rtl.h (emit): Add an optional boolean parameter to control whether barriers are emitted.

gcc/
	* rtl.h (emit): Add an optional boolean parameter to control
	whether barriers are emitted.
	* emit-rtl.c (emit): Likewise.
	* gensupport.c (get_emit_function): Return null rather than "emit".
	* genemit.c (gen_emit_seq): Handle the null return value.
	Don't emit barriers after the final instruction in the sequence.
	* gentarget-def.c (main): Don't emit barriers after the instruction.

From-SVN: r225000

1 files changed, 15 insertions, 5 deletions

diff --git a/gcc/genemit.c b/gcc/genemit.c
index 15ec081..4ee07a0 100644
--- a/gcc/genemit.c
+++ b/gcc/genemit.c
@@ -277,12 +277,22 @@ gen_emit_seq (rtvec vec, char *used)
 {
   for (int i = 0, len = GET_NUM_ELEM (vec); i < len; ++i)
     {
+      bool last_p = (i == len - 1);
       rtx next = RTVEC_ELT (vec, i);
-      printf ("  %s (", get_emit_function (next));
-      gen_exp (next, DEFINE_EXPAND, used);
-      printf (");\n");
-      if (needs_barrier_p (next))
-	printf ("  emit_barrier ();");
+      if (const char *name = get_emit_function (next))
+	{
+	  printf ("  %s (", name);
+	  gen_exp (next, DEFINE_EXPAND, used);
+	  printf (");\n");
+	  if (!last_p && needs_barrier_p (next))
+	    printf ("  emit_barrier ();");
+	}
+      else
+	{
+	  printf ("  emit (");
+	  gen_exp (next, DEFINE_EXPAND, used);
+	  printf (", %s);\n", last_p ? "false" : "true");
+	}
     }
 }