[Bug middle-end/45229] gcc.c-torture/execute/20000412-4.c ICEs with -fgraphite-identity

["howarth at nitro dot med dot uc dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #1 from howarth at nitro dot med dot uc dot edu  2010-08-07 23:41 -------
Another apparent example of the same ICE is since in...

FAIL: gfortran.dg/bounds_check_strlen_8.f90  -O2  (internal compiler error)

which fails as...

gfortran bounds_check_strlen_8.f90 -O2 -fbounds-check -fgraphite-identity -m32
-o ./bounds_check_strlen_8.exe
bounds_check_strlen_8.f90: In function ?s1?:
bounds_check_strlen_8.f90:26:0: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

and backtraces as...


gdb /sw/lib/gcc4.6/libexec/gcc/x86_64-apple-darwin10.4.0/4.6.0/f951
GNU gdb 6.3.50-20050815 (Apple version gdb-1469) (Wed May  5 04:36:56 UTC 2010)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin"...Reading symbols for shared
libraries ............. done

(gdb) r bounds_check_strlen_8.f90 -fPIC -quiet -dumpbase
bounds_check_strlen_8.f90 -mmacosx-version-min=10.6.4 -m32 -mtune=generic
-auxbase bounds_check_strlen_8 -O2 -version -fbounds-check -fgraphite-identity
-fintrinsic-modules-path
/sw/lib/gcc4.6/lib/gcc/x86_64-apple-darwin10.4.0/4.6.0/finclude -o
bounds_check_strlen_8.s
Starting program:
/sw/lib/gcc4.6/libexec/gcc/x86_64-apple-darwin10.4.0/4.6.0/f951
bounds_check_strlen_8.f90 -fPIC -quiet -dumpbase bounds_check_strlen_8.f90
-mmacosx-version-min=10.6.4 -m32 -mtune=generic -auxbase bounds_check_strlen_8
-O2 -version -fbounds-check -fgraphite-identity -fintrinsic-modules-path
/sw/lib/gcc4.6/lib/gcc/x86_64-apple-darwin10.4.0/4.6.0/finclude -o
bounds_check_strlen_8.s
Reading symbols for shared libraries .++++++++++++..... done
GNU Fortran (GCC) version 4.6.0 20100807 (experimental)
(x86_64-apple-darwin10.4.0)
        compiled by GNU C version 4.6.0 20100807 (experimental), GMP version
4.3.2, MPFR version 2.4.2-p3, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU Fortran (GCC) version 4.6.0 20100807 (experimental)
(x86_64-apple-darwin10.4.0)
        compiled by GNU C version 4.6.0 20100807 (experimental), GMP version
4.3.2, MPFR version 2.4.2-p3, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000000
is_gimple_reg (t=0x0) at ../../gcc-4.6-20100807/gcc/gimple.c:2861
2861      if (TREE_CODE (t) == SSA_NAME)
(gdb) bt
#0  is_gimple_reg (t=0x0) at ../../gcc-4.6-20100807/gcc/gimple.c:2861
#1  0x000000010050c489 in rewrite_cross_bb_scalar_deps_out_of_ssa (scop=<value
temporarily unavailable, due to optimizations>) at
../../gcc-4.6-20100807/gcc/graphite-sese-to-poly.c:2468
#2  0x00000001004e4ce5 in graphite_transform_loops () at
../../gcc-4.6-20100807/gcc/graphite.c:291
#3  0x00000001007908ba in graphite_transforms () at
../../gcc-4.6-20100807/gcc/tree-ssa-loop.c:296
#4  0x00000001005d1e26 in execute_one_pass (pass=0x100cde360) at
../../gcc-4.6-20100807/gcc/passes.c:1567
#5  0x00000001005d20fd in execute_pass_list (pass=0x100cde360) at
../../gcc-4.6-20100807/gcc/passes.c:1622
#6  0x00000001005d210f in execute_pass_list (pass=0x100cde3c0) at
../../gcc-4.6-20100807/gcc/passes.c:1623
#7  0x00000001005d210f in execute_pass_list (pass=0x100cde660) at
../../gcc-4.6-20100807/gcc/passes.c:1623
#8  0x00000001005d210f in execute_pass_list (pass=0x100cdd800) at
../../gcc-4.6-20100807/gcc/passes.c:1623
#9  0x00000001006fe89c in tree_rest_of_compilation (fndecl=0x141ef3600) at
../../gcc-4.6-20100807/gcc/tree-optimize.c:452
#10 0x00000001008d109d in cgraph_expand_function (node=0x141ef7158) at
../../gcc-4.6-20100807/gcc/cgraphunit.c:1643
#11 0x00000001008d434a in cgraph_optimize () at
../../gcc-4.6-20100807/gcc/cgraphunit.c:1722
#12 0x00000001008d49da in cgraph_finalize_compilation_unit () at
../../gcc-4.6-20100807/gcc/cgraphunit.c:1185
#13 0x000000010055f7c6 in write_global_declarations () at
../../gcc-4.6-20100807/gcc/langhooks.c:310
#14 0x0000000100690afe in toplev_main (argc=19, argv=0x7fff5fbfee80) at
../../gcc-4.6-20100807/gcc/toplev.c:983
#15 0x00000001000017c4 in start ()


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45229