fix get_expr_operands thinko

[Richard Henderson]

Blah.  I'd seen simd-[23].c fail yesterday, but because of sloppiness
on my part I assumed it was DannyB's, just because the same update/test
cycle did in fact bring in a (different) new failure from him.

Oh well, fixed now.


r~


        * tree-ssa-operands.c (get_expr_operands): Fix 2004-07-15
        switchification wrt CONSTRUCTOR.  Document the reason.

Index: tree-ssa-operands.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/tree-ssa-operands.c,v
retrieving revision 2.19
diff -c -p -d -r2.19 tree-ssa-operands.c
*** tree-ssa-operands.c	16 Jul 2004 21:13:03 -0000	2.19
--- tree-ssa-operands.c	16 Jul 2004 22:11:35 -0000
*************** get_expr_operands (tree stmt, tree *expr
*** 971,976 ****
--- 971,988 ----
        stmt_ann (stmt)->has_volatile_ops = true;
        return;
  
+     case CONSTRUCTOR:
+       {
+ 	/* General aggregate CONSTRUCTORs have been decomposed, but they
+ 	   are still in use as the COMPLEX_EXPR equivalent for vectors.  */
+ 
+ 	tree t;
+ 	for (t = TREE_OPERAND (expr, 0); t ; t = TREE_CHAIN (t))
+ 	  get_expr_operands (stmt, &TREE_VALUE (t), opf_none, prev_vops);
+ 
+ 	return;
+       }
+ 
      case TRUTH_NOT_EXPR:
      case BIT_FIELD_REF:
      do_unary:
*************** get_expr_operands (tree stmt, tree *expr
*** 1025,1031 ****
      case EXC_PTR_EXPR:
      case FILTER_EXPR:
      case LABEL_DECL:
-     case CONSTRUCTOR:
        /* Expressions that make no memory references.  */
        return;
  
--- 1037,1042 ----