------- Comment #2 from jakub at gcc dot gnu dot org 2009-02-02 10:06 -------
I think the bug is in check_asm_operands/asm_operand_ok.
The latter has:
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
/* For best results, our caller should have given us the
proper matching constraint, but we can't actually fail
the check if they didn't. Indicate that results are
inconclusive. */
but the former only handles the simple case:
if (c[0] == '%')
c++;
if (ISDIGIT ((unsigned char) c[0]) && c[1] == '\0')
c = constraints[c[0] - '0'];
Together this allows combine to combine something that definitely shouldn't be
combined.
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |jakub at gcc dot gnu dot org
|dot org |
Status|UNCONFIRMED |ASSIGNED
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2009-02-02 10:06:53
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39058
