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function.h (struct function): Add x_dont_save_pending_sizes_p.

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* function.h (struct function): Add x_dont_save_pending_sizes_p.
	* stor-layout.c (variable_size): Don't add sizes to the pending
	sizes list if x_dont_save_pending_sizes_p is set.

From-SVN: r29668
This commit is contained in:
Mark Mitchell 1999-09-26 18:13:28 +00:00
parent f0305a2b79
commit d43163b742
2 changed files with 13 additions and 0 deletions
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9
gcc/function.h
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@ -299,6 +299,15 @@ struct function
commences. */
int x_whole_function_mode_p;
/* Nonzero if the back-end should not keep track of expressions that
determine the size of variable-sized objects. Normally, such
expressions are saved away, and then expanded when the next
function is started. For example, if a parameter has a
variable-sized type, then the size of the parameter is computed
when the function body is entered. However, some front-ends do
not desire this behavior. */
int x_dont_save_pending_sizes_p;
/* List (chain of TREE_LIST) of LABEL_DECLs for all nonlocal labels
(labels to which there can be nonlocal gotos from nested functions)
in this function. */

4
gcc/stor-layout.c
View File

@ -112,6 +112,10 @@ variable_size (size)
Also, we would like to pass const0_rtx here, but don't have it. */
expand_expr (size, expand_expr (integer_zero_node, NULL_PTR, VOIDmode, 0),
VOIDmode, 0);
else if (current_function && current_function->x_dont_save_pending_sizes_p)
/* The front-end doesn't want us to keep a list of the expressions
that determine sizes for variable size objects. */
;
else
pending_sizes = tree_cons (NULL_TREE, size, pending_sizes);