Merge branch 'backend' into SCCP
This commit is contained in:
59
src/include/AddressCalculationExpansion.h
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59
src/include/AddressCalculationExpansion.h
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@@ -0,0 +1,59 @@
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#pragma once
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#include "IR.h" // 假设IR.h包含了Module, Function, BasicBlock, Instruction, Value, IRBuilder, Type等定义
|
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#include "IRBuilder.h" // 需要IRBuilder来创建新指令
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#include "SysYIRPrinter.h" // 新增: 用于调试输出
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#include <memory>
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#include <string>
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#include <unordered_map>
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#include <vector>
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#include <list> // 用于迭代和修改指令列表
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#include <algorithm> // for std::reverse (if needed, although not used in final version)
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#include <iostream> // MODIFICATION: 用于警告输出
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namespace sysy {
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/**
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* @brief AddressCalculationExpansion Pass
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*
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* 这是一个IR优化Pass,用于将LoadInst和StoreInst中包含的多维数组索引
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* 显式地转换为IR中的BinaryInst(乘法和加法)序列,并生成带有线性偏移量的
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* LoadInst/StoreInst。
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*
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* 目的:确保在寄存器分配之前,所有中间地址计算的结果都有明确的IR指令和对应的虚拟寄存器,
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* 从而避免在后端DAG构建时临时创建值而导致寄存器分配缺失的问题。
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*
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* SysY语言特性:
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* - 无指针类型(所有数组访问的基地址是alloca或global的AllocaType/ArrayType)
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* - 数据类型只有int和float,且都占用4字节。
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* - LoadInst和StoreInst直接接受多个索引作为额外操作数。
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*/
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class AddressCalculationExpansion {
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private:
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Module* pModule;
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IRBuilder* pBuilder; // 用于在IR中插入新指令
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// 数组元素的固定大小,根据SysY特性,int和float都是4字节
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static const int ELEMENT_SIZE = 4;
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// 辅助函数:根据数组的维度信息和当前索引的维度,计算该索引的步长(字节数)
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// dims: 包含所有维度大小的vector,例如 {2, 3, 4}
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// currentDimIndex: 当前正在处理的索引在 dims 中的位置 (0, 1, 2...)
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int calculateStride(const std::vector<int>& dims, size_t currentDimIndex) {
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int stride = ELEMENT_SIZE; // 最内层元素大小 (4字节)
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// 乘以当前维度之后的所有维度的大小
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for (size_t i = currentDimIndex + 1; i < dims.size(); ++i) {
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stride *= dims[i];
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}
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return stride;
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}
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public:
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AddressCalculationExpansion(Module* module, IRBuilder* builder)
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: pModule(module), pBuilder(builder) {}
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// 运行此Pass
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bool run();
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};
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} // namespace sysy
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32
src/include/RISCv64AsmPrinter.h
