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transforms.artiq_ir_generator: don't emit delay instruction for zero delay. 

Call nodes with iodelay=Const(0) can be generated outside of
`with parallel:`, where Interleaver won't and LLVMIRGenerator can't
lower them.
This commit is contained in:
whitequark 2015-11-19 23:24:46 +08:00
parent 58db347e01
commit 2543daa5cf
1 changed files with 2 additions and 2 deletions
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4
artiq/compiler/transforms/artiq_ir_generator.py
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@ -8,7 +8,7 @@ semantics explicitly.
from collections import OrderedDict, defaultdict from collections import OrderedDict, defaultdict
from pythonparser import algorithm, diagnostic, ast from pythonparser import algorithm, diagnostic, ast
from .. import types, builtins, asttyped, ir from .. import types, builtins, asttyped, ir, iodelay
def _readable_name(insn): def _readable_name(insn):
if isinstance(insn, ir.Constant): if isinstance(insn, ir.Constant):
@ -1619,7 +1619,7 @@ class ARTIQIRGenerator(algorithm.Visitor):
attr_node = node.func attr_node = node.func
self.method_map[(attr_node.value.type, attr_node.attr)].append(insn) self.method_map[(attr_node.value.type, attr_node.attr)].append(insn)
if node.iodelay is not None: if node.iodelay is not None and not iodelay.is_const(node.iodelay, 0):
after_delay = self.add_block() after_delay = self.add_block()
self.append(ir.Delay(node.iodelay, self.append(ir.Delay(node.iodelay,
{var_name: self.current_args[var_name] {var_name: self.current_args[var_name]