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| author | Jeff Law <law@redhat.com> | 2005-11-10 11:31:07 -0700 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2005-11-10 11:31:07 -0700 |
| commit | ae14e67b2f07321ced085681e771e246d9ab2341 (patch) | |
| tree | 985d6ecda4b0e82d74fab2b97185ebb8799a4eb5 | |
| parent | c900f6aa99082a0cc764ed8bef3d6e36680cdb4b (diff) | |
| download | gcc-ae14e67b2f07321ced085681e771e246d9ab2341.zip gcc-ae14e67b2f07321ced085681e771e246d9ab2341.tar.gz gcc-ae14e67b2f07321ced085681e771e246d9ab2341.tar.bz2 | |
tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Do not perform reassociation if the parent statement will not die as a result...
* tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Do not
perform reassociation if the parent statement will not die as
a result of the optimization.
From-SVN: r106744
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/tree-ssa-dom.c | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3a0cbc6..66e0e1d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2005-11-04 Jeff Law <law@redhat.com> + + PR middle-end/23181 + * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Do not + perform reassociation if the parent statement will not die as + a result of the optimization. + 2005-11-10 Daniel Berlin <dberlin@dberlin.org> * tree-ssa-alias.c (compute_may_aliases): Remove call to diff --git a/gcc/tree-ssa-dom.c b/gcc/tree-ssa-dom.c index cb5eeb0..1e0ebbc 100644 --- a/gcc/tree-ssa-dom.c +++ b/gcc/tree-ssa-dom.c @@ -1794,6 +1794,7 @@ simplify_rhs_and_lookup_avail_expr (tree stmt, int insert) assignment. Add minus to this, as we handle it specially below. */ if ((associative_tree_code (rhs_code) || rhs_code == MINUS_EXPR) && TREE_CODE (TREE_OPERAND (rhs, 0)) == SSA_NAME + && num_imm_uses (TREE_OPERAND (rhs, 0)) == 1 && is_gimple_min_invariant (TREE_OPERAND (rhs, 1))) { tree rhs_def_stmt = SSA_NAME_DEF_STMT (TREE_OPERAND (rhs, 0)); |