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Commit bcc12098 authored by Rostyslav Geyyer's avatar Rostyslav Geyyer
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Update pack/unpack methods

parent acf8854e
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Showing with 180 additions and 36 deletions
include/ck/utility/data_type.hpp
View file @ bcc12098
......@@ -51,15 +51,24 @@ struct f6x16_pk_t
template <index_t I>
__host__ __device__ inline f6_t unpack(Number<I>)
{
static_assert(I < 16, "Index is out of range.");
static_assert(I < 16, "Index out of range for 16 f6_t elements.");
union
constexpr int num_bits_elem = 6;
constexpr int num_bits_vec_elem = 32;
constexpr int vector_size = 3;
constexpr int bit_pos = I * num_bits_elem;
constexpr int arr_idx = bit_pos / num_bits_vec_elem;
constexpr int bit_offset = bit_pos % num_bits_vec_elem;
uint32_t bits = data.At(Number<arr_idx>{}) >> bit_offset;
constexpr int overhang = bit_offset + num_bits_elem - num_bits_vec_elem;
if constexpr(overhang > 0 && (arr_idx + 1) < vector_size)
{
StaticallyIndexedArray_v2<element_type, 3> uint32_array;
f6_t f6_array[16];
} data_union{data};
bits |= (data.At(Number<arr_idx + 1>{}) & ((1u << overhang) - 1))
<< (num_bits_elem - overhang);
}
return data_union.f6_array[I];
return static_cast<f6_t>(bits & 0x3F);
}
// V is vector_size and E is number of elements
......@@ -68,14 +77,41 @@ struct f6x16_pk_t
{
static_assert(V == 1 || V == 2, "Vector size must be 1 or 2.");
static_assert(E == 16, "Number of elements must be 16.");
type* retval = reinterpret_cast<type*>(x);
return *retval;
type packed{};
// for each of the 16 f6_t values, place its 6 bits in the correct position
ck::static_for<0, 16, 1>{}([&](auto i) {
uint32_t bits = static_cast<uint32_t>(x[i]) & 0x3F;
constexpr int num_bits_elem = 6;
constexpr int num_bits_vec_elem = 32;
constexpr int vector_size = 3;
constexpr int bit_pos = i * num_bits_elem;
constexpr int arr_index = bit_pos / num_bits_vec_elem;
constexpr int bit_offset = bit_pos % num_bits_vec_elem;
constexpr int overhang = bit_offset + num_bits_elem - num_bits_vec_elem;
uint32_t old_value = packed.At(Number<arr_index>{});
// insert bits into the current 32-bit block
old_value |= (bits << bit_offset);
packed.At(Number<arr_index>{}) = old_value;
// if it crosses into the next block, shift the remainder
if constexpr(overhang > 0 && (arr_index + 1) < vector_size)
{
uint32_t next_value = packed.At(Number<arr_index + 1>{});
next_value |= (bits >> (num_bits_elem - overhang));
packed.At(Number<arr_index + 1>{}) = next_value;
}
});
return packed;
}
};
struct f6x32_pk_t
{
// store 16 elements of f6_t in an array of 6 uint32_t
// store 32 elements of f6_t in an array of 6 uint32_t
using element_type = uint32_t;
using type = StaticallyIndexedArray_v2<element_type, 6>;
type data;
......@@ -85,15 +121,24 @@ struct f6x32_pk_t
template <index_t I>
__host__ __device__ inline f6_t unpack(Number<I>)
{
static_assert(I < 32, "Index is out of range.");
static_assert(I < 32, "Index out of range for 32 f6_t elements.");
union
constexpr int num_bits_elem = 6;
constexpr int num_bits_vec_elem = 32;
constexpr int vector_size = 6;
constexpr int bit_pos = I * num_bits_elem;
constexpr int arr_idx = bit_pos / num_bits_vec_elem;
constexpr int bit_offset = bit_pos % num_bits_vec_elem;
