------- Comment #1 from hutchinsonandy at aim dot com 2008-06-06 03:08 -------
rev 132971 appears to have created this problem.
Revision: 132971
Author: bonzini
Date: 8:30:10 AM, Thursday, March 06, 2008
Message:
2008-03-06 Paolo Bonzini <[EMAIL PROTECTED]>
* simplify-rtx.c (simplify_subreg): Remove useless shifts from
word-extractions out of a multi-word object.
----
Modified : /trunk/gcc/ChangeLog
Modified : /trunk/gcc/simplify-rtx.c
It fails because subreg simplification tries to extract byte 3 of the HImode
int 'a' at simplify-rtx 5271. No check is performed here to see if shift count
>= length. For this case simplification should give sign of value (-1 or 0).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36447
