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compiler.embedding: implement string concatenation. 

Fixes #526.
This commit is contained in:
whitequark 2016-08-08 04:05:52 +00:00
parent 5a2306ae5a
commit 1a518ea7eb
8 changed files with 85 additions and 13 deletions
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6
artiq/compiler/builtins.py
View File

@ -260,7 +260,7 @@ def is_array(typ, elt=None):
return types.is_mono(typ, "array")
def is_listish(typ, elt=None):
return is_list(typ, elt) or is_array(typ, elt)
return is_list(typ, elt) or is_array(typ, elt) or (elt is None and is_str(typ))
def is_range(typ, elt=None):
if elt is not None:
@ -283,6 +283,10 @@ def is_iterable(typ):
def get_iterable_elt(typ):
if is_iterable(typ):
return typ.find()["elt"].find()
elif is_str(typ):
return TInt(types.TValue(8))
else:
assert False
def is_collection(typ):
typ = typ.find()

16
artiq/compiler/transforms/artiq_ir_generator.py
View File

@ -478,8 +478,12 @@ class ARTIQIRGenerator(algorithm.Visitor):
def iterable_len(self, value, typ=_size_type):
if builtins.is_listish(value.type):
if isinstance(value, ir.Constant):
name = None
else:
name = "{}.len".format(value.name)
return self.append(ir.Builtin("len", [value], typ,
name="{}.len".format(value.name)))
name=name))
elif builtins.is_range(value.type):
start = self.append(ir.GetAttr(value, "start"))
stop = self.append(ir.GetAttr(value, "stop"))
@ -1313,7 +1317,7 @@ class ARTIQIRGenerator(algorithm.Visitor):
loc=node.right.loc)
return self.append(ir.Arith(node.op, lhs, rhs))
elif isinstance(node.op, ast.Add): # list + list, tuple + tuple
elif isinstance(node.op, ast.Add): # list + list, tuple + tuple, str + str
lhs, rhs = self.visit(node.left), self.visit(node.right)
if types.is_tuple(node.left.type) and types.is_tuple(node.right.type):
elts = []
@ -1327,6 +1331,10 @@ class ARTIQIRGenerator(algorithm.Visitor):
rhs_length = self.iterable_len(rhs)
result_length = self.append(ir.Arith(ast.Add(loc=None), lhs_length, rhs_length))
if builtins.is_str(node.left.type):
result_last = result_length
result_length = self.append(ir.Arith(ast.Add(loc=None), result_length,
ir.Constant(1, self._size_type)))
result = self.append(ir.Alloc([result_length], node.type))
# Copy lhs
@ -1350,6 +1358,10 @@ class ARTIQIRGenerator(algorithm.Visitor):
lambda index: self.append(ir.Compare(ast.Lt(loc=None), index, rhs_length)),
body_gen)
if builtins.is_str(node.left.type):
self.append(ir.SetElem(result, result_last,
ir.Constant(0, builtins.TInt(types.TValue(8)))))
return result
else:
assert False

4
artiq/compiler/transforms/inferencer.py
View File

@ -394,6 +394,10 @@ class Inferencer(algorithm.Visitor):
self._unify(left.type, right.type,
left.loc, right.loc)
return left.type, left.type, right.type
elif builtins.is_str(left.type) or builtins.is_str(right.type):
self._unify(left.type, right.type,
left.loc, right.loc)
return left.type, left.type, right.type
else:
return self._coerce_numeric((left, right), lambda typ: (typ, typ, typ))
elif isinstance(op, ast.Mult):

