http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50615
Bug #: 50615
Summary: [4.7 Regression] ICE: in distribute_notes, at
combine.c:13282 with -O --param max-cse-insns=1
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: zso...@seznam.cz
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 25415
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25415
reduced testcase
Compiler output:
$ gcc -O --param max-cse-insns=1 testcase.c
testcase.c: In function 'foo':
testcase.c:10:1: internal compiler error: in distribute_notes, at
combine.c:13282
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=0x14296f8 "/mnt/svn/gcc-trunk/gcc/combine.c", line=13282,
function=0x142b370 "distribute_notes")
at /mnt/svn/gcc-trunk/gcc/diagnostic.c:892
#1 0x000000000104a02c in distribute_notes (notes=Unhandled dwarf expression
opcode 0xf3
) at /mnt/svn/gcc-trunk/gcc/combine.c:13282
#2 0x0000000001074e98 in try_combine (i3=Unhandled dwarf expression opcode
0xf3
) at /mnt/svn/gcc-trunk/gcc/combine.c:4224
#3 0x000000000107f8a6 in combine_instructions () at
/mnt/svn/gcc-trunk/gcc/combine.c:1223
#4 rest_of_handle_combine () at /mnt/svn/gcc-trunk/gcc/combine.c:13890
#5 0x00000000008dc1f8 in execute_one_pass (pass=0x1774180) at
/mnt/svn/gcc-trunk/gcc/passes.c:2064
#6 0x00000000008dc565 in execute_pass_list (pass=0x1774180) at
/mnt/svn/gcc-trunk/gcc/passes.c:2119
#7 0x00000000008dc577 in execute_pass_list (pass=0x176f860) at
/mnt/svn/gcc-trunk/gcc/passes.c:2120
#8 0x0000000000a342fe in tree_rest_of_compilation (fndecl=0x7ffff5688a00) at
/mnt/svn/gcc-trunk/gcc/tree-optimize.c:420
#9 0x000000000068e526 in cgraph_expand_function (node=0x7ffff7ed16c0) at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1805
#10 0x000000000069046c in cgraph_expand_all_functions () at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1864
#11 cgraph_optimize () at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:2141
#12 0x000000000069085a in cgraph_finalize_compilation_unit () at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1312
#13 0x0000000000574073 in c_write_global_declarations () at
/mnt/svn/gcc-trunk/gcc/c-decl.c:9936
#14 0x00000000009d1dc4 in compile_file (argc=15, argv=0x7fffffffdad8) at
/mnt/svn/gcc-trunk/gcc/toplev.c:581
#15 do_compile (argc=15, argv=0x7fffffffdad8) at
/mnt/svn/gcc-trunk/gcc/toplev.c:1925
#16 toplev_main (argc=15, argv=0x7fffffffdad8) at
/mnt/svn/gcc-trunk/gcc/toplev.c:2001
#17 0x00007ffff6178d2d in __libc_start_main () from /lib64/libc.so.6
#18 0x0000000000557ad9 in _start ()
Tested revisions:
r179488 - crash
r179167 - crash
r178498 - OK
4.6 r177922 - OK
