From 3ce7c5a21da0c2e0d865a9457a8fda2529abb959 Mon Sep 17 00:00:00 2001 From: Jeffrey A Law Date: Tue, 25 May 1999 13:14:40 +0000 Subject: flow.c (mark_set_1): Do not record BLKmode stores as dead store elimination candidates. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit � * flow.c (mark_set_1): Do not record BLKmode stores as dead store elimination candidates. From-SVN: r27140 --- gcc/flow.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'gcc/flow.c') diff --git a/gcc/flow.c b/gcc/flow.c index b46c87e..a519ea8 100644 --- a/gcc/flow.c +++ b/gcc/flow.c @@ -3258,6 +3258,9 @@ mark_set_1 (needed, dead, x, insn, significant) invalidate_mems_from_autoinc (insn); if (GET_CODE (reg) == MEM && ! side_effects_p (reg) + /* We do not know the size of a BLKmode store, so we do not track + them for redundant store elimination. */ + && GET_MODE (reg) != BLKmode /* There are no REG_INC notes for SP, so we can't assume we'll see everything that invalidates it. To be safe, don't eliminate any stores though SP; none of them should be redundant anyway. */ -- cgit v1.1