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annotate dang/compiler.d @ 87:9a35a973175a new_gen

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Some improvements to the compiler program
author Anders Halager <halager@gmail.com>
date Sun, 04 May 2008 12:58:02 +0200
parents 381975d76baf
children eb5b2c719a39
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 module dang.compiler;
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2
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3 import tango.io.Stdout,
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4 tango.core.Signal,
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5 tango.time.StopWatch,
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6 tango.io.FilePath;
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7
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8 import lexer.Lexer,
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9 parser.Parser;
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10
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11 import misc.DataSource;
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12
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13 import ast.Decl;
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14
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15 import tools.AstPrinter,
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16 tools.DotPrinter;
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17
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18 import gen.CodeGen;
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19
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20 import sema.Visitor,
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21 sema.AstAction,
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22 sema.SymbolTableBuilder,
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23 sema.ImplicitCast,
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24 sema.Declarations;
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25
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26 import Opt = dang.OptParse;
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27
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28 void checkFiles(char[][] *files)
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29 {
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30 bool non_existant_files = false;
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31 bool duplicate_files = false;
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32
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33 char[][] validFiles;
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34
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35 foreach (file; *files)
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36 {
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37 scope path = new FilePath(file);
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38
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39 if (!path.exists)
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40 {
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41 Stderr.formatln("'{}' does not exist", file).newline;
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42 non_existant_files = true;
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43
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44 continue;
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45 }
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46
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47 bool fileInStack = false;
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48 foreach (vFile; validFiles)
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49 if (vFile == file)
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50 {
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51 fileInStack = true;
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52 duplicate_files = true;
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53 }
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54
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55 if (fileInStack)
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56 continue;
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57
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58 validFiles ~= file;
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59 }
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60
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61 *files = validFiles;
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62
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63 if (non_existant_files)
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64 throw new Exception("All files given must exist");
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65 if (duplicate_files)
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66 Stderr("warning: duplicate files ignored").newline;
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67 }
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68
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69 void main(char[][] args)
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70 {
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71 char[][] filesToHandle;
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72
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73 Signal!(char[][]*) preStart;
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74
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75 Signal!(char[]) preLex;
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76 Signal!(Lexer) postLex;
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77
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78 Signal!(Lexer) preParse;
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79 Signal!(Decl[], DataSource) postParse;
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80
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81 preStart.attach(&checkFiles);
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82
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83 auto argParse = new Opt.OptionParser(`Dang "D" compiler v0.0`);
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84
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85 bool optimize = false;
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86 bool inline = false;
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88 argParse.addOption(["-h", "--help"], Opt.Action.Help)
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89 .help("Show this help message");
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91 argParse.addOption(["--ast-dump-dot"],
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92 "what-to-do", Opt.Action.StoreConst, "dot")
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93 .help("Output the AST in the dot format");
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94 argParse.addOption(["--ast-dump-code"],
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95 "what-to-do", Opt.Action.StoreConst, "code")
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96 .help("Output the AST as code");
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97
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98 argParse.addOption(["--gen-llvm"],
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99 "what-to-do", Opt.Action.StoreConst, "gen-llvm")
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100 .help("Compile to LLVM code (default)");
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101
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102 argParse.addOption(
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103 ["-O","--optimize"], {
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104 optimize = true;
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105 }
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106 ).help("Tell LLVM to do its standard optimizations");
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107
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108 argParse.addOption(
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109 ["--inline"], {
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110 inline = true;
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111 }
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112 ).help("Tell LLVM that its allowed to inline functions");
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113
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114 argParse
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115 .addOption(["--time"], Opt.Action.SetTrue, "time")
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116 .help("Time the various operations performed.");
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117
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118 auto options = argParse.parse(args);
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119
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120 filesToHandle ~= options.args;
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121
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122 // Will throw exception if some files don't exist
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123 preStart(&filesToHandle);
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124
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125 struct Measurement { char[] label; double time; }
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126 Measurement[] timings;
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127
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128 auto what = options["what-to-do"];
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129 if (what == "" || what == "gen-llvm")
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130 postParse.attach(
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131 (Decl[] decls, DataSource src) {
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132 StopWatch w; w.start;
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133 auto llvmGen = new CodeGen();
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134 llvmGen.gen(decls, optimize, inline);
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135 timings ~= Measurement("Generating LLVM bytecode", w.stop);
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136 });
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137 else if (what == "dot")
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138 postParse.attach(
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139 (Decl[] decls, DataSource src) {
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140 StopWatch w; w.start;
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141 auto print = new DotPrinter();
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142 print.print(decls);
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143 timings ~= Measurement("Generating dot output", w.stop);
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144 });
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145 else if (what == "code")
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146 postParse.attach(
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147 (Decl[] decls, DataSource src) {
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148 StopWatch w; w.start;
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149 auto print = new AstPrinter(src);
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150 print.print(decls);
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151 timings ~= Measurement("Converting AST to text", w.stop);
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152 });
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153
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154 StopWatch total;
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155 total.start;
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156 foreach(file ; filesToHandle)
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157 {
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158 preLex(file);
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159
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160 auto src = DataSource(file);
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161 auto lexer = new Lexer(src);
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162 postLex(lexer);
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163
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164 preParse(lexer);
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165
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166 StopWatch watch;
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167 watch.start;
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168 auto parser = new Parser;
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169 auto decls = cast(Decl[])parser.parse(lexer, new AstAction);
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170 timings ~= Measurement("Lex + Parse", watch.stop);
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171
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172 StopWatch watch2;
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173 watch.start;
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174 watch2.start;
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175 (new SymbolTableBuilder).visit(decls);
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176 auto symbol_table = watch2.stop;
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177 watch2.start;
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178 (new Declarations).visit(decls);
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179 auto declarations = watch2.stop;
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180 watch2.start;
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181 (new ImplicitCast).visit(decls);
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182 auto implicit_casts = watch2.stop;
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183 watch2.start;
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184
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185 foreach (decl; decls)
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186 decl.simplify();
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187 auto simplify = watch2.stop;
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188 auto extra_stuff = watch.stop;
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189 timings ~= Measurement("Extra stuff", watch.stop);
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190 timings ~= Measurement(" - Building scopes", symbol_table);
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191 timings ~= Measurement(" - Extracting declarations", declarations);
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192 timings ~= Measurement(" - Making casts explicit", implicit_casts);
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193
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194 postParse(decls, src);
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195 }
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196 timings ~= Measurement("Total", total.stop);
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197
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198 if (options.flag("time"))
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199 foreach (m; timings)
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200 Stderr.formatln("{,-45} {}ms", m.label, m.time*1e3);
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201 }
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202