uint32_t bits = data.At(Number<arr_idx>{}) >> bit_offset;
constexpr int overhang = bit_offset + num_bits_elem - num_bits_vec_elem;
if constexpr(overhang > 0 && (arr_idx + 1) < vector_size)
{
StaticallyIndexedArray_v2<element_type, 6> uint32_array;
f6_t f6_array[32];
} data_union{data};
bits |= (data.At(Number<arr_idx + 1>{}) & ((1u << overhang) - 1))
<< (num_bits_elem - overhang);
}
return data_union.f6_array[I];
return static_cast<f6_t>(bits & 0x3F);
}
// V is vector_size and E is number of elements
......@@ -101,9 +146,36 @@ struct f6x32_pk_t
__host__ __device__ inline type pack(f6_t* x)
{
static_assert(V == 1, "Vector size must be 1.");
static_assert(E == 32, "Number of elements must be 16.");
type* retval = reinterpret_cast<type*>(x);
return *retval;
static_assert(E == 32, "Number of elements must be 32.");
type packed{};
// for each of the 32 f6_t values, place its 6 bits in the correct position
ck::static_for<0, 32, 1>{}([&](auto i) {
uint32_t bits = static_cast<uint32_t>(x[i]) & 0x3F;
constexpr int num_bits_elem = 6;
constexpr int num_bits_vec_elem = 32;
constexpr int vector_size = 6;
constexpr int bit_pos = i * num_bits_elem;
constexpr int arr_index = bit_pos / num_bits_vec_elem;
constexpr int bit_offset = bit_pos % num_bits_vec_elem;
constexpr int overhang = bit_offset + num_bits_elem - num_bits_vec_elem;
uint32_t old_value = packed.At(Number<arr_index>{});
// insert bits into the current 32-bit block
old_value |= (bits << bit_offset);
packed.At(Number<arr_index>{}) = old_value;
// if it crosses into the next block, shift the remainder
if constexpr(overhang > 0 && (arr_index + 1) < vector_size)
{
uint32_t next_value = packed.At(Number<arr_index + 1>{});
next_value |= (bits >> (num_bits_elem - overhang));
packed.At(Number<arr_index + 1>{}) = next_value;
}
});
return packed;
}
};
......@@ -119,15 +191,24 @@ struct bf6x16_pk_t
template <index_t I>
__host__ __device__ inline bf6_t unpack(Number<I>)
{
static_assert(I < 16, "Index is out of range.");
static_assert(I < 16, "Index out of range for 16 f6_t elements.");
union
constexpr int num_bits_elem = 6;
constexpr int num_bits_vec_elem = 32;
constexpr int vector_size = 3;
constexpr int bit_pos = I * num_bits_elem;
constexpr int arr_idx = bit_pos / num_bits_vec_elem;
constexpr int bit_offset = bit_pos % num_bits_vec_elem;
uint32_t bits = data.At(Number<arr_idx>{}) >> bit_offset;
constexpr int overhang = bit_offset + num_bits_elem - num_bits_vec_elem;
if constexpr(overhang > 0 && (arr_idx + 1) < vector_size)
{
StaticallyIndexedArray_v2<element_type, 3> uint32_array;
bf6_t bf6_array[16];
} data_union{data};
bits |= (data.At(Number<arr_idx + 1>{}) & ((1u << overhang) - 1))
<< (num_bits_elem - overhang);
}
return data_union.bf6_array[I];
return static_cast<bf6_t>(bits & 0x3F);
}
// V is vector_size and E is number of elements
......@@ -136,14 +217,41 @@ struct bf6x16_pk_t
{
static_assert(V == 1 || V == 2, "Vector size must be 1 or 2.");
static_assert(E == 16, "Number of elements must be 16.");
type* retval = reinterpret_cast<type*>(x);
return *retval;
type packed{};
// for each of the 16 bf6_t values, place its 6 bits in the correct position
ck::static_for<0, 16, 1>{}([&](auto i) {
uint32_t bits = static_cast<uint32_t>(x[i]) & 0x3F;
constexpr int num_bits_elem = 6;
constexpr int num_bits_vec_elem = 32;
constexpr int vector_size = 3;
