[Bug regression/29248] Stack pointer is modified in functions that don't use the stack

["atgraham at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #3 from atgraham at gmail dot com  2006-09-27 04:28 -------
Ack!  Sorry--I had indicated the wrong target on that one.  The target is
vxworks, not linux.  My 4.1.1 powerpc-linux compiler *does* get this
optimization right.  So something in the vxworks-specific code is causing this:

/opt/vxppc/libexec/gcc/powerpc-wrs-vxworks/4.1.1> ./cc1 -m32 -Os ~/foo.c -o -
-quiet
        .file   "foo.c"
        .section        ".text"
        .align 2
        .globl foo
        .type   foo, @function
foo:
        stwu 1,-16(1)
        li 3,1
        addi 1,1,16
        blr
        .size   foo, .-foo
        .align 2
        .globl bar
        .type   bar, @function
bar:
        stwu 1,-16(1)
        addi 1,1,16
        blr
        .size   bar, .-bar
        .ident  "GCC: (GNU) 4.1.1"

In my opinion, this is a very low priority problem, despite that this is one of
my primary development environments.  Sorry for wasting your time with the
wrong target.


-- 

atgraham at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|middle-end                  |regression
 GCC target triplet|powerpc-linux               |powerpc-wrs-vxworks


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29248