def load_direct(self, byteoffset):
"""
Generic load from the given *byteoffset*. load_aligned() is
preferred if possible.
"""
ptr = cgutils.pointer_add(self.builder, self.dataptr, byteoffset)
return self.context.unpack_value(self.builder, self.fe_type, ptr)
def access_member(member_offset):
# Access member by byte offset
offset = c.context.get_constant(types.uintp, member_offset)
llvoidptr = ir.IntType(8).as_pointer()
ptr = cgutils.pointer_add(c.builder, val, offset)
casted = c.builder.bitcast(ptr, llvoidptr.as_pointer())
return c.builder.load(casted)
def get_env_body(self, builder, envptr):
"""
From the given *envptr* (a pointer to a _dynfunc.Environment object),
get a EnvBody allowing structured access to environment fields.
"""
body_ptr = cgutils.pointer_add(
builder, envptr, _dynfunc._impl_info['offsetof_env_body'])
return EnvBody(self, builder, ref=body_ptr, cast_ref=True)
def get_generator_state(self, builder, genptr, return_type):
"""
From the given *genptr* (a pointer to a _dynfunc.Generator object),
get a pointer to its state area.
"""
return cgutils.pointer_add(
builder, genptr, _dynfunc._impl_info['offsetof_generator_state'],
return_type=return_type)
def load(self, context, builder, data, ind):
arytyp = types.Array(dtype=self.dtype, ndim=self.ndim, layout="A")
arycls = context.make_array(arytyp)
array = arycls(context, builder)
offseted_data = cgutils.pointer_add(builder, data,
builder.mul(self.core_step, ind))
shape, strides = self._shape_and_strides(context, builder)
itemsize = context.get_abi_sizeof(context.get_data_type(self.dtype))
context.populate_array(array,
data=builder.bitcast(offseted_data,
array.data.type),
shape=shape,
strides=strides,
itemsize=context.get_constant(
types.intp, itemsize),
meminfo=None)
return array._getvalue()
def store_direct(self, value, byteoffset):
ptr = cgutils.pointer_add(self.builder, self.dataptr, byteoffset)
self.context.pack_value(self.builder, self.fe_type, value, ptr)
def set_member(member_offset, value):
# Access member by byte offset
offset = c.context.get_constant(types.uintp, member_offset)
ptr = cgutils.pointer_add(c.builder, box, offset)
casted = c.builder.bitcast(ptr, llvoidptr.as_pointer())
c.builder.store(value, casted)
