From b114d73a7bf4a3ddcc7088da11f842233aecac0a Mon Sep 17 00:00:00 2001
From: Steven Bosscher <steven@gcc.gnu.org>
Date: Thu, 24 Dec 2009 12:28:52 +0000
Subject: [PATCH] store-motion.c (build_store_vectors): Clear regs_set_in_block
at the start of a loop over basic blocks.
* store-motion.c (build_store_vectors): Clear regs_set_in_block at
the start of a loop over basic blocks.
From-SVN: r155454
---
gcc/ChangeLog | 5 +++++
gcc/store-motion.c | 2 ++
2 files changed, 7 insertions(+)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f7583c26fbc2..f8b5fcebdcd1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2009-12-24 Steven Bosscher <steven@gcc.gnu.org>
+
+ * store-motion.c (build_store_vectors): Clear regs_set_in_block at
+ the start of a loop over basic blocks.
+
2009-12-24 Julian Brown <julian@codesourcery.com>
Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
diff --git a/gcc/store-motion.c b/gcc/store-motion.c
index 4878729eec02..ffccd220f5b3 100644
--- a/gcc/store-motion.c
+++ b/gcc/store-motion.c
@@ -1067,6 +1067,8 @@ build_store_vectors (void)
FOR_EACH_BB (bb)
{
+ memset (regs_set_in_block, 0, sizeof (int) * max_gcse_regno);
+
FOR_BB_INSNS (bb, insn)
if (INSN_P (insn))
{
--
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