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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

​