[patch] print SEQUENCE of insns in sched-vis.c

[Steven Bosscher]

Hello,

sched-vis.c would print insns in a SEQUENCE as a pattern, in effect
printing only GET_CODE(insn). Fixed with this patch.

Bootstrapped&tested on powerpc64-unknown-linux-gnu and
sparc64-unknown-linux-gnu with some dump inspections to make sure
everything looks as expected now.
OK for trunk?

Ciao!
Steven

        * sched-vis.c (print_pattern): Print SEQUENCE of insns as insns.

Index: sched-vis.c
===================================================================
--- sched-vis.c (revision 197610)
+++ sched-vis.c (working copy)
@@ -51,6 +51,9 @@ along with GCC; see the file COPYING3.  If not see
 static bool rtl_slim_pp_initialized = false;
 static pretty_printer rtl_slim_pp;
 
+/* For insns we print patterns, and for some patterns we print insns...  */
+static void print_insn_with_notes (pretty_printer *, const_rtx);
+
 /* This recognizes rtx'en classified as expressions.  These are always
    represent some action on values or results of other expression, that
    may be stored in objects representing values.  */
@@ -562,14 +565,32 @@ print_pattern (pretty_printer *pp, const_rtx x, in
       break;
     case SEQUENCE:
       {
-       int i;
-
        pp_string (pp, "sequence{");
-       for (i = 0; i < XVECLEN (x, 0); i++)
+       if (INSN_P (XVECEXP (x, 0, 0)))
          {
-           print_pattern (pp, XVECEXP (x, 0, i), verbose);
-           pp_character (pp, ';');
+           /* Print the sequence insns indented.  */
+           const char * save_print_rtx_head = print_rtx_head;
+           char indented_print_rtx_head[32];
+
+           pp_newline (pp);
+           gcc_assert (strlen (print_rtx_head) < sizeof 
(indented_print_rtx_head) - 4);
+           snprintf (indented_print_rtx_head,
+                     sizeof (indented_print_rtx_head),
+                     "%s     ", print_rtx_head);
+           print_rtx_head = indented_print_rtx_head;
+           for (int i = 0; i < XVECLEN (x, 0); i++)
+             print_insn_with_notes (pp, XVECEXP (x, 0, i));
+           pp_printf (pp, "%s      ", save_print_rtx_head);
+           print_rtx_head = save_print_rtx_head;
          }
+       else
+         {
+           for (int i = 0; i < XVECLEN (x, 0); i++)
+             {
+               print_pattern (pp, XVECEXP (x, 0, i), verbose);
+               pp_character (pp, ';');
+             }
+         }
        pp_character (pp, '}');
       }
       break;