forked from tinygrad/tinygrad
uuuvnandGitHub
a51c688f39
* Cleanup llvm cleanup (and some clang things too) * Tests * Tests 2 * forgot mockgpu * more print some sources
57 lines
3.2 KiB
Python
57 lines
3.2 KiB
Python
import ctypes, platform, sys
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from tinygrad.device import Compiled, Compiler, MallocAllocator, CPUProgram
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from tinygrad.helpers import OSX, getenv, capstone_flatdump
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from tinygrad.renderer.llvmir import LLVMRenderer
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import tinygrad.runtime.autogen.llvm as llvm
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from tinygrad.runtime.support.elf import jit_loader
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def cerr(): return ctypes.pointer(ctypes.pointer(ctypes.c_char()))
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def expect(x, err, ret=None):
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if x: raise RuntimeError(llvm.string_cast(err.contents) if not isinstance(err, str) else err)
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return ret
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class LLVMCompiler(Compiler):
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def __init__(self, host_arch:str, opt:bool):
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for component in ['Target', 'TargetInfo', 'TargetMC', 'AsmPrinter']: getattr(llvm, f'LLVMInitialize{host_arch}{component}')()
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triple = {'AArch64': b'aarch64', 'X86': b'x86_64'}[host_arch] + b'-none-unknown-elf'
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target = expect(llvm.LLVMGetTargetFromTriple(triple, ctypes.pointer(tgt:=llvm.LLVMTargetRef()), err:=cerr()), err, tgt)
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# +reserve-x18 here does the same thing as -ffixed-x18 in ops_clang.py, see comments there for why it's needed on arm osx
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self.target_machine = llvm.LLVMCreateTargetMachine(target, triple, b'', b'+reserve-x18' if OSX and host_arch == 'AArch64' else b'',
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llvm.LLVMCodeGenLevelDefault, llvm.LLVMRelocPIC, llvm.LLVMCodeModelDefault)
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self.pbo = llvm.LLVMCreatePassBuilderOptions()
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if opt:
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self.passes = b'default<O2>'
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llvm.LLVMPassBuilderOptionsSetLoopUnrolling(self.pbo, True)
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llvm.LLVMPassBuilderOptionsSetLoopVectorization(self.pbo, True)
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llvm.LLVMPassBuilderOptionsSetSLPVectorization(self.pbo, True)
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llvm.LLVMPassBuilderOptionsSetVerifyEach(self.pbo, True)
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else:
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self.passes = b'default<O0>'
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super().__init__(f"compile_llvm_jit{'_opt' if opt else ''}")
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def __del__(self):
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llvm.LLVMDisposePassBuilderOptions(self.pbo)
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def compile(self, src:str) -> bytes:
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src_buf = llvm.LLVMCreateMemoryBufferWithMemoryRangeCopy(ctypes.create_string_buffer(src_bytes:=src.encode()), len(src_bytes), b'src')
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mod = expect(llvm.LLVMParseIRInContext(llvm.LLVMGetGlobalContext(), src_buf, ctypes.pointer(m:=llvm.LLVMModuleRef()), err:=cerr()), err, m)
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expect(llvm.LLVMVerifyModule(mod, llvm.LLVMReturnStatusAction, err:=cerr()), err)
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expect(llvm.LLVMRunPasses(mod, self.passes, self.target_machine, self.pbo), 'failed to run passes')
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obj_buf = expect(llvm.LLVMTargetMachineEmitToMemoryBuffer(self.target_machine, mod, llvm.LLVMObjectFile, err:=cerr(),
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ctypes.pointer(buf:=llvm.LLVMMemoryBufferRef())), err, buf)
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obj = ctypes.string_at(llvm.LLVMGetBufferStart(obj_buf), llvm.LLVMGetBufferSize(obj_buf))
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llvm.LLVMDisposeModule(mod)
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llvm.LLVMDisposeMemoryBuffer(obj_buf)
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return jit_loader(obj)
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def disassemble(self, lib:bytes): capstone_flatdump(lib)
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class LLVMDevice(Compiled):
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def __init__(self, device:str):
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compiler = LLVMCompiler({'arm64': 'AArch64', 'aarch64': 'AArch64', 'x86_64': 'X86', 'AMD64': 'X86'}[platform.machine()], bool(getenv("LLVMOPT")))
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super().__init__(device, MallocAllocator, LLVMRenderer('win64cc' if sys.platform == 'win32' else None), compiler, CPUProgram)
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