re-apply fold_indirect_ref patch

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@95024 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 18 insertions, 13 deletions

diff --git a/gcc/gimplify.c b/gcc/gimplify.c
index 0fd39436325..d461d776ee8 100644
--- a/gcc/gimplify.c
+++ b/gcc/gimplify.c
@@ -1433,8 +1433,15 @@ gimplify_compound_lval (tree *expr_p, tree *pre_p,
   VARRAY_GENERIC_PTR_NOGC_INIT (stack, 10, "stack");
 
   /* We can handle anything that get_inner_reference can deal with.  */
-  for (p = expr_p; handled_component_p (*p); p = &TREE_OPERAND (*p, 0))
-    VARRAY_PUSH_GENERIC_PTR_NOGC (stack, *p);
+  for (p = expr_p; ; p = &TREE_OPERAND (*p, 0))
+    {
+      /* Fold INDIRECT_REFs now to turn them into ARRAY_REFs.  */
+      if (TREE_CODE (*p) == INDIRECT_REF)
+	*p = fold_indirect_ref (*p);
+      if (!handled_component_p (*p))
+	break;
+      VARRAY_PUSH_GENERIC_PTR_NOGC (stack, *p);
+    }
 
   gcc_assert (VARRAY_ACTIVE_SIZE (stack));
 
@@ -2845,16 +2852,10 @@ gimplify_modify_expr_rhs (tree *expr_p, tree *from_p, tree *to_p, tree *pre_p,
 	     This kind of code arises in C++ when an object is bound
 	     to a const reference, and if "x" is a TARGET_EXPR we want
 	     to take advantage of the optimization below.  */
-	  tree pointer;
-
-	  pointer = TREE_OPERAND (*from_p, 0);
-	  STRIP_NOPS (pointer);
-	  if (TREE_CODE (pointer) == ADDR_EXPR
-	      && (lang_hooks.types_compatible_p 
-		  (TREE_TYPE (TREE_OPERAND (pointer, 0)),
-		   TREE_TYPE (*from_p))))
+	  tree t = fold_indirect_ref (*from_p);
+	  if (t != *from_p)
 	    {
-	      *from_p = TREE_OPERAND (pointer, 0); 
+	      *from_p = t;
 	      ret = GS_OK;
 	    }
 	  else
@@ -3544,7 +3545,7 @@ gimplify_target_expr (tree *expr_p, tree *pre_p, tree *post_p)
 	  ret = GS_OK;
           if (TREE_CODE (init) == BIND_EXPR)
 	    gimplify_bind_expr (&init, temp, pre_p);
-          if (init != temp)
+	  if (init != temp)
 	    {
 	      init = build (MODIFY_EXPR, void_type_node, temp, init);
 	      ret = gimplify_expr (&init, pre_p, post_p, is_gimple_stmt,
@@ -3795,9 +3796,13 @@ gimplify_expr (tree *expr_p, tree *pre_p, tree *post_p,
 	  recalculate_side_effects (*expr_p);
 	  break;
 
+	case INDIRECT_REF:
+	  *expr_p = fold_indirect_ref (*expr_p);
+	  if (*expr_p != save_expr)
+	    break;
+	  /* else fall through.  */
 	case ALIGN_INDIRECT_REF:
 	case MISALIGNED_INDIRECT_REF:
-	case INDIRECT_REF:
 	  ret = gimplify_expr (&TREE_OPERAND (*expr_p, 0), pre_p, post_p,
 			       is_gimple_reg, fb_rvalue);
 	  recalculate_side_effects (*expr_p);