TermiNexus
c83fc752c6
StructGen: _get_struct_size/_get_align 去 opaque→8/ptr_size、未知→4 兜底并补 VectorType；LiteralStructType.fields→.elements（llvmlite 无 fields，必然 AttributeError） HandlesClassDef: union 载荷尺寸经不存在的 ir.DataLayout 静默退化成 8 字节；HandlesExprCall/ExprBuiltin: sizeof 各静默 0 分支改 fail-fast，数组元素 sizeof 统一走 _get_struct_size HandlesFor: nonlocal struct/array 堆分配不再退化成 malloc(8) vast/vast_c: 补一元 * / & 解析，装饰器后 extern/export 分派修复，C 侧报错带 token 与行号；StubGen.Converter: 宏展开丢尾随空行修 .pyi 缩进非法 其余为 rawptr 迁移 / fail-fast 口径等历史改动一并入库
371 lines
20 KiB
Python
371 lines
20 KiB
Python
from __future__ import annotations
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import llvmlite.ir as ir
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class _VolatileLoadInstr(ir.LoadInstr):
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"""带 LLVM `volatile` 限定符的 load 指令。
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llvmlite 0.47 的 `ir.LoadInstr` / `ir.StoreInstr` 不支持 volatile（无该属性，
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`descr` 也不输出该关键字），故按本仓库既有做法（BaseGen.VaArgInstruction
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自定义 `descr`）派生子类，只把 `load` 关键字扩成 `load volatile`。
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输出格式与 llvmlite 原始实现逐字段一致（类型、指针、align、元数据），
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仅多一个 `volatile` 关键字；语义与 TransPyV 侧 `build_load(..., vol)` 对齐。
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"""
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def descr(self, buf: list[str]) -> None:
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[val] = self.operands
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if self.align is not None:
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align = ', align %d' % (self.align)
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else:
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align = ''
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buf.append("load volatile {0}, {1} {2}{3}{4}\n".format(
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self.type,
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val.type,
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val.get_reference(),
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align,
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self._stringify_metadata(leading_comma=True),
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))
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class _VolatileStoreInstr(ir.StoreInstr):
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"""带 LLVM `volatile` 限定符的 store 指令（与 _VolatileLoadInstr 同款理由）。"""
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def descr(self, buf: list[str]) -> None:
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val, ptr = self.operands
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if self.align is not None:
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align = ', align %d' % (self.align)
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else:
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align = ''
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buf.append("store volatile {0} {1}, {2} {3}{4}{5}\n".format(
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val.type,
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val.get_reference(),
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ptr.type,
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ptr.get_reference(),
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align,
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self._stringify_metadata(leading_comma=True),
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))
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class MemoryOpsMixin:
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def _register_local_heap_ptr(self, val: ir.Value, ClassName: str | None = None, VarName: str | None = None) -> None:
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if isinstance(val.type, ir.PointerType):
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pointee: ir.Type = val.type.pointee
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if isinstance(pointee, (ir.LiteralStructType, ir.IdentifiedStructType)):
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self._local_heap_ptrs.append((val, 'struct', ClassName))
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elif isinstance(pointee, ir.IntType) and pointee.width == 8:
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self._local_heap_ptrs.append((val, 'i8', ClassName))
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if VarName:
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self._var_to_heap_ptr[VarName] = val
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def _unregister_local_heap_ptr(self, val: ir.Value) -> None:
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self._local_heap_ptrs = [(v, t, cn) for v, t, cn in self._local_heap_ptrs if v is not val]
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def _emit_local_heap_frees(self) -> None:
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if not self._local_heap_ptrs or not self.builder:
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return
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deleted_objects: set[ir.Value] = set()
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for ptr, ptr_type, ClassName in self._local_heap_ptrs:
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if ptr_type == 'i8':
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Loaded_ptr: ir.Value = self.builder.load(ptr, name="load_ptr")
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null_ptr: ir.Constant = ir.Constant(ir.PointerType(ir.IntType(8)), None)
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is_null: ir.Value = self.builder.icmp_unsigned('==', Loaded_ptr, null_ptr, name="is_null")
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not_null_block: ir.Block = self.builder.append_basic_block(name="not_null")
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next_block: ir.Block = self.builder.append_basic_block(name="next")
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self.builder.cbranch(is_null, next_block, not_null_block)
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self.builder.position_at_end(not_null_block)
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if ClassName and self._has_function(f'{ClassName}.__del__'):
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cast_ptr: ir.Value