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32
src/include/RISCv64AsmPrinter.h
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@@ -0,0 +1,32 @@
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#ifndef RISCV64_ASMPRINTER_H
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#define RISCV64_ASMPRINTER_H
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#include "RISCv64LLIR.h"
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#include <iostream>
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namespace sysy {
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class RISCv64AsmPrinter {
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public:
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RISCv64AsmPrinter(MachineFunction* mfunc);
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// 主入口
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void run(std::ostream& os);
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private:
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// 打印各个部分
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void printPrologue();
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void printEpilogue();
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void printBasicBlock(MachineBasicBlock* mbb);
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void printInstruction(MachineInstr* instr);
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// 辅助函数
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std::string regToString(PhysicalReg reg);
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void printOperand(MachineOperand* op);
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MachineFunction* MFunc;
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std::ostream* OS;
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};
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} // namespace sysy
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#endif // RISCV64_ASMPRINTER_H
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@@ -3,118 +3,23 @@
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#include "IR.h"
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#include <string>
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#include <vector>
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#include <map>
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#include <set>
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#include <memory>
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#include <iostream>
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#include <functional> // For std::function
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extern int DEBUG;
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extern int DEEPDEBUG;
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namespace sysy {
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// RISCv64CodeGen 现在是一个高层驱动器
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class RISCv64CodeGen {
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public:
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enum class PhysicalReg {
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ZERO, RA, SP, GP, TP, T0, T1, T2, S0, S1, A0, A1, A2, A3, A4, A5, A6, A7, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, T3, T4, T5, T6,
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F0, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, F13, F14, F15,F16, F17, F18, F19, F20, F21, F22, F23, F24, F25, F26, F27, F28, F29, F30, F31
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};
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// Move DAGNode and RegAllocResult to public section
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struct DAGNode {
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enum NodeKind { CONSTANT, LOAD, STORE, BINARY, CALL, RETURN, BRANCH, ALLOCA_ADDR, UNARY };
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NodeKind kind;
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Value* value = nullptr; // For IR Value
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std::string inst; // Generated RISC-V instruction(s) for this node
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std::string result_vreg; // Virtual register assigned to this node's result
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std::vector<DAGNode*> operands;
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std::vector<DAGNode*> users; // For debugging and potentially optimizations
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DAGNode(NodeKind k) : kind(k) {}
