https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64707
Bug ID: 64707
Summary: FAIL: libgomp.c/target-9.c with
-ftree-parallelize-loops=0
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgomp
Assignee: unassigned at gcc dot gnu.org
Reporter: vries at gcc dot gnu.org
CC: jakub at gcc dot gnu.org
When running libgomp testsuite with
--target_board=unix/-ftree-parallelize-loops=0, we run into this failure:
...
FAIL: libgomp.c/target-9.c (internal compiler error)
FAIL: libgomp.c/target-9.c (test for excess errors)
UNRESOLVED: libgomp.c/target-9.c compilation failed to produce executable
...
More specifically:
...
lto1: internal compiler error: in streamer_get_builtin_tree, at
tree-streamer-in.c:1151^M
0xfea939 streamer_get_builtin_tree(lto_input_block*, data_in*)^M
/home/vries/gcc_versions/devel/master/src/gcc/tree-streamer-in.c:1151^M
0xb579f3 lto_input_tree_1(lto_input_block*, data_in*, LTO_tags, unsigned int)^M
/home/vries/gcc_versions/devel/master/src/gcc/lto-streamer-in.c:1320^M
0xb577ba lto_input_scc(lto_input_block*, data_in*, unsigned int*, unsigned
int*)^M
/home/vries/gcc_versions/devel/master/src/gcc/lto-streamer-in.c:1248^M
0x6a8238 lto_read_decls^M
/home/vries/gcc_versions/devel/master/src/gcc/lto/lto.c:1900^M
0x6a8efa lto_file_finalize^M
/home/vries/gcc_versions/devel/master/src/gcc/lto/lto.c:2229^M
0x6a8f47 lto_create_files_from_ids^M
/home/vries/gcc_versions/devel/master/src/gcc/lto/lto.c:2239^M
0x6a906e lto_file_read^M
/home/vries/gcc_versions/devel/master/src/gcc/lto/lto.c:2280^M
0x6ac807 read_cgraph_and_symbols^M
/home/vries/gcc_versions/devel/master/src/gcc/lto/lto.c:2981^M
0x6ad803 lto_main()^M
/home/vries/gcc_versions/devel/master/src/gcc/lto/lto.c:3436^M
Please submit a full bug report,^M
...
Investigating the ICE site:
...
(gdb)
#5 0x0000000000fea93a in streamer_get_builtin_tree (ib=0x7fffffffd860,
data_in=0x2ea2390)
at /home/vries/gcc_versions/devel/master/src/gcc/tree-streamer-in.c:1151
1151 gcc_assert (result);
(gdb) l
1146 {
1147 fcode = (enum built_in_function) (fcode - BEGIN_CHKP_BUILTINS -
1);
1148 result = builtin_decl_explicit (fcode);
1149 result = chkp_maybe_clone_builtin_fndecl (result);
1150 }
1151 gcc_assert (result);
1152 }
1153 else if (fclass == BUILT_IN_MD)
1154 {
1155 result = targetm.builtin_decl (fcode, true);
(gdb) p fcode
$1 = BUILT_IN_GOMP_TARGET
(gdb) p builtin_info
builtin_info builtin_info_type
(gdb) p builtin_info.decl[BUILT_IN_GOMP_TARGET]
$3 = (tree_node *) 0x0
...
The omp builtin is not enabled in lto1 (consistent with the observation in PR
64672 comment 9).
