llvm/utils/TableGen/TableGen.cpp

   1 //===- TableGen.cpp - Top-Level TableGen implementation for LLVM ----------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file contains the main function for LLVM's TableGen.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "llvm/ADT/StringRef.h"
  14 #include "llvm/Support/CommandLine.h"
  15 #include "llvm/Support/InitLLVM.h"
  16 #include "llvm/Support/raw_ostream.h"
  17 #include "llvm/TableGen/Main.h"
  18 #include "llvm/TableGen/Record.h"
  19 #include "llvm/TableGen/SetTheory.h"
  20 #include "llvm/TableGen/TableGenBackend.h"
  21 #include <cassert>
  22 #include <string>
  23 #include <vector>
  24
  25 using namespace llvm;
  26
  27 namespace llvm {
  28 cl::opt<bool> EmitLongStrLiterals(
  29     "long-string-literals",
  30     cl::desc("when emitting large string tables, prefer string literals over "
  31              "comma-separated char literals. This can be a readability and "
  32              "compile-time performance win, but upsets some compilers"),
  33     cl::Hidden, cl::init(true));
  34 } // end namespace llvm
  35
  36 static cl::OptionCategory PrintEnumsCat("Options for -print-enums");
  37 static cl::opt<std::string> Class("class",
  38                                   cl::desc("Print Enum list for this class"),
  39                                   cl::value_desc("class name"),
  40                                   cl::cat(PrintEnumsCat));
  41
  42 static void printRecords(const RecordKeeper &Records, raw_ostream &OS) {
  43   OS << Records; // No argument, dump all contents
  44 }
  45
  46 static void printEnums(const RecordKeeper &Records, raw_ostream &OS) {
  47   for (const Record *Rec : Records.getAllDerivedDefinitions(Class))
  48     OS << Rec->getName() << ", ";
  49   OS << "\n";
  50 }
  51
  52 static void printSets(const RecordKeeper &Records, raw_ostream &OS) {
  53   SetTheory Sets;
  54   Sets.addFieldExpander("Set", "Elements");
  55   for (const Record *Rec : Records.getAllDerivedDefinitions("Set")) {
  56     OS << Rec->getName() << " = [";
  57     const std::vector<const Record *> *Elts = Sets.expand(Rec);
  58     assert(Elts && "Couldn't expand Set instance");
  59     for (const Record *Elt : *Elts)
  60       OS << ' ' << Elt->getName();
  61     OS << " ]\n";
  62   }
  63 }
  64
  65 static TableGen::Emitter::Opt X[] = {
  66     {"print-records", printRecords, "Print all records to stdout (default)",
  67      true},
  68     {"print-detailed-records", EmitDetailedRecords,
  69      "Print full details of all records to stdout"},
  70     {"null-backend", [](const RecordKeeper &Records, raw_ostream &OS) {},
  71      "Do nothing after parsing (useful for timing)"},
  72     {"dump-json", EmitJSON, "Dump all records as machine-readable JSON"},
  73     {"print-enums", printEnums, "Print enum values for a class"},
  74     {"print-sets", printSets, "Print expanded sets for testing DAG exprs"},
  75 };
  76
  77 int main(int argc, char **argv) {
  78   InitLLVM X(argc, argv);
  79   cl::ParseCommandLineOptions(argc, argv);
  80
  81   return TableGenMain(argv[0]);
  82 }
  83
  84 #ifndef __has_feature
  85 #define __has_feature(x) 0
  86 #endif
  87
  88 #if __has_feature(address_sanitizer) ||                                        \
  89     (defined(__SANITIZE_ADDRESS__) && defined(__GNUC__)) ||                    \
  90     __has_feature(leak_sanitizer)
  91
  92 #include <sanitizer/lsan_interface.h>
  93 // Disable LeakSanitizer for this binary as it has too many leaks that are not
  94 // very interesting to fix. See compiler-rt/include/sanitizer/lsan_interface.h .
  95 LLVM_ATTRIBUTE_USED int __lsan_is_turned_off() { return 1; }
  96
  97 #endif