refactor(ast2ir): 重构ABI类型系统并修复union结构问题
- 将scc_ast_def.h中的attr_of从union改为struct以修复结构定义问题 - 添加type_abi依赖到ast2ir模块的cbuild.toml配置文件中 - 重命名scc_ast2ir.h中的abi字段为type_abi,并更新相关初始化函数签名 - 移除废弃的scc_abi_type.h和相关平台ABI头文件 - 添加辅助函数is_variadic_marker和fixed_param_count用于处理可变参数 - 添加数组和聚合类型初始化的辅助函数
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@@ -12,8 +12,7 @@ typedef struct {
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scc_hashtable_t continue_cache; ///< continue cache
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scc_hashtable_t symtab; ///< symbol to ir_ref
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scc_hashtable_t type_cache; ///< scc_ast_canon_type_t* -> scc_hir_type_ref_t
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// scc_strpool_t strpool; ///< string pool
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const scc_abi_type_calc_t *abi;
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const scc_type_abi_t *type_abi;
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cbool hint_using_value; // 转换时尽可能使用value而不是alloc
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scc_ast_module_t *ast_module;
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@@ -23,7 +22,7 @@ static inline scc_hir_module_t *scc_ast2ir_mir_module(scc_ast2ir_ctx_t *ctx) {
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return &ctx->builder.cprog->module;
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}
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void scc_ast2ir_ctx_init(scc_ast2ir_ctx_t *ctx, const scc_abi_type_calc_t *abi,
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void scc_ast2ir_ctx_init(scc_ast2ir_ctx_t *ctx, const scc_type_abi_t *type_abi,
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scc_ast_module_t *ast_module, scc_hir_cprog_t *cprog);
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void scc_ast2ir_ctx_drop(scc_ast2ir_ctx_t *ctx);
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@@ -42,6 +41,38 @@ scc_hir_type_ref_t
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scc_ast2ir_parse_base_type(scc_ast2ir_ctx_t *ctx,
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const scc_ast_qual_type_t *ast_type);
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// Utils
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// 判断 AST 参数是否为 ... 生成的假 VA_LIST 参数
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static cbool is_variadic_marker(const scc_ast_decl_t *decl_param) {
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return decl_param->name == nullptr &&
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decl_param->param.type->base.type == SCC_AST_TYPE_BUILTIN &&
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scc_ast_canon_type(decl_param->param.type)->builtin.type ==
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SCC_AST_BUILTIN_TYPE_VA_LIST;
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}
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// 计算函数类型中的固定参数个数(去掉尾部的 ... 标记)
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static int fixed_param_count(const scc_ast_canon_type_t *canon) {
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int n = (int)scc_vec_size(canon->function.params);
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if (n > 0) {
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const scc_ast_decl_t *last =
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scc_vec_at(canon->function.params, (usize)(n - 1));
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if (is_variadic_marker(last))
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return n - 1;
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}
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return n;
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}
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void emit_array_initialization(scc_ast2ir_ctx_t *ctx,
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scc_hir_value_ref_t array_ptr,
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const scc_hir_type_t *array_type,
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const scc_ast_expr_t *init_expr);
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void emit_aggregate_initialization(scc_ast2ir_ctx_t *ctx,
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scc_hir_value_ref_t base_ptr,
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const scc_hir_type_t *type,
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const scc_ast_expr_t *init_expr);
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// ====== 类型提升(Type Promotion)接口 ======
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/**
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@@ -1,106 +0,0 @@
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/**
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* @file scc_abi_type.h
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* @brief 目标无关的类型布局描述接口
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* @note 本模块仅定义接口。
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*/
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#ifndef __SCC_ABI_TYPE_H__
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#define __SCC_ABI_TYPE_H__
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#include <scc_core.h>
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/**
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* @brief ABI 基础类型类别枚举。
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*
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* 用于快速查询目标预定义的基本类型属性。复杂类型(指针、数组、结构体)
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* 通过组合与递归计算。
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*/
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typedef enum scc_abi_base_type_kind {
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SCC_ABI_TYPE_VOID,
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SCC_ABI_TYPE_VA_LIST,
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SCC_ABI_TYPE_CHAR,
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SCC_ABI_TYPE_I_CHAR,
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SCC_ABI_TYPE_U_CHAR,
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SCC_ABI_TYPE_I_SHORT,
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SCC_ABI_TYPE_U_SHORT,
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SCC_ABI_TYPE_I_INT,
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SCC_ABI_TYPE_U_INT,
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SCC_ABI_TYPE_I_LONG,
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SCC_ABI_TYPE_U_LONG,
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SCC_ABI_TYPE_I_LONG_LONG,
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SCC_ABI_TYPE_U_LONG_LONG,
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SCC_ABI_TYPE_PTR,
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SCC_ABI_TYPE_FLOAT,
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SCC_ABI_TYPE_DOUBLE,
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SCC_ABI_TYPE_USIZE,
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SCC_ABI_TYPE_ISIZE,
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/* 可扩展:I128, F16, F128, VECTOR, ... */
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} scc_abi_base_type_kind_t;
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/**
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* @brief 单个类型的布局信息。
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*/
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typedef struct scc_abi_type_layout {
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int size; /**< 类型占用的字节数 */
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int alignment; /**< 类型的对齐要求(字节边界) */
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} scc_abi_type_layout_t;
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typedef struct {
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scc_abi_base_type_kind_t kind;
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scc_abi_type_layout_t layout;
