diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/tree-cfg.c | 18 | ||||
| -rw-r--r-- | gcc/tree-ssa-dce.c | 2 |
3 files changed, 26 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5053005..af1e98e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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 diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c index 9452dff..14f7d1d 100644 --- a/gcc/tree-cfg.c +++ b/gcc/tree-cfg.c @@ -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. */ diff --git a/gcc/tree-ssa-dce.c b/gcc/tree-ssa-dce.c index ccfa0f5..fec54ab 100644 --- a/gcc/tree-ssa-dce.c +++ b/gcc/tree-ssa-dce.c @@ -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. */ |