[Bug c/39375] asm with a "=X" output overwrites the output

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2009-03-05 10:42 -------
You need to use a "memory" clobber instead.  "=X" (params[1]) says to GCC
that the asm operand 0 should be stored to params[1], which it does
(it allocates %eax to it).  Note that plain use of %eax and %dx is a
bad idea as well, instead you should use proper inputs and outputs with
register constraints.


-- 

rguenth at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39375