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cp-tree.h (build_target_expr): New function. 

* cp-tree.h (build_target_expr): New function.
	* call.c (build_conditional_expr): Use build_target_expr.
	(convert_like): Likewise.
	(build_over_call): Likewise.
	* cvt.c (build_up_reference): Likewise.
	* decl.c (build_cleanup_on_safe_obstack): Fold into ...
	(destroy_local_var): Here.
	(build_target_expr): New function.
	* tree.c (build_cplus_new): Use it.
	(get_target_expr): Likewise.

From-SVN: r29387
This commit is contained in:
Mark Mitchell 1999-09-14 00:50:07 +00:00 committed by Mark Mitchell
parent 88731f16b0
commit 9d85d30c20
6 changed files with 51 additions and 52 deletions
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13
gcc/cp/ChangeLog
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@ -1,3 +1,16 @@
1999-09-13 Mark Mitchell <mark@codesourcery.com>
* cp-tree.h (build_target_expr): New function.
* call.c (build_conditional_expr): Use build_target_expr.
(convert_like): Likewise.
(build_over_call): Likewise.
* cvt.c (build_up_reference): Likewise.
* decl.c (build_cleanup_on_safe_obstack): Fold into ...
(destroy_local_var): Here.
(build_target_expr): New function.
* tree.c (build_cplus_new): Use it.
(get_target_expr): Likewise.
1999-09-13 Nathan Sidwell <nathan@acm.org>
* typeck.c (expr_sizeof): Don't decay arrays and functions.

8
gcc/cp/call.c
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@ -3080,8 +3080,7 @@ build_conditional_expr (arg1, arg2, arg3)
{
tree slot = build (VAR_DECL, result_type);
layout_decl (slot, 0);
result = build (TARGET_EXPR, result_type,
slot, result, NULL_TREE, NULL_TREE);
result = build_target_expr (slot, result);
}
/* If this expression is an rvalue, but might be mistaken for an
@ -3749,8 +3748,7 @@ convert_like (convs, expr)
tree type = TREE_TYPE (TREE_OPERAND (convs, 0));
tree slot = build_decl (VAR_DECL, NULL_TREE, type);
DECL_ARTIFICIAL (slot) = 1;
expr = build (TARGET_EXPR, type, slot, expr,
NULL_TREE, NULL_TREE);
expr = build_target_expr (slot, expr);
TREE_SIDE_EFFECTS (expr) = 1;
}
@ -4039,7 +4037,7 @@ build_over_call (cand, args, flags)
else if (TYPE_HAS_TRIVIAL_INIT_REF (DECL_CONTEXT (fn)))
{
val = build_decl (VAR_DECL, NULL_TREE, DECL_CONTEXT (fn));
val = build (TARGET_EXPR, DECL_CONTEXT (fn), val, arg, 0, 0);
val = build_target_expr (val, arg);
TREE_SIDE_EFFECTS (val) = 1;
return val;
}

1
gcc/cp/cp-tree.h
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@ -3247,6 +3247,7 @@ extern tree cp_namespace_decls PROTO((tree));
extern tree create_implicit_typedef PROTO((tree, tree));
extern tree maybe_push_decl PROTO((tree));
extern void emit_local_var PROTO((tree));
extern tree build_target_expr PROTO((tree, tree));
/* in decl2.c */
extern void init_decl2 PROTO((void));

2
gcc/cp/cvt.c
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@ -364,7 +364,7 @@ build_up_reference (type, arg, flags)
{
tree slot = build_decl (VAR_DECL, NULL_TREE, argtype);
DECL_ARTIFICIAL (slot) = 1;
arg = build (TARGET_EXPR, argtype, slot, arg, NULL_TREE, NULL_TREE);
arg = build_target_expr (slot, arg);
TREE_SIDE_EFFECTS (arg) = 1;
}