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// Debugging / helper
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std::string getNodeKindString() const {
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switch (kind) {
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case CONSTANT: return "CONSTANT";
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case LOAD: return "LOAD";
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case STORE: return "STORE";
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case BINARY: return "BINARY";
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case CALL: return "CALL";
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case RETURN: return "RETURN";
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case BRANCH: return "BRANCH";
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case ALLOCA_ADDR: return "ALLOCA_ADDR";
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case UNARY: return "UNARY";
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default: return "UNKNOWN";
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}
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}
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};
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|
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struct RegAllocResult {
|
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std::map<std::string, PhysicalReg> vreg_to_preg; // Virtual register to Physical Register mapping
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std::map<Value*, int> stack_map; // Value (AllocaInst) to stack offset
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int stack_size = 0; // Total stack frame size for locals and spills
|
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};
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||||
|
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RISCv64CodeGen(Module* mod) : module(mod) {}
|
||||
|
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// 唯一的公共入口点
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std::string code_gen();
|
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std::string module_gen();
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std::string function_gen(Function* func);
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// 修改 basicBlock_gen 的声明,添加 int block_idx 参数
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std::string basicBlock_gen(BasicBlock* bb, const RegAllocResult& alloc, int block_idx);
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// DAG related
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std::vector<std::unique_ptr<DAGNode>> build_dag(BasicBlock* bb);
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void select_instructions(DAGNode* node, const RegAllocResult& alloc);
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// 改变 emit_instructions 的参数,使其可以直接添加汇编指令到 main ss
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void emit_instructions(DAGNode* node, std::stringstream& ss, const RegAllocResult& alloc, std::set<DAGNode*>& emitted_nodes);
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// Register Allocation related
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||||
std::map<Instruction*, std::set<std::string>> liveness_analysis(Function* func);
|
||||
std::map<std::string, std::set<std::string>> build_interference_graph(
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const std::map<Instruction*, std::set<std::string>>& live_sets);
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void color_graph(std::map<std::string, PhysicalReg>& vreg_to_preg,
|
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const std::map<std::string, std::set<std::string>>& interference_graph);
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||||
RegAllocResult register_allocation(Function* func);
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void eliminate_phi(Function* func); // Phi elimination is typically done before DAG building
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|
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// Utility
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std::string reg_to_string(PhysicalReg reg);
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void print_dag(const std::vector<std::unique_ptr<DAGNode>>& dag, const std::string& bb_name);
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private:
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static const std::vector<PhysicalReg> allocable_regs;
