-fPIC is required on x86-64 when building shared objects.

llvm-svn: 49274

llvm/tools/bugpoint/Miscompilation.cpp

@@ -907,7 +907,7 @@ bool BugDriver::debugCodeGenerator() {
 #if defined(sparc) || defined(__sparc__) || defined(__sparcv9)
             << " -G"            // Compile a shared library, `-G' for Sparc
 #else
-            << " -shared"       // `-shared' for Linux/X86, maybe others
+            << " -fPIC -shared"       // `-shared' for Linux/X86, maybe others
 #endif
             << " -fno-strict-aliasing\n";
 

llvm/tools/bugpoint/ToolRunner.cpp

@@ -572,7 +572,7 @@ int GCC::MakeSharedObject(const std::string &InputFile, FileType fileType,
   GCCArgs.push_back("-shared");  // `-shared' for Linux/X86, maybe others
 #endif
 
-#if defined(__ia64__) || defined(__alpha__)
+#if defined(__ia64__) || defined(__alpha__) || defined(__amd64__)
   GCCArgs.push_back("-fPIC");   // Requires shared objs to contain PIC
 #endif
 #ifdef __sparc__