Some simple information syncing

includes/llvmlite/__builder.py

@@ -847,10 +847,28 @@ def build_ui2fp(builder: IRBuilder | t.CPtr, val: Value | t.CPtr,
 # ============================================================
 # GEP 指令
 # ============================================================
+def _is_ptr_type(ty: LLVMType | t.CPtr) -> int:
+    """检查 ty 是否是 Ptr 类型（独立函数，避免嵌套 match 的编译器 BUG）"""
+    if ty is None:
+        return 0
+    match ty:
+        case LLVMType.Ptr(pointee):
+            return 1
+        case _:
+            return 0
+
+
 def build_gep(builder: IRBuilder | t.CPtr, elem_ty: LLVMType | t.CPtr,
               ptr: Value | t.CPtr, idx: Value | t.CPtr) -> Value | t.CPtr:
     """%N = getelementptr <elem_ty>, <ptr_ty> <ptr>, <idx_ty> <idx>"""
     if builder is None or ptr is None or idx is None: return None
+    # 防御性检查: ptr.Ty 必须是指针类型，否则 llc 报错
+    # "base of getelementptr must be a pointer"
+    # 当 translate_value 返回非指针值（如 i32 常量 0）时，
+    # 直接 GEP 会导致 llc 编译失败
+    if _is_ptr_type(ptr.Ty) == 0:
+        stdio.printf("[GEP-ERR] base not pointer, skip GEP\n")
+        return None
     pool: memhub.MemBuddy | t.CPtr = builder.Pool
     name: t.CChar | t.CPtr = _alloc_ssa_name(builder)
     elem_ty_s: t.CChar | t.CPtr = _type_str(builder, elem_ty)
@@ -918,7 +936,6 @@ def build_gep_struct(builder: IRBuilder | t.CPtr, struct_ty: LLVMType | t.CPtr,
     line: t.CChar | t.CPtr = pool.alloc(2048)
     if line is None:
         stdio.printf("[BGS] line alloc None\n")
-        stdio.fflush(0)
         return None
     viperlib.snprintf(line, 2048, "%s = getelementptr %s, %s %s, i32 0, i32 %d",
                       name, struct_ty_s, ptr_ty_s, ptr.Name, field_idx)
@@ -928,14 +945,12 @@ def build_gep_struct(builder: IRBuilder | t.CPtr, struct_ty: LLVMType | t.CPtr,
     result_ty: LLVMType | t.CPtr = pool.alloc(LLVMType.__sizeof__())
     if result_ty is None:
         stdio.printf("[BGS] result_ty alloc None\n")
-        stdio.fflush(0)
     else:
         string.memset(result_ty, 0, LLVMType.__sizeof__())
         c.DerefAs(result_ty, LLVMType.Ptr(field_ty))
     rv: Value | t.CPtr = SSAValue(pool, result_ty, name)
     if rv is None:
         stdio.printf("[BGS] SSAValue None\n")
-        stdio.fflush(0)
     return rv