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| author | Richard Biener <rguenther@suse.de> | 2013-09-26 13:18:31 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2013-09-26 13:18:31 +0000 |
| commit | a2544177b989c29fe893e55d422c8d9e6f27c6b3 (patch) | |
| tree | 3bd405507fb88ca50d81b2390e2a1e2748dce936 /gcc/tree-ssa-coalesce.c | |
| parent | 6d1ca9a0f323e2de85299910ef0d8bcc9dc7a81d (diff) | |
| download | gcc-a2544177b989c29fe893e55d422c8d9e6f27c6b3.zip gcc-a2544177b989c29fe893e55d422c8d9e6f27c6b3.tar.gz gcc-a2544177b989c29fe893e55d422c8d9e6f27c6b3.tar.bz2 | |
tree-ssa-live.c (var_map_base_init): Handle SSA names with DECL_IGNORED_P base VAR_DECLs like anonymous SSA names.
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.
From-SVN: r202944
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 d86e0b8..cfcd1e0 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 |