diff options
| author | Alan Hayward <alan.hayward@arm.com> | 2016-06-03 13:04:01 +0000 |
|---|---|---|
| committer | Alan Hayward <alan.hayward@arm.com> | 2016-06-03 13:04:01 +0000 |
| commit | 104ead198b7898679fb68af8d8b537c03343fa24 (patch) | |
| tree | 99fd49e5d691798fb795a84f777458870da59667 /gcc/tree-vect-loop.c | |
| parent | edcfc0afcb2b870c9436315b7ae2fec38afefca0 (diff) | |
2016-06-03 Alan Hayward <alan.hayward@arm.com>
[3/3] No need to vectorize simple only-live stmts
gcc/
* tree-vect-stmts.c (vect_stmt_relevant_p): Do not vectorize non live
relevant stmts which are simple and invariant.
* tree-vect-loop.c (vectorizable_live_operation): Check relevance
instead of simple and invariant
testsuite/
* gcc.dg/vect/vect-live-slp-5.c: Remove dg check.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@237065 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-vect-loop.c')
| -rw-r--r-- | gcc/tree-vect-loop.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index 3cf1c795e69..bc1257c86d4 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -6344,11 +6344,12 @@ vectorizable_live_operation (gimple *stmt, if (nested_in_vect_loop_p (loop, stmt)) return false; - /* If STMT is a simple assignment and its inputs are invariant, then it can - remain in place, unvectorized. The original last scalar value that it - computes will be used. */ - if (is_simple_and_all_uses_invariant (stmt, loop_vinfo)) + /* If STMT is not relevant and it is a simple assignment and its inputs are + invariant then it can remain in place, unvectorized. The original last + scalar value that it computes will be used. */ + if (!STMT_VINFO_RELEVANT_P (stmt_info)) { + gcc_assert (is_simple_and_all_uses_invariant (stmt, loop_vinfo)); if (dump_enabled_p ()) dump_printf_loc (MSG_NOTE, vect_location, "statement is simple and uses invariant. Leaving in " |