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std::map<Value*, std::string> value_vreg_map; // Maps IR Value* to its virtual register name
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// 模块级代码生成
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std::string module_gen();
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// 函数级代码生成 (实现新的流水线)
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std::string function_gen(Function* func);
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Module* module;
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int vreg_counter = 0; // Counter for unique virtual register names
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int alloca_offset_counter = 0; // Counter for alloca offsets
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// 新增一个成员变量来存储当前函数的所有 DAGNode,以确保其生命周期贯穿整个函数代码生成
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// 这样可以在多个 BasicBlock_gen 调用中访问到完整的 DAG 节点
|
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std::vector<std::unique_ptr<DAGNode>> current_function_dag_nodes;
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||||
|
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// 为空标签定义一个伪名称前缀,加上块索引以确保唯一性
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const std::string ENTRY_BLOCK_PSEUDO_NAME = "entry_block_";
|
||||
|
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// !!! 修改:get_operand_node 辅助函数现在需要传入 value_to_node 和 nodes_storage 的引用
|
||||
// 因为它们是 build_dag 局部管理的
|
||||
DAGNode* get_operand_node(
|
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Value* val_ir,
|
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std::map<Value*, DAGNode*>& value_to_node,
|
||||
std::vector<std::unique_ptr<DAGNode>>& nodes_storage
|
||||
);
|
||||
|
||||
// !!! 新增:create_node 辅助函数也需要传入 value_to_node 和 nodes_storage 的引用
|
||||
// 并且它应该不再是 lambda,而是一个真正的成员函数
|
||||
DAGNode* create_node(
|
||||
DAGNode::NodeKind kind,
|
||||
Value* val,
|
||||
std::map<Value*, DAGNode*>& value_to_node,
|
||||
std::vector<std::unique_ptr<DAGNode>>& nodes_storage
|
||||
);
|
||||
|
||||
std::vector<std::unique_ptr<Instruction>> temp_instructions_storage; // 用于存储 build_dag 中创建的临时 BinaryInst
|
||||
};
|
||||
|
||||
} // namespace sysy
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49
src/include/RISCv64ISel.h
Normal file
49
src/include/RISCv64ISel.h
Normal file
@@ -0,0 +1,49 @@
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#ifndef RISCV64_ISEL_H
|
||||
#define RISCV64_ISEL_H
|
||||
|
||||
#include "RISCv64LLIR.h"
|
||||
|
||||
namespace sysy {
|
||||
|
||||
class RISCv64ISel {
|
||||
public:
|
||||
RISCv64ISel();
|
||||
// 模块主入口:将一个高层IR函数转换为底层LLIR函数
|
||||
std::unique_ptr<MachineFunction> runOnFunction(Function* func);
|
||||
|
||||
// 公开接口,以便后续模块(如RegAlloc)可以查询或创建vreg
|
||||
unsigned getVReg(Value* val);
|
||||
unsigned getNewVReg() { return vreg_counter++; }
|
||||
|
||||
private:
|
||||
// DAG节点定义,作为ISel的内部实现细节
|
||||
struct DAGNode;
|
||||
|
||||
// 指令选择主流程
|
||||
void select();
|
||||
// 为单个基本块生成指令
|
||||
void selectBasicBlock(BasicBlock* bb);
|
||||
// 核心函数:为DAG节点选择并生成MachineInstr
|
||||
void selectNode(DAGNode* node);
|
||||
|
||||
// DAG 构建相关函数 (从原RISCv64Backend迁移)
|
||||
std::vector<std::unique_ptr<DAGNode>> build_dag(BasicBlock* bb);
|
||||
DAGNode* get_operand_node(Value* val_ir, std::map<Value*, DAGNode*>&, std::vector<std::unique_ptr<DAGNode>>&);
|
||||
DAGNode* create_node(int kind, Value* val, std::map<Value*, DAGNode*>&, std::vector<std::unique_ptr<DAGNode>>&);
|
||||
|
||||
// 状态
|
||||
Function* F; // 当前处理的高层IR函数
|
||||
std::unique_ptr<MachineFunction> MFunc; // 正在构建的底层LLIR函数
|
||||
MachineBasicBlock* CurMBB; // 当前正在处理的机器基本块
|
||||
|
||||
// 映射关系
|
||||
std::map<Value*, unsigned> vreg_map;
|
||||
std::map<const BasicBlock*, MachineBasicBlock*> bb_map;
|
||||
|
||||
unsigned vreg_counter;
|
||||
int local_label_counter;
|
||||
};
|
||||
|
||||
} // namespace sysy
|
||||
|
||||
#endif // RISCV64_ISEL_H
|
||||
200
src/include/RISCv64LLIR.h
Normal file
200
src/include/RISCv64LLIR.h
Normal file
@@ -0,0 +1,200 @@
|
||||
#ifndef RISCV64_LLIR_H
|
||||
#define RISCV64_LLIR_H
|
||||
|
||||
#include "IR.h" // 确保包含了您自己的IR头文件
|
||||
#include <string>
|
||||
#include <vector>
|
||||
#include <memory>
|
||||
#include <cstdint>
|
||||
#include <map>
|
||||
|
||||
// 前向声明,避免循环引用
|
||||
namespace sysy {
|
||||
class Function;
|
||||
class RISCv64ISel;
|
||||
}
|
||||
|
||||
namespace sysy {
|
||||
|
||||
// 物理寄存器定义
|
||||
enum class PhysicalReg {
|
||||
ZERO, RA, SP, GP, TP, T0, T1, T2, S0, S1, A0, A1, A2, A3, A4, A5, A6, A7, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, T3, T4, T5, T6,
