本文整理汇总了Python中llvmlite.llvmpy.core.Builder.if_else方法的典型用法代码示例。如果您正苦于以下问题：Python Builder.if_else方法的具体用法？Python Builder.if_else怎么用？Python Builder.if_else使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类llvmlite.llvmpy.core.Builder的用法示例。
在下文中一共展示了Builder.if_else方法的1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，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: build_ufunc_wrapper
# 需要导入模块: from llvmlite.llvmpy.core import Builder [as 别名]
# 或者: from llvmlite.llvmpy.core.Builder import if_else [as 别名]
def build_ufunc_wrapper(library, context, fname, signature, objmode, envptr, env):
"""
Wrap the scalar function with a loop that iterates over the arguments
"""
assert isinstance(fname, str)
byte_t = Type.int(8)
byte_ptr_t = Type.pointer(byte_t)
byte_ptr_ptr_t = Type.pointer(byte_ptr_t)
intp_t = context.get_value_type(types.intp)
intp_ptr_t = Type.pointer(intp_t)
fnty = Type.function(Type.void(), [byte_ptr_ptr_t, intp_ptr_t,
intp_ptr_t, byte_ptr_t])
wrapperlib = context.codegen().create_library('ufunc_wrapper')
wrapper_module = wrapperlib.create_ir_module('')
if objmode:
func_type = context.call_conv.get_function_type(
types.pyobject, [types.pyobject] * len(signature.args))
else:
func_type = context.call_conv.get_function_type(
signature.return_type, signature.args)
func = wrapper_module.add_function(func_type, name=fname)
func.attributes.add("alwaysinline")
wrapper = wrapper_module.add_function(fnty, "__ufunc__." + func.name)
arg_args, arg_dims, arg_steps, arg_data = wrapper.args
arg_args.name = "args"
arg_dims.name = "dims"
arg_steps.name = "steps"
arg_data.name = "data"
builder = Builder(wrapper.append_basic_block("entry"))
loopcount = builder.load(arg_dims, name="loopcount")
# Prepare inputs
arrays = []
for i, typ in enumerate(signature.args):
arrays.append(UArrayArg(context, builder, arg_args, arg_steps, i, typ))
# Prepare output
out = UArrayArg(context, builder, arg_args, arg_steps, len(arrays),
signature.return_type)
# Setup indices
offsets = []
zero = context.get_constant(types.intp, 0)
for _ in arrays:
p = cgutils.alloca_once(builder, intp_t)
offsets.append(p)
builder.store(zero, p)
store_offset = cgutils.alloca_once(builder, intp_t)
builder.store(zero, store_offset)
unit_strided = cgutils.true_bit
for ary in arrays:
unit_strided = builder.and_(unit_strided, ary.is_unit_strided)
pyapi = context.get_python_api(builder)
if objmode:
# General loop
gil = pyapi.gil_ensure()
with cgutils.for_range(builder, loopcount, intp=intp_t):
slowloop = build_obj_loop_body(context, func, builder,
arrays, out, offsets,
store_offset, signature,
pyapi, envptr, env)
pyapi.gil_release(gil)
builder.ret_void()
else:
with builder.if_else(unit_strided) as (is_unit_strided, is_strided):
with is_unit_strided:
with cgutils.for_range(builder, loopcount, intp=intp_t) as loop:
fastloop = build_fast_loop_body(context, func, builder,
arrays, out, offsets,
store_offset, signature,
loop.index, pyapi)
with is_strided:
# General loop
with cgutils.for_range(builder, loopcount, intp=intp_t):
slowloop = build_slow_loop_body(context, func, builder,
arrays, out, offsets,
store_offset, signature,
pyapi)
builder.ret_void()
del builder
# Link and finalize
wrapperlib.add_ir_module(wrapper_module)
wrapperlib.add_linking_library(library)
return wrapperlib.get_pointer_to_function(wrapper.name)