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nac3core: list slice irrt use one function to handle var size

This commit is contained in:
ychenfo 2022-02-02 03:19:11 +08:00
parent e50f1017fa
commit 6f9f455152
2 changed files with 28 additions and 120 deletions

View File

@ -57,79 +57,6 @@ int32_t __nac3_range_slice_len(const int32_t start, const int32_t end, const int
// - The end index is *inclusive*,
// - The length of src and dest slice size should already
// be checked: if dest.step == 1 then len(src) <= len(dest) else len(src) == len(dest)
# define DEF_SLICE_ASSIGN(T) int32_t __nac3_list_slice_assign_##T( \
int32_t dest_start, \
int32_t dest_end, \
int32_t dest_step, \
T *dest_arr, \
int32_t dest_arr_len, \
int32_t src_start, \
int32_t src_end, \
int32_t src_step, \
T *src_arr, \
int32_t src_arr_len \
) { \
/* if dest_arr_len == 0, do nothing since we do not support extending list */ \
if (dest_arr_len == 0) return dest_arr_len; \
/* if both step is 1, memmove directly, handle the dropping of the list, and shrink size */ \
if (src_step == dest_step && dest_step == 1) { \
const int32_t src_len = (src_end >= src_start) ? (src_end - src_start + 1) : 0; \
const int32_t dest_len = (dest_end >= dest_start) ? (dest_end - dest_start + 1) : 0; \
if (src_len > 0) { \
__builtin_memmove( \
dest_arr + dest_start, \
src_arr + src_start, \
src_len * sizeof(T) \
); \
} \
if (dest_len > 0) { \
/* dropping */ \
__builtin_memmove( \
dest_arr + dest_start + src_len, \
dest_arr + dest_end + 1, \
(dest_arr_len - dest_end - 1) * sizeof(T) \
); \
} \
/* shrink size */ \
return dest_arr_len - (dest_len - src_len); \
} \
/* if two range overlaps, need alloca */ \
uint8_t need_alloca = \
(dest_arr == src_arr) \
&& !( \
MAX(dest_start, dest_end) < MIN(src_start, src_end) \
|| MAX(src_start, src_end) < MIN(dest_start, dest_end) \
); \
if (need_alloca) { \
T *tmp = alloca(src_arr_len * sizeof(T)); \
__builtin_memcpy(tmp, src_arr, src_arr_len * sizeof(T)); \
src_arr = tmp; \
} \
int32_t src_ind = src_start; \
int32_t dest_ind = dest_start; \
for (; \
(src_step > 0) ? (src_ind <= src_end) : (src_ind >= src_end); \
src_ind += src_step, dest_ind += dest_step \
) { \
dest_arr[dest_ind] = src_arr[src_ind]; \
} \
/* only dest_step == 1 can we shrink the dest list. */ \
/* size should be ensured prior to calling this function */ \
if (dest_step == 1 && dest_end >= dest_start) { \
__builtin_memmove( \
dest_arr + dest_ind, \
dest_arr + dest_end + 1, \
(dest_arr_len - dest_end - 1) * sizeof(T) \
); \
return dest_arr_len - (dest_end - dest_ind) - 1; \
} \
return dest_arr_len; \
} \
DEF_SLICE_ASSIGN(uint8_t)
DEF_SLICE_ASSIGN(uint32_t)
DEF_SLICE_ASSIGN(uint64_t)
int32_t __nac3_list_slice_assign_var_size(
int32_t dest_start,
int32_t dest_end,
@ -185,8 +112,17 @@ int32_t __nac3_list_slice_assign_var_size(
(src_step > 0) ? (src_ind <= src_end) : (src_ind >= src_end);
src_ind += src_step, dest_ind += dest_step
) {
/* memcpy for var size, cannot overlap after previous alloca */
__builtin_memcpy(dest_arr + dest_ind * size, src_arr + src_ind * size, size);
/* for constant optimization */
if (size == 1) {
__builtin_memcpy(dest_arr + dest_ind, src_arr + src_ind, 1);
} else if (size == 4) {
__builtin_memcpy(dest_arr + dest_ind * 4, src_arr + src_ind * 4, 4);
} else if (size == 8) {
__builtin_memcpy(dest_arr + dest_ind * 8, src_arr + src_ind * 8, 8);
} else {
/* memcpy for var size, cannot overlap after previous alloca */
__builtin_memcpy(dest_arr + dest_ind * size, src_arr + src_ind * size, size);
}
}
/* only dest_step == 1 can we shrink the dest list. */
/* size should be ensured prior to calling this function */

