diff --git a/lldb/lldb.xcodeproj/project.pbxproj b/lldb/lldb.xcodeproj/project.pbxproj
index c7bbd5526539aca3e11b69b8d1e227bc0cc0b9d8..f226042eef1dd881d804d6952cf35fc1aaf69324 100644
--- a/lldb/lldb.xcodeproj/project.pbxproj
+++ b/lldb/lldb.xcodeproj/project.pbxproj
@@ -2756,7 +2756,7 @@
 					"$(LLVM_BUILD_DIR)",
 				);
 				LLVM_BUILD_DIR = "$(SRCROOT)/llvm";
-				LLVM_CONFIGURATION = Release;
+				LLVM_CONFIGURATION = "Release+Asserts";
 				OTHER_CFLAGS = (
 					"-DFOR_DYLD=0",
 					"-DSUPPORT_REMOTE_UNWINDING",
@@ -2809,7 +2809,7 @@
 					"$(LLVM_BUILD_DIR)",
 				);
 				LLVM_BUILD_DIR = "$(SRCROOT)/llvm";
-				LLVM_CONFIGURATION = Release;
+				LLVM_CONFIGURATION = "Release+Asserts";
 				OTHER_CFLAGS = (
 					"-DFOR_DYLD=0",
 					"-DSUPPORT_REMOTE_UNWINDING",
diff --git a/lldb/scripts/build-llvm.pl b/lldb/scripts/build-llvm.pl
index d0f3078bec4b5ebd3d91a233b9849cc85ffb7f94..aaf7d8e951ce982710691b37305377c05bbfdc12 100644
--- a/lldb/scripts/build-llvm.pl
+++ b/lldb/scripts/build-llvm.pl
@@ -395,6 +395,10 @@ sub create_single_llvm_arhive_for_arch
                 print FILES "$archive_fullpath\n";
             }
 		}
+        else
+        {
+            print "warning: archive doesn't exist: '$archive_fullpath'\n";
+        }
 	}
 	close (FILES);
     do_command ("libtool -static -o '$arch_output_file' -filelist '$files'");
diff --git a/lldb/source/Expression/IRForTarget.cpp b/lldb/source/Expression/IRForTarget.cpp
index 8876109448e1e146260caeebc5eefe29e26f13dd..fc8b0393bc2854cac8f36605decd6a066b61e375 100644
--- a/lldb/source/Expression/IRForTarget.cpp
+++ b/lldb/source/Expression/IRForTarget.cpp
@@ -86,8 +86,6 @@ IRForTarget::MaybeHandleVariable(Module &M,
                                  llvm::Value *V,
                                  bool Store)
 {
-    lldb_private::Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS);
-
     if (GlobalVariable *global_variable = dyn_cast<GlobalVariable>(V))
     {        
         clang::NamedDecl *named_decl = DeclForGlobalValue(M, global_variable);