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re PR debug/77985 (DW_AT_comp_dir is omitted when filename is absolute and the file does not contain a specific typedef)

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2016-10-24  Ximin Luo  <infinity0@pwned.gg>

	PR debug/77985
	* dwarf2out.c (file_table_relative_p): Remove.
	(gen_compile_unit_die, dwarf2out_early_finish): Emit DW_AT_comp_dir
	also for absolute paths.
	* doc/tm.texi: Update.
	* doc/tm.texi.in (SDB and DWARF) <TARGET_FORCE_AT_COMP_DIR>: Remove.
	* target.def (force_at_comp_dir): Remove hook.
	* config/darwin.h (TARGET_FORCE_AT_COMP_DIR): Remove define.

From-SVN: r241473
This commit is contained in:
Ximin Luo 2016-10-24 12:57:27 +01:00 committed by Richard Biener
parent c101fad870
commit 89cc66c478
6 changed files with 13 additions and 39 deletions
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11
gcc/ChangeLog
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@ -1,3 +1,14 @@
2016-10-24 Ximin Luo <infinity0@pwned.gg>
PR debug/77985
* dwarf2out.c (file_table_relative_p): Remove.
(gen_compile_unit_die, dwarf2out_early_finish): Emit DW_AT_comp_dir
also for absolute paths.
* doc/tm.texi: Update.
* doc/tm.texi.in (SDB and DWARF) <TARGET_FORCE_AT_COMP_DIR>: Remove.
* target.def (force_at_comp_dir): Remove hook.
* config/darwin.h (TARGET_FORCE_AT_COMP_DIR): Remove define.
2016-10-24 Richard Biener <rguenther@suse.de>
* tree-vrp.c (evrp_dom_walker::before_dom_children): Ignore

2
gcc/config/darwin.h
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@ -424,8 +424,6 @@ extern GTY(()) int darwin_ms_struct;
#define TARGET_WANT_DEBUG_PUB_SECTIONS true
#define TARGET_FORCE_AT_COMP_DIR true
/* When generating stabs debugging, use N_BINCL entries. */
#define DBX_USE_BINCL

4
gcc/doc/tm.texi
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@ -9784,10 +9784,6 @@ tables, and hence is desirable if it works.
True if the @code{.debug_pubtypes} and @code{.debug_pubnames} sections should be emitted. These sections are not used on most platforms, and in particular GDB does not use them.
@end deftypevr
@deftypevr {Target Hook} bool TARGET_FORCE_AT_COMP_DIR
True if the @code{DW_AT_comp_dir} attribute should be emitted for each compilation unit. This attribute is required for the darwin linker to emit debug information.
@end deftypevr
@deftypevr {Target Hook} bool TARGET_DELAY_SCHED2
True if sched2 is not to be run at its normal place.
This usually means it will be run as part of machine-specific reorg.

2
gcc/doc/tm.texi.in
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@ -7084,8 +7084,6 @@ tables, and hence is desirable if it works.
@hook TARGET_WANT_DEBUG_PUB_SECTIONS
@hook TARGET_FORCE_AT_COMP_DIR
@hook TARGET_DELAY_SCHED2
@hook TARGET_DELAY_VARTRACK

26
gcc/dwarf2out.c
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@ -22005,7 +22005,7 @@ gen_compile_unit_die (const char *filename)
{
add_name_attribute (die, filename);
/* Don't add cwd for <built-in>. */
if (!IS_ABSOLUTE_PATH (filename) && filename[0] != '<')
if (filename[0] != '<')
add_comp_dir_attribute (die);
}
@ -26368,20 +26368,6 @@ prune_unused_types (void)
prune_unmark_dies (ctnode->root_die);
}
/* Set the parameter to true if there are any relative pathnames in
the file table. */
int
file_table_relative_p (dwarf_file_data **slot, bool *p)
{
struct dwarf_file_data *d = *slot;
if (!IS_ABSOLUTE_PATH (d->filename))
{
*p = true;
return 0;
}
return 1;
}
/* Helpers to manipulate hash table of comdat type units. */
struct comdat_type_hasher : nofree_ptr_hash <comdat_type_node>
@ -28195,15 +28181,7 @@ dwarf2out_early_finish (const char *filename)
/* Add the name for the main input file now. We delayed this from
dwarf2out_init to avoid complications with PCH. */
add_name_attribute (comp_unit_die (), remap_debug_filename (filename));
if (!IS_ABSOLUTE_PATH (filename) || targetm.force_at_comp_dir)
add_comp_dir_attribute (comp_unit_die ());
else if (get_AT (comp_unit_die (), DW_AT_comp_dir) == NULL)
{
bool p = false;
file_table->traverse<bool *, file_table_relative_p> (&p);
if (p)
add_comp_dir_attribute (comp_unit_die ());
}
add_comp_dir_attribute (comp_unit_die ());
/* With LTO early dwarf was really finished at compile-time, so make
sure to adjust the phase after annotating the LTRANS CU DIE. */

7
gcc/target.def
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@ -6056,13 +6056,6 @@ DEFHOOKPOD
in particular GDB does not use them.",
bool, false)
DEFHOOKPOD
(force_at_comp_dir,
"True if the @code{DW_AT_comp_dir} attribute should be emitted for each \
compilation unit. This attribute is required for the darwin linker \
to emit debug information.",
bool, false)
DEFHOOKPOD
(delay_sched2, "True if sched2 is not to be run at its normal place.\n\
This usually means it will be run as part of machine-specific reorg.",