View File

@ -237,30 +237,9 @@ pub fn list_slice_assignment<'ctx, 'a>(
) {
let int8_ptr = ctx.ctx.i8_type().ptr_type(AddressSpace::Generic);
let int32 = ctx.ctx.i32_type();
let int32_ptr = int32.ptr_type(AddressSpace::Generic);
let int64_ptr = ctx.ctx.i64_type().ptr_type(AddressSpace::Generic);
let elem_size = match ty {
BasicTypeEnum::IntType(ty) => match ty.get_bit_width() {
w if w < 32 => Some(8),
w if w == 32 || w == 64 => Some(w),
_ => unreachable!(),
},
BasicTypeEnum::FloatType(_) => Some(64),
BasicTypeEnum::PointerType(_) => match size_ty.get_bit_width() {
w if w == 32 || w == 64 => Some(w),
_ => unreachable!(),
},
BasicTypeEnum::StructType(_) => None,
_ => unreachable!(),
};
let (fun_symbol, elem_ptr_type) = match elem_size {
Some(8) => ("__nac3_list_slice_assign_uint8_t", int8_ptr),
Some(32) => ("__nac3_list_slice_assign_uint32_t", int32_ptr),
Some(64) => ("__nac3_list_slice_assign_uint64_t", int64_ptr),
_ => ("__nac3_list_slice_assign_var_size", int8_ptr),
};
let (fun_symbol, elem_ptr_type) = ("__nac3_list_slice_assign_var_size", int8_ptr);
let slice_assign_fun = {
let mut ty_vec = vec![
let ty_vec = vec![
int32.into(), // dest start idx
int32.into(), // dest end idx
int32.into(), // dest step
@ -271,17 +250,10 @@ pub fn list_slice_assignment<'ctx, 'a>(
int32.into(), // src step
elem_ptr_type.into(), // src arr ptr
int32.into(), // src arr len
int32.into(), // size
];
ctx.module.get_function(fun_symbol).unwrap_or_else(|| {
let fn_t = int32.fn_type(
{
if fun_symbol == "__nac3_list_slice_assign_var_size" {
ty_vec.push(int32.into());
}
ty_vec.as_slice()
},
false,
);
let fn_t = int32.fn_type(ty_vec.as_slice(), false);
ctx.module.add_function(fun_symbol, fn_t, None)
})
};
@ -309,7 +281,7 @@ pub fn list_slice_assignment<'ctx, 'a>(
// TODO: assert if dest.step == 1 then len(src) <= len(dest) else len(src) == len(dest), and
// throw exception if not satisfied
let new_len = {
let mut args = vec![
let args = vec![
dest_idx.0.into(), // dest start idx
dest_idx.1.into(), // dest end idx
dest_idx.2.into(), // dest step
@ -320,20 +292,20 @@ pub fn list_slice_assignment<'ctx, 'a>(
src_idx.2.into(), // src step
src_arr_ptr.into(), // src arr ptr
src_len.into(), // src arr len
{
let s = match ty {
BasicTypeEnum::FloatType(t) => t.size_of(),
BasicTypeEnum::IntType(t) => t.size_of(),
BasicTypeEnum::PointerType(t) => t.size_of(),
BasicTypeEnum::StructType(t) => t.size_of().unwrap(),
_ => unreachable!(),
};
ctx.builder.build_int_truncate_or_bit_cast(s, int32, "size")
}
.into(),
];
ctx.builder
.build_call(
slice_assign_fun,
{
if fun_symbol == "__nac3_list_slice_assign_var_size" {
let s = ty.into_struct_type().size_of().unwrap();
let s = ctx.builder.build_int_truncate_or_bit_cast(s, int32, "size");
args.push(s.into());
}
args.as_slice()
},
"slice_assign",
)
.build_call(slice_assign_fun, args.as_slice(), "slice_assign")
.try_as_basic_value()
.unwrap_left()
.into_int_value()