36
artiq/compiler/transforms/llvm_ir_generator.py
View File

@ -344,6 +344,8 @@ class LLVMIRGenerator:
llty = ll.FunctionType(llvoid, [self.llty_of_type(builtins.TException())])
elif name == "__artiq_reraise":
llty = ll.FunctionType(llvoid, [])
elif name == "strlen":
llty = ll.FunctionType(lli32, [llptr])
elif name == "strcmp":
llty = ll.FunctionType(lli32, [llptr, llptr])
elif name == "send_rpc":
@ -610,6 +612,10 @@ class LLVMIRGenerator:
name=insn.name)
else:
assert False
elif builtins.is_str(insn.type):
llsize = self.map(insn.operands[0])
llvalue = self.llbuilder.alloca(lli8, size=llsize)
return llvalue
elif builtins.is_listish(insn.type):
llsize = self.map(insn.operands[0])
llvalue = ll.Constant(self.llty_of_type(insn.type), ll.Undefined)
@ -818,18 +824,27 @@ class LLVMIRGenerator:
return self.llbuilder.store(llvalue, llptr)
def process_GetElem(self, insn):
llelts = self.llbuilder.extract_value(self.map(insn.list()), 1)
llelt = self.llbuilder.gep(llelts, [self.map(insn.index())],
inbounds=True)
llvalue = self.llbuilder.load(llelt)
lst, idx = insn.list(), insn.index()
lllst, llidx = map(self.map, (lst, idx))
if builtins.is_str(lst.type):
llelt = self.llbuilder.gep(lllst, [llidx], inbounds=True)
llvalue = self.llbuilder.load(llelt)
else:
llelts = self.llbuilder.extract_value(lllst, 1)
llelt = self.llbuilder.gep(llelts, [llidx], inbounds=True)
llvalue = self.llbuilder.load(llelt)
if isinstance(llvalue.type, ll.PointerType):
self.mark_dereferenceable(llvalue)
return llvalue
def process_SetElem(self, insn):
llelts = self.llbuilder.extract_value(self.map(insn.list()), 1)
llelt = self.llbuilder.gep(llelts, [self.map(insn.index())],
inbounds=True)
lst, idx = insn.list(), insn.index()
lllst, llidx = map(self.map, (lst, idx))
if builtins.is_str(lst.type):
llelt = self.llbuilder.gep(lllst, [llidx], inbounds=True)
else:
llelts = self.llbuilder.extract_value(lllst, 1)
llelt = self.llbuilder.gep(llelts, [llidx], inbounds=True)
return self.llbuilder.store(self.map(insn.value()), llelt)
def process_Coerce(self, insn):
@ -1045,8 +1060,11 @@ class LLVMIRGenerator:
env, = insn.operands
return get_outer(self.map(env), env.type)
elif insn.op == "len":
lst, = insn.operands
return self.llbuilder.extract_value(self.map(lst), 0)
collection, = insn.operands
if builtins.is_str(collection.type):
return self.llbuilder.call(self.llbuiltin("strlen"), [self.map(collection)])
else:
return self.llbuilder.extract_value(self.map(collection), 0)
elif insn.op in ("printf", "rtio_log"):
# We only get integers, floats, pointers and strings here.
llargs = map(self.map, insn.operands)

2
artiq/compiler/validators/escape.py
View File

@ -351,6 +351,6 @@ class EscapeValidator(algorithm.Visitor):
{"type": types.TypePrinter().name(node.value.type)},
node.value.loc)
diag = diagnostic.Diagnostic("error",
"cannot return a mutable value that does not live forever", {},
"cannot return an allocated value that does not live forever", {},
node.value.loc, notes=self._diagnostics_for(region, node.value.loc) + [note])
self.engine.process(diag)

11
artiq/test/lit/escape/const_string.py Normal file
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@ -0,0 +1,11 @@
# RUN: %python -m artiq.compiler.testbench.embedding %s
from artiq.experiment import *
@kernel
def foo():
return "x"
@kernel
def entrypoint():
foo()

19
artiq/test/lit/escape/error_string.py Normal file
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@ -0,0 +1,19 @@
# RUN: %python -m artiq.compiler.testbench.embedding +diag %s 2>%t
# RUN: OutputCheck %s --file-to-check=%t
from artiq.experiment import *
@kernel
def foo():
# CHECK-NOT-L: ${LINE:+1}: error:
return "x"
@kernel
def bar():
# CHECK-L: ${LINE:+1}: error: cannot return an allocated value that does not live forever
return "x" + "y"
@kernel
def entrypoint():
foo()
bar()

4
artiq/test/lit/integration/str.py Normal file
View File

@ -0,0 +1,4 @@
# RUN: %python -m artiq.compiler.testbench.jit %s
# RUN: %python %s
assert ("x" + "y") == "xy"