The t2MOVi16 and t2MOVTi16 instructions do not set CPSR. Trying to add

[oota-llvm.git] / lib / Linker / LinkItems.cpp

diff --git a/lib/Linker/LinkItems.cpp b/lib/Linker/LinkItems.cpp
index 3cf1f6bd8cdb8de966139a3fbf42edb1e449a65c..1be2becc86c38a704422c980bee378a86f7c12b3 100644 (file)
--- a/lib/Linker/LinkItems.cpp
+++ b/lib/Linker/LinkItems.cpp
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Reid Spencer and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -14,7 +14,10 @@
 
 #include "llvm/Linker.h"
 #include "llvm/Module.h"
-
+#include "llvm/Bitcode/ReaderWriter.h"
+#include "llvm/System/Path.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/MemoryBuffer.h"
 using namespace llvm;
 
 // LinkItems - This function is the main entry point into linking. It takes a
@@ -67,30 +70,30 @@ Linker::LinkInItems(const ItemList& Items, ItemList& NativeItems) {
 
 /// LinkInLibrary - links one library into the HeadModule.
 ///
-bool Linker::LinkInLibrary(const std::string& Lib, bool& is_native) {
+bool Linker::LinkInLibrary(StringRef Lib, bool& is_native) {
   is_native = false;
   // Determine where this library lives.
   sys::Path Pathname = FindLib(Lib);
   if (Pathname.isEmpty())
-    return warning("Cannot find library '" + Lib + "'");
+    return error("Cannot find library '" + Lib.str() + "'");
 
   // If its an archive, try to link it in
   std::string Magic;
   Pathname.getMagicNumber(Magic, 64);
   switch (sys::IdentifyFileType(Magic.c_str(), 64)) {
-    default: assert(0 && "Bad file type identification");
+    default: llvm_unreachable("Bad file type identification");
     case sys::Unknown_FileType:
-      return warning("Supposed library '" + Lib + "' isn't a library.");
+      return warning("Supposed library '" + Lib.str() + "' isn't a library.");
 
     case sys::Bitcode_FileType:
       // LLVM ".so" file.
       if (LinkInFile(Pathname, is_native))
-        return error("Cannot link file '" + Pathname.toString() + "'");
+        return true;
       break;
 
     case sys::Archive_FileType:
       if (LinkInArchive(Pathname, is_native))
-        return error("Cannot link archive '" + Pathname.toString() + "'");
+        return error("Cannot link archive '" + Pathname.str() + "'");
       break;
 
     case sys::ELF_Relocatable_FileType:
@@ -153,36 +156,52 @@ bool Linker::LinkInLibraries(const std::vector<std::string> &Libraries) {
 ///
 bool Linker::LinkInFile(const sys::Path &File, bool &is_native) {
   is_native = false;
-  // Make sure we can at least read the file
-  if (!File.canRead())
-    return error("Cannot find linker input '" + File.toString() + "'");
+  
+  // Check for a file of name "-", which means "read standard input"
+  if (File.str() == "-") {
+    std::auto_ptr<Module> M;
+    if (MemoryBuffer *Buffer = MemoryBuffer::getSTDIN(&Error)) {
+      if (!Buffer->getBufferSize()) {
+        delete Buffer;
+        Error = "standard input is empty";
+      } else {
+        M.reset(ParseBitcodeFile(Buffer, Context, &Error));
+        delete Buffer;
+        if (M.get())
+          if (!LinkInModule(M.get(), &Error))
+            return false;
+      }
+    }
+    return error("Cannot link stdin: " + Error);
+  }
 
-  // If its an archive, try to link it in
+  // Determine what variety of file it is.
   std::string Magic;
-  File.getMagicNumber(Magic, 64);
+  if (!File.getMagicNumber(Magic, 64))
+    return error("Cannot find linker input '" + File.str() + "'");
+
   switch (sys::IdentifyFileType(Magic.c_str(), 64)) {
-    default: assert(0 && "Bad file type identification");
+    default: llvm_unreachable("Bad file type identification");
     case sys::Unknown_FileType:
-      return warning("Supposed object file '" + File.toString() + 
-                     "' not recognized as such");
+      return warning("Ignoring file '" + File.str() + 
+                   "' because does not contain bitcode.");
 
     case sys::Archive_FileType:
       // A user may specify an ar archive without -l, perhaps because it
       // is not installed as a library. Detect that and link the archive.
-      verbose("Linking archive file '" + File.toString() + "'");
       if (LinkInArchive(File, is_native))
-        return error("Cannot link archive '" + File.toString() + "'");
+        return true;
       break;
 
     case sys::Bitcode_FileType: {
-      verbose("Linking bitcode file '" + File.toString() + "'");
+      verbose("Linking bitcode file '" + File.str() + "'");
       std::auto_ptr<Module> M(LoadObject(File));
       if (M.get() == 0)
-        return error("Cannot load file '" + File.toString() + "'" + Error);
-      if (LinkInModule(M.get()))
-        return error("Cannot link file '" + File.toString() + "'" + Error);
+        return error("Cannot load file '" + File.str() + "': " + Error);
+      if (LinkInModule(M.get(), &Error))
+        return error("Cannot link file '" + File.str() + "': " + Error);
 
-      verbose("Linked in file '" + File.toString() + "'");
+      verbose("Linked in file '" + File.str() + "'");
       break;
     }