[Bug tree-optimization/58006] [4.8/4.9 Regression] ICE compiling VegaStrike with -ffast-math -ftree-parallelize-loops=2

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58006

Marc Glisse <glisse at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW
            Summary|ICE regression compiling    |[4.8/4.9 Regression] ICE
                   |VegaStrike on f19 with      |compiling VegaStrike with
                   |-ffast-math and             |-ffast-math
                   |-ftree-parallelize-loops=2  |-ftree-parallelize-loops=2

--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
Confirmed with just -Ofast -ftree-parallelize-loops=2.

#0  __strlen_sse2_pminub () at
../sysdeps/x86_64/multiarch/strlen-sse2-pminub.S:38
#1  0x0000000000cf064b in get_identifier (text=0x0) at
/data/repos/gcc/trunk/gcc/stringpool.c:111
#2  0x0000000000d96f46 in make_temp_ssa_name (type=0x7ffff5fb12a0, stmt=0x0,
name=0x0)
    at /data/repos/gcc/trunk/gcc/tree-flow-inline.h:1222
#3  0x0000000000d97ee1 in take_address_of (obj=0x7ffff1449f50,
type=0x7ffff5fb12a0, entry=0x7ffff0ddad58, decl_address=..., 
    gsi=0x7fffffffd4b0) at /data/repos/gcc/trunk/gcc/tree-parloops.c:499
#4  0x0000000000d9841e in eliminate_local_variables_1 (tp=0x7ffff1840450,
walk_subtrees=0x7fffffffd2b8, data=0x7fffffffd3e0)
    at /data/repos/gcc/trunk/gcc/tree-parloops.c:613
#5  0x0000000000f6f75e in walk_tree_1 (tp=0x7ffff1840450, func=0xd982f3
<eliminate_local_variables_1(tree*, int*, void*)>, 
    data=0x7fffffffd3e0, pset=0x0, lh=0x0) at
/data/repos/gcc/trunk/gcc/tree.c:10916
#6  0x0000000000a9b35d in walk_gimple_op (stmt=0x7ffff1840410,
callback_op=0xd982f3 <eliminate_local_variables_1(tree*, int*, void*)>, 
    wi=0x7fffffffd3e0) at /data/repos/gcc/trunk/gcc/gimple.c:1428
#7  0x0000000000d98727 in eliminate_local_variables_stmt (entry=0x7ffff0ddad58,
gsi=0x7fffffffd4b0, decl_address=...)
    at /data/repos/gcc/trunk/gcc/tree-parloops.c:700
#8  0x0000000000d98881 in eliminate_local_variables (entry=0x7ffff0ddad58,
exit=0x7ffff1b40a80)
    at /data/repos/gcc/trunk/gcc/tree-parloops.c:743
#9  0x0000000000d9c358 in gen_parallel_loop (loop=0x7ffff0d4bea0,
reduction_list=..., n_threads=2, niter=0x7fffffffd5f0)
    at /data/repos/gcc/trunk/gcc/tree-parloops.c:1864
#10 0x0000000000d9d393 in parallelize_loops () at
/data/repos/gcc/trunk/gcc/tree-parloops.c:2218