genemit: Factor out code common to insns and expands

Mostly to reduce cut-&-paste.

gcc/
	* genemit.cc (start_gen_insn): New function, split out from...
	(gen_insn, gen_expand): ...here.

diff --git a/gcc/genemit.cc b/gcc/genemit.cc
index b73a45a04125581b72f0965b34ab555d365ad8f4..90f36e293b4bb300d64760621983ab95bfb06286 100644 (file)
--- a/gcc/genemit.cc
+++ b/gcc/genemit.cc
@@ -427,13 +427,32 @@ maybe_queue_insn (const md_rtx_info &info)
   queue.safe_push (info);
 }
 
+/* Output the function name, argument declarations, and initial function
+   body for a pattern called NAME, given that it has the properties
+   in STATS.  */
+
+static void
+start_gen_insn (FILE *file, const char *name, const pattern_stats &stats)
+{
+  fprintf (file, "rtx\ngen_%s (", name);
+  if (stats.num_generator_args)
+    for (int i = 0; i < stats.num_generator_args; i++)
+      if (i)
+       fprintf (file, ",\n\trtx operand%d ATTRIBUTE_UNUSED", i);
+      else
+       fprintf (file, "rtx operand%d ATTRIBUTE_UNUSED", i);
+  else
+    fprintf (file, "void");
+  fprintf (file, ")\n");
+  fprintf (file, "{\n");
+}
+
 /* Generate the `gen_...' function for a DEFINE_INSN.  */
 
 static void
 gen_insn (const md_rtx_info &info, FILE *file)
 {
   struct pattern_stats stats;
-  int i;
 
   /* Find out how many operands this function has.  */
   rtx insn = info.def;
@@ -442,17 +461,7 @@ gen_insn (const md_rtx_info &info, FILE *file)
     fatal_at (info.loc, "match_dup operand number has no match_operand");
 
   /* Output the function name and argument declarations.  */
-  fprintf (file, "rtx\ngen_%s (", XSTR (insn, 0));
-  if (stats.num_generator_args)
-    for (i = 0; i < stats.num_generator_args; i++)
-      if (i)
-       fprintf (file, ",\n\trtx operand%d ATTRIBUTE_UNUSED", i);
-      else
-       fprintf (file, "rtx operand%d ATTRIBUTE_UNUSED", i);
-  else
-    fprintf (file, "void");
-  fprintf (file, ")\n");
-  fprintf (file, "{\n");
+  start_gen_insn (file, XSTR (insn, 0), stats);
 
   /* Output code to construct and return the rtl for the instruction body.  */
 
@@ -499,17 +508,7 @@ gen_expand (const md_rtx_info &info, FILE *file)
              "numbers above all other operands", XSTR (expand, 0));
 
   /* Output the function name and argument declarations.  */
-  fprintf (file, "rtx\ngen_%s (", XSTR (expand, 0));
-  if (stats.num_generator_args)
-    for (i = 0; i < stats.num_generator_args; i++)
-      if (i)
-       fprintf (file, ",\n\trtx operand%d", i);
-      else
-       fprintf (file, "rtx operand%d", i);
-  else
-    fprintf (file, "void");
-  fprintf (file, ")\n");
-  fprintf (file, "{\n");
+  start_gen_insn (file, XSTR (expand, 0), stats);
 
   /* If we don't have any C code to write, only one insn is being written,
      and no MATCH_DUPs are present, we can just return the desired insn