refactor(ast2ir): 移除全局值向量的直接推送
移除了在全局变量声明处理中对全局值向量的直接推送操作, 以优化内存管理和值引用的一致性。 fix(hir): 修复表达式索引类型检查中的空指针访问 修正了表达式处理中索引类型的获取方式,从使用类型指针改为使用类型引用, 并更新了空值检查条件以避免潜在的空指针解引用问题。 perf(hir): 优化类型大小计算性能 将类型大小计算逻辑从模块内部实现替换为使用HIR布局系统提供的统一接口, 提高计算效率和代码复用性。 refactor(hir): 统一字符串常量构建流程 重构了字符串常量的创建过程,简化了类型定义步骤并确保包含正确的空终止符。 fix(dump): 改进全局分配值转储的健壮性 添加了对空初始化值的检查,当全局分配没有初始值时显示零初始化器, 避免访问空指针导致的程序崩溃。 refactor(x86): 增强操作数编码的安全性 在x86指令编码中添加了对操作数字节对齐的断言检查,确保所有操作数都符合 字节边界对齐要求。 chore(build): 更新头文件包含路径和初始化参数 调整了头文件包含路径格式,并更新了HIR程序和模块的初始化函数签名, 传入ABI参数以支持更准确的目标平台特性。
This commit is contained in:
@@ -508,7 +508,6 @@ void scc_ast2ir_decl(scc_ast2ir_ctx_t *ctx, const scc_ast_decl_t *decl,
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}
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alloc_val_node = scc_hir_builder_global_alloca(
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&ctx->builder, final_type_ref, init_val);
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scc_vec_push(ctx->builder.cprog->global_vals, alloc_val_node);
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} else {
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alloc_val_node = scc_hir_builder_alloca(&ctx->builder,
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final_type_ref, decl->name);
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@@ -647,9 +647,9 @@ scc_hir_value_ref_t scc_ast2ir_expr(scc_ast2ir_ctx_t *ctx,
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scc_hir_value_ref_t index =
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scc_ast2ir_expr(ctx, expr->subscript.index, false);
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// 保证 index 至少 64 位,防止后端寄存器分配时宽度错误
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scc_hir_type_t *idx_type =
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scc_hir_module_get_type_by_value(scc_ast2ir_mir_module(ctx), index);
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if (idx_type != nullptr &&
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scc_hir_type_ref_t idx_type =
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scc_hir_module_get_value(scc_ast2ir_mir_module(ctx), index)->type;
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if (idx_type != SCC_CFG_ID_nullptr &&
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scc_hir_module_type_size(scc_ast2ir_mir_module(ctx), idx_type) <
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sizeof(void *) * 8) {
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scc_hir_type_t ptrw_desc;
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@@ -720,14 +720,10 @@ scc_hir_value_ref_t scc_ast2ir_expr(scc_ast2ir_ctx_t *ctx,
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// 这里用简单的启发式:根据大小变化决定
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scc_hir_type_t *src_type = scc_hir_module_get_type_by_value(
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scc_ast2ir_mir_module(ctx), operand);
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scc_hir_type_t *dst_type =
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scc_hir_module_get_type(scc_ast2ir_mir_module(ctx), target_type);
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usize src_size = scc_hir_module_type_size(
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scc_ast2ir_mir_module(ctx),
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src_type); // 你可能有这个函数,否则自行计算
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usize src_size =
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scc_hir_module_type_size(scc_ast2ir_mir_module(ctx), operand);
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usize dst_size =
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scc_hir_module_type_size(scc_ast2ir_mir_module(ctx), dst_type);
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scc_hir_module_type_size(scc_ast2ir_mir_module(ctx), target_type);
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int conv_kind;
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if (dst_size > src_size) {
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@@ -776,10 +772,8 @@ scc_hir_value_ref_t scc_ast2ir_expr(scc_ast2ir_ctx_t *ctx,
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}
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// 2. 计算大小
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const scc_hir_type_t *type =
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scc_hir_module_get_type(scc_ast2ir_mir_module(ctx), hir_type);
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usize dst_size =
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scc_hir_module_type_size(scc_ast2ir_mir_module(ctx), type);
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scc_hir_module_type_size(scc_ast2ir_mir_module(ctx), hir_type);
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scc_ap_t val;
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val.data.digit = dst_size / 8;
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@@ -1,7 +1,7 @@
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#ifndef __SCC_HIR_LAYOUT_H__
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#define __SCC_HIR_LAYOUT_H__
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#include <scc_hir_module.h>
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#include "scc_hir_module.h"
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#include <scc_type_abi.h>
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#define SCC_ALIGN_UP(x, align) (((x) + (align) - 1) & ~((align) - 1))
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@@ -30,8 +30,8 @@ int scc_hir_type_align(scc_hir_module_t *mod, scc_hir_type_ref_t type,
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int scc_hir_field_offset(scc_hir_module_t *mod, scc_hir_type_ref_t type,
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int field_idx, const scc_type_abi_t *abi);
