本文整理汇总了C++中double_int类的典型用法代码示例。如果您正苦于以下问题：C++ double_int类的具体用法？C++ double_int怎么用？C++ double_int使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了double_int类的8个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: add_elt_to_tree
static tree
add_elt_to_tree (tree expr, tree type, tree elt, double_int scale,
aff_tree *comb)
{
enum tree_code code;
tree type1 = type;
if (POINTER_TYPE_P (type))
type1 = sizetype;
scale = double_int_ext_for_comb (scale, comb);
elt = fold_convert (type1, elt);
if (scale.is_one ())
{
if (!expr)
return fold_convert (type, elt);
if (POINTER_TYPE_P (type))
return fold_build_pointer_plus (expr, elt);
return fold_build2 (PLUS_EXPR, type, expr, elt);
}
if (scale.is_minus_one ())
{
if (!expr)
return fold_convert (type, fold_build1 (NEGATE_EXPR, type1, elt));
if (POINTER_TYPE_P (type))
{
elt = fold_build1 (NEGATE_EXPR, type1, elt);
return fold_build_pointer_plus (expr, elt);
}
return fold_build2 (MINUS_EXPR, type, expr, elt);
}
if (!expr)
return fold_convert (type,
fold_build2 (MULT_EXPR, type1, elt,
double_int_to_tree (type1, scale)));
if (scale.is_negative ())
{
code = MINUS_EXPR;
scale = -scale;
}
else
code = PLUS_EXPR;
elt = fold_build2 (MULT_EXPR, type1, elt,
double_int_to_tree (type1, scale));
if (POINTER_TYPE_P (type))
{
if (code == MINUS_EXPR)
elt = fold_build1 (NEGATE_EXPR, type1, elt);
return fold_build_pointer_plus (expr, elt);
}
return fold_build2 (code, type, expr, elt);
}
开发者ID:MaddTheSane，项目名称:haiku-buildtools，代码行数:58，代码来源:tree-affine.c
示例2: aff_combination_scale
void
aff_combination_scale (aff_tree *comb, double_int scale)
{
unsigned i, j;
scale = double_int_ext_for_comb (scale, comb);
if (scale.is_one ())
return;
if (scale.is_zero ())
{
aff_combination_zero (comb, comb->type);
return;
}
comb->offset
= double_int_ext_for_comb (scale * comb->offset, comb);
for (i = 0, j = 0; i < comb->n; i++)
{
double_int new_coef;
new_coef
= double_int_ext_for_comb (scale * comb->elts[i].coef, comb);
/* A coefficient may become zero due to overflow. Remove the zero
elements. */
if (new_coef.is_zero ())
continue;
comb->elts[j].coef = new_coef;
comb->elts[j].val = comb->elts[i].val;
j++;
}
comb->n = j;
if (comb->rest)
{
tree type = comb->type;
if (POINTER_TYPE_P (type))
type = sizetype;
if (comb->n < MAX_AFF_ELTS)
{
comb->elts[comb->n].coef = scale;
comb->elts[comb->n].val = comb->rest;
comb->rest = NULL_TREE;
comb->n++;
}
else
comb->rest = fold_build2 (MULT_EXPR, type, comb->rest,
double_int_to_tree (type, scale));
}
}
开发者ID:MaddTheSane，项目名称:haiku-buildtools，代码行数:50，代码来源:tree-affine.c
示例3: fixed_saturate1
static bool
fixed_saturate1 (machine_mode mode, double_int a, double_int *f,
bool sat_p)
{
bool overflow_p = false;
bool unsigned_p = UNSIGNED_FIXED_POINT_MODE_P (mode);
int i_f_bits = GET_MODE_IBIT (mode) + GET_MODE_FBIT (mode);
if (unsigned_p) /* Unsigned type. */
{
double_int max;
max.low = -1;
max.high = -1;
max = max.zext (i_f_bits);
if (a.ugt (max))
{
if (sat_p)
*f = max;
else
overflow_p = true;
}
}
else /* Signed type. */
{
double_int max, min;
max.high = -1;
max.low = -1;
max = max.zext (i_f_bits);
min.high = 0;
min.low = 1;
min = min.alshift (i_f_bits, HOST_BITS_PER_DOUBLE_INT);
min = min.sext (1 + i_f_bits);
if (a.sgt (max))
{
if (sat_p)
*f = max;
else
overflow_p = true;
}
else if (a.slt (min))
{
if (sat_p)
*f = min;
else
overflow_p = true;
}
}
return overflow_p;
}
开发者ID:gmarkall，项目名称:gcc，代码行数:49，代码来源:fixed-value.c
示例4: fixed_from_double_int
FIXED_VALUE_TYPE
fixed_from_double_int (double_int payload, machine_mode mode)
{
FIXED_VALUE_TYPE value;
gcc_assert (GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_DOUBLE_INT);
if (SIGNED_SCALAR_FIXED_POINT_MODE_P (mode))
value.data = payload.sext (1 + GET_MODE_IBIT (mode) + GET_MODE_FBIT (mode));
else if (UNSIGNED_SCALAR_FIXED_POINT_MODE_P (mode))
value.data = payload.zext (GET_MODE_IBIT (mode) + GET_MODE_FBIT (mode));
else
gcc_unreachable ();
value.mode = mode;
return value;
}
