yocto-poky/meta/recipes-devtools/gcc/gcc-4.9/0059-gcc-PR-rtl-optimization-63348.patch

From 6eae3e637fcc22d21b51d44d61e3a9cb4825e776 Mon Sep 17 00:00:00 2001
From: Jackie Huang <jackie.huang@windriver.com>
Date: Thu, 30 Oct 2014 20:37:14 -0700
Subject: [PATCH]PR rtl-optimization/63348
 
PR rtl-optimization/63348
* emit-rtl.c (try_split): Do not emit extra barrier.

Note: this patch is to fix the side effect introduced by r212171 which was reported at:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63348

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@215613 138bc75d-0d04-0410-961f-82ee72b054a4

Upstream-Status: Backport [https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=215613]
Signed-off-by: Baoshan Pang <baoshan.pang@windriver.com>
Signed-off-by: Jackie Huang <jackie.huang@windriver.com>
---
 gcc/emit-rtl.c |   11 -----------
 1 files changed, 0 insertions(+), 11 deletions(-)

diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c
index 4736f8d..ae69dbd 100644
--- a/gcc/emit-rtl.c
+++ b/gcc/emit-rtl.c
@@ -3422,7 +3422,6 @@ try_split (rtx pat, rtx trial, int last)
 {
   rtx before = PREV_INSN (trial);
   rtx after = NEXT_INSN (trial);
-  int has_barrier = 0;
   rtx note, seq, tem;
   int probability;
   rtx insn_last, insn;
@@ -3441,14 +3440,6 @@ try_split (rtx pat, rtx trial, int last)
 
   split_branch_probability = -1;
 
-  /* If we are splitting a JUMP_INSN, it might be followed by a BARRIER.
-     We may need to handle this specially.  */
-  if (after && BARRIER_P (after))
-    {
-      has_barrier = 1;
-      after = NEXT_INSN (after);
-    }
-
   if (!seq)
     return trial;
 
@@ -3594,8 +3585,6 @@ try_split (rtx pat, rtx trial, int last)
   tem = emit_insn_after_setloc (seq, trial, INSN_LOCATION (trial));
 
   delete_insn (trial);
-  if (has_barrier)
-    emit_barrier_after (tem);
 
   /* Recursively call try_split for each new insn created; by the
      time control returns here that insn will be fully split, so
-- 
1.7.1