74
gcc/cp/decl.c
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@ -169,7 +169,6 @@ static void pop_labels PROTO((tree));
static void maybe_deduce_size_from_array_init PROTO((tree, tree));
static tree layout_var_decl PROTO((tree, tree));
static void maybe_commonize_var PROTO((tree));
static tree build_cleanup_on_safe_obstack PROTO((tree));
static tree check_initializer PROTO((tree, tree));
static void make_rtl_for_nonlocal_decl PROTO((tree, tree, const char *));
static void push_cp_function_context PROTO((struct function *));
@ -7121,47 +7120,6 @@ layout_var_decl (decl, init)
return init;
}
/* Return a cleanup for DECL, created on whatever obstack is
appropriate. */
static tree
build_cleanup_on_safe_obstack (decl)
tree decl;
{
tree cleanup;
tree type;
int need_pop;
type = TREE_TYPE (decl);
/* Only variables get cleaned up. */
if (TREE_CODE (decl) != VAR_DECL)
return NULL_TREE;
/* And only things with destructors need cleaning up. */
if (!TYPE_NEEDS_DESTRUCTOR (type))
return NULL_TREE;
if (TREE_CODE (decl) == VAR_DECL &&
(DECL_EXTERNAL (decl) || TREE_STATIC (decl)))
/* We don't clean up things that aren't defined in this
translation unit, or that need a static cleanup. The latter
are handled by finish_file. */
return NULL_TREE;
/* Switch to an obstack that will live until the point where the
cleanup code is actually expanded. */
need_pop = suspend_momentary ();
/* Compute the cleanup. */
cleanup = maybe_build_cleanup (decl);
/* Pop back to the obstack we were on before. */
resume_momentary (need_pop);
return cleanup;
}
/* If a local static variable is declared in an inline function, or if
we have a weak definition, we must endeavor to create only one
instance of the variable at link-time. */
@ -7557,7 +7515,26 @@ void
destroy_local_var (decl)
tree decl;
{
tree cleanup = build_cleanup_on_safe_obstack (decl);
tree type = TREE_TYPE (decl);
tree cleanup;
/* Only variables get cleaned up. */
if (TREE_CODE (decl) != VAR_DECL)
return;
/* And only things with destructors need cleaning up. */
if (!TYPE_NEEDS_DESTRUCTOR (type))
return;
if (TREE_CODE (decl) == VAR_DECL &&
(DECL_EXTERNAL (decl) || TREE_STATIC (decl)))
/* We don't clean up things that aren't defined in this
translation unit, or that need a static cleanup. The latter
are handled by finish_file. */
return;
/* Compute the cleanup. */
cleanup = maybe_build_cleanup (decl);
/* Record the cleanup required for this declaration. */
if (DECL_SIZE (decl) && TREE_TYPE (decl) != error_mark_node
@ -14143,6 +14120,17 @@ maybe_build_cleanup_1 (decl, auto_delete)
return 0;
}
/* Build a TARGET_EXPR, initializing the DECL with the VALUE. */
tree
build_target_expr (decl, value)
tree decl;
tree value;
{
return build (TARGET_EXPR, TREE_TYPE (decl), decl, value,
maybe_build_cleanup (decl), NULL_TREE);
}
/* If DECL is of a type which needs a cleanup, build that cleanup
here. The cleanup does free the storage with a call to delete. */

5
gcc/cp/tree.c
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@ -251,7 +251,7 @@ build_cplus_new (type, init)
= (TREE_CODE (fn) == ADDR_EXPR
&& TREE_CODE (TREE_OPERAND (fn, 0)) == FUNCTION_DECL
&& DECL_CONSTRUCTOR_P (TREE_OPERAND (fn, 0)));
rval = build (TARGET_EXPR, type, slot, rval, NULL_TREE, NULL_TREE);
rval = build_target_expr (slot, rval);
TREE_SIDE_EFFECTS (rval) = 1;
return rval;
@ -269,8 +269,7 @@ get_target_expr (init)
slot = build (VAR_DECL, TREE_TYPE (init));
DECL_ARTIFICIAL (slot) = 1;
layout_decl (slot, 0);
rval = build (TARGET_EXPR, TREE_TYPE (init), slot, init,
NULL_TREE, NULL_TREE);
rval = build_target_expr (slot, init);
TREE_SIDE_EFFECTS (rval) = 1;
return rval;