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common.opt (fvar-tracking-uninit): Document.

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* common.opt (fvar-tracking-uninit): Document.
	* toplev.c (process_options): Fix handling of flag_var_tracking_uninit.
	* config/darwin.c (darwin_override_options): Likewise.

From-SVN: r193456
This commit is contained in:
Eric Botcazou 2012-11-12 22:59:37 +00:00 • committed by Eric Botcazou
parent aea9bbebd1
commit 1267ca30d1
4 changed files with 16 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2012-11-12 Eric Botcazou <ebotcazou@adacore.com>
* common.opt (fvar-tracking-uninit): Document.
* toplev.c (process_options): Fix handling of flag_var_tracking_uninit.
* config/darwin.c (darwin_override_options): Likewise.
2012-11-12 Steven Bosscher <steven@gcc.gnu.org>
* sched-vis.c (print_pattern): Handle NULL patterns.

4
gcc/common.opt
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@ -2193,6 +2193,10 @@ fvar-tracking-assignments-toggle
Common Report Var(flag_var_tracking_assignments_toggle) Optimization
Toggle -fvar-tracking-assignments
; Positive if we should track uninitialized variables, negative if
; we should run the var-tracking pass only to discard debug
; annotations. When flag_var_tracking_uninit == AUTODETECT_VALUE it
; will be set according to flag_var_tracking.
fvar-tracking-uninit
Common Report Var(flag_var_tracking_uninit) Optimization
Perform variable tracking and also tag variables that are uninitialized

4
gcc/config/darwin.c
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@ -3038,12 +3038,12 @@ darwin_override_options (void)
darwin_emit_branch_islands = true;
}
if (flag_var_tracking
if (flag_var_tracking_uninit == 0
&& generating_for_darwin_version >= 9
&& (flag_gtoggle ? (debug_info_level == DINFO_LEVEL_NONE)
: (debug_info_level >= DINFO_LEVEL_NORMAL))
&& write_symbols == DWARF2_DEBUG)
flag_var_tracking_uninit = 1;
flag_var_tracking_uninit = flag_var_tracking;
if (MACHO_DYNAMIC_NO_PIC_P)
{

5
gcc/toplev.c
View file

@ -1421,12 +1421,15 @@ process_options (void)
/* If the user specifically requested variable tracking with tagging
uninitialized variables, we need to turn on variable tracking.
(We already determined above that variable tracking is feasible.) */
if (flag_var_tracking_uninit)
if (flag_var_tracking_uninit == 1)
flag_var_tracking = 1;
if (flag_var_tracking == AUTODETECT_VALUE)
flag_var_tracking = optimize >= 1;
if (flag_var_tracking_uninit == AUTODETECT_VALUE)
flag_var_tracking_uninit = flag_var_tracking;
if (flag_var_tracking_assignments == AUTODETECT_VALUE)
flag_var_tracking_assignments = flag_var_tracking
&& !(flag_selective_scheduling || flag_selective_scheduling2);