[deploy]修正了本地不能通过编译的bug，大幅修改了主函数，使之支持云平台测试参数

2025-07-16 11:18:43 +08:00
parent bd7f6ea6f6
commit 8c80b732f3
7 changed files with 176 additions and 500 deletions
--- a/src/sysyc.cpp
+++ b/src/sysyc.cpp
@@ -1,12 +1,16 @@
 #include <cstdlib>
 #include <fstream>
 #include <iostream>
-#include <unistd.h>
+#include <string>
+#include <unistd.h> // for getopt
+#include <stdexcept> // for std::stoi and exceptions
+
 using namespace std;
+
 #include "SysYLexer.h"
 #include "SysYParser.h"
 using namespace antlr4;
-// #include "Backend.h"
+
 #include "SysYIRGenerator.h"
 #include "SysYIRPrinter.h"
 #include "SysYIROptPre.h"
@@ -15,7 +19,7 @@ using namespace antlr4;
 #include "DeadCodeElimination.h"
 #include "Mem2Reg.h"
 #include "Reg2Mem.h"
-// #include "LLVMIRGenerator.h"
+
 using namespace sysy;

 int DEBUG = 0;
@@ -23,21 +27,27 @@ int DEEPDEBUG = 0;

 static string argStopAfter;
 static string argInputFile;
-static bool argFormat = false;
+static bool argFormat = false; // 目前未使用，但保留
+static string argOutputFilename;
+static int optLevel = 0; // 优化级别，默认为0 (不加-O参数时)

-void usage(int code = EXIT_FAILURE) {
+void usage(int code) {
  const char *msg = "Usage: sysyc [options] inputfile\n\n"
                    "Supported options:\n"
-                    "  -h \tprint help message and exit\n";
-  "  -f \tpretty-format the input file\n";
-  "  -s {ast,ir,asm,llvmir,asmd,ird}\tstop after generating AST/IR/Assembly\n";
+                    "  -h \tprint help message and exit\n"
+                    "  -f \tpretty-format the input file\n"
+                    "  -s {ast,ir,asm,llvmir,asmd,ird}\tstop after generating AST/IR/Assembly\n"
+                    "  -S \tcompile to assembly (.s file)\n"
+                    "  -o <file>\tplace the output into <file>\n"
+                    "  -O<level>\tenable optimization at <level> (e.g., -O0, -O1)\n";
  cerr << msg;
  exit(code);
 }

 void parseArgs(int argc, char **argv) {
-  const char *optstr = "hfs:";
+  const char *optstr = "hfs:So:O:"; 
  int opt = 0;
+
  while ((opt = getopt(argc, argv, optstr)) != -1) {
    switch (opt) {
    case 'h':
@@ -49,101 +59,179 @@ void parseArgs(int argc, char **argv) {
    case 's':
      argStopAfter = optarg;
      break;
+    case 'S':
+      argStopAfter = "asm";
+      break;
+    case 'o':
+      argOutputFilename = optarg;
+      break;
+    case 'O':
+      try {
+        optLevel = std::stoi(optarg);
+        if (optLevel < 0) {
+          cerr << "Error: Optimization level must be non-negative." << endl;
+          usage(EXIT_FAILURE);
+        }
+      } catch (const std::invalid_argument& ia) {
+        cerr << "Error: Invalid argument for -O: " << optarg << endl;
+        usage(EXIT_FAILURE);
+      } catch (const std::out_of_range& oor) {
+        cerr << "Error: Optimization level out of range: " << optarg << endl;
+        usage(EXIT_FAILURE);
+      }
+      break;
    default: /* '?' */
-      usage();
+      usage(EXIT_FAILURE);
    }
  }
-  if (optind >= argc)
-    usage();
+
+  if (optind >= argc) {
+    usage(EXIT_FAILURE);
+  }
  argInputFile = argv[optind];
 }

 int main(int argc, char **argv) {
  parseArgs(argc, argv);