|
||||
F0, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, F13, F14, F15,F16, F17, F18, F19, F20, F21, F22, F23, F24, F25, F26, F27, F28, F29, F30, F31
|
||||
};
|
||||
|
||||
// RISC-V 指令操作码枚举
|
||||
enum class RVOpcodes {
|
||||
// 算术指令
|
||||
ADD, ADDI, ADDW, ADDIW, SUB, SUBW, MUL, MULW, DIV, DIVW, REM, REMW,
|
||||
// 逻辑指令
|
||||
XOR, XORI, OR, ORI, AND, ANDI,
|
||||
// 移位指令
|
||||
SLL, SLLI, SLLW, SLLIW, SRL, SRLI, SRLW, SRLIW, SRA, SRAI, SRAW, SRAIW,
|
||||
// 比较指令
|
||||
SLT, SLTI, SLTU, SLTIU,
|
||||
// 内存访问指令
|
||||
LW, LH, LB, LWU, LHU, LBU, SW, SH, SB, LD, SD,
|
||||
// 控制流指令
|
||||
J, JAL, JALR, RET,
|
||||
BEQ, BNE, BLT, BGE, BLTU, BGEU,
|
||||
// 伪指令
|
||||
LI, LA, MV, NEG, NEGW, SEQZ, SNEZ,
|
||||
// 函数调用
|
||||
CALL,
|
||||
// 特殊标记,非指令
|
||||
LABEL,
|
||||
// 新增伪指令,用于解耦栈帧处理
|
||||
FRAME_LOAD, // 从栈帧加载 (AllocaInst)
|
||||
FRAME_STORE, // 保存到栈帧 (AllocaInst)
|
||||
};
|
||||
|
||||
class MachineOperand;
|
||||
class RegOperand;
|
||||
class ImmOperand;
|
||||
class LabelOperand;
|
||||
class MemOperand;
|
||||
class MachineInstr;
|
||||
class MachineBasicBlock;
|
||||
class MachineFunction;
|
||||
|
||||
// 操作数基类
|
||||
class MachineOperand {
|
||||
public:
|
||||
enum OperandKind { KIND_REG, KIND_IMM, KIND_LABEL, KIND_MEM };
|
||||
MachineOperand(OperandKind kind) : kind(kind) {}
|
||||
virtual ~MachineOperand() = default;
|
||||
OperandKind getKind() const { return kind; }
|
||||
private:
|
||||
OperandKind kind;
|
||||
};
|
||||
|
||||
// 寄存器操作数
|
||||
class RegOperand : public MachineOperand {
|
||||
public:
|
||||
// 构造虚拟寄存器
|
||||
RegOperand(unsigned vreg_num)
|
||||
: MachineOperand(KIND_REG), vreg_num(vreg_num), is_virtual(true) {}
|
||||
|
||||
// 构造物理寄存器
|
||||
RegOperand(PhysicalReg preg)
|
||||
: MachineOperand(KIND_REG), preg(preg), is_virtual(false) {}
|
||||
|
||||
bool isVirtual() const { return is_virtual; }
|
||||
unsigned getVRegNum() const { return vreg_num; }
|
||||
PhysicalReg getPReg() const { return preg; }
|
||||
|
||||
void setPReg(PhysicalReg new_preg) {
|
||||
preg = new_preg;
|
||||
is_virtual = false;
|
||||
}
|
||||
private:
|
||||
unsigned vreg_num = 0;
|
||||
PhysicalReg preg = PhysicalReg::ZERO;
|
||||
bool is_virtual;
|
||||
};
|
||||
|
||||
// 立即数操作数
|
||||
class ImmOperand : public MachineOperand {
|
||||
public:
|
||||
ImmOperand(int64_t value) : MachineOperand(KIND_IMM), value(value) {}
|
||||
int64_t getValue() const { return value; }
|
||||
private:
|
||||
int64_t value;
|
||||
};
|
||||
|
||||
// 标签操作数
|
||||
class LabelOperand : public MachineOperand {
|
||||
public:
|
||||
LabelOperand(const std::string& name) : MachineOperand(KIND_LABEL), name(name) {}
|
||||
const std::string& getName() const { return name; }
|
||||
private:
|
||||
std::string name;
|
||||
};
|
||||
|
||||
// 内存操作数, 表示 offset(base_reg)
|
||||
class MemOperand : public MachineOperand {
|
||||
public:
|
||||
MemOperand(std::unique_ptr<RegOperand> base, std::unique_ptr<ImmOperand> offset)
|
||||
: MachineOperand(KIND_MEM), base(std::move(base)), offset(std::move(offset)) {}
|
||||
RegOperand* getBase() const { return base.get(); }
|
||||
ImmOperand* getOffset() const { return offset.get(); }
|
||||
private:
|
||||
std::unique_ptr<RegOperand> base;
|
||||
std::unique_ptr<ImmOperand> offset;
|
||||
};
|
||||
|
||||
// 机器指令
|
||||
class MachineInstr {
|
||||
public:
|
||||
MachineInstr(RVOpcodes opcode) : opcode(opcode) {}
|
||||
|
||||
RVOpcodes getOpcode() const { return opcode; }
|
||||
const std::vector<std::unique_ptr<MachineOperand>>& getOperands() const { return operands; }
|
||||
std::vector<std::unique_ptr<MachineOperand>>& getOperands() { return operands; }
|
||||
|
||||
void addOperand(std::unique_ptr<MachineOperand> operand) {
|
||||
operands.push_back(std::move(operand));
|
||||
}
|
||||
private:
|
||||
RVOpcodes opcode;
|
||||
std::vector<std::unique_ptr<MachineOperand>> operands;
|
||||
};
|
||||
|
||||
// 机器基本块
|
||||
class MachineBasicBlock {
|
||||
public:
|
||||
MachineBasicBlock(const std::string& name, MachineFunction* parent)
|
||||
: name(name), parent(parent) {}
|
||||
|
||||
const std::string& getName() const { return name; }
|
||||
MachineFunction* getParent() const { return parent; }
|
||||
const std::vector<std::unique_ptr<MachineInstr>>& getInstructions() const { return instructions; }
|
||||
std::vector<std::unique_ptr<MachineInstr>>& getInstructions() { return instructions; }
|
||||
|
||||
void addInstruction(std::unique_ptr<MachineInstr> instr) {
|
||||
instructions.push_back(std::move(instr));
|
||||
}
|
||||
|
||||
std::vector<MachineBasicBlock*> successors;
|
||||
