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re PR bootstrap/50825 (bootstrap fails at stage1 libgcc from r180302)

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PR bootstrap/50825
	* sched-deps.c (add_dependence): If not doing predication, promote
	REG_DEP_CONTROL to REG_DEP_ANTI.

From-SVN: r180310
This commit is contained in:
Bernd Schmidt 2011-10-21 18:38:44 +00:00 • committed by Bernd Schmidt
parent fe66170d5b
commit f561ef0f49
2 changed files with 10 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2011-10-21 Bernd Schmidt <bernds@codesourcery.com>
PR bootstrap/50825
* sched-deps.c (add_dependence): If not doing predication, promote
REG_DEP_CONTROL to REG_DEP_ANTI.
2011-10-21 Georg-Johann Lay <avr@gjlay.de>
* config/avr/avr.h (LEGITIMIZE_RELOAD_ADDRESS): Pass address of X

4
gcc/sched-deps.c
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@ -1505,6 +1505,10 @@ sd_debug_lists (rtx insn, sd_list_types_def types)
void
add_dependence (rtx con, rtx pro, enum reg_note dep_type)
{
if (dep_type == REG_DEP_CONTROL
&& !(current_sched_info->flags & DO_PREDICATION))
dep_type = REG_DEP_ANTI;
/* A REG_DEP_CONTROL dependence may be eliminated through predication,
so we must also make the insn dependent on the setter of the
condition. */