Introduce middle-end

src/pysrc/sysy/utils/ir_parser.py

@@ -0,0 +1,22 @@
+from llvmlite import ir
+
+def parse_llvm_ir(ir_text: str) -> MiddleFunction:
+    """将 LLVM IR 文本转换为 MiddleIR 结构（简化版）"""
+    module = ir.Module()
+    module.parse(ir_text)
+    
+    # 提取第一个函数
+    func = list(module.functions)[0]
+    middle_func = MiddleFunction(func.name)
+    
+    # 转换基本块和指令
+    for block in func.blocks:
+        mid_block = MiddleBasicBlock(block.name)
+        for instr in block.instructions:
+            opcode = instr.opcode
+            operands = [str(op) for op in instr.operands]
+            mid_instr = MiddleInstruction(opcode, operands)
+            mid_block.instructions.append(mid_instr)
+        middle_func.basic_blocks.append(mid_block)
+    
+    return middle_func