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flow.c (life_analysis_1): Enable "rescan" code after reload. 

* flow.c (life_analysis_1): Enable "rescan" code after reload.
        (propagate_block): Delete dead code after reload.

From-SVN: r23262
This commit is contained in:
Jeffrey A Law 1998-10-23 20:34:52 +00:00 committed by Jeff Law
parent a1ef0af4d2
commit b590bbfd11
2 changed files with 5 additions and 3 deletions
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gcc/ChangeLog
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@ -26,6 +26,9 @@ Fri Oct 23 15:34:14 1998 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
Fri Oct 23 13:12:35 1998 Jeffrey A Law (law@cygnus.com)
* flow.c (life_analysis_1): Enable "rescan" code after reload.
(propagate_block): Delete dead code after reload.
* sched.c (update_flow_info): Revert Oct 19, 1998 change. Brings
back Oct 15, 1998 change.
* haifa-sched.c (update_flow_info): Likewise.

5
gcc/flow.c
View File

@ -1457,8 +1457,7 @@ life_analysis_1 (f, nregs)
basic_block_live_at_end[i], 0, j,
{
consider = 1;
if (!reload_completed
&& REGNO_REG_SET_P (basic_block_significant[i], j))
if (REGNO_REG_SET_P (basic_block_significant[i], j))
{
must_rescan = 1;
goto done;
@ -1797,7 +1796,7 @@ propagate_block (old, first, last, final, significant, bnum)
"delete" it by turning it into a NOTE of type NOTE_INSN_DELETED.
We could really delete it with delete_insn, but that
can cause trouble for first or last insn in a basic block. */
if (!reload_completed && final && insn_is_dead)
if (final && insn_is_dead)
{
PUT_CODE (insn, NOTE);
NOTE_LINE_NUMBER (insn) = NOTE_INSN_DELETED;