re PR tree-optimization/48762 (valgrind: Invalid read/write of size 8 in…

re PR tree-optimization/48762 (valgrind: Invalid read/write of size 8 in cse_main with -O --param max-cse-path-length=0 on basic code)

	PR tree-optimization/48762
	* params.def (PARAM_MAX_CSE_INSNS): Increase the minimum
	value to 1.

From-SVN: r197637

gcc/ChangeLog

+2013-04-09  Marek Polacek  <polacek@redhat.com>
+
+	PR tree-optimization/48762
+	* params.def (PARAM_MAX_CSE_INSNS): Increase the minimum
+	value to 1.
+
 2013-04-09  Richard Biener  <rguenther@suse.de>
 
 	* tree-vect-slp.c (vect_get_and_check_slp_defs): Remove code

gcc/params.def

@@ -451,7 +451,7 @@ DEFPARAM(PARAM_MAX_GOTO_DUPLICATION_INSNS,
 DEFPARAM(PARAM_MAX_CSE_PATH_LENGTH,
 	 "max-cse-path-length",
 	 "The maximum length of path considered in cse",
-	 10, 0, 0)
+	 10, 1, 0)
 DEFPARAM(PARAM_MAX_CSE_INSNS,
 	 "max-cse-insns",
 	 "The maximum instructions CSE process before flushing",