开发者ID:gmarkall，项目名称:gcc，代码行数:18，代码来源:fixed-value.c
示例5: set_range_info
void
set_range_info (tree name, enum value_range_type range_type, double_int min,
double_int max)
{
gcc_assert (!POINTER_TYPE_P (TREE_TYPE (name)));
gcc_assert (range_type == VR_RANGE || range_type == VR_ANTI_RANGE);
range_info_def *ri = SSA_NAME_RANGE_INFO (name);
/* Allocate if not available. */
if (ri == NULL)
{
ri = ggc_alloc_cleared_range_info_def ();
SSA_NAME_RANGE_INFO (name) = ri;
ri->nonzero_bits = double_int::mask (TYPE_PRECISION (TREE_TYPE (name)));
}
/* Record the range type. */
if (SSA_NAME_RANGE_TYPE (name) != range_type)
SSA_NAME_ANTI_RANGE_P (name) = (range_type == VR_ANTI_RANGE);
/* Set the values. */
ri->min = min;
ri->max = max;
/* If it is a range, try to improve nonzero_bits from the min/max. */
if (range_type == VR_RANGE)
{
int prec = TYPE_PRECISION (TREE_TYPE (name));
double_int xorv;
min = min.zext (prec);
max = max.zext (prec);
xorv = min ^ max;
if (xorv.high)
xorv = double_int::mask (2 * HOST_BITS_PER_WIDE_INT
- clz_hwi (xorv.high));
else if (xorv.low)
xorv = double_int::mask (HOST_BITS_PER_WIDE_INT
- clz_hwi (xorv.low));
ri->nonzero_bits = ri->nonzero_bits & (min | xorv);
}
}
开发者ID:ds2dev，项目名称:gcc，代码行数:42，代码来源:tree-ssanames.c
示例6: fixed_saturate2
static bool
fixed_saturate2 (machine_mode mode, double_int a_high, double_int a_low,
double_int *f, bool sat_p)
{
bool overflow_p = false;
bool unsigned_p = UNSIGNED_FIXED_POINT_MODE_P (mode);
int i_f_bits = GET_MODE_IBIT (mode) + GET_MODE_FBIT (mode);
if (unsigned_p) /* Unsigned type. */
{
double_int max_r, max_s;
max_r.high = 0;
max_r.low = 0;
max_s.high = -1;
max_s.low = -1;
max_s = max_s.zext (i_f_bits);
if (a_high.ugt (max_r)
|| (a_high == max_r &&
a_low.ugt (max_s)))
{
if (sat_p)
*f = max_s;
else
overflow_p = true;
}
}
else /* Signed type. */
{
double_int max_r, max_s, min_r, min_s;
max_r.high = 0;
max_r.low = 0;
max_s.high = -1;
max_s.low = -1;
max_s = max_s.zext (i_f_bits);
min_r.high = -1;
min_r.low = -1;
min_s.high = 0;
min_s.low = 1;
min_s = min_s.alshift (i_f_bits, HOST_BITS_PER_DOUBLE_INT);
min_s = min_s.sext (1 + i_f_bits);
if (a_high.sgt (max_r)
|| (a_high == max_r &&
a_low.ugt (max_s)))
{
if (sat_p)
*f = max_s;
else
overflow_p = true;
}
else if (a_high.slt (min_r)
|| (a_high == min_r &&
a_low.ult (min_s)))
{
if (sat_p)
*f = min_s;
else
overflow_p = true;
}
}
return overflow_p;
}
开发者ID:gmarkall，项目名称:gcc，代码行数:61，代码来源:fixed-value.c
示例7: double_int_ext_for_comb
double_int
double_int_ext_for_comb (double_int cst, aff_tree *comb)
{
return cst.sext (TYPE_PRECISION (comb->type));
}
开发者ID:MaddTheSane，项目名称:haiku-buildtools，代码行数:5，代码来源:tree-affine.c
示例8: aff_combination_add_elt
void
aff_combination_add_elt (aff_tree *comb, tree elt, double_int scale)
{
unsigned i;
tree type;
scale = double_int_ext_for_comb (scale, comb);
if (scale.is_zero ())
return;
for (i = 0; i < comb->n; i++)
if (operand_equal_p (comb->elts[i].val, elt, 0))
{
double_int new_coef;
new_coef = comb->elts[i].coef + scale;
new_coef = double_int_ext_for_comb (new_coef, comb);
if (!new_coef.is_zero ())
{
comb->elts[i].coef = new_coef;
return;
}
comb->n--;
comb->elts[i] = comb->elts[comb->n];
if (comb->rest)
{
gcc_assert (comb->n == MAX_AFF_ELTS - 1);
comb->elts[comb->n].coef = double_int_one;
comb->elts[comb->n].val = comb->rest;
comb->rest = NULL_TREE;
comb->n++;
}
return;
}
if (comb->n < MAX_AFF_ELTS)
{
comb->elts[comb->n].coef = scale;
comb->elts[comb->n].val = elt;
comb->n++;
return;
}
type = comb->type;
if (POINTER_TYPE_P (type))
type = sizetype;
if (scale.is_one ())
elt = fold_convert (type, elt);
else
elt = fold_build2 (MULT_EXPR, type,
fold_convert (type, elt),
double_int_to_tree (type, scale));
if (comb->rest)
comb->rest = fold_build2 (PLUS_EXPR, type, comb->rest,
elt);
else
comb->rest = elt;
}
开发者ID:MaddTheSane，项目名称:haiku-buildtools，代码行数:61，代码来源:tree-affine.c
注：本文中的double_int类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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