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authorDimitry Andric <dim@FreeBSD.org>2019-12-20 19:53:05 +0000
committerDimitry Andric <dim@FreeBSD.org>2019-12-20 19:53:05 +0000
commit0b57cec536236d46e3dba9bd041533462f33dbb7 (patch)
tree56229dbdbbf76d18580f72f789003db17246c8d9 /contrib/llvm/lib/TableGen/Main.cpp
parent718ef55ec7785aae63f98f8ca05dc07ed399c16d (diff)
Notes
Diffstat (limited to 'contrib/llvm/lib/TableGen/Main.cpp')
-rw-r--r--contrib/llvm/lib/TableGen/Main.cpp142
1 files changed, 0 insertions, 142 deletions
diff --git a/contrib/llvm/lib/TableGen/Main.cpp b/contrib/llvm/lib/TableGen/Main.cpp
deleted file mode 100644
index b6ccc2a08593..000000000000
--- a/contrib/llvm/lib/TableGen/Main.cpp
+++ /dev/null
@@ -1,142 +0,0 @@
-//===- Main.cpp - Top-Level TableGen implementation -----------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// TableGen is a tool which can be used to build up a description of something,
-// then invoke one or more "tablegen backends" to emit information about the
-// description in some predefined format. In practice, this is used by the LLVM
-// code generators to automate generation of a code generator through a
-// high-level description of the target.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/TableGen/Main.h"
-#include "TGParser.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/ToolOutputFile.h"
-#include "llvm/TableGen/Error.h"
-#include "llvm/TableGen/Record.h"
-#include <algorithm>
-#include <cstdio>
-#include <system_error>
-using namespace llvm;
-
-static cl::opt<std::string>
-OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
- cl::init("-"));
-
-static cl::opt<std::string>
-DependFilename("d",
- cl::desc("Dependency filename"),
- cl::value_desc("filename"),
- cl::init(""));
-
-static cl::opt<std::string>
-InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
-
-static cl::list<std::string>
-IncludeDirs("I", cl::desc("Directory of include files"),
- cl::value_desc("directory"), cl::Prefix);
-
-static cl::list<std::string>
-MacroNames("D", cl::desc("Name of the macro to be defined"),
- cl::value_desc("macro name"), cl::Prefix);
-
-static cl::opt<bool>
-WriteIfChanged("write-if-changed", cl::desc("Only write output if it changed"));
-
-static int reportError(const char *ProgName, Twine Msg) {
- errs() << ProgName << ": " << Msg;
- errs().flush();
- return 1;
-}
-
-/// Create a dependency file for `-d` option.
-///
-/// This functionality is really only for the benefit of the build system.
-/// It is similar to GCC's `-M*` family of options.
-static int createDependencyFile(const TGParser &Parser, const char *argv0) {
- if (OutputFilename == "-")
- return reportError(argv0, "the option -d must be used together with -o\n");
-
- std::error_code EC;
- ToolOutputFile DepOut(DependFilename, EC, sys::fs::F_Text);
- if (EC)
- return reportError(argv0, "error opening " + DependFilename + ":" +
- EC.message() + "\n");
- DepOut.os() << OutputFilename << ":";
- for (const auto &Dep : Parser.getDependencies()) {
- DepOut.os() << ' ' << Dep.first;
- }
- DepOut.os() << "\n";
- DepOut.keep();
- return 0;
-}
-
-int llvm::TableGenMain(char *argv0, TableGenMainFn *MainFn) {
- RecordKeeper Records;
-
- // Parse the input file.
- ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
- MemoryBuffer::getFileOrSTDIN(InputFilename);
- if (std::error_code EC = FileOrErr.getError())
- return reportError(argv0, "Could not open input file '" + InputFilename +
- "': " + EC.message() + "\n");
-
- // Tell SrcMgr about this buffer, which is what TGParser will pick up.
- SrcMgr.AddNewSourceBuffer(std::move(*FileOrErr), SMLoc());
-
- // Record the location of the include directory so that the lexer can find
- // it later.
- SrcMgr.setIncludeDirs(IncludeDirs);
-
- TGParser Parser(SrcMgr, MacroNames, Records);
-
- if (Parser.ParseFile())
- return 1;
-
- // Write output to memory.
- std::string OutString;
- raw_string_ostream Out(OutString);
- if (MainFn(Out, Records))
- return 1;
-
- // Always write the depfile, even if the main output hasn't changed.
- // If it's missing, Ninja considers the output dirty. If this was below
- // the early exit below and someone deleted the .inc.d file but not the .inc
- // file, tablegen would never write the depfile.
- if (!DependFilename.empty()) {
- if (int Ret = createDependencyFile(Parser, argv0))
- return Ret;
- }
-
- if (WriteIfChanged) {
- // Only updates the real output file if there are any differences.
- // This prevents recompilation of all the files depending on it if there
- // aren't any.
- if (auto ExistingOrErr = MemoryBuffer::getFile(OutputFilename))
- if (std::move(ExistingOrErr.get())->getBuffer() == Out.str())
- return 0;
- }
-
- std::error_code EC;
- ToolOutputFile OutFile(OutputFilename, EC, sys::fs::F_Text);
- if (EC)
- return reportError(argv0, "error opening " + OutputFilename + ":" +
- EC.message() + "\n");
- OutFile.os() << Out.str();
-
- if (ErrorsPrinted > 0)
- return reportError(argv0, Twine(ErrorsPrinted) + " errors.\n");
-
- // Declare success.
- OutFile.keep();
- return 0;
-}