forked from M-Labs/artiq
py2llvm: replace array with list
This commit is contained in:
parent
6ca39f7415
commit
f3b727b59d
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@ -4,7 +4,6 @@ Core ARTIQ extensions to the Python language.
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"""
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from collections import namedtuple as _namedtuple
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from copy import copy as _copy
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from functools import wraps as _wraps
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from artiq.language import units as _units
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@ -71,21 +70,6 @@ def round64(x):
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return int64(round(x))
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def array(element, count):
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"""Creates an array.
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The array is initialized with the value of ``element`` repeated ``count``
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times. Elements can be read and written using the regular Python index
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syntax.
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For static compilation, ``count`` must be a fixed integer.
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Arrays of arrays are supported.
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"""
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return [_copy(element) for i in range(count)]
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_KernelFunctionInfo = _namedtuple("_KernelFunctionInfo", "core_name k_function")
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@ -1,70 +0,0 @@
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import llvmlite.ir as ll
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from artiq.py2llvm.values import VGeneric
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from artiq.py2llvm.base_types import VInt
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class VArray(VGeneric):
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def __init__(self, el_init, count):
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VGeneric.__init__(self)
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self.el_init = el_init
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self.count = count
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if not count:
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raise TypeError("Arrays must have at least one element")
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def get_llvm_type(self):
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return ll.ArrayType(self.el_init.get_llvm_type(), self.count)
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def __repr__(self):
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return "<VArray:{} x{}>".format(repr(self.el_init), self.count)
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def same_type(self, other):
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return (
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isinstance(other, VArray)
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and self.el_init.same_type(other.el_init)
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and self.count == other.count)
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def merge(self, other):
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if isinstance(other, VArray):
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self.el_init.merge(other.el_init)
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else:
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raise TypeError("Incompatible types: {} and {}"
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.format(repr(self), repr(other)))
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def merge_subscript(self, other):
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self.el_init.merge(other)
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def set_value(self, builder, v):
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if not isinstance(v, VArray):
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raise TypeError
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if v.llvm_value is not None:
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raise NotImplementedError("Array aliasing is not supported")
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i = VInt()
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i.alloca(builder, "ai_i")
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i.auto_store(builder, ll.Constant(ll.IntType(32), 0))
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function = builder.basic_block.function
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copy_block = function.append_basic_block("ai_copy")
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end_block = function.append_basic_block("ai_end")
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builder.branch(copy_block)
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builder.position_at_end(copy_block)
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self.o_subscript(i, builder).set_value(builder, v.el_init)
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i.auto_store(builder, builder.add(
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i.auto_load(builder), ll.Constant(ll.IntType(32), 1)))
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cont = builder.icmp_signed(
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"<", i.auto_load(builder),
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ll.Constant(ll.IntType(32), self.count))
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builder.cbranch(cont, copy_block, end_block)
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builder.position_at_end(end_block)
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def o_subscript(self, index, builder):
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r = self.el_init.new()
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if builder is not None:
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index = index.o_int(builder).auto_load(builder)
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ssa_r = builder.gep(self.llvm_value, [
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ll.Constant(ll.IntType(32), 0), index])
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r.auto_store(builder, ssa_r)
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return r
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@ -2,7 +2,7 @@ import ast
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import llvmlite.ir as ll
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from artiq.py2llvm import values, base_types, fractions, arrays, iterators
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from artiq.py2llvm import values, base_types, fractions, lists, iterators
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from artiq.py2llvm.tools import is_terminated
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@ -177,14 +177,6 @@ class Visitor:
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denominator = self.visit_expression(node.args[1])
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r.set_value_nd(self.builder, numerator, denominator)
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return r
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elif fn == "array":
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element = self.visit_expression(node.args[0])
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if (isinstance(node.args[1], ast.Num)
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and isinstance(node.args[1].n, int)):
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count = node.args[1].n
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else:
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raise ValueError("Array size must be integer and constant")
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return arrays.VArray(element, count)
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elif fn == "range":
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return iterators.IRange(
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self.builder,
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@ -201,6 +193,56 @@ class Visitor:
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value = self.visit_expression(node.value)
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return value.o_getattr(node.attr, self.builder)
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def _visit_expr_List(self, node):
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elts = [self.visit_expression(elt) for elt in node.elts]
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if elts:
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el_type = elts[0].new()
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for elt in elts[1:]:
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el_type.merge(elt)
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else:
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el_type = VNone()
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count = len(elts)
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r = lists.VList(el_type, count)
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r.elts = elts
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return r
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def _visit_expr_ListComp(self, node):
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if len(node.generators) != 1:
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raise NotImplementedError
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generator = node.generators[0]
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if not isinstance(generator, ast.comprehension):
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raise NotImplementedError
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if not isinstance(generator.target, ast.Name):
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raise NotImplementedError
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target = generator.target.id
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if not isinstance(generator.iter, ast.Call):
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raise NotImplementedError
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if not isinstance(generator.iter.func, ast.Name):
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raise NotImplementedError
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if generator.iter.func.id != "range":
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raise NotImplementedError
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if len(generator.iter.args) != 1:
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raise NotImplementedError
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if not isinstance(generator.iter.args[0], ast.Num):
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raise NotImplementedError
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count = generator.iter.args[0].n
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# Prevent incorrect use of the generator target, if it is defined in
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# the local function namespace.
