mirror of https://github.com/m-labs/artiq.git
88 lines
2.8 KiB
Python
88 lines
2.8 KiB
Python
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import tempfile, subprocess
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from llvmlite_artiq import ir as ll, binding as llvm
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llvm.initialize()
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llvm.initialize_all_targets()
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llvm.initialize_all_asmprinters()
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class Target:
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"""
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A description of the target environment where the binaries
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generaed by the ARTIQ compiler will be deployed.
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:var triple: (string)
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LLVM target triple, e.g. ``"or1k"``
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:var features: (list of string)
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LLVM target CPU features, e.g. ``["mul", "div", "ffl1"]``
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:var print_function: (string)
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Name of a formatted print functions (with the signature of ``printf``)
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provided by the target, e.g. ``"printf"``.
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"""
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triple = "unknown"
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features = []
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print_function = "printf"
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def __init__(self):
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self.llcontext = ll.Context()
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def link(self, objects, init_fn):
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"""Link the relocatable objects into a shared library for this target."""
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files = []
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def make_tempfile(data=b""):
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f = tempfile.NamedTemporaryFile()
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files.append(f)
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f.write(data)
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f.flush()
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return f
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output_file = make_tempfile()
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cmdline = [self.triple + "-ld", "-shared", "--eh-frame-hdr", "-init", init_fn] + \
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[make_tempfile(obj).name for obj in objects] + \
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["-o", output_file.name]
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linker = subprocess.Popen(cmdline, stderr=subprocess.PIPE)
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stdout, stderr = linker.communicate()
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if linker.returncode != 0:
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raise Exception("Linker invocation failed: " + stderr.decode('utf-8'))
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output = output_file.read()
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for f in files:
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f.close()
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return output
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def compile(self, module):
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"""Compile the module to a relocatable object for this target."""
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llmod = module.build_llvm_ir(self)
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llparsedmod = llvm.parse_assembly(str(llmod))
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llparsedmod.verify()
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llpassmgrbuilder = llvm.create_pass_manager_builder()
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llpassmgrbuilder.opt_level = 2 # -O2
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llpassmgrbuilder.size_level = 1 # -Os
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llpassmgr = llvm.create_module_pass_manager()
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llpassmgrbuilder.populate(llpassmgr)
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llpassmgr.run(llparsedmod)
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lltarget = llvm.Target.from_triple(self.triple)
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llmachine = lltarget.create_target_machine(
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features=",".join(self.features),
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reloc="pic", codemodel="default")
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return llmachine.emit_object(llparsedmod)
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def compile_and_link(self, modules):
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return self.link([self.compile(module) for module in modules],
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init_fn=modules[0].entry_point())
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class NativeTarget(Target):
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def __init__(self):
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super().__init__()
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self.triple = llvm.get_default_triple()
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class OR1KTarget(Target):
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triple = "or1k-linux"
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attributes = ["mul", "div", "ffl1", "cmov", "addc"]
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print_function = "log"
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