constexpr int bit_pos = i * num_bits_elem;
constexpr int arr_index = bit_pos / num_bits_vec_elem;
constexpr int bit_offset = bit_pos % num_bits_vec_elem;
constexpr int overhang = bit_offset + num_bits_elem - num_bits_vec_elem;
uint32_t old_value = packed.At(Number<arr_index>{});
// insert bits into the current 32-bit block
old_value |= (bits << bit_offset);
packed.At(Number<arr_index>{}) = old_value;
// if it crosses into the next block, shift the remainder
if constexpr(overhang > 0 && (arr_index + 1) < vector_size)
{
uint32_t next_value = packed.At(Number<arr_index + 1>{});
next_value |= (bits >> (num_bits_elem - overhang));
packed.At(Number<arr_index + 1>{}) = next_value;
}
});
return packed;
}
};
struct bf6x32_pk_t
{
// store 16 elements of bf6_t in an array of 6 uint32_t
// store 32 elements of bf6_t in an array of 6 uint32_t
using element_type = uint32_t;
using type = StaticallyIndexedArray_v2<element_type, 6>;
type data;
......@@ -153,15 +261,24 @@ struct bf6x32_pk_t
template <index_t I>
__host__ __device__ inline bf6_t unpack(Number<I>)
{
static_assert(I < 32, "Index is out of range.");
static_assert(I < 32, "Index out of range for 32 f6_t elements.");
union
constexpr int num_bits_elem = 6;
constexpr int num_bits_vec_elem = 32;
constexpr int vector_size = 6;
constexpr int bit_pos = I * num_bits_elem;
constexpr int arr_idx = bit_pos / num_bits_vec_elem;
constexpr int bit_offset = bit_pos % num_bits_vec_elem;
uint32_t bits = data.At(Number<arr_idx>{}) >> bit_offset;
constexpr int overhang = bit_offset + num_bits_elem - num_bits_vec_elem;
if constexpr(overhang > 0 && (arr_idx + 1) < vector_size)
{
StaticallyIndexedArray_v2<element_type, 6> uint32_array;
bf6_t bf6_array[32];
} data_union{data};
bits |= (data.At(Number<arr_idx + 1>{}) & ((1u << overhang) - 1))
<< (num_bits_elem - overhang);
}
return data_union.bf6_array[I];
return static_cast<bf6_t>(bits & 0x3F);
}
// V is vector_size and E is number of elements
......@@ -169,9 +286,36 @@ struct bf6x32_pk_t
__host__ __device__ inline type pack(bf6_t* x)
{
static_assert(V == 1, "Vector size must be 1.");
static_assert(E == 32, "Number of elements must be 16.");
type* retval = reinterpret_cast<type*>(x);
return *retval;
static_assert(E == 32, "Number of elements must be 32.");
type packed{};
// for each of the 32 bf6_t values, place its 6 bits in the correct position
ck::static_for<0, 32, 1>{}([&](auto i) {
uint32_t bits = static_cast<uint32_t>(x[i]) & 0x3F;
constexpr int num_bits_elem = 6;
constexpr int num_bits_vec_elem = 32;
constexpr int vector_size = 6;
constexpr int bit_pos = i * num_bits_elem;
constexpr int arr_index = bit_pos / num_bits_vec_elem;
constexpr int bit_offset = bit_pos % num_bits_vec_elem;
constexpr int overhang = bit_offset + num_bits_elem - num_bits_vec_elem;
uint32_t old_value = packed.At(Number<arr_index>{});
// insert bits into the current 32-bit block
old_value |= (bits << bit_offset);
packed.At(Number<arr_index>{}) = old_value;
// if it crosses into the next block, shift the remainder
if constexpr(overhang > 0 && (arr_index + 1) < vector_size)
{
uint32_t next_value = packed.At(Number<arr_index + 1>{});
next_value |= (bits >> (num_bits_elem - overhang));
packed.At(Number<arr_index + 1>{}) = next_value;
}
});
return packed;
}
};
......
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