mirror of
https://github.com/c64scene-ar/llvm-6502.git
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f4ccd11075
This compiles with no changes to clang/lld/lldb with MSVC and includes overloads to various functions which are used by those projects and llvm which have OwningPtr's as parameters. This should allow out of tree projects some time to move. There are also no changes to libs/Target, which should help out of tree targets have time to move, if necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203083 91177308-0d34-0410-b5e6-96231b3b80d8
135 lines
4.1 KiB
C++
135 lines
4.1 KiB
C++
//===- llvm-link.cpp - Low-level LLVM linker ------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This utility may be invoked in the following manner:
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// llvm-link a.bc b.bc c.bc -o x.bc
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Linker/Linker.h"
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#include "llvm/Bitcode/ReaderWriter.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/Verifier.h"
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#include "llvm/IRReader/IRReader.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/PrettyStackTrace.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/SourceMgr.h"
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#include "llvm/Support/SystemUtils.h"
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#include "llvm/Support/ToolOutputFile.h"
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#include <memory>
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using namespace llvm;
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static cl::list<std::string>
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InputFilenames(cl::Positional, cl::OneOrMore,
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cl::desc("<input bitcode files>"));
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static cl::opt<std::string>
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OutputFilename("o", cl::desc("Override output filename"), cl::init("-"),
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cl::value_desc("filename"));
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static cl::opt<bool>
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Force("f", cl::desc("Enable binary output on terminals"));
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static cl::opt<bool>
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OutputAssembly("S",
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cl::desc("Write output as LLVM assembly"), cl::Hidden);
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static cl::opt<bool>
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Verbose("v", cl::desc("Print information about actions taken"));
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static cl::opt<bool>
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DumpAsm("d", cl::desc("Print assembly as linked"), cl::Hidden);
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static cl::opt<bool>
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SuppressWarnings("suppress-warnings", cl::desc("Suppress all linking warnings"),
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cl::init(false));
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// LoadFile - Read the specified bitcode file in and return it. This routine
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// searches the link path for the specified file to try to find it...
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//
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static inline Module *LoadFile(const char *argv0, const std::string &FN,
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LLVMContext& Context) {
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SMDiagnostic Err;
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if (Verbose) errs() << "Loading '" << FN << "'\n";
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Module* Result = 0;
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Result = ParseIRFile(FN, Err, Context);
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if (Result) return Result; // Load successful!
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Err.print(argv0, errs());
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return NULL;
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}
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int main(int argc, char **argv) {
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// Print a stack trace if we signal out.
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sys::PrintStackTraceOnErrorSignal();
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PrettyStackTraceProgram X(argc, argv);
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LLVMContext &Context = getGlobalContext();
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llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
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cl::ParseCommandLineOptions(argc, argv, "llvm linker\n");
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unsigned BaseArg = 0;
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std::string ErrorMessage;
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std::unique_ptr<Module> Composite(
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LoadFile(argv[0], InputFilenames[BaseArg], Context));
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if (Composite.get() == 0) {
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errs() << argv[0] << ": error loading file '"
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<< InputFilenames[BaseArg] << "'\n";
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return 1;
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}
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Linker L(Composite.get(), SuppressWarnings);
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for (unsigned i = BaseArg+1; i < InputFilenames.size(); ++i) {
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std::unique_ptr<Module> M(LoadFile(argv[0], InputFilenames[i], Context));
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if (M.get() == 0) {
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errs() << argv[0] << ": error loading file '" <<InputFilenames[i]<< "'\n";
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return 1;
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}
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if (Verbose) errs() << "Linking in '" << InputFilenames[i] << "'\n";
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if (L.linkInModule(M.get(), &ErrorMessage)) {
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errs() << argv[0] << ": link error in '" << InputFilenames[i]
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<< "': " << ErrorMessage << "\n";
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return 1;
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}
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}
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if (DumpAsm) errs() << "Here's the assembly:\n" << *Composite;
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std::string ErrorInfo;
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tool_output_file Out(OutputFilename.c_str(), ErrorInfo, sys::fs::F_None);
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if (!ErrorInfo.empty()) {
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errs() << ErrorInfo << '\n';
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return 1;
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}
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if (verifyModule(*Composite)) {
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errs() << argv[0] << ": linked module is broken!\n";
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return 1;
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}
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if (Verbose) errs() << "Writing bitcode...\n";
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if (OutputAssembly) {
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Out.os() << *Composite;
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} else if (Force || !CheckBitcodeOutputToConsole(Out.os(), true))
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WriteBitcodeToFile(Composite.get(), Out.os());
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// Declare success.
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Out.keep();
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return 0;
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}
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