[Bug target/53974] [4.8 Regression] Nearly all tests fail with ADA.CALENDAR.TIME_ERROR : a-calend.adb:603

["dave.anglin at bell dot net" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53974

--- Comment #4 from dave.anglin at bell dot net 2012-07-20 12:16:37 UTC ---
On 18-Jul-12, at 6:15 AM, ebotcazou at gcc dot gnu.org wrote:

> I have seen the same error on SPARC.  The fix is
>
>        * config/sparc/sparc.md (adddi3_insn_sp32): Add earlyclobber.
>
> so you might want to try something similar on line 4923 of pa.md.


I don't think there is an earlyclobber problem in the insn at 4923.

I reviewed pa.md for missing earlyclobbers and found a few.   Some
are likely not problems because of alternative ordering.  In any case,
fixing them didn't change the situation.

I presume the problem was introduced with this change:

2012-05-15  Hristian Kirtchev  <kirtchev@adacore.com>

         * a-calend.adb (Day_Of_Week): The routine once again treats

The Month value extracted by __gnat_split is wrong and it fails this
comparison:

    0x000105bc <+68>:    ldo -1(r21),r22
    0x000105c0 <+72>:    cmpib,<< b,r22,0x10618 <ada__calendar__split+160>

(gdb) p $r22
$15 = 12

Have to run,
Dave
--
John David Anglin    dave.anglin@bell.net