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cfgcleanup.c (merge_blocks_move_predecessor_nojumps, [...]): Set BB_UPDATE_LIFE. 

* cfgcleanup.c (merge_blocks_move_predecessor_nojumps,
	merge_blocks_move_successors_nojumps): Set BB_UPDATE_LIFE.
	(merge_blocks): Properly udpate life after making edge nonfallthru.
	* cfgrtl.c (merge_blocks_nomove): Update global_live_at_end.

From-SVN: r46564
This commit is contained in:
Jan Hubicka 2001-10-27 12:17:44 +02:00 committed by Jan Hubicka
parent ba087771c0
commit 7dddfb65cf
3 changed files with 16 additions and 2 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
Sat Oct 27 12:12:09 CEST 2001 Jan Hubicka <jh@suse.cz>
* cfgcleanup.c (merge_blocks_move_predecessor_nojumps,
merge_blocks_move_successors_nojumps): Set BB_UPDATE_LIFE.
(merge_blocks): Properly udpate life after making edge nonfallthru.
* cfgrtl.c (merge_blocks_nomove): Update global_live_at_end.
2001-10-26 Kazu Hirata <kazu@hxi.com>
* config/h8300/h8300.c (get_shift_alg): Remove redundant code.

10
gcc/cfgcleanup.c
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@ -334,6 +334,7 @@ merge_blocks_move_predecessor_nojumps (a, b)
/* Scramble the insn chain. */
if (a->end != PREV_INSN (b->head))
reorder_insns_nobb (a->head, a->end, PREV_INSN (b->head));
BB_SET_FLAG (a, BB_UPDATE_LIFE);
if (rtl_dump_file)
{
@ -402,6 +403,7 @@ merge_blocks_move_successor_nojumps (a, b)
/* Now blocks A and B are contiguous. Merge them. */
merge_blocks_nomove (a, b);
BB_SET_FLAG (a, BB_UPDATE_LIFE);
if (rtl_dump_file)
{
@ -488,10 +490,14 @@ merge_blocks (e, b, c, mode)
if (b_has_incoming_fallthru)
{
rtx bb;
if (b_fallthru_edge->src == ENTRY_BLOCK_PTR)
return false;
BB_SET_FLAG (b_fallthru_edge, BB_UPDATE_LIFE);
notice_new_block (force_nonfallthru (b_fallthru_edge));
bb = force_nonfallthru (b_fallthru_edge);
if (bb)
notice_new_block (bb);
else
BB_SET_FLAG (b_fallthru_edge->src, BB_UPDATE_LIFE);
}
merge_blocks_move_predecessor_nojumps (b, c);
return true;

1
gcc/cfgrtl.c
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@ -603,6 +603,7 @@ merge_blocks_nomove (a, b)
/* B hasn't quite yet ceased to exist. Attempt to prevent mishap. */
b->pred = b->succ = NULL;
a->global_live_at_end = b->global_live_at_end;
expunge_block (b);