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} scc_abi_base_type_impl_t;
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#define SCC_ABI_BASE_TYPE_IMPL(type, bytes_size, alians) \
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[type] = { \
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.kind = type, \
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.layout.size = bytes_size, \
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.layout.alignment = alians, \
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}
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/**
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* @brief 单个结构体字段的布局信息。
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* 由目标布局算法填充,用于 IR 的 getelementptr 常量索引计算。
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*/
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typedef struct scc_abi_field_layout {
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int offset; /**< 字段相对于结构体基址的字节偏移 */
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int size; /**< 字段自身大小 */
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int alignment; /**< 字段的对齐要求 */
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} scc_abi_field_layout_t;
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typedef SCC_VEC(scc_abi_field_layout_t) scc_abi_field_layout_vec_t;
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/**
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* @brief 获取基本类型的布局信息。
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*
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* 目标必须实现此函数,为每个 scc_abi_base_type_kind_t 返回正确的
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* size/alignment。
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*
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* @param kind 基本类型类别
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* @param layout 输出参数,存放布局信息
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* @return 成功返回 0,若 kind 不支持则返回 -1
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*/
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static inline void
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scc_abi_get_base_type_layout(const scc_abi_base_type_impl_t *impls,
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scc_abi_base_type_kind_t kind,
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scc_abi_type_layout_t *layout) {
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if (impls[kind].kind != kind)
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Panic("invalid base type kind");
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*layout = impls[kind].layout;
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}
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typedef struct scc_abi_type_calc scc_abi_type_calc_t;
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void scc_abi_compute_ast_type_layout(const scc_abi_type_calc_t *ctx, void *type,
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scc_abi_type_layout_t *layout);
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typedef struct scc_abi_type_calc {
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void *ctx;
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const scc_abi_base_type_impl_t *impls;
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/// @brief 可以是系统内置的结构,比如 struct int128_t
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void (*compute_type_layout)(const scc_abi_type_calc_t *ctx, void *type,
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scc_abi_type_layout_t *layout);
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/// @brief
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void (*compute_field_layout)(const scc_abi_type_calc_t *ctx, void *type,
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scc_abi_field_layout_vec_t *field_layouts);
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} scc_abi_type_calc_t;
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#endif /* __SCC_ABI_TYPE_H__ */
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@@ -1,4 +0,0 @@
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#ifndef __SCC_ABI_DUMMY_H__
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#define __SCC_ABI_DUMMY_H__
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#endif /* __SCC_ABI_DUMMY_H__ */
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@@ -1,49 +0,0 @@
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#ifndef __SCC_ABI_WIN_X64_PC_H__
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#define __SCC_ABI_WIN_X64_PC_H__
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/**
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* @brief Windows x64 ABI Type
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* @details
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* https://learn.microsoft.com/zh-cn/cpp/build/x64-software-conventions?view=msvc-180
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*/
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#include "../scc_type_abi.h"
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static const scc_abi_base_type_impl_t scc_abi_base_type_impls[] = {
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/**
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* @brief
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* https://learn.microsoft.com/zh-cn/cpp/build/x64-calling-convention?view=msvc-180#varargs
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* 如果通过 vararg (例如省略号参数) 传递参数,则需遵守常规寄存器参数传递约定.
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* 该约定规定了将第 5个及后面的参数溢出到堆栈中.
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* 被调用方负责转储带有其地址的参数.
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* (仅适用于浮点值)如果被调用方希望在整数寄存器中使用浮点值,则整数寄存器和浮点数寄存器都必须包含该值.
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*/
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_VA_LIST, 4, 4),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_VOID, 0, 0),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_CHAR, 1, 1),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_I_CHAR, 1, 1),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_U_CHAR, 1, 1),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_I_SHORT, 2, 2),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_U_SHORT, 2, 2),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_I_INT, 4, 4),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_U_INT, 4, 4),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_I_LONG, 4, 4),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_U_LONG, 4, 4),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_I_LONG_LONG, 8, 8),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_U_LONG_LONG, 8, 8),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_PTR, 8, 8),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_FLOAT, 4, 4),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_DOUBLE, 8, 8),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_USIZE, 8, 8),
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SCC_ABI_BASE_TYPE_IMPL(SCC_ABI_TYPE_ISIZE, 8, 8),
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};
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static const scc_abi_type_calc_t scc_ast_abi_impl = {
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.impls = scc_abi_base_type_impls,
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.ctx = nullptr,
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.compute_type_layout = scc_abi_compute_ast_type_layout,
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.compute_field_layout = nullptr,
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};
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#ifdef SCC_ABI_IMPLIMENT
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#endif
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#endif /* __SCC_ABI_WIN_X64_PC_H__ */
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