[Bug tree-optimization/45340] __builtin_expect and -Os generates stupid code

[pinskia at gcc dot gnu dot org]

------- Comment #6 from pinskia at gcc dot gnu dot org  2010-08-25 11:24 -------
Change:
__asm__ volatile ("":::"memory");
To:
__asm__ volatile ("#clobber mem":::"memory");

And you will see there is an instruction which GCC thinks is there.

Again this has nothing to do with __builtin_expect except for the different
choices in basic block reordering that is happening.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45340