X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=tools%2Fllvm-link%2Fllvm-link.cpp;h=d8d7534e5c73c98d11f2c49fb775ff29898ed691;hb=566fb9fe3ed767be7218fb1608ec6a284067d3b0;hp=6dc04e6722871f171bd046b97f3e5ff1055631f2;hpb=74382b7c699120fbec5cb5603c9cf4212eb37f06;p=oota-llvm.git

diff --git a/tools/llvm-link/llvm-link.cpp b/tools/llvm-link/llvm-link.cpp
index 6dc04e67228..d8d7534e5c7 100644
--- a/tools/llvm-link/llvm-link.cpp
+++ b/tools/llvm-link/llvm-link.cpp
@@ -13,17 +13,19 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Linker.h"
-#include "llvm/LLVMContext.h"
-#include "llvm/Module.h"
 #include "llvm/Analysis/Verifier.h"
 #include "llvm/Bitcode/ReaderWriter.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IRReader/IRReader.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/Path.h"
 #include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Signals.h"
-#include "llvm/System/Path.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/SystemUtils.h"
+#include "llvm/Support/ToolOutputFile.h"
 #include <memory>
 using namespace llvm;
 
@@ -35,7 +37,12 @@ static cl::opt<std::string>
 OutputFilename("o", cl::desc("Override output filename"), cl::init("-"),
                cl::value_desc("filename"));
 
-static cl::opt<bool> Force("f", cl::desc("Overwrite output files"));
+static cl::opt<bool>
+Force("f", cl::desc("Enable binary output on terminals"));
+
+static cl::opt<bool>
+OutputAssembly("S",
+         cl::desc("Write output as LLVM assembly"), cl::Hidden);
 
 static cl::opt<bool>
 Verbose("v", cl::desc("Print information about actions taken"));
@@ -46,37 +53,17 @@ DumpAsm("d", cl::desc("Print assembly as linked"), cl::Hidden);
 // LoadFile - Read the specified bitcode file in and return it.  This routine
 // searches the link path for the specified file to try to find it...
 //
-static inline std::auto_ptr<Module> LoadFile(const std::string &FN, 
-                                             LLVMContext& Context) {
-  sys::Path Filename;
-  if (!Filename.set(FN)) {
-    errs() << "Invalid file name: '" << FN << "'\n";
-    return std::auto_ptr<Module>();
-  }
-
-  std::string ErrorMessage;
-  if (Filename.exists()) {
-    if (Verbose) errs() << "Loading '" << Filename.c_str() << "'\n";
-    Module* Result = 0;
-    
-    const std::string &FNStr = Filename.str();
-    if (MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(FNStr,
-                                                            &ErrorMessage)) {
-      Result = ParseBitcodeFile(Buffer, Context, &ErrorMessage);
-      delete Buffer;
-    }
-    if (Result) return std::auto_ptr<Module>(Result);   // Load successful!
+static inline Module *LoadFile(const char *argv0, const std::string &FN,
+                               LLVMContext& Context) {
+  SMDiagnostic Err;
+  if (Verbose) errs() << "Loading '" << FN << "'\n";
+  Module* Result = 0;
 
-    if (Verbose) {
-      errs() << "Error opening bitcode file: '" << Filename.c_str() << "'";
-      if (ErrorMessage.size()) errs() << ": " << ErrorMessage;
-      errs() << "\n";
-    }
-  } else {
-    errs() << "Bitcode file: '" << Filename.c_str() << "' does not exist.\n";
-  }
+  Result = ParseIRFile(FN, Err, Context);
+  if (Result) return Result;   // Load successful!
 
-  return std::auto_ptr<Module>();
+  Err.print(argv0, errs());
+  return NULL;
 }
 
 int main(int argc, char **argv) {
@@ -91,15 +78,17 @@ int main(int argc, char **argv) {
   unsigned BaseArg = 0;
   std::string ErrorMessage;
 
-  std::auto_ptr<Module> Composite(LoadFile(InputFilenames[BaseArg], Context));
+  OwningPtr<Module> Composite(LoadFile(argv[0],
+                                       InputFilenames[BaseArg], Context));
   if (Composite.get() == 0) {
     errs() << argv[0] << ": error loading file '"
            << InputFilenames[BaseArg] << "'\n";
     return 1;
   }
 
+  Linker L(Composite.get());
   for (unsigned i = BaseArg+1; i < InputFilenames.size(); ++i) {
-    std::auto_ptr<Module> M(LoadFile(InputFilenames[i], Context));
+    OwningPtr<Module> M(LoadFile(argv[0], InputFilenames[i], Context));
     if (M.get() == 0) {
       errs() << argv[0] << ": error loading file '" <<InputFilenames[i]<< "'\n";
       return 1;
@@ -107,42 +96,36 @@ int main(int argc, char **argv) {
 
     if (Verbose) errs() << "Linking in '" << InputFilenames[i] << "'\n";
 
-    if (Linker::LinkModules(Composite.get(), M.get(), &ErrorMessage)) {
+    if (L.linkInModule(M.get(), &ErrorMessage)) {
       errs() << argv[0] << ": link error in '" << InputFilenames[i]
              << "': " << ErrorMessage << "\n";
       return 1;
     }
   }
 
-  // TODO: Iterate over the -l list and link in any modules containing
-  // global symbols that have not been resolved so far.
-
-  if (DumpAsm) errs() << "Here's the assembly:\n" << *Composite.get();
+  if (DumpAsm) errs() << "Here's the assembly:\n" << *Composite;
 
   std::string ErrorInfo;
-  std::auto_ptr<raw_ostream> 
-  Out(new raw_fd_ostream(OutputFilename.c_str(), ErrorInfo,
-                         raw_fd_ostream::F_Binary |
-                         (Force ? raw_fd_ostream::F_Force : 0)));
+  tool_output_file Out(OutputFilename.c_str(), ErrorInfo,
+                       raw_fd_ostream::F_Binary);
   if (!ErrorInfo.empty()) {
     errs() << ErrorInfo << '\n';
-    if (!Force)
-      errs() << "Use -f command line argument to force output\n";
     return 1;
   }
 
-    // Make sure that the Out file gets unlinked from the disk if we get a
-    // SIGINT
-  if (OutputFilename != "-")
-    sys::RemoveFileOnSignal(sys::Path(OutputFilename));
-
-  if (verifyModule(*Composite.get())) {
+  if (verifyModule(*Composite)) {
     errs() << argv[0] << ": linked module is broken!\n";
     return 1;
   }
 
   if (Verbose) errs() << "Writing bitcode...\n";
-  WriteBitcodeToFile(Composite.get(), *Out);
+  if (OutputAssembly) {
+    Out.os() << *Composite;
+  } else if (Force || !CheckBitcodeOutputToConsole(Out.os(), true))
+    WriteBitcodeToFile(Composite.get(), Out.os());
+
+  // Declare success.
+  Out.keep();
 
   return 0;
 }