Revert "Update ART for LLVM merge up to r187914."

This reverts commit 70814f7746793934a29e010211ef6e652ad75cd2.
diff --git a/compiler/dex/portable/mir_to_gbc.cc b/compiler/dex/portable/mir_to_gbc.cc
index 90cec75..7831cf6 100644
--- a/compiler/dex/portable/mir_to_gbc.cc
+++ b/compiler/dex/portable/mir_to_gbc.cc
@@ -1972,7 +1972,7 @@
 
     ::llvm::OwningPtr< ::llvm::tool_output_file> out_file(
         new ::llvm::tool_output_file(fname.c_str(), errmsg,
-                                   ::llvm::sys::fs::F_Binary));
+                                   ::llvm::raw_fd_ostream::F_Binary));
 
     if (!errmsg.empty()) {
       LOG(ERROR) << "Failed to create bitcode output file: " << errmsg;
diff --git a/compiler/llvm/llvm_compilation_unit.cc b/compiler/llvm/llvm_compilation_unit.cc
index 139100b..aa439cc 100644
--- a/compiler/llvm/llvm_compilation_unit.cc
+++ b/compiler/llvm/llvm_compilation_unit.cc
@@ -214,6 +214,7 @@
   ::llvm::TargetOptions target_options;
   target_options.FloatABIType = ::llvm::FloatABI::Soft;
   target_options.NoFramePointerElim = true;
+  target_options.NoFramePointerElimNonLeaf = true;
   target_options.UseSoftFloat = false;
   target_options.EnableFastISel = false;
 
@@ -257,7 +258,7 @@
 
     ::llvm::OwningPtr< ::llvm::tool_output_file> out_file(
       new ::llvm::tool_output_file(bitcode_filename_.c_str(), errmsg,
-                                 ::llvm::sys::fs::F_Binary));
+                                 ::llvm::raw_fd_ostream::F_Binary));
 
 
     if (!errmsg.empty()) {
@@ -277,6 +278,7 @@
   // pm_builder.Inliner = ::llvm::createAlwaysInlinerPass();
   // pm_builder.Inliner = ::llvm::createPartialInliningPass();
   pm_builder.OptLevel = 3;
+  pm_builder.DisableSimplifyLibCalls = 1;
   pm_builder.DisableUnitAtATime = 1;
   pm_builder.populateFunctionPassManager(fpm);
   pm_builder.populateModulePassManager(pm);