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if target in self.ns:
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old_target_val = self.ns[target]
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del self.ns[target]
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else:
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old_target_val = None
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elt = self.visit_expression(node.elt)
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if old_target_val is not None:
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self.ns[target] = old_target_val
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el_type = elt.new()
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r = lists.VList(el_type, count)
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r.elt = elt
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return r
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def _visit_expr_Subscript(self, node):
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value = self.visit_expression(node.value)
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if isinstance(node.slice, ast.Index):
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@ -227,9 +269,47 @@ class Visitor:
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def _visit_stmt_Assign(self, node):
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val = self.visit_expression(node.value)
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for target in node.targets:
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target = self.visit_expression(target)
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target.set_value(self.builder, val)
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if isinstance(node.value, ast.List):
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if len(node.targets) > 1:
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raise NotImplementedError
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target = self.visit_expression(node.targets[0])
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target.set_count(self.builder, val.alloc_count)
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for i, elt in enumerate(val.elts):
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idx = base_types.VInt()
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idx.set_const_value(self.builder, i)
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target.o_subscript(idx, self.builder).set_value(self.builder,
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elt)
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elif isinstance(node.value, ast.ListComp):
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if len(node.targets) > 1:
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raise NotImplementedError
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target = self.visit_expression(node.targets[0])
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target.set_count(self.builder, val.alloc_count)
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i = base_types.VInt()
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i.alloca(self.builder)
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i.auto_store(self.builder, ll.Constant(ll.IntType(32), 0))
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function = self.builder.basic_block.function
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copy_block = function.append_basic_block("ai_copy")
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end_block = function.append_basic_block("ai_end")
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self.builder.branch(copy_block)
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self.builder.position_at_end(copy_block)
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target.o_subscript(i, self.builder).set_value(self.builder,
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val.elt)
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i.auto_store(self.builder, self.builder.add(
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i.auto_load(self.builder),
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ll.Constant(ll.IntType(32), 1)))
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cont = self.builder.icmp_signed(
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"<", i.auto_load(self.builder),
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ll.Constant(ll.IntType(32), val.alloc_count))
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self.builder.cbranch(cont, copy_block, end_block)
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self.builder.position_at_end(end_block)
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else:
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for target in node.targets:
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target = self.visit_expression(target)
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target.set_value(self.builder, val)
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def _visit_stmt_AugAssign(self, node):
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target = self.visit_expression(node.target)
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@ -0,0 +1,52 @@
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import llvmlite.ir as ll
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from artiq.py2llvm.values import VGeneric
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class VList(VGeneric):
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def __init__(self, el_type, alloc_count):
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VGeneric.__init__(self)
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self.el_type = el_type
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self.alloc_count = alloc_count
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def get_llvm_type(self):
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count = 0 if self.alloc_count is None else self.alloc_count
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return ll.LiteralStructType([ll.IntType(32),
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ll.ArrayType(self.el_type.get_llvm_type(),
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count)])
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def __repr__(self):
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return "<VList:{} x{}>".format(
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repr(self.el_type),
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"?" if self.alloc_count is None else self.alloc_count)
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def same_type(self, other):
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return (isinstance(other, VList)
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and self.el_type.same_type(other.el_type))
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def merge(self, other):
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if isinstance(other, VList):
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self.el_type.merge(other.el_type)
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else:
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raise TypeError("Incompatible types: {} and {}"
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.format(repr(self), repr(other)))
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def merge_subscript(self, other):
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self.el_type.merge(other)
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def set_count(self, builder, count):
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count_ptr = builder.gep(self.llvm_value, [
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ll.Constant(ll.IntType(32), 0),
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ll.Constant(ll.IntType(32), 0)])
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builder.store(ll.Constant(ll.IntType(32), count), count_ptr)
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def o_subscript(self, index, builder):
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r = self.el_type.new()
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if builder is not None:
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index = index.o_int(builder).auto_load(builder)
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ssa_r = builder.gep(self.llvm_value, [
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ll.Constant(ll.IntType(32), 0),
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ll.Constant(ll.IntType(32), 1),
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index])
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r.auto_store(builder, ssa_r)
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return r
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@ -39,7 +39,7 @@ class VGeneric:
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raise RuntimeError(
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"Attempted to set LLVM SSA value multiple times")
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def alloca(self, builder, name):
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def alloca(self, builder, name=""):
