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langhooks-def.h (LANG_HOOKS_TYPE_MAX_SIZE): New langhook.

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* langhooks-def.h (LANG_HOOKS_TYPE_MAX_SIZE): New langhook.
	* langhooks.h (strct lang_hooks): New field type_max_size.
	* function.c (assign_temp): Call it.

From-SVN: r84053
This commit is contained in:
Richard Kenner 2004-07-03 13:40:47 +00:00 committed by Richard Kenner
parent 52c27e16fd
commit e30bb772cb
4 changed files with 20 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2004-07-03 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* langhooks-def.h (LANG_HOOKS_TYPE_MAX_SIZE): New langhook.
* langhooks.h (strct lang_hooks): New field type_max_size.
* function.c (assign_temp): Call it.
2004-07-03 Steven Bosscher <stevenb@suse.de>
* config/sh/sh.c (sh_use_dfa_interface): Add TARGET_SH1.

8
gcc/function.c
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@ -914,6 +914,7 @@ assign_temp (tree type_or_decl, int keep, int memory_required,
if (mode == BLKmode || memory_required)
{
HOST_WIDE_INT size = int_size_in_bytes (type);
tree size_tree;
rtx tmp;
/* Zero sized arrays are GNU C extension. Set size to 1 to avoid
@ -930,6 +931,13 @@ assign_temp (tree type_or_decl, int keep, int memory_required,
&& host_integerp (TYPE_ARRAY_MAX_SIZE (type), 1))
size = tree_low_cst (TYPE_ARRAY_MAX_SIZE (type), 1);
/* If we still haven't been able to get a size, see if the language
can compute a maximum size. */
if (size == -1
&& (size_tree = lang_hooks.type_max_size (type)) != 0
&& host_integerp (size_tree, 1))
size = tree_low_cst (size_tree, 1);
/* The size of the temporary may be too large to fit into an integer. */
/* ??? Not sure this should happen except for user silliness, so limit
this to things that aren't compiler-generated temporaries. The

2
gcc/langhooks-def.h
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@ -127,6 +127,7 @@ extern int lhd_gimplify_expr (tree *, tree *, tree *);
#define LANG_HOOKS_DECL_PRINTABLE_NAME lhd_decl_printable_name
#define LANG_HOOKS_GET_CALLEE_FNDECL lhd_return_null_tree
#define LANG_HOOKS_EXPR_SIZE lhd_expr_size
#define LANG_HOOKS_TYPE_MAX_SIZE lhd_return_null_tree
#define LANG_HOOKS_TREE_SIZE lhd_tree_size
#define LANG_HOOKS_TYPES_COMPATIBLE_P lhd_types_compatible_p
#define LANG_HOOKS_UPDATE_DECL_AFTER_SAVING NULL
@ -305,6 +306,7 @@ extern tree lhd_make_node (enum tree_code);
LANG_HOOKS_GET_CALLEE_FNDECL, \
LANG_HOOKS_PRINT_ERROR_FUNCTION, \
LANG_HOOKS_EXPR_SIZE, \
LANG_HOOKS_TYPE_MAX_SIZE, \
LANG_HOOKS_UPDATE_DECL_AFTER_SAVING, \
LANG_HOOKS_ATTRIBUTE_TABLE, \
LANG_HOOKS_COMMON_ATTRIBUTE_TABLE, \

4
gcc/langhooks.h
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@ -390,6 +390,10 @@ struct lang_hooks
semantics in cases that it doesn't want to handle specially. */
tree (*expr_size) (tree);
/* Called from assign_temp to return the maximum size, if there is one,
for a type. */
tree (*type_max_size) PARAMS ((tree));
/* Update lang specific fields after duplicating function body. */
void (*update_decl_after_saving) (tree, void *);