[PATCH 2/3] [ARC] Do not emit ZOL in the presence of text jump tables.

[Claudiu Zissulescu]

Avoid emitting lp instruction when in its ZOL body we find a jump table data
in text section.

gcc/
xxxx-xx-xx  Claudiu Zissulescu  <claz...@synopsys.com>

        * config/arc/arc.c (hwloop_optimize): Bailout when detecting a
        jump table data in the text section.
---
 gcc/config/arc/arc.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
index a92456b457d..9eab4c27284 100644
--- a/gcc/config/arc/arc.c
+++ b/gcc/config/arc/arc.c
@@ -7791,7 +7791,17 @@ hwloop_optimize (hwloop_info loop)
   for (insn = loop->start_label;
        insn && insn != loop->loop_end;
        insn = NEXT_INSN (insn))
-    length += NONDEBUG_INSN_P (insn) ? get_attr_length (insn) : 0;
+    {
+      length += NONDEBUG_INSN_P (insn) ? get_attr_length (insn) : 0;
+      if (JUMP_TABLES_IN_TEXT_SECTION
+         && JUMP_TABLE_DATA_P (insn))
+       {
+         if (dump_file)
+           fprintf (dump_file, ";; loop %d has a jump table\n",
+                    loop->loop_no);
+         return false;
+       }
+    }
 
   if (!insn)
     {
-- 
2.19.1