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if isinstance(ptr.type, ir.PointerType) and isinstance(ptr.type.pointee, ir.IntType) and ptr.type.pointee.width == 8:
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cast_ptr = self.builder.bitcast(ptr, ir.PointerType(self.structs[ClassName]), name=f"cast_{ClassName}")
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else:
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cast_ptr = ptr
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if cast_ptr not in deleted_objects:
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self.builder.call(self._get_function(f'{ClassName}.__del__'), [cast_ptr], name=f"call_{ClassName}.__del__")
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deleted_objects.add(cast_ptr)
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raw: ir.Value
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if ptr_type == 'struct':
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raw = self.builder.bitcast(ptr, ir.PointerType(ir.IntType(8)), name="local_free_cast")
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elif ptr_type == 'i8':
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raw = ptr
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else:
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continue
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free_type: ir.FunctionType = ir.FunctionType(ir.VoidType(), [ir.PointerType(ir.IntType(8))])
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free_func: ir.Function = self._get_or_declare_func('free', free_type)
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self.builder.call(free_func, [raw])
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if ptr_type == 'i8':
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self.builder.branch(next_block)
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self.builder.position_at_end(next_block)
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self._local_heap_ptrs = []
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def _RegisterTempPtr(self, val: ir.Value) -> None:
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if isinstance(val.type, ir.PointerType):
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pointee: ir.Type = val.type.pointee
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if isinstance(pointee, (ir.LiteralStructType, ir.IdentifiedStructType)):
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for CN, ST in self.structs.items():
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if pointee == ST:
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self._temp_struct_ptrs.append(val)
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return
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elif isinstance(pointee, ir.IntType) and pointee.width == 8:
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self._temp_struct_ptrs.append(val)
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def _UnregisterTempPtr(self, val: ir.Value) -> None:
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self._temp_struct_ptrs = [t for t in self._temp_struct_ptrs if t is not val]
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def _EmitTempFrees(self) -> None:
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if not self._temp_struct_ptrs or not self.builder:
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return
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for ptr in self._temp_struct_ptrs:
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raw: ir.Value
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if isinstance(ptr.type, ir.PointerType) and isinstance(ptr.type.pointee, (ir.LiteralStructType, ir.IdentifiedStructType)):
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raw = self.builder.bitcast(ptr, ir.PointerType(ir.IntType(8)), name="free_cast")
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elif isinstance(ptr.type, ir.PointerType) and isinstance(ptr.type.pointee, ir.IntType) and ptr.type.pointee.width == 8:
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raw = ptr
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else:
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continue
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free_type: ir.FunctionType = ir.FunctionType(ir.VoidType(), [ir.PointerType(ir.IntType(8))])
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free_func: ir.Function = self._get_or_declare_func('free', free_type)
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self.builder.call(free_func, [raw])
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self._temp_struct_ptrs = []
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def _ZeroConst(self, typ: ir.Type) -> ir.Constant:
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if isinstance(typ, ir.PointerType):
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return ir.Constant(typ, None)
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if isinstance(typ, (ir.LiteralStructType, ir.IdentifiedStructType)):
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return ir.Constant(typ, None)
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if isinstance(typ, ir.ArrayType):
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return ir.Constant(typ, None)
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return ir.Constant(typ, 0)
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def _alloca(self, typ: ir.Type, name: str = '', align: int | None = None, size: ir.Value | None = None) -> ir.AllocaInstr:
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if align is None:
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align = self._get_align(typ)
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instr: ir.AllocaInstr
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if size is not None:
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instr = self.builder.alloca(typ, size=size, name=name)
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else:
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instr = self.builder.alloca(typ, name=name)
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if align:
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instr.align = align
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return instr
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def _allocaEntry(self, typ: ir.Type, name: str = '', align: int | None = None) -> ir.AllocaInstr:
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if align is None:
