Improve readability of debug_tree() dumps for SSA_NAME and VECTOR_CST

gcc/ChangeLog:

	* print-tree.c (print_node) [VECTOR_CST]: Coalesce the output of
	identical consecutive elements.
	[SSA_NAME]: Print the name's def stmt on its own line.  When printing
	the node's def stmt, avoid printing an unwanted trailing newline by
	replacing the call to print_gimple_stmt() with its inlined body and
	adjusting it to not set pp_needs_newline and to call pp_flush()
	instead of pp_newline_and_flush().

From-SVN: r239661

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7496877c7ca6206a916ed93c95ef80814beafb02..e62f3313d927294c1e1a2790f352ff2dbd84c468 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+2016-08-22  Patrick Palka  <ppalka@gcc.gnu.org>
+
+       * print-tree.c (print_node) [VECTOR_CST]: Coalesce the output of
+       identical consecutive elements.
+       [SSA_NAME]: Print the name's def stmt on its own line.  When printing
+       the node's def stmt, avoid printing an unwanted trailing newline by
+       replacing the call to print_gimple_stmt() with its inlined body and
+       adjusting it to not set pp_needs_newline and to call pp_flush()
+       instead of pp_newline_and_flush().
+
 2016-08-22  Joseph Myers  <joseph@codesourcery.com>
 
        * tree.h (CASE_FLT_FN_FLOATN_NX, float16_type_node)

diff --git a/gcc/print-tree.c b/gcc/print-tree.c
index 468f1ff49e1deca66630877bd19e2289516fc588..7546f19e33e96df03d29aa6c63e09135bf7b7e25 100644 (file)
--- a/gcc/print-tree.c
+++ b/gcc/print-tree.c
@@ -770,8 +770,18 @@ print_node (FILE *file, const char *prefix, tree node, int indent)
 
            for (i = 0; i < VECTOR_CST_NELTS (node); ++i)
              {
-               sprintf (buf, "elt%u: ", i);
+               unsigned j;
+               /* Coalesce the output of identical consecutive elements.  */
+               for (j = i + 1; j < VECTOR_CST_NELTS (node); j++)
+                 if (VECTOR_CST_ELT (node, j) != VECTOR_CST_ELT (node, i))
+                   break;
+               j--;
+               if (i == j)
+                 sprintf (buf, "elt%u: ", i);
+               else
+                 sprintf (buf, "elt%u...elt%u: ", i, j);
                print_node (file, buf, VECTOR_CST_ELT (node, i), indent + 4);
+               i = j;
              }
          }
          break;
@@ -869,8 +879,14 @@ print_node (FILE *file, const char *prefix, tree node, int indent)
 
        case SSA_NAME:
          print_node_brief (file, "var", SSA_NAME_VAR (node), indent + 4);
+         indent_to (file, indent + 4);
          fprintf (file, "def_stmt ");
-         print_gimple_stmt (file, SSA_NAME_DEF_STMT (node), indent + 4, 0);
+         {
+           pretty_printer buffer;
+           buffer.buffer->stream = file;
+           pp_gimple_stmt_1 (&buffer, SSA_NAME_DEF_STMT (node), indent + 4, 0);
+           pp_flush (&buffer);
+         }
 
          indent_to (file, indent + 4);
          fprintf (file, "version %u", SSA_NAME_VERSION (node));