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tree-ssa-dom.c (thread_across_edge): Speed up by avoiding a call to is_gimple_min_invariant if we know the result.

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* tree-ssa-dom.c (thread_across_edge): Speed up by avoiding a
	call to is_gimple_min_invariant if we know the result.

From-SVN: r92003
This commit is contained in:
Kazu Hirata 2004-12-10 17:58:07 +00:00 committed by Kazu Hirata
parent 01c49ce8bd
commit 26673217ad
2 changed files with 8 additions and 5 deletions
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3
gcc/ChangeLog
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@ -3,6 +3,9 @@
* tree-data-ref.c (free_data_refs): Free each data_reference
object.
* tree-ssa-dom.c (thread_across_edge): Speed up by avoiding a
call to is_gimple_min_invariant if we know the result.
2004-12-10 Jeff Law <law@redhat.com>
* tree-ssa-alias.c (setup_pointers_and_addressables): Remove

10
gcc/tree-ssa-dom.c
View File

@ -745,12 +745,12 @@ thread_across_edge (struct dom_walk_data *walk_data, edge e)
otherwise look it up in the hash tables. */
cached_lhs = local_fold (COND_EXPR_COND (dummy_cond));
if (! is_gimple_min_invariant (cached_lhs))
cached_lhs = lookup_avail_expr (dummy_cond, false);
if (!cached_lhs || ! is_gimple_min_invariant (cached_lhs))
{
cached_lhs = simplify_cond_and_lookup_avail_expr (dummy_cond,
NULL,
false);
cached_lhs = lookup_avail_expr (dummy_cond, false);
if (!cached_lhs || ! is_gimple_min_invariant (cached_lhs))
cached_lhs = simplify_cond_and_lookup_avail_expr (dummy_cond,
NULL,
false);
}
}
/* We can have conditionals which just test the state of a