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| author | Diego Novillo <dnovillo@redhat.com> | 2004-06-30 11:06:28 +0000 |
|---|---|---|
| committer | Diego Novillo <dnovillo@gcc.gnu.org> | 2004-06-30 07:06:28 -0400 |
| commit | bddeccfe5d319972ef8dbf23b97870969654e8b1 (patch) | |
| tree | fd198b1e6a301537b6f017c6edf424dc0fc22722 /gcc/tree-vn.c | |
| parent | 9ac617d49582c168000b6e593e5c0b4bf2982ee0 (diff) | |
| download | gcc-bddeccfe5d319972ef8dbf23b97870969654e8b1.tar.gz | |
tree-ssa-pre.c (phi_trans_add): Use is_gimple_min_invariant to check for constants.
* tree-ssa-pre.c (phi_trans_add): Use is_gimple_min_invariant
to check for constants.
(set_remove): Likewise.
(value_replace_in_set): Likewise.
(find_leader): Likewise.
* tree-vn.c (set_value_handle): Likewise.
(vn_lookup): Likewise.
(vn_lookup_or_add): Likewise.
From-SVN: r83902
Diffstat (limited to 'gcc/tree-vn.c')
| -rw-r--r-- | gcc/tree-vn.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/gcc/tree-vn.c b/gcc/tree-vn.c index d83f75c3a61..b686af296af 100644 --- a/gcc/tree-vn.c +++ b/gcc/tree-vn.c @@ -168,7 +168,7 @@ set_value_handle (tree e, tree v) SSA_NAME_VALUE (e) = v; else if (EXPR_P (e) || DECL_P (e)) get_tree_ann (e)->common.value_handle = v; - else if (TREE_CODE_CLASS (TREE_CODE (e)) == 'c') + else if (is_gimple_min_invariant (e)) /* Do nothing. Constants are their own value handles. */ ; else @@ -214,8 +214,10 @@ vn_lookup (tree expr, vuse_optype vuses) void **slot; struct val_expr_pair_d vep = {NULL, NULL, NULL, 0}; - if (TREE_CODE_CLASS (TREE_CODE (expr)) == 'c') + /* Constants are their own value. */ + if (is_gimple_min_invariant (expr)) return expr; + vep.e = expr; vep.vuses = vuses; vep.hashcode = vn_compute (expr, 0, vuses); @@ -261,20 +263,20 @@ vn_lookup_or_add (tree expr, vuse_optype vuses) /* Get the value handle of EXPR. This is the only correct way to get the value handle for a "thing". If EXPR does not have a value - handle associated, it generates and returns a new one. */ + handle associated, it returns NULL_TREE. */ tree get_value_handle (tree expr) { if (TREE_CODE (expr) == SSA_NAME) return SSA_NAME_VALUE (expr); - else if (TREE_CODE_CLASS (TREE_CODE (expr)) == 'c') - return expr; else if (EXPR_P (expr) || DECL_P (expr)) { tree_ann_t ann = tree_ann (expr); return ((ann) ? ann->common.value_handle : NULL_TREE); } + else if (is_gimple_min_invariant (expr)) + return expr; abort (); } |