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optimize.c (copy_body_r): Use STRIP_TYPE_NOPS when copying variables.

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* optimize.c (copy_body_r): Use STRIP_TYPE_NOPS when copying
	variables.
	(initialize_inlined_parameters): Try to avoid creating new
	VAR_DECLs.

From-SVN: r33505
This commit is contained in:
Mark Mitchell 2000-04-28 06:40:28 +00:00 committed by Mark Mitchell
parent 26026d3803
commit 27c58e25f7
2 changed files with 40 additions and 1 deletions
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7
gcc/cp/ChangeLog
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@ -1,3 +1,10 @@
2000-04-27 Mark Mitchell <mark@codesourcery.com>
* optimize.c (copy_body_r): Use STRIP_TYPE_NOPS when copying
variables.
(initialize_inlined_parameters): Try to avoid creating new
VAR_DECLs.
2000-04-27 Alex Samuel <samuel@codesourcery.com>
* lex.c (my_get_run_time): Remove.

34
gcc/cp/optimize.c
View File

@ -306,6 +306,7 @@ copy_body_r (tp, walk_subtrees, data)
new_decl = remap_decl (*tp, id);
my_friendly_assert (new_decl != NULL_TREE, 19991203);
/* Replace this variable with the copy. */
STRIP_TYPE_NOPS (new_decl);
*tp = new_decl;
}
else if (nonstatic_local_decl_p (*tp)
@ -384,7 +385,38 @@ initialize_inlined_parameters (id, args, fn)
{
tree init_stmt;
tree var;
tree value;
/* Find the initializer. */
value = TREE_VALUE (a);
/* If the parameter is never assigned to, we may not need to
create a new variable here at all. Instead, we may be able
to just use the argument value. */
if (TREE_READONLY (p) && !TREE_SIDE_EFFECTS (value))
{
/* Simplify the value, if possible. */
value = fold (decl_constant_value (value));
/* We can't risk substituting complex expressions. They
might contain variables that will be assigned to later.
Theoretically, we could check the expression to see if
all of the variables that determine its value are
read-only, but we don't bother. */
if (TREE_CONSTANT (value) || TREE_READONLY_DECL_P (value))
{
/* If this is a declaration, wrap it a NOP_EXPR so that
we don't try to put the VALUE on the list of
BLOCK_VARS. */
if (DECL_P (value))
value = build1 (NOP_EXPR, TREE_TYPE (value), value);
splay_tree_insert (id->decl_map,
(splay_tree_key) p,
(splay_tree_value) value);
continue;
}
}
/* Make an equivalent VAR_DECL. */
var = copy_decl_for_inlining (p, fn, VARRAY_TREE (id->fns, 0));
/* Register the VAR_DECL as the equivalent for the PARM_DECL;
@ -400,7 +432,7 @@ initialize_inlined_parameters (id, args, fn)
object will be constructed in VAR. */
init_stmt = build_min_nt (EXPR_STMT,
build (INIT_EXPR, TREE_TYPE (p),
var, TREE_VALUE (a)));
var, value));
/* Declare this new variable. Note that we do this *after* the
initialization because we are going to reverse all the
initialization statements below. */