[ARC] Fix logic set UNALIGNED_ACCESS

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

	* config/arc/arc-c.def (__ARC_UNALIGNED__): Set it on
	unaligned_access variable.
	* config/arc/arc.c (arc_override_options): Set unaligned access
	default on for HS CPUs.
	* config/arc/arc.h (STRICT_ALIGNMENT): Fix logic.

From-SVN: r269417

gcc/ChangeLog

+2019-03-06  Claudiu Zissulescu  <claziss@synopsys.com>
+
+	* config/arc/arc-c.def (__ARC_UNALIGNED__): Set it on
+	unaligned_access variable.
+	* config/arc/arc.c (arc_override_options): Set unaligned access
+	default on for HS CPUs.
+	* config/arc/arc.h (STRICT_ALIGNMENT): Fix logic.
+
 2019-03-06  Martin Liska  <mliska@suse.cz>
 
 	PR gcov-profile/89577

gcc/config/arc/arc-c.def

@@ -29,7 +29,7 @@ ARC_C_DEF ("__ARC_MUL64__",	TARGET_MUL64_SET)
 ARC_C_DEF ("__ARC_MUL32BY16__", TARGET_MULMAC_32BY16_SET)
 ARC_C_DEF ("__ARC_SIMD__",	TARGET_SIMD_SET)
 ARC_C_DEF ("__ARC_RF16__",	TARGET_RF16)
-ARC_C_DEF ("__ARC_UNALIGNED__", !STRICT_ALIGNMENT)
+ARC_C_DEF ("__ARC_UNALIGNED__", unaligned_access)
 
 ARC_C_DEF ("__ARC_BARREL_SHIFTER__", TARGET_BARREL_SHIFTER)
 

gcc/config/arc/arc.c

@@ -1313,6 +1313,10 @@ arc_override_options (void)
   if (TARGET_LONG_CALLS_SET)
     target_flags &= ~MASK_MILLICODE_THUNK_SET;
 
+  /* Set unaligned to all HS cpus.  */
+  if (!global_options_set.x_unaligned_access && TARGET_HS)
+    unaligned_access = 1;
+
   /* These need to be done at start up.  It's convenient to do them here.  */
   arc_init ();
 }

gcc/config/arc/arc.h

@@ -285,7 +285,7 @@ if (GET_MODE_CLASS (MODE) == MODE_INT		\
 /* On the ARC the lower address bits are masked to 0 as necessary.  The chip
    won't croak when given an unaligned address, but the insn will still fail
    to produce the correct result.  */
-#define STRICT_ALIGNMENT (!unaligned_access && !TARGET_HS)
+#define STRICT_ALIGNMENT (!unaligned_access)
 
 /* Layout of source language data types.  */