http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56275
Uros Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-02-10
Component|other |rtl-optimization
Known to work| |4.7.3, 4.8.0
Target Milestone|--- |4.6.4
Ever Confirmed|0 |1
--- Comment #1 from Uros Bizjak <ubizjak at gmail dot com> 2013-02-10 14:55:03
UTC ---
Confirmed, latent on 4.7+.
I'm testing following patch:
--cut here--
Index: simplify-rtx.c
===================================================================
--- simplify-rtx.c (revision 195496)
+++ simplify-rtx.c (working copy)
@@ -188,7 +188,8 @@
/* If we're accessing the constant in a different mode than it was
originally stored, attempt to fix that up via subreg simplifications.
If that fails we have no choice but to return the original memory.
*/
- if (offset != 0 || cmode != GET_MODE (x))
+ if ((offset != 0 || cmode != GET_MODE (x))
+ && offset < GET_MODE_SIZE (cmode))
{
rtx tem = simplify_subreg (GET_MODE (x), c, cmode, offset);
if (tem && CONSTANT_P (tem))
--cut here--
