[Bug target/61360] [5 Regression] ICE: in lra_update_insn_recog_data, at lra.c:1363 with -mtune=bdver4

["trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61360

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|4.10.0                      |5.0

--- Comment #10 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to GGanesh from comment #9)
> Patch that fixes this issue has been submitted 
> https://gcc.gnu.org/ml/gcc-patches/2014-08/msg02179.html
> 
> The idea is to prohibit changes to the "enabled" attribute during lra and
> reload pass.

I've tested your patch, but unfortunately gcc still ICEs (during Firefox
LTO build with -march=native on ancient Phenom II X4):

/var/tmp/mozilla-central/dom/mathml/nsMathMLElement.h: In member function
‘GetClientTop’:
/var/tmp/mozilla-central/dom/mathml/nsMathMLElement.h:42:0: internal compiler
error: in lra_update_insn_recog_data, at lra.c:1221
   NS_FORWARD_NSIDOMELEMENT_TO_GENERIC
 ^
0x8136bc lra_update_insn_recog_data(rtx_insn*)
        ../../gcc/gcc/lra.c:1220
0x82a705 eliminate_regs_in_insn
        ../../gcc/gcc/lra-eliminations.c:1077
0x82a705 process_insn_for_elimination
        ../../gcc/gcc/lra-eliminations.c:1344
0x82a705 lra_eliminate(bool, bool)
        ../../gcc/gcc/lra-eliminations.c:1408
0x8247b0 lra_constraints(bool)
        ../../gcc/gcc/lra-constraints.c:4040
0x815001 lra(_IO_FILE*)
        ../../gcc/gcc/lra.c:2193
0x7d3406 do_reload
        ../../gcc/gcc/ira.c:5310
0x7d3406 execute
        ../../gcc/gcc/ira.c:5469
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
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Subject: [Bug ada/62117] [4.9 regression] wrong code for passing small array argument'Address, in generic
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idb117

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |ebotcazou at gcc dot gnu.org
         Resolution|---                         |INVALID

--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
The memcmp function as declared is not pure since it reads local memory.  Pure
functions are only allowed to read their arguments in Ada.