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scc_hir_aggregate_layout_t *
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scc_hir_aggregate_layout(scc_hir_module_t *mod, scc_hir_type_ref_t type,
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scc_hir_aggregate_layout_t *scc_hir_aggregate_layout(scc_hir_module_t *mod,
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scc_hir_type_ref_t type,
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const scc_type_abi_t *abi);
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void scc_hir_aggregate_layout_free(scc_hir_aggregate_layout_t *layout);
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@@ -4,9 +4,11 @@
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#include "scc_hir_def.h"
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#include <scc_cfg.h>
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#include <scc_hashtable.h>
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#include <scc_type_abi.h>
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typedef struct {
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scc_cfg_module_t cfg_module;
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const scc_type_abi_t *abi;
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scc_cfg_id_t value_uid;
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scc_cfg_id_t type_uid;
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@@ -20,7 +22,7 @@ typedef struct {
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SCC_VEC(scc_hir_func_meta_t *) funcs_meta;
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} scc_hir_module_t;
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void scc_hir_module_init(scc_hir_module_t *ctx);
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void scc_hir_module_init(scc_hir_module_t *ctx, const scc_type_abi_t *abi);
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void scc_hir_module_drop(scc_hir_module_t *ctx);
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scc_hir_type_ref_t scc_hir_module_add_type(scc_hir_module_t *ctx,
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const scc_hir_type_t *type);
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@@ -38,7 +40,7 @@ scc_hir_bblock_t *scc_hir_module_get_bblock(scc_hir_module_t *ctx,
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scc_hir_bblock_ref_t ref);
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scc_hir_func_t *scc_hir_module_get_func(scc_hir_module_t *ctx,
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scc_hir_func_ref_t ref);
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usize scc_hir_module_type_size(scc_hir_module_t *ctx, scc_hir_type_t *type);
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usize scc_hir_module_type_size(scc_hir_module_t *ctx, scc_hir_type_ref_t ref);
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static inline scc_hir_type_t *
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scc_hir_module_get_type_by_value(scc_hir_module_t *ctx,
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@@ -1,7 +1,6 @@
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#ifndef __SCC_HIR_PROG_H__
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#define __SCC_HIR_PROG_H__
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#include "scc_hir_def.h"
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#include "scc_hir_module.h"
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typedef struct scc_hir_cprog {
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@@ -11,7 +10,7 @@ typedef struct scc_hir_cprog {
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scc_hir_func_ref_vec_t func_decls; /* 所有函数包括定义的声明 */
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} scc_hir_cprog_t;
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void scc_hir_cprog_init(scc_hir_cprog_t *in);
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void scc_hir_cprog_init(scc_hir_cprog_t *in, const scc_type_abi_t *abi);
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void scc_hir_cprog_drop(scc_hir_cprog_t *in);
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#endif /* __SCC_HIR_PROG_H__ */
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@@ -285,21 +285,7 @@ scc_hir_type_ref_t scc_hir_builder_type(scc_hir_builder_t *builder,
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scc_hir_value_ref_t scc_hir_builder_const_string(scc_hir_builder_t *builder,
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const char *str, usize len) {
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SCC_HIR_BUILDER_CHECK_NO_BORROW(builder);
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scc_hir_type_ref_t u8_type = scc_hir_builder_type_u8(builder);
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scc_hir_type_t array_type = {
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.tag = SCC_HIR_TYPE_ARRAY,
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.data.array.base = u8_type,
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.data.array.len = len - 1, // 包含 nullptr 结尾
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};
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scc_hir_type_ref_t array_type_ref =
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scc_hir_builder_type(builder, &array_type);
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// 5. 创建聚合节点
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scc_hir_value_t const_array_value = {
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.tag = SCC_HIR_VALUE_TAG_ARRAY,
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.type = array_type_ref,
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.data.const_array.base_type = u8_type,
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};
