expr.c (try_casesi): Remove bogus ATTRIBUTE_UNUSED markers.

gcc/
	* expr.c (try_casesi): Remove bogus ATTRIBUTE_UNUSED markers.
	* stmt.c (dump_case_nodes): New.
	(expand_case): Split out code generation parts into new functions.
	(expand_switch_as_decision_tree_p): Split out from expand_case.
	(emit_case_decision_tree): Likewise.
	(emit_case_dispatch_table): Likewise.

testsuite/
	* gcc.c-torture/compile/20000326-1.c: Fix to not optimize to empty.

From-SVN: r189285

gcc/ChangeLog

+2012-07-05  Steven Bosscher  <steven@gcc.gnu.org>
+
+	* expr.c (try_casesi): Remove bogus ATTRIBUTE_UNUSED markers.
+	* stmt.c (dump_case_nodes): New.
+	(expand_case): Split out code generation parts into new functions.
+	(expand_switch_as_decision_tree_p): Split out from expand_case.
+	(emit_case_decision_tree): Likewise.
+	(emit_case_dispatch_table): Likewise.
+
 2012-07-05  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
 
 	* config/arm/iterators.md (SDF): New mode iterator.

gcc/expr.c

@@ -10850,8 +10850,7 @@ do_store_flag (sepops ops, rtx target, enum machine_mode mode)
    0 otherwise (i.e. if there is no casesi instruction).  */
 int
 try_casesi (tree index_type, tree index_expr, tree minval, tree range,
-	    rtx table_label ATTRIBUTE_UNUSED, rtx default_label,
-	    rtx fallback_label ATTRIBUTE_UNUSED)
+	    rtx table_label, rtx default_label, rtx fallback_label)
 {
   struct expand_operand ops[5];
   enum machine_mode index_mode = SImode;

gcc/testsuite/ChangeLog

+2012-07-05  Steven Bosscher  <steven@gcc.gnu.org>
+
+	* gcc.c-torture/compile/20000326-1.c: Fix to not optimize to empty.
+
 2012-07-05  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
 
 	* gcc.target/arm/fma-sp.c: New testcase.

gcc/testsuite/gcc.c-torture/compile/20000326-1.c

@@ -2,22 +2,21 @@ long sys_reboot(int magic1, int magic2, int cmd, void * arg)
 {
   switch (cmd) {
   case 0x89ABCDEF:
-    break;
+    return 1;
 
   case 0x00000000:
-    break;
+    return 2;
 
   case 0xCDEF0123:
-    break;
+    return 3;
 
   case 0x4321FEDC:
-    break;
+    return 4;
 
   case 0xA1B2C3D4:
-    break;
+    return 5;
 
   default:
-    break;
+    return 0;
   };
-  return 0;
 }