diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-09-26 13:18:31 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-09-26 13:18:31 +0000 |
| commit | 688425e8fb82effae7a31357f9166c0cf10dbd7d (patch) | |
| tree | 3bd405507fb88ca50d81b2390e2a1e2748dce936 /gcc/tree-ssa-coalesce.c | |
| parent | ad7b4225f63bb19272e2ad8770a1ebaeace6b1b9 (diff) | |
| download | gcc-688425e8fb82effae7a31357f9166c0cf10dbd7d.tar.gz | |
2013-09-26 Richard Biener <rguenther@suse.de>
* tree-ssa-live.c (var_map_base_init): Handle SSA names with
DECL_IGNORED_P base VAR_DECLs like anonymous SSA names.
(loe_visit_block): Use gcc_checking_assert.
* tree-ssa-coalesce.c (create_outofssa_var_map): Use
gimple_assign_ssa_name_copy_p.
(gimple_can_coalesce_p): Adjust according to the var_map_base_init
change.
* gcc.dg/tree-ssa/coalesce-2.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202944 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-coalesce.c')
| -rw-r--r-- | gcc/tree-ssa-coalesce.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/gcc/tree-ssa-coalesce.c b/gcc/tree-ssa-coalesce.c index d86e0b86560..cfcd1e07b80 100644 --- a/gcc/tree-ssa-coalesce.c +++ b/gcc/tree-ssa-coalesce.c @@ -980,10 +980,7 @@ create_outofssa_var_map (coalesce_list_p cl, bitmap used_in_copy) { tree lhs = gimple_assign_lhs (stmt); tree rhs1 = gimple_assign_rhs1 (stmt); - - if (gimple_assign_copy_p (stmt) - && TREE_CODE (lhs) == SSA_NAME - && TREE_CODE (rhs1) == SSA_NAME + if (gimple_assign_ssa_name_copy_p (stmt) && gimple_can_coalesce_p (lhs, rhs1)) { v1 = SSA_NAME_VERSION (lhs); @@ -1347,7 +1344,11 @@ gimple_can_coalesce_p (tree name1, tree name2) { /* First check the SSA_NAME's associated DECL. We only want to coalesce if they have the same DECL or both have no associated DECL. */ - if (SSA_NAME_VAR (name1) != SSA_NAME_VAR (name2)) + tree var1 = SSA_NAME_VAR (name1); + tree var2 = SSA_NAME_VAR (name2); + var1 = (var1 && (!VAR_P (var1) || !DECL_IGNORED_P (var1))) ? var1 : NULL_TREE; + var2 = (var2 && (!VAR_P (var2) || !DECL_IGNORED_P (var2))) ? var2 : NULL_TREE; + if (var1 != var2) return false; /* Now check the types. If the types are the same, then we should |