {
                         tcc_delete(s);
                         s = tcc_new();
@@ -337,9 +335,6 @@ int main(int argc, char **argv)
                     }
                 }
             }
-            else
-            if (!first_file)
-                first_file = filename;
         }
     }
 
@@ -354,14 +349,11 @@ int main(int argc, char **argv)
             tcc_error_noabort("-run is not available in a cross compiler");
             ret = 1;
 #endif
-        } else if (s->output_type == TCC_OUTPUT_PREPROCESS) {
-             if (s->outfile)
-                fclose(s->ppfp);
-        } else if (s->output_type != TCC_OUTPUT_OBJ) {
-            if (!s->outfile)
-                s->outfile = default_outputfile(s, first_file);
+        } else
+        if (s->output_type == TCC_OUTPUT_EXE ||
+            s->output_type == TCC_OUTPUT_DLL)
+        {
             ret = !!tcc_output_file(s, s->outfile);
-            /* dump collected dependencies */
             if (s->gen_deps && !ret)
                 gen_makedeps(s, s->outfile, s->deps_outfile);
         }
diff --git a/tccpp.c b/tccpp.c
index c71edf3..ac251c3 100644
--- a/tccpp.c
+++ b/tccpp.c
@@ -3332,12 +3332,10 @@ static void pp_line(TCCState *s1, BufferedFile *f, int level)
 /* Preprocess the current file */
 ST_FUNC int tcc_preprocess(TCCState *s1)
 {
-    Sym *define_start;
     BufferedFile **iptr;
     int token_seen, spcs, level;
 
     preprocess_init(s1);
-    define_start = define_stack;
     ch = file->buf_ptr[0];
     tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
     parse_flags = PARSE_FLAG_PREPROCESS
@@ -3388,6 +3386,5 @@ ST_FUNC int tcc_preprocess(TCCState *s1)
         fputs(get_tok_str(tok, &tokc), s1->ppfp);
     }
 
-    free_defines(define_start);
     return 0;
 }