mirror of https://github.com/m-labs/artiq.git
242 lines
8.6 KiB
Python
242 lines
8.6 KiB
Python
import os, sys, tempfile, subprocess
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from artiq.compiler import types
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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 RunTool:
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def __init__(self, pattern, **tempdata):
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self.files = []
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self.pattern = pattern
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self.tempdata = tempdata
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def maketemp(self, data):
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f = tempfile.NamedTemporaryFile()
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f.write(data)
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f.flush()
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self.files.append(f)
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return f
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def __enter__(self):
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tempfiles = {}
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tempnames = {}
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for key in self.tempdata:
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tempfiles[key] = self.maketemp(self.tempdata[key])
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tempnames[key] = tempfiles[key].name
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cmdline = []
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for argument in self.pattern:
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cmdline.append(argument.format(**tempnames))
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process = subprocess.Popen(cmdline, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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stdout, stderr = process.communicate()
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if process.returncode != 0:
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raise Exception("{} invocation failed: {}".
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format(cmdline[0], stderr.decode('utf-8')))
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tempfiles["__stdout__"] = stdout.decode('utf-8')
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return tempfiles
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def __exit__(self, exc_typ, exc_value, exc_trace):
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for f in self.files:
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f.close()
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def _dump(target, kind, suffix, content):
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if target is not None:
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print("====== {} DUMP ======".format(kind.upper()), file=sys.stderr)
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content_value = content()
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if isinstance(content_value, str):
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content_value = bytes(content_value, 'utf-8')
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if target == "":
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file = tempfile.NamedTemporaryFile(suffix=suffix, delete=False)
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else:
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file = open(target + suffix, "wb")
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file.write(content_value)
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file.close()
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print("{} dumped as {}".format(kind, file.name), file=sys.stderr)
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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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generated 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 data_layout: (string)
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LLVM target data layout, e.g. ``"E-m:e-p:32:32-i64:32-f64:32-v64:32-v128:32-a:0:32-n32"``
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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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data_layout = ""
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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 target_machine(self):
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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(["+{}".format(f) for f in self.features]),
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reloc="pic", codemodel="default")
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llmachine.set_asm_verbosity(True)
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return llmachine
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def optimize(self, llmodule):
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llpassmgr = llvm.create_module_pass_manager()
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# Register our alias analysis passes.
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llpassmgr.add_basic_alias_analysis_pass()
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llpassmgr.add_type_based_alias_analysis_pass()
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# Start by cleaning up after our codegen and exposing as much
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# information to LLVM as possible.
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llpassmgr.add_constant_merge_pass()
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llpassmgr.add_cfg_simplification_pass()
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llpassmgr.add_instruction_combining_pass()
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llpassmgr.add_sroa_pass()
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llpassmgr.add_dead_code_elimination_pass()
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llpassmgr.add_function_attrs_pass()
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llpassmgr.add_global_optimizer_pass()
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# Now, actually optimize the code.
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llpassmgr.add_function_inlining_pass(275)
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llpassmgr.add_ipsccp_pass()
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llpassmgr.add_instruction_combining_pass()
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llpassmgr.add_gvn_pass()
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llpassmgr.add_cfg_simplification_pass()
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llpassmgr.add_licm_pass()
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# Clean up after optimizing.
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llpassmgr.add_dead_arg_elimination_pass()
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llpassmgr.add_global_dce_pass()
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llpassmgr.run(llmodule)
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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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if os.getenv("ARTIQ_DUMP_SIG"):
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print("====== MODULE_SIGNATURE DUMP ======", file=sys.stderr)
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print(module, file=sys.stderr)
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type_printer = types.TypePrinter()
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_dump(os.getenv("ARTIQ_DUMP_IR"), "ARTIQ IR", ".txt",
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lambda: "\n".join(fn.as_entity(type_printer) for fn in module.artiq_ir))
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llmod = module.build_llvm_ir(self)
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try:
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llparsedmod = llvm.parse_assembly(str(llmod))
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llparsedmod.verify()
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except RuntimeError:
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_dump("", "LLVM IR (broken)", ".ll", lambda: str(llmod))
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raise
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_dump(os.getenv("ARTIQ_DUMP_UNOPT_LLVM"), "LLVM IR (generated)", "_unopt.ll",
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lambda: str(llparsedmod))
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self.optimize(llparsedmod)
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_dump(os.getenv("ARTIQ_DUMP_LLVM"), "LLVM IR (optimized)", ".ll",
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lambda: str(llparsedmod))
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return llparsedmod
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def assemble(self, llmodule):
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llmachine = self.target_machine()
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_dump(os.getenv("ARTIQ_DUMP_ASM"), "Assembly", ".s",
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lambda: llmachine.emit_assembly(llmodule))
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_dump(os.getenv("ARTIQ_DUMP_OBJ"), "Object file", ".o",
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lambda: llmachine.emit_object(llmodule))
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return llmachine.emit_object(llmodule)
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def link(self, objects):
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"""Link the relocatable objects into a shared library for this target."""
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with RunTool([self.triple + "-ld", "-shared", "--eh-frame-hdr"] +
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["{{obj{}}}".format(index) for index in range(len(objects))] +
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["-o", "{output}"],
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output=b"",
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**{"obj{}".format(index): obj for index, obj in enumerate(objects)}) \
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as results:
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library = results["output"].read()
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_dump(os.getenv("ARTIQ_DUMP_ELF"), "Shared library", ".elf",
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lambda: library)
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return library
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def compile_and_link(self, modules):
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return self.link([self.assemble(self.compile(module)) for module in modules])
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def strip(self, library):
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with RunTool([self.triple + "-strip", "--strip-debug", "{library}", "-o", "{output}"],
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library=library, output=b"") \
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as results:
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return results["output"].read()
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def symbolize(self, library, addresses):
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if addresses == []:
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return []
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# We got a list of return addresses, i.e. addresses of instructions
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# just after the call. Offset them back to get an address somewhere
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# inside the call instruction (or its delay slot), since that's what
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# the backtrace entry should point at.
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offset_addresses = [hex(addr - 1) for addr in addresses]
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with RunTool([self.triple + "-addr2line", "--addresses", "--functions", "--inlines",
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"--demangle", "--exe={library}"] + offset_addresses,
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library=library) \
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as results:
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lines = iter(results["__stdout__"].rstrip().split("\n"))
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backtrace = []
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while True:
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try:
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address_or_function = next(lines)
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except StopIteration:
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break
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if address_or_function[:2] == "0x":
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address = int(address_or_function[2:], 16) + 1 # remove offset
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function = next(lines)
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else:
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address = backtrace[-1][4] # inlined
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function = address_or_function
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location = next(lines)
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filename, line = location.rsplit(":", 1)
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if filename == "??" or filename == "<synthesized>":
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continue
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if line == "?":
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line = -1
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else:
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line = int(line)
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# can't get column out of addr2line D:
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backtrace.append((filename, line, -1, function, address))
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return backtrace
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def demangle(self, names):
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with RunTool([self.triple + "-c++filt"] + names) as results:
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return results["__stdout__"].rstrip().split("\n")
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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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data_layout = "E-m:e-p:32:32-i8:8:8-i16:16:16-i64:32:32-" \
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"f64:32:32-v64:32:32-v128:32:32-a0:0:32-n32"
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features = ["mul", "div", "ffl1", "cmov", "addc"]
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print_function = "core_log"
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