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tree-ssa-dce.c (remove_dead_stmt): Update profile.

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* tree-ssa-dce.c (remove_dead_stmt): Update profile.
	* tree-split_edge.c (tree_split_edge): Likewise.
	(thread_jumps): Likewise.

From-SVN: r87284
This commit is contained in:
Jan Hubicka 2004-09-10 10:58:47 +02:00 committed by Jan Hubicka
parent 229031d0e2
commit b829f3fac7
3 changed files with 26 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2004-09-10 Jan Hubicka <jh@suse.cz>
* tree-ssa-dce.c (remove_dead_stmt): Update profile.
* tree-split_edge.c (tree_split_edge): Likewise.
(thread_jumps): Likewise.
2004-09-10 Kazu Hirata <kazu@cs.umass.edu>
* cgraphunit.c, predict.c, tree-ssa-loop-ivopts.c: Fix comment

18
gcc/tree-cfg.c
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@ -3018,7 +3018,11 @@ tree_split_edge (edge edge_in)
after_bb = edge_in->src;
new_bb = create_empty_bb (after_bb);
new_bb->frequency = EDGE_FREQUENCY (edge_in);
new_bb->count = edge_in->count;
new_edge = make_edge (new_bb, dest, EDGE_FALLTHRU);
new_edge->probability = REG_BR_PROB_BASE;
new_edge->count = edge_in->count;
/* Find all the PHI arguments on the original edge, and change them to
the new edge. Do it before redirection, so that the argument does not
@ -3852,6 +3856,8 @@ thread_jumps (void)
forwardable. */
for (e = bb->succ; e; e = next)
{
int freq;
gcov_type count;
next = e->succ_next;
/* If the edge is abnormal or its destination is not
@ -3860,6 +3866,9 @@ thread_jumps (void)
|| !tree_forwarder_block_p (e->dest))
continue;
count = e->count;
freq = EDGE_FREQUENCY (e);
/* Now walk through as many forwarder block as possible to
find the ultimate destination we want to thread our jump
to. */
@ -3879,6 +3888,15 @@ thread_jumps (void)
break;
bb_ann (dest)->forwardable = 0;
dest->frequency -= freq;
if (dest->frequency < 0)
dest->frequency = 0;
dest->count -= count;
if (dest->count < 0)
dest->count = 0;
dest->succ->count -= count;
if (dest->succ->count < 0)
dest->succ->count = 0;
}
/* Reset the forwardable marks to 1. */

2
gcc/tree-ssa-dce.c
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@ -739,6 +739,8 @@ remove_dead_stmt (block_stmt_iterator *i, basic_block bb)
/* Redirect the first edge out of BB to reach POST_DOM_BB. */
redirect_edge_and_branch (bb->succ, post_dom_bb);
PENDING_STMT (bb->succ) = NULL;
bb->succ->probability = REG_BR_PROB_BASE;
bb->succ->count = bb->count;
/* The edge is no longer associated with a conditional, so it does
not have TRUE/FALSE flags. */