http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51014
Bug #: 51014
Summary: [4.7 Regression] ICE: in apply_opt_in_copies, at
loop-unroll.c:2283 with -O2 -g -funroll-loops
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: zso...@seznam.cz
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 25743
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25743
reduced testcase
Compiler output:
$ gcc -O2 -g -funroll-loops testcase.C
testcase.C: In function 'void foo(int)':
testcase.C:20:1: internal compiler error: in apply_opt_in_copies, at
loop-unroll.c:2283
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
(gdb) bt
#0 fancy_abort (file=0x1419378 "/mnt/svn/gcc-trunk/gcc/loop-unroll.c",
line=2283, function=0x1419c90 "apply_opt_in_copies")
at /mnt/svn/gcc-trunk/gcc/diagnostic.c:898
#1 0x0000000000a19220 in apply_opt_in_copies (opt_info=0x1bcbf30, n_copies=7,
unrolling=true, rewrite_original_loop=true)
at /mnt/svn/gcc-trunk/gcc/loop-unroll.c:2282
#2 0x0000000000a1b07d in unroll_loop_runtime_iterations (flags=-177191872) at
/mnt/svn/gcc-trunk/gcc/loop-unroll.c:1139
#3 unroll_and_peel_loops (flags=-177191872) at
/mnt/svn/gcc-trunk/gcc/loop-unroll.c:187
#4 0x0000000000a0aa97 in rtl_unroll_and_peel_loops () at
/mnt/svn/gcc-trunk/gcc/loop-init.c:329
#5 0x0000000000a5dfd8 in execute_one_pass (pass=0x196f640) at
/mnt/svn/gcc-trunk/gcc/passes.c:2064
#6 0x0000000000a5e345 in execute_pass_list (pass=0x196f640) at
/mnt/svn/gcc-trunk/gcc/passes.c:2119
#7 0x0000000000a5e357 in execute_pass_list (pass=0x196f820) at
/mnt/svn/gcc-trunk/gcc/passes.c:2120
#8 0x0000000000a5e357 in execute_pass_list (pass=0x196fc00) at
/mnt/svn/gcc-trunk/gcc/passes.c:2120
#9 0x0000000000bb334e in tree_rest_of_compilation (fndecl=0x7ffff56ebe00) at
/mnt/svn/gcc-trunk/gcc/tree-optimize.c:420
#10 0x0000000000816f8a in cgraph_expand_function (node=0x7ffff5587c60) at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1819
#11 0x0000000000818f0c in cgraph_expand_all_functions () at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1886
#12 cgraph_optimize () at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:2197
#13 0x000000000081940a in cgraph_finalize_compilation_unit () at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1327
#14 0x000000000064022b in cp_write_global_declarations () at
/mnt/svn/gcc-trunk/gcc/cp/decl2.c:4046
#15 0x0000000000b521f4 in compile_file (argc=16, argv=0x7fffffffdab8) at
/mnt/svn/gcc-trunk/gcc/toplev.c:581
#16 do_compile (argc=16, argv=0x7fffffffdab8) at
/mnt/svn/gcc-trunk/gcc/toplev.c:1930
#17 toplev_main (argc=16, argv=0x7fffffffdab8) at
/mnt/svn/gcc-trunk/gcc/toplev.c:2006
#18 0x00007ffff6178d2d in __libc_start_main () from /lib64/libc.so.6
#19 0x0000000000569a99 in _start ()
Tested revisions:
r181102 - crash
r181026 - crash
r180540 - OK
