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| author | Jan Hubicka <jh@suse.cz> | 2004-09-19 18:04:03 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2004-09-19 16:04:03 +0000 |
| commit | 15db5571d1567a4d05812f85853b9b95766b8f2e (patch) | |
| tree | 2864608d6a5ce3c527756be3a276cd609e29f91f /gcc/tree-ssa-threadupdate.c | |
| parent | 9714133875a19fcb1258b79d8c035d7a8d240d61 (diff) | |
| download | gcc-15db5571d1567a4d05812f85853b9b95766b8f2e.zip gcc-15db5571d1567a4d05812f85853b9b95766b8f2e.tar.gz gcc-15db5571d1567a4d05812f85853b9b95766b8f2e.tar.bz2 | |
basic-block.h (update_bb_profile_after_threading): Declare.
* basic-block.h (update_bb_profile_after_threading): Declare.
* cfg.c (update_bb_profile_after_threading): Break out from ...
* cfgcleanup.c (try_forward_edges): ... here; use it.
* tree-ssa-dom.c (thread_across_edge): Use it.
* tree-ssa-threadupdate.c (create_block_for_threading): Zero out
profile of the new BB.
From-SVN: r87730
Diffstat (limited to 'gcc/tree-ssa-threadupdate.c')
| -rw-r--r-- | gcc/tree-ssa-threadupdate.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/tree-ssa-threadupdate.c b/gcc/tree-ssa-threadupdate.c index ce6dcad..112509f 100644 --- a/gcc/tree-ssa-threadupdate.c +++ b/gcc/tree-ssa-threadupdate.c @@ -172,17 +172,25 @@ static void create_block_for_threading (basic_block bb, struct redirection_data *rd) { tree phi; + edge e; /* We can use the generic block duplication code and simply remove the stuff we do not need. */ rd->dup_block = duplicate_block (bb, NULL); + /* Zero out the profile, since the block is unreachable for now. */ + rd->dup_block->frequency = 0; + rd->dup_block->count = 0; + /* The call to duplicate_block will copy everything, including the useless COND_EXPR or SWITCH_EXPR at the end of the block. We just remove the useless COND_EXPR or SWITCH_EXPR here rather than having a specialized block copier. */ remove_last_stmt_and_useless_edges (rd->dup_block, rd->outgoing_edge->dest); + for (e = rd->dup_block->succ; e; e = e->succ_next) + e->count = 0; + /* If there are any PHI nodes at the destination of the outgoing edge from the duplicate block, then we will need to add a new argument to them. The argument should have the same value as the argument |