Very cheap and quite effective since tail return is common.
Please test.
Should apply to all archs, but then arch-depenendent size
of jump instruction needs #defining.
Index: tcc.c
===================================================================
RCS file: /cvsroot/tinycc/tinycc/tcc.c,v
retrieving revision 1.179
diff -u -b -B -w -p -r1.179 tcc.c
--- tcc.c 3 Sep 2005 22:51:34 -0000 1.179
+++ tcc.c 3 Oct 2005 14:23:58 -0000
@@ -8926,6 +8926,13 @@ static void gen_function(Sym *sym)
gfunc_prolog(&sym->type);
rsym = 0;
block(NULL, NULL, NULL, NULL, 0, 0);
+#ifdef TCC_TARGET_I386
+ if (rsym == ind - 4) {
+ /* kill the final jump to the epilog */
+ rsym = *(int*)(cur_text_section->data + rsym);
+ ind -= 5;
+ }
+#endif
gsym(rsym);
gfunc_epilog();
cur_text_section->data_offset = ind;
--
Zdenek Pavlas
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