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scc_str_t buf;
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scc_str_init(&buf);
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// FIXME content to real string
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@@ -348,8 +334,23 @@ scc_hir_value_ref_t scc_hir_builder_const_string(scc_hir_builder_t *builder,
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}
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}
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}
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scc_str_append_ch(&buf, '\0');
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usize buf_len = scc_str_len(&buf);
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usize buf_len = scc_str_len(&buf) + 1;
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scc_hir_type_ref_t u8_type = scc_hir_builder_type_u8(builder);
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scc_hir_type_t array_type = {
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.tag = SCC_HIR_TYPE_ARRAY,
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.data.array.base = u8_type,
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.data.array.len = buf_len, // 包含 '\0' 结尾
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};
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scc_hir_type_ref_t array_type_ref =
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scc_hir_builder_type(builder, &array_type);
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scc_hir_value_t const_array_value = {
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.tag = SCC_HIR_VALUE_TAG_ARRAY,
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.type = array_type_ref,
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.data.const_array.base_type = u8_type,
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};
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scc_vec_unsafe_from_buffer(const_array_value.data.const_array.fields,
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(u8 *)scc_str_move_cstr(&buf), buf_len);
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scc_hir_value_ref_t const_array_ref =
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@@ -327,7 +327,11 @@ void scc_hir_dump_value_linear(scc_hir_dump_t *ctx,
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case SCC_HIR_VALUE_TAG_GLOBAL_ALLOC:
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scc_tree_dump_append_fmt(ctx->dump_ctx, "global %s", value->name);
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scc_tree_dump_begin_line(ctx->dump_ctx);
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if (value->data.global_alloc.value) {
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scc_hir_dump_value_linear(ctx, value->data.global_alloc.value);
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} else {
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scc_tree_dump_append(ctx->dump_ctx, "<zero initializer>");
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}
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break;
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case SCC_HIR_VALUE_TAG_ARRAY:
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scc_tree_dump_append(ctx->dump_ctx, "const_array ");
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@@ -1,7 +1,10 @@
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#include <scc_hir_layout.h>
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#include <scc_hir_module.h>
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void scc_hir_module_init(scc_hir_module_t *ctx) {
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void scc_hir_module_init(scc_hir_module_t *ctx, const scc_type_abi_t *abi) {
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scc_cfg_module_init(&ctx->cfg_module);
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Assert(abi != nullptr);
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ctx->abi = abi;
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scc_vec_init(ctx->values);
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scc_vec_init(ctx->types);
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@@ -126,45 +129,7 @@ scc_hir_func_t *scc_hir_module_get_func(scc_hir_module_t *ctx,
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return scc_cfg_module_unsafe_get_func(&ctx->cfg_module, ref);
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}
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usize scc_hir_module_type_size(scc_hir_module_t *ctx, scc_hir_type_t *type) {
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Assert(type != nullptr);
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switch (type->tag) {
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case SCC_HIR_TYPE_unknown:
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case SCC_HIR_TYPE_void:
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return 0;
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case SCC_HIR_TYPE_i8:
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case SCC_HIR_TYPE_u8:
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return 8;
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case SCC_HIR_TYPE_i16:
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case SCC_HIR_TYPE_u16:
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return 16;
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case SCC_HIR_TYPE_f32:
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case SCC_HIR_TYPE_i32:
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case SCC_HIR_TYPE_u32:
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return 32;
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case SCC_HIR_TYPE_f64:
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case SCC_HIR_TYPE_i64:
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case SCC_HIR_TYPE_u64:
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return 64;
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case SCC_HIR_TYPE_FUNC:
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case SCC_HIR_TYPE_PTR: {
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// TODO
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// 目标指针大小,可以定义为 64(64位)或从 ABI 获取
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// 假设你的目标架构是 64 位
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return 64;
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}
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case SCC_HIR_TYPE_ARRAY: {
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usize elem_size = scc_hir_module_type_size(
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ctx, scc_hir_module_get_type(ctx, type->data.array.base));
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return elem_size * type->data.array.len;
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}
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case SCC_HIR_TYPE_STRUCT:
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case SCC_HIR_TYPE_UNION:
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// 暂时无法计算,保守返回 0 或报错
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LOG_ERROR("Cannot compute size of struct/union without layout info");
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return 0;
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default:
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LOG_ERROR("Unknown type tag %d", type->tag);
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return 0;
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}
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usize scc_hir_module_type_size(scc_hir_module_t *ctx, scc_hir_type_ref_t ref) {
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Assert(ref != 0);
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return scc_hir_type_size(ctx, ref, ctx->abi);
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}
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@@ -1,10 +1,11 @@
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#include <scc_hir_prog.h>
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void scc_hir_cprog_init(scc_hir_cprog_t *in) {
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void scc_hir_cprog_init(scc_hir_cprog_t *in, const scc_type_abi_t *abi) {
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Assert(abi != nullptr);
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scc_vec_init(in->func_decls);
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scc_vec_init(in->func_defs);
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scc_vec_init(in->global_vals);
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scc_hir_module_init(&in->module);
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scc_hir_module_init(&in->module, abi);
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}
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void scc_hir_cprog_drop(scc_hir_cprog_t *in) {
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@@ -5,6 +5,7 @@
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#include <scc_hashtable.h>
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#include <scc_hir2lir.h>
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#include <scc_hir_layout.h>
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/* ---------- 转换上下文 ---------- */
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typedef struct {
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@@ -90,7 +91,7 @@ static void ir_type_to_lir_size_ext(scc_hir_type_t *type, u8 *out_size,
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*out_ext = SCC_LIR_EXT_NONE;
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break;
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default:
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Panic("unsupported IR type in lowering");
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Panic("unsupported IR type in lowering at %d", type->tag);
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}
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}
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@@ -386,14 +387,12 @@ static void translate_hir_value(ir2lir_ctx_t *ctx, scc_hir_value_t *value,
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// 2. 获取元素类型和大小
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scc_hir_type_t *ptr_type =
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scc_hir_module_get_type(ctx->hir_module, value->type);
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scc_hir_type_t *pointee = NULL;
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scc_hir_type_ref_t pointee = SCC_CFG_ID_nullptr;
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if (ptr_type->tag == SCC_HIR_TYPE_PTR) {
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pointee = scc_hir_module_get_type(ctx->hir_module,
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ptr_type->data.pointer.base);
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pointee = ptr_type->data.pointer.base;
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} else if (ptr_type->tag == SCC_HIR_TYPE_ARRAY) {
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// 数组名退化为指针,元素类型为数组的元素类型
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pointee = scc_hir_module_get_type(ctx->hir_module,
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ptr_type->data.array.base);
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pointee = ptr_type->data.array.base;
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} else {
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Panic("GET_ELEM_PTR on non-pointer/array type");