-  // open the input file
+  // 1. 打开输入文件
  ifstream fin(argInputFile);
-  if (not fin) {
-    cerr << "Failed to open file " << argv[1];
+  if (not fin.is_open()) {
+    cerr << "Failed to open input file: " << argInputFile << endl;
    return EXIT_FAILURE;
  }

-  // parse sysy source to AST
+  // 2. 解析 SysY 源代码到 AST (前端)
  ANTLRInputStream input(fin);
  SysYLexer lexer(&input);
  CommonTokenStream tokens(&lexer);
  SysYParser parser(&tokens);
  auto moduleAST = parser.compUnit();
+
+  // 如果指定停止在 AST 阶段，则打印并退出
  if (argStopAfter == "ast") {
    cout << moduleAST->toStringTree(true) << '\n';
    return EXIT_SUCCESS;
  }

-
-  // visit AST to generate IR
+  // 3. 遍历 AST 生成 IR (中端开始)
  SysYIRGenerator generator;
  generator.visitCompUnit(moduleAST);
+  auto moduleIR = generator.get(); 
+  auto builder = generator.getBuilder(); // 获取 IRBuilder 实例
+
+  // 4. 执行 IR 优化 pass
+  // 无论最终输出是 IR 还是 ASM，只要不是停止在 AST 阶段，都会进入此优化流程。
+  // optLevel = 0 时，执行默认优化。
+  // optLevel >= 1 时，执行默认优化 + 额外的 -O1 优化。
+  cout << "Applying middle-end optimizations (level -O" << optLevel << ")...\n";
+
+  // 默认优化 pass (在所有优化级别都会执行)
+  SysYOptPre optPre(moduleIR, builder);
+  optPre.SysYOptimizateAfterIR(); 
+
+  ControlFlowAnalysis cfa(moduleIR);
+  cfa.init();
+  ActiveVarAnalysis ava;
+  ava.init(moduleIR);
+
+  if (DEBUG) {
+    cout << "=== After CFA & AVA (Default) ===\n";
+    SysYPrinter(moduleIR).printIR(); // 临时打印器用于调试
+  }
+
+  DeadCodeElimination dce(moduleIR, &cfa, &ava);
+  dce.runDCEPipeline();
+  if (DEBUG) {
+    cout << "=== After 1st DCE (Default) ===\n";
+    SysYPrinter(moduleIR).printIR();
+  }
+
+  Mem2Reg mem2reg(moduleIR, builder, &cfa, &ava);
+  mem2reg.mem2regPipeline();
+  if (DEBUG) {
+    cout << "=== After Mem2Reg (Default) ===\n";
+    SysYPrinter(moduleIR).printIR();
+  }
+
+  Reg2Mem reg2mem(moduleIR, builder);
+  reg2mem.DeletePhiInst();
+  if (DEBUG) {
+    cout << "=== After Reg2Mem (Default) ===\n";
+    SysYPrinter(moduleIR).printIR();
+  }
+
+  dce.runDCEPipeline(); // 第二次 DCE (默认)
+  if (DEBUG) {
+    cout << "=== After 2nd DCE (Default) ===\n";
+    SysYPrinter(moduleIR).printIR();
+  }
+
+  // 根据优化级别，执行额外的优化 pass
+  if (optLevel >= 1) { 
+    cout << "Applying additional -O" << optLevel << " optimizations...\n";
+    // 放置 -O1 及其以上级别要启用的额外优化 pass
+    // 例如：
+    // MyNewOptimizationPass newOpt(moduleIR, builder);
+    // newOpt.run();
+    
+    // 占位符注释，替换为你的具体优化 pass
+    // cout << "--- Additional Pass: MyCustomOpt1 ---" << endl;
+    // MyCustomOpt1 opt1_pass(moduleIR, builder);
+    // opt1_pass.run();
+
+    // cout << "--- Additional Pass: MyCustomOpt2 ---" << endl;
+    // MyCustomOpt2 opt2_pass(moduleIR, builder, &cfa); // 假设需要CFA
+    // opt2_pass.run();
+    // ... 更多 -O1 特有的优化
+  } else {
+    cout << "No additional middle-end optimizations applied for -O" << optLevel << ".\n";
+  }
+
+  // 5. 根据 argStopAfter 决定后续操作
+  // a) 如果指定停止在 IR 阶段，则打印最终 IR 并退出
  if (argStopAfter == "ir" || argStopAfter == "ird") {
+    // 设置 DEBUG 模式（如果指定了 'ird'）
    if (argStopAfter == "ird") {
-      DEBUG = 1;
-    }
-    auto moduleIR = generator.get(); 
-    SysYPrinter printer(moduleIR);
-    if (DEBUG) {
-      cout << "=== Original IR ===\n";
-      printer.printIR();
-    }
-    auto builder = generator.getBuilder();
-    SysYOptPre optPre(moduleIR, builder);
-    optPre.SysYOptimizateAfterIR();
-    ControlFlowAnalysis cfa(moduleIR);
-    cfa.init();
-    ActiveVarAnalysis ava;
-    ava.init(moduleIR);
-    if (DEBUG) {
-      cout << "=== After CFA & AVA ===\n";
-      printer.printIR();
-    }
-    DeadCodeElimination dce(moduleIR, &cfa, &ava);
-    dce.runDCEPipeline();
-    if (DEBUG) {
-      cout << "=== After 1st DCE ===\n";
-      printer.printIR();
-    }
-    Mem2Reg mem2reg(moduleIR, builder, &cfa, &ava);
-    mem2reg.mem2regPipeline();
-    if (DEBUG) {
-      cout << "=== After Mem2Reg ===\n";
-      printer.printIR();
-    }
-    Reg2Mem reg2mem(moduleIR, builder);
-    reg2mem.DeletePhiInst();
-    if (DEBUG) {
-      cout << "=== After Reg2Mem ===\n";
-      printer.printIR();
-    }
-    dce.runDCEPipeline();
-    if (DEBUG) {
-      cout << "=== After 2nd DCE ===\n";
-      printer.printIR();
+      DEBUG = 1; // 这里可能需要更精细地控制 DEBUG 的开启时机和范围
    }
+    // 打印最终 IR
    cout << "=== Final IR ===\n";
+    SysYPrinter printer(moduleIR); // 在这里创建打印器，因为可能之前调试时用过临时打印器
    printer.printIR();
    return EXIT_SUCCESS;
  }

