Remove "lto_on_osx" xfails, now that -rdynamic works on Darwin.

Note that this will require a recent version of the linker for Darwin
builds with LTO to pass these tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187711 91177308-0d34-0410-b5e6-96231b3b80d8

test/BugPoint/crash-narrowfunctiontest.ll

@@ -2,7 +2,6 @@
 ;
 ; RUN: bugpoint -load %llvmshlibdir/BugpointPasses%shlibext %s -output-prefix %t -bugpoint-crashcalls -silence-passes > /dev/null
 ; REQUIRES: loadable_module
-; XFAIL: lto_on_osx
 
 define i32 @foo() { ret i32 1 }
 

test/BugPoint/metadata.ll

@@ -1,7 +1,6 @@
 ; 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_on_osx
 
 ; Bugpoint should keep the call's metadata attached to the call.
 

test/BugPoint/remove_arguments_test.ll

@@ -1,7 +1,6 @@
 ; 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_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.

test/Feature/load_module.ll

@@ -2,7 +2,6 @@
 ; RUN: opt < %s -load=%llvmshlibdir/LLVMHello%shlibext -hello \
 ; RUN:   -disable-output 2>&1 | grep Hello
 ; REQUIRES: loadable_module
-; XFAIL: lto_on_osx
 ; FIXME: On Cygming, it might fail without building LLVMHello manually.
 
 @junk = global i32 0

test/lit.cfg

@@ -264,10 +264,6 @@ else:
 if loadable_module:
     config.available_features.add('loadable_module')
 
-# LTO on OS X
-if config.lto_is_enabled == "1" and platform.system() == "Darwin":
-    config.available_features.add('lto_on_osx')
-
 # Sanitizers.
 if config.llvm_use_sanitizer == "Address":
     config.available_features.add("asan")