From: Claudiu Zissulescu <claziss@synopsys.com>
Date: Thu, 31 Aug 2017 14:35:47 +0000 (+0200)
Subject: [ARC] Update can_follow_jump hook helper.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=28f4ff35247bb085d5de9816c6ced4dc4e14269e;p=gcc.git

[ARC] Update can_follow_jump hook helper.

Short branches cannot be used to jump between hot/cold
sections. Update the hook.

gcc/
2017-04-26  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.c (arc_can_follow_jump): Check for short
	branches.

From-SVN: r251566
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c0e032b1a77..cf1e005c158 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2017-08-31  Claudiu Zissulescu  <claziss@synopsys.com>
+
+	* config/arc/arc.c (arc_can_follow_jump): Check for short
+	branches.
+
 2017-08-31  Claudiu Zissulescu  <claziss@synopsys.com>
 
 	* config.gcc: Use g.opt for arc.
diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
index 4dcac1892a7..bc73a591fa4 100644
--- a/gcc/config/arc/arc.c
+++ b/gcc/config/arc/arc.c
@@ -9845,6 +9845,9 @@ arc_can_follow_jump (const rtx_insn *follower, const rtx_insn *followee)
   if (CROSSING_JUMP_P (followee))
     switch (get_attr_type (u.r))
       {
+      case TYPE_BRANCH:
+	if (get_attr_length (u.r) != 2)
+	  break;
       case TYPE_BRCC:
       case TYPE_BRCC_NO_DELAY_SLOT:
 	return false;