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align = self._get_align(typ)
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saved_block: ir.Block = self.builder.block
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entry_block: ir.Block = self.func.entry_basic_block
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instr: ir.AllocaInstr
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if entry_block.instructions:
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first_instr: ir.Instruction = entry_block.instructions[0]
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self.builder.position_before(first_instr)
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instr = self.builder.alloca(typ, name=name)
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if align:
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instr.align = align
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self.builder.position_at_end(saved_block)
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else:
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self.builder.position_at_start(entry_block)
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instr = self.builder.alloca(typ, name=name)
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if align:
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instr.align = align
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self.builder.position_at_end(saved_block)
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return instr
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def _EmitLoad(self, ptr: ir.Value, name: str = '', align: int | None = None,
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volatile: bool = False) -> ir.Value:
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"""发射一条 load；volatile=True 时走 _VolatileLoadInstr（LLVM `load volatile`）。
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类型推断完全交给 LoadInstr 自身（与 llvmlite 原始路径同一套逻辑），
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不额外兜底：推不出类型时与原生 `builder.load` 一样直接抛错。
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"""
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if not volatile:
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return self.builder.load(ptr, name=name, align=align)
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instr: ir.LoadInstr = _VolatileLoadInstr(self.builder.block, ptr, name=name)
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instr.align = align
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self.builder._insert(instr)
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return instr
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def _EmitStore(self, val: ir.Value, ptr: ir.Value, align: int | None = None,
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volatile: bool = False) -> ir.StoreInstr:
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"""发射一条 store；volatile=True 时走 _VolatileStoreInstr（LLVM `store volatile`）。"""
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if not volatile:
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return self.builder.store(val, ptr, align=align)
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instr: ir.StoreInstr = _VolatileStoreInstr(self.builder.block, val, ptr)
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instr.align = align
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self.builder._insert(instr)
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return instr
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def _load(self, ptr: ir.Value, name: str = '', align: int | None = None,
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volatile: bool | None = None) -> ir.LoadInstr:
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if align is None:
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if isinstance(ptr.type, ir.PointerType):
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align = self._get_align(ptr.type.pointee)
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else:
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align = 0
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# volatile=None ⇒ 按登记名自动判定（变量自身/所指物/字段，见 _IsPtrVolatile）；
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# 显式传入 True/False 时以调用方为准。判定必须先于下方 bitcast（bitcast
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# 结果的名字不再是变量名，会丢登记名）。
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if volatile is None:
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volatile = self._IsPtrVolatile(ptr)
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if isinstance(ptr.type, ir.PointerType):
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pointee_type: ir.Type = ptr.type.pointee
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if isinstance(pointee_type, ir.IdentifiedStructType) and pointee_type.name in self.typedef_int_widths:
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width: int = self.typedef_int_widths[pointee_type.name]
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if width > 0:
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actual_type: ir.IntType = ir.IntType(width)
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bitcast_ptr: ir.Value = self.builder.bitcast(ptr, ir.PointerType(actual_type), name="typedef_bitcast_Load")
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return self._EmitLoad(bitcast_ptr, name=name, align=align, volatile=volatile)
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return self._EmitLoad(ptr, name=name, align=align, volatile=volatile)
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def _Load_var(self, name: str) -> ir.Value | None:
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if name in self._direct_values:
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return self._direct_values[name]
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if name in self.variables and self.variables[name] is not None:
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VarPtr: ir.Value = self.variables[name]
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if isinstance(VarPtr, ir.GlobalVariable) and isinstance(VarPtr.type, ir.PointerType) and isinstance(VarPtr.type.pointee, (ir.IdentifiedStructType, ir.LiteralStructType, ir.ArrayType)):
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return VarPtr
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if isinstance(VarPtr.type, ir.PointerType) and isinstance(VarPtr.type.pointee, (ir.IdentifiedStructType, ir.LiteralStructType, ir.ArrayType)):
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return VarPtr
