From 717f4048cd7e5d2ff7beb9276c0e09b4cb4d2faa Mon Sep 17 00:00:00 2001
From: Alexandre Oliva <aoliva@redhat.com>
Date: Tue, 20 Oct 2009 08:37:26 +0000
Subject: [PATCH] tree-ssa-dce.c (eliminate_unnecessary_stmts): Don't regard
the removal of a debug stmt as a significant change.
* tree-ssa-dce.c (eliminate_unnecessary_stmts): Don't regard
the removal of a debug stmt as a significant change.
From-SVN: r153007
---
gcc/ChangeLog | 5 +++++
gcc/tree-ssa-dce.c | 3 ++-
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1bc1f04dc7f5..17e513fd9594 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2009-10-20 Alexandre Oliva <aoliva@redhat.com>
+
+ * tree-ssa-dce.c (eliminate_unnecessary_stmts): Don't regard
+ the removal of a debug stmt as a significant change.
+
2009-10-20 Wolfgang Gellerich <gellerich@de.ibm.com>
* config/s390/s390.md: Added agen condition to operand
diff --git a/gcc/tree-ssa-dce.c b/gcc/tree-ssa-dce.c
index 7dd07c1ca2c7..f0135a9c42d5 100644
--- a/gcc/tree-ssa-dce.c
+++ b/gcc/tree-ssa-dce.c
@@ -1129,8 +1129,9 @@ eliminate_unnecessary_stmts (void)
/* If GSI is not necessary then remove it. */
if (!gimple_plf (stmt, STMT_NECESSARY))
{
+ if (!is_gimple_debug (stmt))
+ something_changed = true;
remove_dead_stmt (&gsi, bb);
- something_changed = true;
}
else if (is_gimple_call (stmt))
{
--
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