cpplex.c (parse_string): Don't look for backslash before first char in `namebuf'.

	* cpplex.c (parse_string): Don't look for backslash
	before first char in `namebuf'.
	* loop.c (strength_reduce): Skip NOTEs.

From-SVN: r36015

gcc/ChangeLog

+2000-08-27  Greg McGary  <greg@mcgary.org>
+
+	* cpplex.c (parse_string): Don't look for backslash
+	before first char in `namebuf'.
+	* loop.c (strength_reduce): Skip NOTEs.
+
 2000-08-27  Jason Merrill  <jason@redhat.com>
 
 	* c-decl.c (duplicate_decls): Don't set TREE_STATIC or clear

gcc/cpplex.c

@@ -1106,7 +1106,7 @@ parse_string (pfile, list, token, terminator)
 	  if (is_vspace (c))
 	    {
 	      /* Drop a backslash newline, and continue. */
-	      if (namebuf[-1] == '\\')
+	      if (namebuf > list->namebuf && namebuf[-1] == '\\')
 		{
 		  handle_newline (cur, buffer->rlimit, c);
 		  namebuf--;

gcc/loop.c

@@ -4188,8 +4188,9 @@ strength_reduce (loop, insn_count, flags)
 	      /* Some bivs are incremented with a multi-insn sequence.
 		 The first insn contains the add.  */
 	      next_loc_insn = next->insn;
-	      while (! loc_mentioned_in_p (next->location,
-					   PATTERN (next_loc_insn)))
+	      while (NOTE_P (next_loc_insn)
+		     || ! loc_mentioned_in_p (next->location,
+					      PATTERN (next_loc_insn)))
 		next_loc_insn = PREV_INSN (next_loc_insn);
 
 	      if (next_loc_insn == v->insn)