package/gcc/arc-2017.09-release/0001-fix-checking-for-jumps.patch

From c2694d3739d90ea3350b42252638b604a2c122b7 Mon Sep 17 00:00:00 2001
From: Claudiu Zissulescu <claziss@gmail.com>
Date: Tue, 7 Nov 2017 20:16:41 +0200
Subject: [PATCH] [FIX][ZOL] fix checking for jumps

Signed-off-by: Evgeniy Didin <didin@synopsys.com>
---
 gcc/config/arc/arc.c                  |  3 ++-
 gcc/testsuite/gcc.target/arc/loop-4.c | 14 ++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/gcc.target/arc/loop-4.c

diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
index 22eeb34a371..5d367499d03 100644
--- a/gcc/config/arc/arc.c
+++ b/gcc/config/arc/arc.c
@@ -7505,7 +7505,8 @@ hwloop_optimize (hwloop_info loop)
       && INSN_P (last_insn)
       && (JUMP_P (last_insn) || CALL_P (last_insn)
 	  || GET_CODE (PATTERN (last_insn)) == SEQUENCE
-	  || JUMP_P (prev_active_insn (last_insn))
+	  || (prev_active_insn (last_insn)
+	      && JUMP_P (prev_active_insn (last_insn)))
 	  /* At this stage we can have (insn (clobber (mem:BLK
 	     (reg)))) instructions, ignpre them.  */
 	  || (GET_CODE (PATTERN (last_insn)) != CLOBBER
diff --git a/gcc/testsuite/gcc.target/arc/loop-4.c b/gcc/testsuite/gcc.target/arc/loop-4.c
new file mode 100644
index 00000000000..99a93a74d1e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arc/loop-4.c
@@ -0,0 +1,14 @@
+/* { dg-do assemble } */
+/* { dg-do compile } */
+/* { dg-options "-Os" } */
+
+
+void fn1(void *p1, int p2, int p3)
+{
+  char *d = p1;
+  do
+    *d++ = p2;
+  while (--p3);
+}
+
+/* { dg-final { scan-assembler "lp_count" } } */
-- 
2.11.0