[PATCH] Disable compact casesi patterns for arcv2

[Claudiu Zissulescu <Claudiu.Zissulescu@synopsys.com>]

Here it is.  The previous version had more mods which should be in a different patch.

Please let me know if you still have issues with it,
Claudiu

gcc/
2016-05-09  Claudiu Zissulescu  <claziss@synopsys.com>

	* common/config/arc/arc-common.c (arc_option_optimization_table):
	Remove compact casesi option.
	* config/arc/arc.c (arc_override_options): Use compact casesi
	option only for pre-ARCv2 cores.
---
 gcc/common/config/arc/arc-common.c | 1 -
 gcc/config/arc/arc.c               | 7 +++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/gcc/common/config/arc/arc-common.c b/gcc/common/config/arc/arc-common.c
index f5b9c6d..5b687fb 100644
--- a/gcc/common/config/arc/arc-common.c
+++ b/gcc/common/config/arc/arc-common.c
@@ -56,7 +56,6 @@ static const struct default_options arc_option_optimization_table[] =
     { OPT_LEVELS_ALL, OPT_mbbit_peephole, NULL, 1 },
     { OPT_LEVELS_SIZE, OPT_mq_class, NULL, 1 },
     { OPT_LEVELS_SIZE, OPT_mcase_vector_pcrel, NULL, 1 },
-    { OPT_LEVELS_SIZE, OPT_mcompact_casesi, NULL, 1 },
     { OPT_LEVELS_NONE, 0, NULL, 0 }
   };
 
diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
index 2b25b0b..825bccf 100644
--- a/gcc/config/arc/arc.c
+++ b/gcc/config/arc/arc.c
@@ -858,6 +858,13 @@ arc_override_options (void)
   if (arc_size_opt_level == 3)
     optimize_size = 1;
 
+  /* Compact casesi is not a valid option for ARCv2 family, disable
+     it.  */
+  if (TARGET_V2)
+    TARGET_COMPACT_CASESI = 0;
+  else if (optimize_size == 1)
+    TARGET_COMPACT_CASESI = 1;
+
   if (flag_pic)
     target_flags |= MASK_NO_SDATA_SET;
 
-- 
1.9.1