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| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-12-28 06:34:55 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-12-28 06:34:55 +0000 |
| commit | aaa3ff4c0dd087e7846c99c39e0a7ea009de122e (patch) | |
| tree | 89813ab795808911800079fa9ce04037cfed2baa | |
| parent | d8fec1042a0324b660e453112d92e9a6b5773e0c (diff) | |
| download | ppe42-gcc-aaa3ff4c0dd087e7846c99c39e0a7ea009de122e.tar.gz ppe42-gcc-aaa3ff4c0dd087e7846c99c39e0a7ea009de122e.zip | |
* tree-ssa-dom.c (thread_across_edge): Remove broken code to
avoid threading into a loop.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@92666 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-ssa-dom.c | 16 |
2 files changed, 5 insertions, 16 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9f1531ed77c..5526fcb685e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-12-27 Jeff Law <law@redhat.com> + + * tree-ssa-dom.c (thread_across_edge): Remove broken code to + avoid threading into a loop. + 2004-12-27 Richard Henderson <rth@redhat.com> PR target/17406 diff --git a/gcc/tree-ssa-dom.c b/gcc/tree-ssa-dom.c index 81fdb0e8652..67446b1432f 100644 --- a/gcc/tree-ssa-dom.c +++ b/gcc/tree-ssa-dom.c @@ -686,22 +686,6 @@ thread_across_edge (struct dom_walk_data *walk_data, edge e) || TREE_CODE (stmt) == SWITCH_EXPR)) { tree cond, cached_lhs; - edge e1; - edge_iterator ei; - - /* Do not forward entry edges into the loop. In the case loop - has multiple entry edges we may end up in constructing irreducible - region. - ??? We may consider forwarding the edges in the case all incoming - edges forward to the same destination block. */ - if (!e->flags & EDGE_DFS_BACK) - { - FOR_EACH_EDGE (e1, ei, e->dest->preds) - if (e1->flags & EDGE_DFS_BACK) - break; - if (e1) - return; - } /* Now temporarily cprop the operands and try to find the resulting expression in the hash tables. */ |
