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builtins.c (expand_builtin_strncpy): Use integer_zerop instead of compare_tree_int.

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* builtins.c (expand_builtin_strncpy): Use integer_zerop instead
	of compare_tree_int.
	(expand_builtin_strncat): Likewise.
	* c-decl.c (finish_struct): Use tree_low_cst.
	* tree.h (compare_tree_int): Arg is unsigned HOST_WIDE_INT.
	* tree.c (compare_tree_int): Likewise.

From-SVN: r49222
This commit is contained in:
Richard Kenner 2002-01-25 15:45:48 -05:00
parent 75eefe3fe0
commit 995b590439
5 changed files with 26 additions and 16 deletions
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11
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
Fri Jan 25 08:26:19 2002 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* builtins.c (expand_builtin_strncpy): Use integer_zerop instead
of compare_tree_int.
(expand_builtin_strncat): Likewise.
* c-decl.c (finish_struct): Use tree_low_cst.
* tree.h (compare_tree_int): Arg is unsigned HOST_WIDE_INT.
* tree.c (compare_tree_int): Likewise.
2002-01-25 Ulrich Weigand <uweigand@de.ibm.com>
* reload1.c (eliminate_regs_in_insn): Recognize frame pointer
@ -5,7 +14,7 @@
Fri Jan 25 20:43:56 CET 2002 Jan Hubicka <jh@suse.cz>
* df.c (df_ref_create, df_ref_record_1, df_ref_record): Kill BB argument.
* df.c (df_ref_create, df_ref_record_1, df_ref_record): Kill BB arg.
* df.h (struct ref): Kill B.
(DF_REF_BB, DF_REF_BBNO): Use BLOCK_FOR_INSN.

15
gcc/builtins.c
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@ -2062,7 +2062,7 @@ expand_builtin_strncpy (arglist, target, mode)
return 0;
/* If the len parameter is zero, return the dst parameter. */
if (compare_tree_int (len, 0) == 0)
if (integer_zerop (len))
{
/* Evaluate and ignore the src argument in case it has
side-effects. */
@ -2279,10 +2279,11 @@ expand_builtin_memcmp (exp, arglist, target, mode)
/* If all arguments are constant, and the value of len is not greater
than the lengths of arg1 and arg2, evaluate at compile-time. */
if (host_integerp (len, 1) && p1 && p2
&& compare_tree_int (len, strlen (p1)+1) <= 0
&& compare_tree_int (len, strlen (p2)+1) <= 0)
&& compare_tree_int (len, strlen (p1) + 1) <= 0
&& compare_tree_int (len, strlen (p2) + 1) <= 0)
{
const int r = memcmp (p1, p2, tree_low_cst (len, 1));
return (r < 0 ? constm1_rtx : (r > 0 ? const1_rtx : const0_rtx));
}
@ -2607,7 +2608,7 @@ expand_builtin_strncat (arglist, target, mode)
/* If the requested length is zero, or the src parameter string
length is zero, return the dst parameter. */
if ((TREE_CODE (len) == INTEGER_CST && compare_tree_int (len, 0) == 0)
if ((TREE_CODE (len) == INTEGER_CST && integer_zerop (len))
|| (p && *p == '\0'))
{
/* Evaluate and ignore the src and len parameters in case
@ -2622,9 +2623,9 @@ expand_builtin_strncat (arglist, target, mode)
if (TREE_CODE (len) == INTEGER_CST && p
&& compare_tree_int (len, strlen (p)) >= 0)
{
tree newarglist =
tree_cons (NULL_TREE, dst, build_tree_list (NULL_TREE, src)),
fn = built_in_decls[BUILT_IN_STRCAT];
tree newarglist
= tree_cons (NULL_TREE, dst, build_tree_list (NULL_TREE, src));
tree fn = built_in_decls[BUILT_IN_STRCAT];
/* If the replacement _DECL isn't initialized, don't do the
transformation. */

11
gcc/c-decl.c
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@ -5693,11 +5693,10 @@ finish_struct (t, fieldlist, attributes)
field widths. */
if (DECL_INITIAL (x))
{
int max_width;
if (TYPE_MAIN_VARIANT (TREE_TYPE (x)) == c_bool_type_node)
max_width = CHAR_TYPE_SIZE;
else
max_width = TYPE_PRECISION (TREE_TYPE (x));
int max_width
= (TYPE_MAIN_VARIANT (TREE_TYPE (x)) == c_bool_type_node
? CHAR_TYPE_SIZE : TYPE_PRECISION (TREE_TYPE (x)));
if (tree_int_cst_sgn (DECL_INITIAL (x)) < 0)
error_with_decl (x, "negative width in bit-field `%s'");
else if (0 < compare_tree_int (DECL_INITIAL (x), max_width))
@ -5708,7 +5707,7 @@ finish_struct (t, fieldlist, attributes)
{
/* The test above has assured us that TREE_INT_CST_HIGH is 0. */
unsigned HOST_WIDE_INT width
= TREE_INT_CST_LOW (DECL_INITIAL (x));
= tree_low_cst (DECL_INITIAL (x), 1);
if (TREE_CODE (TREE_TYPE (x)) == ENUMERAL_TYPE
&& (width < min_precision (TYPE_MIN_VALUE (TREE_TYPE (x)),

2
gcc/tree.c
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@ -3633,7 +3633,7 @@ simple_cst_equal (t1, t2)
int
compare_tree_int (t, u)
tree t;
unsigned int u;
unsigned HOST_WIDE_INT u;
{
if (tree_int_cst_sgn (t) < 0)
return -1;

3
gcc/tree.h
View File

@ -2888,7 +2888,8 @@ extern void preserve_data PARAMS ((void));
extern int object_permanent_p PARAMS ((tree));
extern int type_precision PARAMS ((tree));
extern int simple_cst_equal PARAMS ((tree, tree));
extern int compare_tree_int PARAMS ((tree, unsigned int));
extern int compare_tree_int PARAMS ((tree,
unsigned HOST_WIDE_INT));
extern int type_list_equal PARAMS ((tree, tree));
extern int chain_member PARAMS ((tree, tree));
extern int chain_member_purpose PARAMS ((tree, tree));