[Bug bootstrap/72829] [7 Regression] ICE in extract_constrain_insn, at recog.c:2211 (error: insn does not satisfy its constraints) on 32-bit BE powerpc

["asolokha at gmx dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72829

Arseny Solokha <asolokha at gmx dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|https://gcc.gnu.org/bugzill |
                   |a/show_bug.cgi?id=69847     |

--- Comment #1 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to Arseny Solokha from comment #0)
> I believe this could be either a fallout after PR69847, or a result of
> turning LRA on by default.

The latter:

% powerpc-e500v2-linux-gnuspe-gcc-7.0.0-alpha20160731 -c -O2 -mlra -o tt tt.c 
tt.c: In function 'internal_strncpy':
tt.c:17:1: error: insn does not satisfy its constraints:
 }
 ^
(insn 101 97 118 7 (parallel [
            (set (reg:CC 75 7 [209])
                (compare:CC (reg/v:SI 4 4 [orig:194 n ] [194])
                    (const_int 0 [0])))
            (set (reg:SI 66 ctr [orig:208 n ] [208])
                (reg/v:SI 4 4 [orig:194 n ] [194]))
        ]) 453 {*movsi_internal2}
     (nil))
tt.c:17:1: internal compiler error: in extract_constrain_insn, at recog.c:2211