re PR bootstrap/44756 ([meta-bug] --enable-werror-always issues)

	PR bootstrap/44756
	* expr.c (can_store_by_pieces): Add ATTRIBUTE_UNUSED to cst.
	* haifa-sched.c (initiate_bb_reg_pressure_info): Add ATTRIBUTE_UNUSED
	to i.

From-SVN: r166366

gcc/ChangeLog

@@ -43,6 +43,11 @@
 	* expr.c (emit_push_insn): Cast value of PUSH_ROUNDING before
 	comparing it to a signed value.
 
+	PR bootstrap/44756
+	* expr.c (can_store_by_pieces): Add ATTRIBUTE_UNUSED to cst.
+	* haifa-sched.c (initiate_bb_reg_pressure_info): Add ATTRIBUTE_UNUSED
+	to i.
+
 2010-11-05  Jakub Jelinek  <jakub@redhat.com>
 
 	* cfgexpand.c (expand_debug_expr): Handle MEM_REF

gcc/expr.c

@@ -2261,7 +2261,8 @@ can_store_by_pieces (unsigned HOST_WIDE_INT len,
   enum machine_mode mode, tmode;
   enum insn_code icode;
   int reverse;
-  rtx cst;
+  /* cst is set but not used if LEGITIMATE_CONSTANT doesn't use it.  */
+  rtx cst ATTRIBUTE_UNUSED;
 
   if (len == 0)
     return 1;

gcc/haifa-sched.c

@@ -709,7 +709,7 @@ setup_ref_regs (rtx x)
 static void
 initiate_bb_reg_pressure_info (basic_block bb)
 {
-  unsigned int i;
+  unsigned int i ATTRIBUTE_UNUSED;
   rtx insn;
 
   if (current_nr_blocks > 1)