[Bug rtl-optimization/61446] [4.10 Regression]: ICE in copyprop_hardreg_forward_1, at regcprop.c with -O2 -m32 -march=corei7

["ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61446

--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Dominique d'Humieres from comment #1)
> This breaks bootstrap on x86_64-apple-darwin13 and other targets (see
> https://gcc.gnu.org/ml/gcc-regression/2014-06/). On darwin the failure is

Yes, known problem. Please use following patch to disable REE pass for now:

Index: common/config/i386/i386-common.c
===================================================================
--- common/config/i386/i386-common.c    (revision 211321)
+++ common/config/i386/i386-common.c    (working copy)
@@ -866,7 +866,7 @@
 static const struct default_options ix86_option_optimization_table[] =
   {
     /* Enable redundant extension instructions removal at -O2 and higher.  */
-    { OPT_LEVELS_2_PLUS, OPT_free, NULL, 1 },
+    { OPT_LEVELS_2_PLUS, OPT_free, NULL, 0 },
     /* Enable function splitting at -O2 and higher.  */
     { OPT_LEVELS_2_PLUS, OPT_freorder_blocks_and_partition, NULL, 1 },
     /* Turn off -fschedule-insns by default.  It tends to make the
>From gcc-bugs-return-453482-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jun 08 12:25:37 2014
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/61434] [4.10 Regression] wrong code at -O3 on x86_64-linux
Date: Sun, 08 Jun 2014 12:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ida434

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-06-08
                 CC|                            |jakub at gcc dot gnu.org,
                   |                            |kyukhin at gcc dot gnu.org
   Target Milestone|---                         |4.10.0
            Summary|wrong code at -O3 on        |[4.10 Regression] wrong
                   |x86_64-linux                |code at -O3 on x86_64-linux
     Ever confirmed|0                           |1

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r209972.