From 1ca63357cb07ce7c61ad275d8f870187d8dd8950 Mon Sep 17 00:00:00 2001
From: Alexandre Oliva <aoliva@redhat.com>
Date: Fri, 22 Jun 2012 01:30:00 +0000
Subject: * ddg.c (build_intra_loop_deps): Discard deps of nondebug on debug.

From-SVN: r188867
---
 gcc/ddg.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'gcc/ddg.c')

diff --git a/gcc/ddg.c b/gcc/ddg.c
index 853f5ea..a7d3e66 100644
--- a/gcc/ddg.c
+++ b/gcc/ddg.c
@@ -531,7 +531,15 @@ build_intra_loop_deps (ddg_ptr g)
 
       FOR_EACH_DEP (dest_node->insn, SD_LIST_BACK, sd_it, dep)
 	{
-	  ddg_node_ptr src_node = get_node_of_insn (g, DEP_PRO (dep));
+	  rtx src_insn = DEP_PRO (dep);
+	  ddg_node_ptr src_node;
+
+	  /* Don't add dependencies on debug insns to non-debug insns
+	     to avoid codegen differences between -g and -g0.  */
+	  if (DEBUG_INSN_P (src_insn) && !DEBUG_INSN_P (dest_node->insn))
+	    continue;
+
+	  src_node = get_node_of_insn (g, src_insn);
 
 	  if (!src_node)
 	    continue;
-- 
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