Improve error handling in the linker by:

1. Eliminate redundant error messages. LinkInFile and LinkInArchive
   already call the error() method in each case so there's no use
   telling the user again that an item couldn't be linked in.

2. Improve the formatting of error messages (separating content).

3. Change the wording for the warning about unrecognized files. Make
   it clear that the file is being ignored.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41121 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Linker/LinkItems.cpp b/lib/Linker/LinkItems.cpp
index 976dee0353af059b6a83b60c0e245c62f44dd94d..95050d0750dd959c725c81fdcbec928d4e41b4d3 100644 (file)
--- a/lib/Linker/LinkItems.cpp
+++ b/lib/Linker/LinkItems.cpp
@@ -87,7 +87,7 @@ bool Linker::LinkInLibrary(const std::string& Lib, bool& is_native) {
     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:
@@ -180,24 +180,24 @@ bool Linker::LinkInFile(const sys::Path &File, bool &is_native) {
   switch (sys::IdentifyFileType(Magic.c_str(), 64)) {
     default: assert(0 && "Bad file type identification");
     case sys::Unknown_FileType:
-      return warning("Supposed object file '" + File.toString() + 
-                     "' not recognized as such");
+      return warning("Ignoring file '" + File.toString() + 
+                   "' 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() + "'");
       std::auto_ptr<Module> M(LoadObject(File));
       if (M.get() == 0)
-        return error("Cannot load file '" + File.toString() + "'" + Error);
+        return error("Cannot load file '" + File.toString() + "': " + Error);
       if (LinkInModule(M.get(), &Error))
-        return error("Cannot link file '" + File.toString() + "'" + Error);
+        return error("Cannot link file '" + File.toString() + "': " + Error);
 
       verbose("Linked in file '" + File.toString() + "'");
       break;