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if self.llvm_value is not None:
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raise RuntimeError("Attempted to alloca existing LLVM value "+name)
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self.llvm_value = builder.alloca(self.get_llvm_type(), name=name)
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@ -7,9 +7,9 @@ import struct
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import llvmlite.binding as llvm
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from artiq.language.core import int64, array
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from artiq.language.core import int64
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from artiq.py2llvm.infer_types import infer_function_types
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from artiq.py2llvm import base_types, arrays
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from artiq.py2llvm import base_types, lists
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from artiq.py2llvm.module import Module
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@ -71,22 +71,22 @@ class FunctionBaseTypesCase(unittest.TestCase):
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self.assertEqual(self.ns["return"].nbits, 64)
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def test_array_types():
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a = array(0, 5)
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def test_list_types():
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a = [0, 0, 0, 0, 0]
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for i in range(2):
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a[i] = int64(8)
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return a
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class FunctionArrayTypesCase(unittest.TestCase):
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class FunctionListTypesCase(unittest.TestCase):
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def setUp(self):
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self.ns = _build_function_types(test_array_types)
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self.ns = _build_function_types(test_list_types)
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def test_array_types(self):
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self.assertIsInstance(self.ns["a"], arrays.VArray)
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self.assertIsInstance(self.ns["a"].el_init, base_types.VInt)
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self.assertEqual(self.ns["a"].el_init.nbits, 64)
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self.assertEqual(self.ns["a"].count, 5)
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def test_list_types(self):
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self.assertIsInstance(self.ns["a"], lists.VList)
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self.assertIsInstance(self.ns["a"].el_type, base_types.VInt)
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self.assertEqual(self.ns["a"].el_type.nbits, 64)
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self.assertEqual(self.ns["a"].alloc_count, 5)
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self.assertIsInstance(self.ns["i"], base_types.VInt)
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self.assertEqual(self.ns["i"].nbits, 32)
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@ -212,20 +212,19 @@ def frac_arith_float_rev(op, a, b, x):
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return x / Fraction(a, b)
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def array_test():
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a = array(array(2, 5), 5)
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a[3][2] = 11
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a[4][1] = 42
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a[0][0] += 6
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def list_test():
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x = 80
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a = [3 for x in range(7)]
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b = [1, 2, 4, 5, 4, 0, 5]
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a[3] = x
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a[0] += 6
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a[1] = b[1] + b[2]
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acc = 0
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for i in range(5):
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for j in range(5):
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if i + j == 2 or i + j == 1:
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continue
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if i and j and a[i][j]:
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acc += 1
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acc += a[i][j]
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for i in range(7):
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if i and a[i]:
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acc += 1
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acc += a[i]
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return acc
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@ -364,9 +363,9 @@ class CodeGenCase(unittest.TestCase):
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self._test_frac_arith_float(3, False)
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self._test_frac_arith_float(3, True)
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def test_array(self):
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array_test_c = CompiledFunction(array_test, dict())
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self.assertEqual(array_test_c(), array_test())
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def test_list(self):
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list_test_c = CompiledFunction(list_test, dict())
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self.assertEqual(list_test_c(), list_test())
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def test_corner_cases(self):
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corner_cases_c = CompiledFunction(corner_cases, dict())
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@ -10,7 +10,7 @@ embeddable_funcs = (
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core_language.time_to_cycles, core_language.cycles_to_time,
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core_language.syscall,
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range, bool, int, float, round,
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core_language.int64, core_language.round64, core_language.array,
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core_language.int64, core_language.round64,
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Fraction, units.Quantity, units.check_unit, core_language.EncodedException
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)
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embeddable_func_names = {func.__name__ for func in embeddable_funcs}
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@ -66,7 +66,7 @@ A number of Python algorithmic features can be used inside a kernel for compilat
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* 64-bit signed integers (:class:`artiq.language.core.int64`)
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* Signed rational numbers with 64-bit numerator and 64-bit denominator
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* Double-precision floating point numbers
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* Arrays of the above types and arrays of arrays, at an arbitrary depth (:class:`artiq.language.core.array`)
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* Lists of the above types. Lists of lists are not supported.
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For a demonstration of some of these features, see the ``mandelbrot.py`` example.
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@ -23,7 +23,7 @@ class PhotonHistogram(AutoContext):
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@kernel
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def run(self):
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hist = array(0, self.nbins)
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hist = [0 for _ in range (self.nbins)]
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for i in range(self.repeats):
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n = self.cool_detect()
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@ -94,7 +94,7 @@ class Transport(AutoContext):
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@kernel
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def repeat(self):
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hist = array(0, self.nbins)
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hist = [0 for _ in range(self.nbins)]
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for i in range(self.repeats):
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n = self.one()
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