Fix unexpected passes. These test do work with LTO on linux. I tested both
a cmake and an autoconf build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166748 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/BugPoint/crash-narrowfunctiontest.ll b/test/BugPoint/crash-narrowfunctiontest.ll
index 9df823a..c812836 100644
--- a/test/BugPoint/crash-narrowfunctiontest.ll
+++ b/test/BugPoint/crash-narrowfunctiontest.ll
@@ -2,7 +2,7 @@
 ;
 ; RUN: bugpoint -load %llvmshlibdir/BugpointPasses%shlibext %s -output-prefix %t -bugpoint-crashcalls -silence-passes > /dev/null
 ; REQUIRES: loadable_module
-; XFAIL: lto
+; XFAIL: lto_on_osx
 
 define i32 @foo() { ret i32 1 }
 
diff --git a/test/BugPoint/metadata.ll b/test/BugPoint/metadata.ll
index 98c79ee..6dc9574 100644
--- a/test/BugPoint/metadata.ll
+++ b/test/BugPoint/metadata.ll
@@ -1,7 +1,7 @@
 ; RUN: bugpoint -load %llvmshlibdir/BugpointPasses%shlibext %s -output-prefix %t -bugpoint-crashcalls -silence-passes > /dev/null
 ; RUN: llvm-dis %t-reduced-simplified.bc -o - | FileCheck %s
 ; REQUIRES: loadable_module
-; XFAIL: lto
+; XFAIL: lto_on_osx
 
 ; Bugpoint should keep the call's metadata attached to the call.
 
diff --git a/test/BugPoint/remove_arguments_test.ll b/test/BugPoint/remove_arguments_test.ll
index 13aa9c5..5a45f84 100644
--- a/test/BugPoint/remove_arguments_test.ll
+++ b/test/BugPoint/remove_arguments_test.ll
@@ -1,7 +1,7 @@
 ; RUN: bugpoint -load %llvmshlibdir/BugpointPasses%shlibext %s -output-prefix %t -bugpoint-crashcalls -silence-passes
 ; RUN: llvm-dis %t-reduced-simplified.bc -o - | FileCheck %s
 ; REQUIRES: loadable_module
-; XFAIL: lto
+; XFAIL: lto_on_osx
 
 ; Test to make sure that arguments are removed from the function if they are 
 ; unnecessary. And clean up any types that that frees up too.
diff --git a/test/lit.cfg b/test/lit.cfg
index 7e6760e..7f26cdf 100644
--- a/test/lit.cfg
+++ b/test/lit.cfg
@@ -5,6 +5,7 @@
 import os
 import sys
 import re
+import platform
 
 # name: The name of this test suite.
 config.name = 'LLVM'
@@ -241,9 +242,9 @@
 if loadable_module:
     config.available_features.add('loadable_module')
 
-# LTO
-if config.lto_is_enabled == "1":
-    config.available_features.add('lto')
+# LTO on OS X
+if config.lto_is_enabled == "1" and platform.system() == "Darwin":
+    config.available_features.add('lto_on_osx')
 
 # llc knows whether he is compiled with -DNDEBUG.
 import subprocess