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return self._load(VarPtr, name=name)
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if name in self.global_vars and name in self.module.globals:
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GVar: ir.GlobalVariable = self.module.globals[name]
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self.variables[name] = GVar
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if isinstance(GVar, ir.Function):
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return GVar
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if isinstance(GVar.type, ir.PointerType) and isinstance(GVar.type.pointee, (ir.IdentifiedStructType, ir.LiteralStructType, ir.ArrayType)):
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return GVar
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return self._load(GVar, name=name)
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if name in self.module.globals:
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GVar = self.module.globals[name]
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self.variables[name] = GVar
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if isinstance(GVar, ir.Function):
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return GVar
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if isinstance(GVar.type, ir.PointerType) and isinstance(GVar.type.pointee, (ir.IdentifiedStructType, ir.LiteralStructType, ir.ArrayType)):
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return GVar
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return self._load(GVar, name=name)
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return None
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def _coerce_value(self, val: ir.Value, target_type: ir.Type) -> ir.Value | None:
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if val.type == target_type:
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return val
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if isinstance(target_type, ir.IdentifiedStructType) and target_type.name in self.typedef_int_widths:
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if isinstance(val.type, ir.IntType):
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return val
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if isinstance(target_type, ir.IntType) and isinstance(val.type, ir.IntType):
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if target_type.width < val.type.width:
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return self.builder.trunc(val, target_type, name="trunc_store")
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elif val.type.width == 1:
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# i1 是布尔值（来自 icmp/fcmp/__contains__ 归一化），无符号语义，
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# 必须用 zext 而非 sext，否则 i1 的 1 会被符号扩展为 -1
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return self.builder.zext(val, target_type, name="zext_bool_store")
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else:
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return self.builder.sext(val, target_type, name="sext_store")
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if isinstance(target_type, ir.PointerType) and isinstance(val.type, ir.PointerType):
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if isinstance(val, ir.Constant) and val.constant is None:
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return ir.Constant(target_type, None)
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return self.builder.bitcast(val, target_type, name="ptr_bitcast_store")
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if isinstance(target_type, ir.PointerType) and isinstance(val.type, ir.IntType):
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if val.type.width < 64:
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val = self.builder.zext(val, ir.IntType(64), name="zext_ptr_store")
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return self.builder.inttoptr(val, target_type, name="int_to_ptr_store")
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if isinstance(target_type, ir.IntType) and isinstance(val.type, ir.PointerType):
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if isinstance(val, ir.Constant) and val.constant is None:
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# null 指针常量赋给 int 字段 → 0。绝不能对 null 做 load
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# （此前 pointee.width == target.width 时直接 load null，
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# 生成 `load i32, i32* null` → ASAN access-violation）
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return ir.Constant(target_type, 0)
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# 指针 → 整数：隐式转换一律禁止（与 TransPyV coerce_to_type 同口径）。
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# 原先三条路径都是静默的：同宽直接 load 指针所指物的位模式、≤8 位 load
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# 首字节、其余 ptrtoint 截断地址——把"类型写错"藏到运行期。
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from lib.core.LLVMCG.FuncGen import FailFastError
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raise FailFastError(
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f"指针隐式转整数已禁止：不能把指针类型 {val.type} 赋给整数类型 {target_type}；"
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f"如需转换请显式 cast（如 t.CUInt64T(p) / t.CInt(p)）"
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)
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if isinstance(target_type, ir.FloatType) and isinstance(val.type, ir.DoubleType):
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return self.builder.fptrunc(val, target_type, name="fptrunc_store")
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if isinstance(target_type, ir.DoubleType) and isinstance(val.type, ir.FloatType):
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return self.builder.fpext(val, target_type, name="fpext_store")
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if isinstance(target_type, ir.IntType) and isinstance(val.type, (ir.FloatType, ir.DoubleType)):
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return self.builder.fptosi(val, target_type, name="fptosi_store")
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if isinstance(target_type, (ir.FloatType, ir.DoubleType)) and isinstance(val.type, ir.IntType):
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return self.builder.sitofp(val, target_type, name="sitofp_store")