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}
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@@ -414,10 +413,8 @@ static void translate_hir_value(ir2lir_ctx_t *ctx, scc_hir_value_t *value,
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} break;
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case SCC_HIR_VALUE_TAG_ALLOC: {
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Assert(ty != nullptr);
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scc_hir_type_t *alloc_ty =
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scc_hir_module_get_type(ctx->hir_module, ty->data.pointer.base);
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int alloc_size_bits =
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scc_hir_module_type_size(ctx->hir_module, alloc_ty);
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scc_hir_module_type_size(ctx->hir_module, ty->data.pointer.base);
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scc_lir_instr_t instr = {.op = SCC_LIR_ALLOCA,
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.size_bits = SCC_LIR_SIZE_64,
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.to = SCC_LIR_VREG(dst_vreg),
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@@ -506,12 +503,10 @@ static void translate_hir_value(ir2lir_ctx_t *ctx, scc_hir_value_t *value,
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scc_lir_builder_add_instr(ctx, &instr);
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} else {
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// 计算源类型宽度
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scc_hir_type_t *src_type = scc_hir_module_get_type(
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int from_size_bits = scc_hir_module_type_size(
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ctx->hir_module, scc_hir_module_get_value(
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ctx->hir_module, value->data.conv.operand)
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->type);
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int from_size_bits =
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scc_hir_module_type_size(ctx->hir_module, src_type);
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scc_lir_instr_t instr = {.op = SCC_LIR_EXTEND,
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.size_bits = size_bits,
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.ext = conv_ext,
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@@ -671,13 +666,27 @@ void scc_hir2lir(scc_lir_module_t *module, scc_hir_cprog_t *cprog) {
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scc_hir_value_ref_t gv_ref = scc_vec_at(cprog->global_vals, i);
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scc_hir_value_t *galloc =
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scc_hir_module_get_value(&cprog->module, gv_ref);
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Assert(galloc->tag == SCC_HIR_VALUE_TAG_GLOBAL_ALLOC);
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Assert(galloc != nullptr &&
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galloc->tag == SCC_HIR_VALUE_TAG_GLOBAL_ALLOC);
|
||||
scc_hir_value_t *val = scc_hir_module_get_value(
|
||||
&cprog->module, galloc->data.global_alloc.value);
|
||||
scc_lir_symbol_id_t id = SCC_CFG_ID_nullptr;
|
||||
|
||||
int size = scc_hir_module_type_size(&cprog->module, val->type);
|
||||
Assert(size > 0);
|
||||
if (val == nullptr) {
|
||||
// TODO char == 8 bit
|
||||
id = scc_lir_module_add_data(module, galloc->name,
|
||||
SCC_CFG_SYMBOL_KIND_DATA, nullptr,
|
||||
size / 8, 0);
|
||||
} else {
|
||||
scc_hir_buffer_t *data = &val->data.const_array.fields;
|
||||
scc_lir_symbol_id_t id = scc_lir_module_add_data(
|
||||
Assert(scc_vec_size(*data) * 8 == size);
|
||||
// TODO char == 8 bit
|
||||
id = scc_lir_module_add_data(
|
||||
module, galloc->name, SCC_CFG_SYMBOL_KIND_DATA,
|
||||
scc_vec_unsafe_get_data(*data), scc_vec_size(*data), 0);
|
||||
scc_vec_unsafe_get_data(*data), size / 8, 0);
|
||||
}
|
||||
Assert(id != SCC_CFG_ID_nullptr);
|
||||
}
|
||||
|
||||
|
||||
@@ -50,6 +50,7 @@ typedef struct {
|
||||
|
||||
static inline scc_x86_operand_value_t scc_x86_op_preg(scc_x86_reg_t reg,
|
||||
u8 size_bits) {
|
||||
Assert(size_bits % 8 == 0);
|
||||
scc_x86_operand_value_t o = {
|
||||
.kind = SCC_X86_OPR_REG,
|
||||
.reg = reg,
|
||||
@@ -61,6 +62,7 @@ static inline scc_x86_reg_t scc_x86_op_vreg_reg(int vreg) {
|
||||
return (int)SCC_X86_REG_COUNT + vreg;
|
||||
}
|
||||
static inline scc_x86_operand_value_t scc_x86_op_vreg(int vreg, u8 size_bits) {
|
||||
Assert(size_bits % 8 == 0);
|
||||
scc_x86_operand_value_t o = {
|
||||
.kind = SCC_X86_OPR_REG,
|
||||
.reg = scc_x86_op_vreg_reg(vreg),
|
||||
@@ -77,6 +79,7 @@ static inline scc_x86_operand_value_t scc_x86_op_relbr(i32 rel) {
|
||||
return o;
|
||||
}
|
||||
static inline scc_x86_operand_value_t scc_x86_op_imm(i64 imm, u8 size_bits) {
|
||||
Assert(size_bits % 8 == 0);
|
||||
scc_x86_operand_value_t o = {
|
||||
.kind = SCC_X86_OPR_IMM,
|
||||
.simm0 = imm,
|
||||
@@ -86,6 +89,7 @@ static inline scc_x86_operand_value_t scc_x86_op_imm(i64 imm, u8 size_bits) {
|
||||
}
|
||||
static inline scc_x86_operand_value_t scc_x86_op_mem(scc_x86_mem_t mem,
|
||||
u8 size_bits) {
|
||||
Assert(size_bits % 8 == 0);
|
||||
scc_x86_operand_value_t o = {
|
||||
.kind = SCC_X86_OPR_MEM,
|
||||
.mem = mem,
|
||||
|
||||
@@ -244,7 +244,7 @@ sstream_drop:
|
||||
|
||||
scc_ast2ir_ctx_t ast2ir_ctx;
|
||||
scc_hir_cprog_t cprog;
|
||||
scc_hir_cprog_init(&cprog);
|
||||
scc_hir_cprog_init(&cprog, &SCC_TYPE_ABI_WIN_X64);
|
||||
scc_ast2ir_ctx_init(&ast2ir_ctx, &SCC_TYPE_ABI_WIN_X64, &ast_module,
|
||||
&cprog);
|
||||
scc_ast2ir_run(&ast2ir_ctx, translation_unit);
|
||||
|
||||
Reference in New Issue
Block a user