diff options
| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-03-17 12:35:04 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-03-17 12:35:04 +0000 |
| commit | c75be2fe9633253367cbc9d1ae26776b5b7e175a (patch) | |
| tree | f38d80304975154c0fc076b80fccc2023ac48021 /gcc/dse.c | |
| parent | 7c51b530f32f5b5cfa1a10a6f6c30dc1c6df6240 (diff) | |
| download | gcc-c75be2fe9633253367cbc9d1ae26776b5b7e175a.tar.gz | |
PR rtl-optimization/48141
* dse.c (record_store): If no positions are needed in an insn
that cannot be deleted, at least unchain it from active_local_stores.
* gcc.dg/pr48141.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@171089 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/dse.c')
| -rw-r--r-- | gcc/dse.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/gcc/dse.c b/gcc/dse.c index 8e9b6454e39..e43ab72d742 100644 --- a/gcc/dse.c +++ b/gcc/dse.c @@ -1,5 +1,5 @@ /* RTL dead store elimination. - Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 + Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. Contributed by Richard Sandiford <rsandifor@codesourcery.com> @@ -1530,8 +1530,7 @@ record_store (rtx body, bb_info_t bb_info) /* An insn can be deleted if every position of every one of its s_infos is zero. */ - if (any_positions_needed_p (s_info) - || ptr->cannot_delete) + if (any_positions_needed_p (s_info)) del = false; if (del) @@ -1543,7 +1542,8 @@ record_store (rtx body, bb_info_t bb_info) else active_local_stores = ptr->next_local_store; - delete_dead_store_insn (insn_to_delete); + if (!insn_to_delete->cannot_delete) + delete_dead_store_insn (insn_to_delete); } else last = ptr; |