Add -fdump*-folding suboption.

2017-05-25  Martin Liska  <mliska@suse.cz>

	* dumpfile.c: Add TDF_FOLDING.
	* dumpfile.h (enum dump_kind): Likewise.
	* genmatch.c (dt_simplify::gen_1): Use it.

From-SVN: r248452

gcc/ChangeLog

+2017-05-25  Martin Liska  <mliska@suse.cz>
+
+	* dumpfile.c: Add TDF_FOLDING.
+	* dumpfile.h (enum dump_kind): Likewise.
+	* genmatch.c (dt_simplify::gen_1): Use it.
+
 2017-05-25  Marc Glisse  <marc.glisse@inria.fr>
 
 	* match.pd (view_convert (convert@0 @1)): Handle zero-extension.

gcc/dumpfile.c

@@ -118,6 +118,7 @@ static const struct dump_option_value_info dump_options[] =
   {"enumerate_locals", TDF_ENUMERATE_LOCALS},
   {"scev", TDF_SCEV},
   {"gimple", TDF_GIMPLE},
+  {"folding", TDF_FOLDING},
   {"optimized", MSG_OPTIMIZED_LOCATIONS},
   {"missed", MSG_MISSED_OPTIMIZATION},
   {"note", MSG_NOTE},

gcc/dumpfile.h

@@ -92,6 +92,7 @@ enum dump_kind
 #define TDF_SCEV	(1 << 24)	/* Dump SCEV details.  */
 #define TDF_COMMENT	(1 << 25)	/* Dump lines with prefix ";;"  */
 #define TDF_GIMPLE	(1 << 26)	/* Dump in GIMPLE FE syntax  */
+#define TDF_FOLDING	(1 << 27)	/* Dump folding details.  */
 #define MSG_OPTIMIZED_LOCATIONS	 (1 << 27)  /* -fopt-info optimized sources */
 #define MSG_MISSED_OPTIMIZATION	 (1 << 28)  /* missed opportunities */
 #define MSG_NOTE		 (1 << 29)  /* general optimization info */

gcc/genmatch.c

@@ -3191,7 +3191,7 @@ dt_simplify::gen_1 (FILE *f, int indent, bool gimple, operand *result)
 	}
     }
 
-  fprintf_indent (f, indent, "if (dump_file && (dump_flags & TDF_DETAILS)) "
+  fprintf_indent (f, indent, "if (dump_file && (dump_flags & TDF_FOLDING)) "
 	   "fprintf (dump_file, \"Applying pattern ");
   output_line_directive (f,
 			 result ? result->location : s->match->location, true);