PR rtl-opt/21528

[pf3gnuchains/gcc-fork.git] / gcc / expr.c

diff --git a/gcc/expr.c b/gcc/expr.c
index 5cb883a..8b75ed7 100644 (file)
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -6116,7 +6116,7 @@ expand_var (tree var)
       ? !TREE_ASM_WRITTEN (var)
       : !DECL_RTL_SET_P (var))
     {
-      if (TREE_CODE (var) == VAR_DECL && DECL_VALUE_EXPR (var))
+      if (TREE_CODE (var) == VAR_DECL && DECL_HAS_VALUE_EXPR_P (var))
        /* Should be ignored.  */;
       else if (lang_hooks.expand_decl (var))
        /* OK.  */;
@@ -6862,7 +6862,6 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
     case INDIRECT_REF:
       {
        tree exp1 = TREE_OPERAND (exp, 0);
-       tree orig;
 
        if (modifier != EXPAND_WRITE)
          {
@@ -6885,10 +6884,7 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
 
        temp = gen_rtx_MEM (mode, op0);
 
-       orig = REF_ORIGINAL (exp);
-       if (!orig)
-         orig = exp;
-       set_mem_attributes (temp, orig, 0);
+       set_mem_attributes (temp, exp, 0);
 
        /* Resolve the misalignment now, so that we don't have to remember
           to resolve it later.  Of course, this only works for reads.  */
@@ -6920,6 +6916,18 @@ expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
        return temp;
       }
 
+    case TARGET_MEM_REF:
+      {
+       struct mem_address addr;
+
+       get_address_description (exp, &addr);
+       op0 = addr_for_mem_ref (&addr, true);
+       op0 = memory_address (mode, op0);
+       temp = gen_rtx_MEM (mode, op0);
+       set_mem_attributes (temp, TMR_ORIGINAL (exp), 0);
+      }
+      return temp;
+
     case ARRAY_REF:
 
       {
@@ -8729,8 +8737,7 @@ do_store_flag (tree exp, rtx target, enum machine_mode mode, int only_cheap)
       if ((code == LT && integer_zerop (arg1))
          || (! only_cheap && code == GE && integer_zerop (arg1)))
        ;
-      else if (BRANCH_COST >= 0
-              && ! only_cheap && (code == NE || code == EQ)
+      else if (! only_cheap && (code == NE || code == EQ)
               && TREE_CODE (type) != REAL_TYPE
               && ((abs_optab->handlers[(int) operand_mode].insn_code
                    != CODE_FOR_nothing)