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gimple-fold.c (strlen_range_kind): Remove SRK_LENRANGE_2. 

* gimple-fold.c (strlen_range_kind): Remove SRK_LENRANGE_2.
	(get_range_strlen_tree): Update appropriately.
	(get_range_strlen)
	* gimple-fold.h (get_range_strlen): Drop unused last argument.

Co-Authored-By: Jeff Law <law@redhat.com>

From-SVN: r267537
This commit is contained in:
Martin Sebor 2019-01-02 23:59:51 +00:00 committed by Jeff Law
parent fbf3e66ffc
commit 84de9426df
3 changed files with 13 additions and 12 deletions
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4
gcc/ChangeLog
View File

@ -1,6 +1,10 @@
2019-01-02 Martin Sebor <msebor@redhat.com>
Jeff Law <law@redhat.com>
* gimple-fold.c (strlen_range_kind): Remove SRK_LENRANGE_2.
(get_range_strlen_tree): Update appropriately.
(get_range_strlen)
* gimple-fold.h (get_range_strlen): Drop unused last argument.
* gimple-fold.c (gimple_fold_builtin_strlen): Use set_strlen_range
rather than set_range_info.

19
gcc/gimple-fold.c
View File

@ -77,8 +77,6 @@ enum strlen_range_kind {
or element of. Also determine the size of the largest character
array the string may refer to. */
SRK_LENRANGE,
/* Temporary until the rest of Martin's strlen range work is integrated. */
SRK_LENRANGE_2,
/* Determine the integer value of the argument (not string length). */
SRK_INT_VALUE
};
@ -1309,7 +1307,7 @@ get_range_strlen_tree (tree arg, bitmap *visited, strlen_range_kind rkind,
pdata, eltsize);
}
else if (TREE_CODE (TREE_OPERAND (op, 0)) == COMPONENT_REF
&& (rkind == SRK_LENRANGE || rkind == SRK_LENRANGE_2))
&& rkind == SRK_LENRANGE)
{
/* Fail if an array is the last member of a struct object
since it could be treated as a (fake) flexible array
@ -1349,7 +1347,7 @@ get_range_strlen_tree (tree arg, bitmap *visited, strlen_range_kind rkind,
}
}
if (!val && (rkind == SRK_LENRANGE || rkind == SRK_LENRANGE_2))
if (!val && rkind == SRK_LENRANGE)
{
if (TREE_CODE (arg) == ADDR_EXPR)
return get_range_strlen (TREE_OPERAND (arg, 0), visited, rkind,
@ -1484,7 +1482,7 @@ get_range_strlen_tree (tree arg, bitmap *visited, strlen_range_kind rkind,
on the length of the string based on the referenced object's
or subobject's type. Determine the conservative upper bound
based on the enclosing object's size if possible. */
if (rkind == SRK_LENRANGE || rkind == SRK_LENRANGE_2)
if (rkind == SRK_LENRANGE)
{
poly_int64 offset;
tree base = get_addr_base_and_unit_offset (arg, &offset);
@ -1538,7 +1536,7 @@ get_range_strlen_tree (tree arg, bitmap *visited, strlen_range_kind rkind,
}
pdata->maxlen = val;
return rkind == SRK_LENRANGE || rkind == SRK_LENRANGE_2 || !integer_all_onesp (val);
return rkind == SRK_LENRANGE || !integer_all_onesp (val);
}
/* For an ARG referencing one or more strings, try to obtain the range
@ -1600,7 +1598,7 @@ get_range_strlen (tree arg, bitmap *visited,
for (unsigned int i = 0; i < 2; i++)
if (!get_range_strlen (ops[i], visited, rkind, pdata, eltsize))
{
if (rkind != SRK_LENRANGE_2)
if (rkind != SRK_LENRANGE)
return false;
/* Set the upper bound to the maximum to prevent
it from being adjusted in the next iteration but
@ -1634,7 +1632,7 @@ get_range_strlen (tree arg, bitmap *visited,
if (!get_range_strlen (arg, visited, rkind, pdata, eltsize))
{
if (rkind != SRK_LENRANGE_2)
if (rkind != SRK_LENRANGE)
return false;
/* Set the upper bound to the maximum to prevent
it from being adjusted in the next iteration but
@ -1680,12 +1678,11 @@ get_range_strlen (tree arg, bitmap *visited,
4 for wide characer strings. ELTSIZE is by default 1. */
bool
get_range_strlen (tree arg, c_strlen_data *pdata, unsigned eltsize, bool strict)
get_range_strlen (tree arg, c_strlen_data *pdata, unsigned eltsize)
{
bitmap visited = NULL;
if (!get_range_strlen (arg, &visited, strict ? SRK_LENRANGE : SRK_LENRANGE_2,
pdata, eltsize))
if (!get_range_strlen (arg, &visited, SRK_LENRANGE, pdata, eltsize))
{
/* On failure extend the length range to an impossible maximum
(a valid MAXLEN must be less than PTRDIFF_MAX - 1). Other

2
gcc/gimple-fold.h
View File

@ -26,7 +26,7 @@ extern tree create_tmp_reg_or_ssa_name (tree, gimple *stmt = NULL);
extern tree canonicalize_constructor_val (tree, tree);
extern tree get_symbol_constant_value (tree);
struct c_strlen_data;
extern bool get_range_strlen (tree, c_strlen_data *, unsigned eltsize, bool = false);
extern bool get_range_strlen (tree, c_strlen_data *, unsigned eltsize);
extern void gimplify_and_update_call_from_tree (gimple_stmt_iterator *, tree);
extern bool fold_stmt (gimple_stmt_iterator *);
extern bool fold_stmt (gimple_stmt_iterator *, tree (*) (tree));