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| author | Zdenek Dvorak <ook@ucw.cz> | 2007-08-01 13:41:25 +0200 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2007-08-01 11:41:25 +0000 |
| commit | 7c8eb2939314e32030ac3aa1ed273589c8044cf8 (patch) | |
| tree | 4429f1d87e4566df2983221bc468a3f711b3f0e1 /gcc/tree-cfg.c | |
| parent | 592c303da820745055bf6fd1521e2b2bf1318652 (diff) | |
| download | gcc-7c8eb2939314e32030ac3aa1ed273589c8044cf8.zip gcc-7c8eb2939314e32030ac3aa1ed273589c8044cf8.tar.gz gcc-7c8eb2939314e32030ac3aa1ed273589c8044cf8.tar.bz2 | |
tree-cfg.c (tree_merge_blocks): Preserve loop exit phi nodes only in loop closed ssa.
* tree-cfg.c (tree_merge_blocks): Preserve loop exit phi nodes only
in loop closed ssa.
From-SVN: r127119
Diffstat (limited to 'gcc/tree-cfg.c')
| -rw-r--r-- | gcc/tree-cfg.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c index d0c8fe9..c24b1c6 100644 --- a/gcc/tree-cfg.c +++ b/gcc/tree-cfg.c @@ -1274,9 +1274,10 @@ tree_merge_blocks (basic_block a, basic_block b) tree copy; bool may_replace_uses = may_propagate_copy (def, use); - /* In case we have loops to care about, do not propagate arguments of - loop closed ssa phi nodes. */ + /* In case we maintain loop closed ssa form, do not propagate arguments + of loop exit phi nodes. */ if (current_loops + && (current_loops->state & LOOP_CLOSED_SSA) && is_gimple_reg (def) && TREE_CODE (use) == SSA_NAME && a->loop_father != b->loop_father) |