[Bug tree-optimization/18219] [4.3/4.4 Regression] bloats code by 31%

[steven at gcc dot gnu dot org]

------- Comment #30 from steven at gcc dot gnu dot org  2010-01-03 22:57 -------
With the following compiler:
$ ./xgcc --version
xgcc (GCC) 4.5.0 20091228 (experimental) [trunk revision 155486]
Copyright (C) 2009 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


I get the following size with -m32 for the test case of comment #0:
$ ./xgcc -B. -c t.c -m32 -Os -fno-ivopts -o tOsi.o
$ ./xgcc -B. -c t.c -m32 -Os -o tOs.o
$ size tOs*
   text    data     bss     dec     hex filename
     45       0       0      45      2d tOsi.o
     42       0       0      42      2a tOs.o
$ 


And I get the following size with -m64:
$ ./xgcc -B. -c t.c -Os -o tOs.o
$ ./xgcc -B. -c t.c -Os -fno-ivopts -o tOsi.o
$ size tOs*
   text    data     bss     dec     hex filename
     78       0       0      78      4e tOsi.o
     89       0       0      89      59 tOs.o
$ 


This is, therefore, fixed on the trunk for GCC 4.5.


-- 

steven at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.5.0
            Summary|[4.3/4.4/4.5 Regression]    |[4.3/4.4 Regression] bloats
                   |bloats code by 31%          |code by 31%


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18219