-  // generate assembly
-  auto module = generator.get();
-  sysy::RISCv64CodeGen codegen(module);
+  // b) 如果未停止在 IR 阶段，则继续生成汇编 (后端)
+  sysy::RISCv64CodeGen codegen(moduleIR); // 传入优化后的 moduleIR
  string asmCode = codegen.code_gen();
+
+  // 如果指定停止在 ASM 阶段，则打印/保存汇编并退出
  if (argStopAfter == "asm" || argStopAfter == "asmd") {
+    // 设置 DEBUG 模式（如果指定了 'asmd'）
    if (argStopAfter == "asmd") {
      DEBUG = 1;
      DEEPDEBUG = 1;
    }
-    cout << asmCode << endl;
+
+    if (!argOutputFilename.empty()) {
+      ofstream fout(argOutputFilename);
+      if (not fout.is_open()) {
+        cerr << "Failed to open output file: " << argOutputFilename << endl;
+        return EXIT_FAILURE;
+      }
+      fout << asmCode << endl;
+      fout.close();
+    } else {
+      cout << asmCode << endl;
+    }
    return EXIT_SUCCESS;
  }

-  return EXIT_SUCCESS;
+  // 如果没有匹配到任何 -s 或 -S 选项，即意味着需要生成完整可执行文件（未来的功能）
+  // 目前，可以简单退出，或者打印一条提示
+  cout << "Compilation completed. No output specified (neither -s nor -S). Exiting.\n";
+  // return EXIT_SUCCESS; // 或者这里调用一个链接器生成可执行文件
+
+  return EXIT_SUCCESS; 
 }