------- Comment #4 from hubicka at gcc dot gnu dot org 2010-09-17 13:13 -------
OK, the problem is that we stream two cgraph nodes. One for strlen function
and other for __bulitin_strlen. Decl of __bulitin_strlen have same asm name as
strlen:
(gdb) p debug_tree (node->decl)
<function_decl 0x7ffff7f40000 strlen
type <function_type 0x7ffff7f3db28
type <integer_type 0x7ffff7ed0690 long unsigned int public unsigned DI
size <integer_cst 0x7ffff7ebc7d0 constant 64>
unit size <integer_cst 0x7ffff7ebc7f8 constant 8>
align 64 symtab 0 alias set 4 canonical type 0x7ffff7ed0690
precision 64 min <integer_cst 0x7ffff7ebc820 0> max <integer_cst 0x7ffff7ebc7a8
18446744073709551615>>
QI
size <integer_cst 0x7ffff7ebc4d8 constant 8>
unit size <integer_cst 0x7ffff7ebc500 constant 1>
align 8 symtab 0 alias set -1 canonical type 0x7ffff7ee8888
attributes <tree_list 0x7ffff7f3ac58
purpose <identifier_node 0x7ffff7ecfc30 nonnull>>
arg-types <tree_list 0x7ffff7ee6640 value <pointer_type 0x7ffff7ee3dc8>
chain <tree_list 0x7ffff7ebceb0 value <void_type 0x7ffff7ed0e70
void>>>
pointer_to_this <pointer_type 0x7ffff5aebb28>>
addressable used nothrow public external built-in decl_2 decl_5 decl_6 QI
file <built-in> line 0 col 0
align 8 built-in BUILT_IN_NORMAL:BUILT_IN_STRLEN attributes <tree_list
0x7ffff7f3acf8> chain <function_decl 0x7ffff7f40100 __builtin_strncasecmp>>
$6 = void
(gdb) c
Continuing.
Breakpoint 1, lto_output_node (set=0x7ffff7f98c00, vset=0x7ffff7f98c20) at
../../gcc/lto-cgraph.c:416
416 boundary_p = !cgraph_node_in_set_p (node, set);
(gdb) c
Continuing.
Breakpoint 1, lto_output_node (set=0x7ffff7f98c00, vset=0x7ffff7f98c20) at
../../gcc/lto-cgraph.c:416
416 boundary_p = !cgraph_node_in_set_p (node, set);
(gdb) p debug_tree (node->decl)
<function_decl 0x7ffff7f3ef00 __builtin_strlen
type <function_type 0x7ffff7f3db28
type <integer_type 0x7ffff7ed0690 long unsigned int public unsigned DI
size <integer_cst 0x7ffff7ebc7d0 constant 64>
unit size <integer_cst 0x7ffff7ebc7f8 constant 8>
align 64 symtab 0 alias set 4 canonical type 0x7ffff7ed0690
precision 64 min <integer_cst 0x7ffff7ebc820 0> max <integer_cst 0x7ffff7ebc7a8
18446744073709551615>>
QI
size <integer_cst 0x7ffff7ebc4d8 constant 8>
unit size <integer_cst 0x7ffff7ebc500 constant 1>
align 8 symtab 0 alias set -1 canonical type 0x7ffff7ee8888
attributes <tree_list 0x7ffff7f3ac58
purpose <identifier_node 0x7ffff7ecfc30 nonnull>>
arg-types <tree_list 0x7ffff7ee6640 value <pointer_type 0x7ffff7ee3dc8>
chain <tree_list 0x7ffff7ebceb0 value <void_type 0x7ffff7ed0e70
void>>>
pointer_to_this <pointer_type 0x7ffff5aebb28>>
nothrow public external built-in decl_6 QI file <built-in> line 0 col 0
align 8 built-in BUILT_IN_NORMAL:BUILT_IN_STRLEN attributes <tree_list
0x7ffff7f3ac80> chain <function_decl 0x7ffff7f40000 strlen>>
and when reading back those two decls identify into single and thus also the
cgraph nodes.
Richi: is that intended behaviour?
--
hubicka at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenther at suse dot de
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44246