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if isinstance(target_type, ir.ArrayType) and isinstance(val.type, ir.ArrayType):
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if target_type.count == val.type.count and target_type.element == val.type.element:
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return val
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if (isinstance(target_type.element, ir.IntType) and target_type.element.width == 8
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and isinstance(val.type.element, ir.IntType) and val.type.element.width == 8):
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if target_type.count > val.type.count:
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padded: list[ir.Constant] = list(val.constant) if hasattr(val, 'constant') else []
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if padded and len(padded) == val.type.count:
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padded.extend([ir.Constant(ir.IntType(8), 0)] * (target_type.count - val.type.count))
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return ir.Constant(target_type, padded)
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elif target_type.count < val.type.count:
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trimmed: list[ir.Constant] = list(val.constant) if hasattr(val, 'constant') else []
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if trimmed and len(trimmed) == val.type.count:
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return ir.Constant(target_type, trimmed[:target_type.count])
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if isinstance(val.type, ir.PointerType) and not isinstance(target_type, ir.PointerType):
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if val.type.pointee == target_type:
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return self.builder.load(val, name="Load_struct_for_store")
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if isinstance(val.type.pointee, ir.IdentifiedStructType) and isinstance(target_type, ir.IdentifiedStructType):
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if val.type.pointee.name == target_type.name:
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Loaded: ir.Value = self.builder.load(val, name="Load_struct_for_store")
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if Loaded.type == target_type:
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return Loaded
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return None
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def _store(self, val: ir.Value, ptr: ir.Value, align: int | None = None,
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volatile: bool | None = None) -> ir.StoreInstr:
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if align is None:
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if isinstance(ptr.type, ir.PointerType):
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align = self._get_align(ptr.type.pointee)
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else:
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align = 0
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# volatile=None ⇒ 按登记名自动判定（见 _IsPtrVolatile）。判定先于下方任何
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# ptr 重建（null_struct_ptr_cast 等），否则会丢登记名。
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if volatile is None:
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volatile = self._IsPtrVolatile(ptr)
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if isinstance(ptr.type, ir.PointerType):
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target_type: ir.Type = ptr.type.pointee
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if isinstance(target_type, ir.IdentifiedStructType) and target_type.name in self.typedef_int_widths:
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if isinstance(val.type, ir.IntType):
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width: int = self.typedef_int_widths[target_type.name]
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if width > 0:
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actual_type: ir.IntType = ir.IntType(width)
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bitcast_ptr: ir.Value = self.builder.bitcast(ptr, ir.PointerType(actual_type), name="typedef_bitcast")
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if val.type.width != actual_type.width:
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if val.type.width > actual_type.width:
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val = self.builder.trunc(val, actual_type, name="trunc_typedef")
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else:
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val = self.builder.zext(val, actual_type, name="zext_typedef")
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return self._EmitStore(val, bitcast_ptr, align=align, volatile=volatile)
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if val.type != target_type:
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if isinstance(val, ir.Constant) and val.constant is None:
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if isinstance(target_type, ir.PointerType):
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val = ir.Constant(target_type, None)
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elif isinstance(target_type, ir.IdentifiedStructType):
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val = ir.Constant(ir.PointerType(target_type), None)
|
||
ptr = self.builder.bitcast(ptr, ir.PointerType(ir.PointerType(target_type)), name="null_struct_ptr_cast")
|
||
elif isinstance(target_type, ir.IntType):
|
||
# null 指针常量赋给 int 字段 → 0（与 _coerce_value 一致，
|
||
# 防止 `store i32* null, i32*` 类型错乱 IR）
|
||
val = ir.Constant(target_type, 0)
|
||
else:
|
||
coerced: ir.Value | None = self._coerce_value(val, target_type)
|
||
if coerced is not None:
|
||
val = coerced
|
||
else:
|
||
src_info: str = self._get_node_info()
|
||
raise TypeError(f"cannot store {val.type} to {ptr.type}: mismatching types{src_info}")
|
||
return self._EmitStore(val, ptr, align=align, volatile=volatile)
|
||
|
||
def _get_var_ptr(self, name: str) -> ir.Value | None:
|
||
if name in self._reg_values:
|
||
val: ir.Value = self._reg_values[name]
|
||
var: ir.AllocaInstr = self._alloca(val.type, name=name)
|
||
self._store(val, var)
|
||
self.variables[name] = var
|
||
del self._reg_values[name]
|
||
return var
|
||
if name in self.variables and self.variables[name] is not None:
|
||
return self.variables[name]
|
||
return None |