[Bug target/51122] New: ICE in change_address_1, at emit-rtl.c:2001

[Bug target/51122] New: ICE in change_address_1, at emit-rtl.c:2001

[Greta.Yorsh at arm dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51122

             Bug #: 51122
           Summary: ICE in change_address_1, at emit-rtl.c:2001
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: Greta.Yorsh@arm.com
                CC: ramana.radhakrishnan@arm.com
            Target: arm-none-eabi


Created attachment 25818
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25818
reduced test case

ICE during IRA. 

Possibly related to a latent/unresolved bug reported here:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48256

cc1 -mfloat-abi=softfp -mfpu=neon -marm -quiet  -mcpu=cortex-a9 -O2
smith_crash_246671435.reduced.i  

csmith_crash_246671435.reduced.i: In function 'func_86':
csmith_crash_246671435.reduced.i:39:1: internal compiler error: in
change_address_1, at emit-rtl.c:2001

Backtrace:

#0  fancy_abort (file=0x12e85c8
"/work/local-checkouts/main/gcc-fsf/gcc/emit-rtl.c", line=2001,
function=0x12e9530 "change_address_1") at
/work/local-checkouts/main/gcc-fsf/gcc/diagnostic.c:899
#1  0x0000000000733903 in change_address_1 (memref=0x7ffff76320f0, mode=HImode,
addr=0x7ffff7632510, validate=1) at
/work/local-checkouts/main/gcc-fsf/gcc/emit-rtl.c:2001
#2  0x00000000007345a5 in adjust_address_1 (memref=0x7ffff76320f0, mode=HImode,
offset=0, validate=1, adjust=1) at
/work/local-checkouts/main/gcc-fsf/gcc/emit-rtl.c:2101
#3  0x0000000000796903 in alter_subreg (xp=0x7ffff76324c0) at
/work/local-checkouts/main/gcc-fsf/gcc/final.c:2885
#4  0x0000000000796623 in cleanup_subreg_operands (insn=0x7ffff762c630) at
/work/local-checkouts/main/gcc-fsf/gcc/final.c:2832
#5  0x0000000000a72077 in reload (first=0x7ffff75b8880, global=1) at
/work/local-checkouts/main/gcc-fsf/gcc/reload1.c:1247
#6  0x000000000096e4f5 in ira (f=0x0) at
/work/local-checkouts/main/gcc-fsf/gcc/ira.c:3726
#7  0x000000000096e691 in rest_of_handle_ira () at
/work/local-checkouts/main/gcc-fsf/gcc/ira.c:3799
#8  0x0000000000a1360c in execute_one_pass (pass=0x1887e60) at
/work/local-checkouts/main/gcc-fsf/gcc/passes.c:2064
#9  0x0000000000a137fa in execute_pass_list (pass=0x1887e60) at
/work/local-checkouts/main/gcc-fsf/gcc/passes.c:2119
#10 0x0000000000a1381b in execute_pass_list (pass=0x18884a0) at
/work/local-checkouts/main/gcc-fsf/gcc/passes.c:2120
#11 0x0000000000bae1ef in tree_rest_of_compilation (fndecl=0x7ffff7589900) at
/work/local-checkouts/main/gcc-fsf/gcc/tree-optimize.c:420
#12 0x0000000000691a67 in cgraph_expand_function (node=0x7ffff75afb40) at
/work/local-checkouts/main/gcc-fsf/gcc/cgraphunit.c:1804
#13 0x0000000000691c32 in cgraph_expand_all_functions () at
/work/local-checkouts/main/gcc-fsf/gcc/cgraphunit.c:1871
#14 0x0000000000692547 in cgraph_optimize () at
/work/local-checkouts/main/gcc-fsf/gcc/cgraphunit.c:2168
#15 0x000000000068f750 in cgraph_finalize_compilation_unit () at
/work/local-checkouts/main/gcc-fsf/gcc/cgraphunit.c:1312
#16 0x00000000004cae22 in c_write_global_declarations () at
/work/local-checkouts/main/gcc-fsf/gcc/c-decl.c:9940
#17 0x0000000000b0a47e in compile_file () at
/work/local-checkouts/main/gcc-fsf/gcc/toplev.c:581
#18 0x0000000000b0c644 in do_compile () at
/work/local-checkouts/main/gcc-fsf/gcc/toplev.c:1930
#19 0x0000000000b0c7bb in toplev_main (argc=8, argv=0x7fffffffe308) at
/work/local-checkouts/main/gcc-fsf/gcc/toplev.c:2006
#20 0x00000000005c48b4 in main (argc=8, argv=0x7fffffffe308) at
/work/local-checkouts/main/gcc-fsf/gcc/main.c:36

GCC trunk r181174 (Nov 8, 2011)
Reproducible on arm-eabi target with gcc revision from October.

Configured with: configure --target=arm-eabi --enable-checking=release
--disable-gdbtk --disable-werror --disable-tui --disable-rda --disable-sid
--disable-utils --disable-lto --with-cpu=cortex-a9 --with-float=softfp
--with-fpu=neon --disable-lto --disable-werror --disable-shared --disable-nls
--disable-threads --disable-tls --enable-checking=yes --with-newlib

I am attaching a reduce test case. 
By the way, the original test case was generated by csmith compiler-testing
tool: http://embed.cs.utah.edu/csmith/

[Bug target/51122] ICE in change_address_1, at emit-rtl.c:2001

[ramana at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51122

Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ramana at gcc dot gnu.org

--- Comment #1 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> 2011-11-14 17:57:55 UTC ---
Confirmed - 

Not sure if this is a dup or not of PR48256 but it smells similar. 

Ramana

[Bug target/51122] ICE in change_address_1, at emit-rtl.c:2001

[ramana at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51122

Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011-11-14
     Ever Confirmed|0                           |1

[Bug target/51122] ICE in change_address_1, at emit-rtl.c:2001

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51122

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |5.0

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed for GCC 5+ (Maybe even for GCC 4.9). LRA is always enabled in GCC 5+
(r5-6635-gc896d4b449d797)