std::vector<MachineBasicBlock*> predecessors;
|
||||
private:
|
||||
std::string name;
|
||||
std::vector<std::unique_ptr<MachineInstr>> instructions;
|
||||
MachineFunction* parent;
|
||||
};
|
||||
|
||||
// 栈帧信息
|
||||
struct StackFrameInfo {
|
||||
int locals_size = 0; // 仅为AllocaInst分配的大小
|
||||
int spill_size = 0; // 仅为溢出分配的大小
|
||||
int total_size = 0; // 总大小
|
||||
std::map<unsigned, int> alloca_offsets; // <AllocaInst的vreg, 栈偏移>
|
||||
std::map<unsigned, int> spill_offsets; // <溢出vreg, 栈偏移>
|
||||
};
|
||||
|
||||
// 机器函数
|
||||
class MachineFunction {
|
||||
public:
|
||||
MachineFunction(Function* func, RISCv64ISel* isel) : F(func), name(func->getName()), isel(isel) {}
|
||||
|
||||
Function* getFunc() const { return F; }
|
||||
RISCv64ISel* getISel() const { return isel; }
|
||||
const std::string& getName() const { return name; }
|
||||
StackFrameInfo& getFrameInfo() { return frame_info; }
|
||||
const std::vector<std::unique_ptr<MachineBasicBlock>>& getBlocks() const { return blocks; }
|
||||
std::vector<std::unique_ptr<MachineBasicBlock>>& getBlocks() { return blocks; }
|
||||
|
||||
void addBlock(std::unique_ptr<MachineBasicBlock> block) {
|
||||
blocks.push_back(std::move(block));
|
||||
}
|
||||
private:
|
||||
Function* F;
|
||||
RISCv64ISel* isel; // 指向创建它的ISel,用于获取vreg映射等信息
|
||||
std::string name;
|
||||
std::vector<std::unique_ptr<MachineBasicBlock>> blocks;
|
||||
StackFrameInfo frame_info;
|
||||
};
|
||||
|
||||
} // namespace sysy
|
||||
|
||||
#endif // RISCV64_LLIR_H
|
||||
61
src/include/RISCv64Passes.h
Normal file
61
src/include/RISCv64Passes.h
Normal file
@@ -0,0 +1,61 @@
|
||||
#ifndef RISCV64_PASSES_H
|
||||
#define RISCV64_PASSES_H
|
||||
|
||||
#include "RISCv64LLIR.h"
|
||||
|
||||
namespace sysy {
|
||||
|
||||
/**
|
||||
* @class Pass
|
||||
* @brief 所有优化Pass的抽象基类 (可选,但推荐)
|
||||
* * 定义一个通用的接口,所有优化都应该实现它。
|
||||
*/
|
||||
class Pass {
|
||||
public:
|
||||
virtual ~Pass() = default;
|
||||
virtual void runOnMachineFunction(MachineFunction* mfunc) = 0;
|
||||
};
|
||||
|
||||
|
||||
// --- 寄存器分配前优化 ---
|
||||
|
||||
/**
|
||||
* @class PreRA_Scheduler
|
||||
* @brief 寄存器分配前的指令调度器
|
||||
* * 在虚拟寄存器上进行操作,此时调度自由度最大,
|
||||
* 主要目标是隐藏指令延迟,提高流水线效率。
|
||||
*/
|
||||
class PreRA_Scheduler : public Pass {
|
||||
public:
|
||||
void runOnMachineFunction(MachineFunction* mfunc) override;
|
||||
};
|
||||
|
||||
|
||||
// --- 寄存器分配后优化 ---
|
||||
|
||||
/**
|
||||
* @class PeepholeOptimizer
|
||||
* @brief 窥孔优化器
|
||||
* * 在已分配物理寄存器的指令流上,通过一个小的滑动窗口来查找
|
||||
* 并替换掉一些冗余或低效的指令模式。
|
||||
*/
|
||||
class PeepholeOptimizer : public Pass {
|
||||
public:
|
||||
void runOnMachineFunction(MachineFunction* mfunc) override;
|
||||
};
|
||||
|
||||
/**
|
||||
* @class PostRA_Scheduler
|
||||
* @brief 寄存器分配后的局部指令调度器
|
||||
* * 主要目标是优化寄存器分配器插入的spill/fill代码(lw/sw),
|
||||
* 尝试将加载指令提前,以隐藏其访存延迟。
|
||||
*/
|
||||
class PostRA_Scheduler : public Pass {
|
||||
public:
|
||||
void runOnMachineFunction(MachineFunction* mfunc) override;
|
||||
};
|
||||
|
||||
|
||||
} // namespace sysy
|
||||
|
||||
#endif // RISCV64_PASSES_H
|
||||
56
src/include/RISCv64RegAlloc.h
Normal file
56
src/include/RISCv64RegAlloc.h
Normal file
@@ -0,0 +1,56 @@
|
||||
#ifndef RISCV64_REGALLOC_H
|
||||
#define RISCV64_REGALLOC_H
|
||||
|
||||
#include "RISCv64LLIR.h"
|
||||
|
||||
namespace sysy {
|
||||
|
||||
class RISCv64RegAlloc {
|
||||
public:
|
||||
RISCv64RegAlloc(MachineFunction* mfunc);
|
||||
|
||||
// 模块主入口
|
||||
void run();
|
||||
|
||||
private:
|
||||
using LiveSet = std::set<unsigned>; // 活跃虚拟寄存器集合
|
||||
using InterferenceGraph = std::map<unsigned, std::set<unsigned>>;
|
||||
|
||||
// 栈帧管理
|
||||
void eliminateFrameIndices();
|
||||
|
||||
// 活跃性分析
|
||||
void analyzeLiveness();
|
||||
|
||||
// 构建干扰图
|
||||
void buildInterferenceGraph();
|
||||
|
||||
// 图着色分配寄存器
|
||||
void colorGraph();
|
||||
|
||||
// 重写函数,替换vreg并插入溢出代码
|
||||
void rewriteFunction();
|
||||
|
||||
// 辅助函数,获取指令的Use/Def集合
|
||||
void getInstrUseDef(MachineInstr* instr, LiveSet& use, LiveSet& def);
|
||||
|
||||
MachineFunction* MFunc;
|
||||
|
||||
// 活跃性分析结果
|
||||
std::map<const MachineInstr*, LiveSet> live_in_map;
|
||||
std::map<const MachineInstr*, LiveSet> live_out_map;
|
||||
|
||||
// 干扰图
|
||||
InterferenceGraph interference_graph;
|
||||
|
||||
// 图着色结果
|
||||
std::map<unsigned, PhysicalReg> color_map; // vreg -> preg
|
||||
std::set<unsigned> spilled_vregs; // 被溢出的vreg集合
|
||||
|
||||
// 可用的物理寄存器池
|
||||
std::vector<PhysicalReg> allocable_int_regs;
|
||||
};
|
||||
|
||||
} // namespace sysy
|
||||
|
||||
#endif // RISCV64_REGALLOC_H
|
||||
Reference in New Issue
Block a user