From: Reid Spencer <rspencer@reidspencer.com>
Date: Mon, 13 Dec 2004 02:59:52 +0000 (+0000)
Subject: For PR351: \
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=e84de29663f4b8fc0540218540b93b74ca145e1b;p=oota-llvm.git

For PR351: \
* Remove redundant static function LinkOneLibrary. \
* Remove unneded #includes \
* Convert FileSupport usage to sys::Path instead


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18857 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Linker/LinkItems.cpp b/lib/Linker/LinkItems.cpp
index d055a4d0285..f43166c861b 100644
--- a/lib/Linker/LinkItems.cpp
+++ b/lib/Linker/LinkItems.cpp
@@ -14,98 +14,22 @@
 
 #include "llvm/Linker.h"
 #include "llvm/Module.h"
-#include "llvm/ModuleProvider.h"
-#include "llvm/PassManager.h"
-#include "llvm/ADT/SetOperations.h"
-#include "llvm/Bytecode/Reader.h"
-#include "llvm/Bytecode/Archive.h"
-#include "llvm/Bytecode/WriteBytecodePass.h"
-#include "llvm/Target/TargetData.h"
-#include "llvm/Transforms/IPO.h"
-#include "llvm/Transforms/Scalar.h"
-#include "llvm/Config/config.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/FileUtilities.h"
-#include "llvm/Support/Timer.h"
-#include "llvm/System/Signals.h"
-#include "llvm/Support/SystemUtils.h"
-#include <algorithm>
-#include <fstream>
-#include <memory>
-#include <set>
-using namespace llvm;
-
-static bool 
-LinkOneLibrary(const char*progname, Module* HeadModule, 
-               const std::string& Lib, 
-               const std::vector<std::string>& LibPaths,
-               bool Verbose, bool Native) {
-
-  // String in which to receive error messages.
-  std::string ErrorMessage;
-
-  // Determine where this library lives.
-  std::string Pathname = FindLib(Lib, LibPaths);
-  if (Pathname.empty()) {
-    // If the pathname does not exist, then simply return if we're doing a 
-    // native link and give a warning if we're doing a bytecode link.
-    if (!Native) {
-      std::cerr << progname << ": warning: Cannot find library '"
-                << Lib << "'\n";
-      return false;
-    }
-  }
-
-  // A user may specify an ar archive without -l, perhaps because it
-  // is not installed as a library. Detect that and link the library.
-  if (IsArchive(Pathname)) {
-    if (Verbose)
-      std::cerr << "Trying to link archive '" << Pathname << "' (-l"
-                << Lib << ")\n";
 
-    if (LinkInArchive(HeadModule, Pathname, &ErrorMessage, Verbose)) {
-      std::cerr << progname << ": " << ErrorMessage
-                << ": Error linking in archive '" << Pathname << "' (-l"
-                << Lib << ")\n";
-      return true;
-    }
-  } else {
-      std::cerr << progname << ": WARNING: Supposed library -l"
-                << Lib << " isn't a library.\n";
-  }
-  return false;
-}
+using namespace llvm;
 
 // LinkItems - preserve link order for an arbitrary set of linkage items.
-Module* 
-llvm::LinkItems(const char *progname, const LinkItemList& Items,
-                const std::vector<std::string>& LibPaths,
-                bool Verbose, bool Native) {
-
-  // Construct the HeadModule to contain the result of the linkage
-  std::auto_ptr<Module> HeadModule(new Module(progname));
-
-  // Construct a mutable path list we can add paths to. This list will always
-  // have LLVM_LIB_SEARCH_PATH at the end so we place it there now.
-  std::vector<std::string> MyLibPaths(LibPaths);
-  MyLibPaths.insert(MyLibPaths.begin(),".");
-  char* SearchPath = getenv("LLVM_LIB_SEARCH_PATH");
-  if (SearchPath)
-    MyLibPaths.push_back(SearchPath);
-
+bool
+Linker::LinkInItems(const ItemList& Items) {
   // For each linkage item ...
-  for (LinkItemList::const_iterator I = Items.begin(), E = Items.end(); 
+  for (ItemList::const_iterator I = Items.begin(), E = Items.end(); 
        I != E; ++I) {
     if (I->second) {
       // Link in the library suggested.
-      if (LinkOneLibrary(progname,HeadModule.get(),I->first,MyLibPaths,
-                     Verbose,Native))
-        return 0;
+      if (LinkInLibrary(I->first))
+        return true;
     } else {
-      std::vector<std::string> Files;
-      Files.push_back(I->first);
-      if (LinkFiles(progname,HeadModule.get(),Files,Verbose))
-        return 0;
+      if (LinkInFile(sys::Path(I->first)))
+        return true;
     }
   }
 
@@ -114,46 +38,12 @@ llvm::LinkItems(const char *progname, const LinkItemList& Items,
   // that module should also be aggregated with duplicates eliminated. This is
   // now the time to process the dependent libraries to resolve any remaining
   // symbols.
-  const Module::LibraryListType& DepLibs = HeadModule->getLibraries();
+  const Module::LibraryListType& DepLibs = Composite->getLibraries();
   for (Module::LibraryListType::const_iterator I = DepLibs.begin(), 
       E = DepLibs.end(); I != E; ++I) {
-    if(LinkOneLibrary(progname,HeadModule.get(),*I,MyLibPaths,Verbose,Native))
-      return 0;
+    if(LinkInLibrary(*I))
+      return true;
   }
 
-  return HeadModule.release();
-}
-
-// BuildLinkItems -- This function
-void llvm::BuildLinkItems(
-  LinkItemList& Items,
-  const cl::list<std::string>& Files,
-  const cl::list<std::string>& Libraries) {
-
-  // Build the list of linkage items for LinkItems. 
-
-  cl::list<std::string>::const_iterator fileIt = Files.begin();
-  cl::list<std::string>::const_iterator libIt  = Libraries.begin();
-
-  int libPos = -1, filePos = -1;
-  while ( 1 ) {
-    if (libIt != Libraries.end())
-      libPos = Libraries.getPosition(libIt - Libraries.begin());
-    else
-      libPos = -1;
-    if (fileIt != Files.end())
-      filePos = Files.getPosition(fileIt - Files.begin());
-    else
-      filePos = -1;
-
-    if (filePos != -1 && (libPos == -1 || filePos < libPos)) {
-      // Add a source file
-      Items.push_back(std::make_pair(*fileIt++, false));
-    } else if (libPos != -1 && (filePos == -1 || libPos < filePos)) {
-      // Add a library
-      Items.push_back(std::make_pair(*libIt++, true));
-    } else {
-        break; // we're done with the list
-    }
-  }
+  return false;
 }