Fix cpplint build/namespaces issues

Change-Id: I19c68703270c1482d6c6aad8cdf97d3d2924360a
diff --git a/compiler/image_writer.cc b/compiler/image_writer.cc
index 7fd1a7c..f395428 100644
--- a/compiler/image_writer.cc
+++ b/compiler/image_writer.cc
@@ -52,7 +52,14 @@
 #include "UniquePtr.h"
 #include "utils.h"
 
-using namespace art::mirror;
+using ::art::mirror::AbstractMethod;
+using ::art::mirror::Class;
+using ::art::mirror::DexCache;
+using ::art::mirror::EntryPointFromInterpreter;
+using ::art::mirror::Field;
+using ::art::mirror::Object;
+using ::art::mirror::ObjectArray;
+using ::art::mirror::String;
 
 namespace art {
 
diff --git a/compiler/jni/portable/jni_compiler.cc b/compiler/jni/portable/jni_compiler.cc
index 57b8a31..0e58378 100644
--- a/compiler/jni/portable/jni_compiler.cc
+++ b/compiler/jni/portable/jni_compiler.cc
@@ -41,7 +41,13 @@
 namespace art {
 namespace llvm {
 
-using namespace runtime_support;
+using ::art::llvm::runtime_support::JniMethodEnd;
+using ::art::llvm::runtime_support::JniMethodEndSynchronized;
+using ::art::llvm::runtime_support::JniMethodEndWithReference;
+using ::art::llvm::runtime_support::JniMethodEndWithReferenceSynchronized;
+using ::art::llvm::runtime_support::JniMethodStart;
+using ::art::llvm::runtime_support::JniMethodStartSynchronized;
+using ::art::llvm::runtime_support::RuntimeId;
 
 JniCompiler::JniCompiler(LlvmCompilationUnit* cunit,
                          const CompilerDriver& driver,
diff --git a/compiler/llvm/gbc_expander.cc b/compiler/llvm/gbc_expander.cc
index 94cc973..a2c6998 100644
--- a/compiler/llvm/gbc_expander.cc
+++ b/compiler/llvm/gbc_expander.cc
@@ -30,8 +30,6 @@
 #include "dex/compiler_ir.h"
 #include "dex/mir_graph.h"
 #include "dex/quick/mir_to_lir.h"
-using art::kMIRIgnoreNullCheck;
-using art::kMIRIgnoreRangeCheck;
 
 #include <llvm/ADT/STLExtras.h>
 #include <llvm/IR/Intrinsics.h>
@@ -44,13 +42,78 @@
 #include <map>
 #include <utility>
 
-using namespace art::llvm;
-
-using art::llvm::IntrinsicHelper;
+using ::art::kMIRIgnoreNullCheck;
+using ::art::kMIRIgnoreRangeCheck;
+using ::art::llvm::IRBuilder;
+using ::art::llvm::IntrinsicHelper;
+using ::art::llvm::JType;
+using ::art::llvm::RuntimeSupportBuilder;
+using ::art::llvm::kBoolean;
+using ::art::llvm::kByte;
+using ::art::llvm::kChar;
+using ::art::llvm::kDouble;
+using ::art::llvm::kFloat;
+using ::art::llvm::kInt;
+using ::art::llvm::kLikely;
+using ::art::llvm::kLong;
+using ::art::llvm::kObject;
+using ::art::llvm::kShort;
+using ::art::llvm::kTBAAConstJObject;
+using ::art::llvm::kTBAAHeapArray;
+using ::art::llvm::kTBAAHeapInstance;
+using ::art::llvm::kTBAAHeapStatic;
+using ::art::llvm::kTBAARegister;
+using ::art::llvm::kTBAARuntimeInfo;
+using ::art::llvm::kTBAAShadowFrame;
+using ::art::llvm::kUnlikely;
+using ::art::llvm::kVoid;
+using ::art::llvm::runtime_support::AllocArray;
+using ::art::llvm::runtime_support::AllocArrayWithAccessCheck;
+using ::art::llvm::runtime_support::AllocObject;
+using ::art::llvm::runtime_support::AllocObjectWithAccessCheck;
+using ::art::llvm::runtime_support::CheckAndAllocArray;
+using ::art::llvm::runtime_support::CheckAndAllocArrayWithAccessCheck;
+using ::art::llvm::runtime_support::CheckCast;
+using ::art::llvm::runtime_support::CheckPutArrayElement;
+using ::art::llvm::runtime_support::FillArrayData;
+using ::art::llvm::runtime_support::FindCatchBlock;
+using ::art::llvm::runtime_support::FindDirectMethodWithAccessCheck;
+using ::art::llvm::runtime_support::FindInterfaceMethod;
+using ::art::llvm::runtime_support::FindInterfaceMethodWithAccessCheck;
+using ::art::llvm::runtime_support::FindStaticMethodWithAccessCheck;
+using ::art::llvm::runtime_support::FindSuperMethodWithAccessCheck;
+using ::art::llvm::runtime_support::FindVirtualMethodWithAccessCheck;
+using ::art::llvm::runtime_support::Get32Instance;
+using ::art::llvm::runtime_support::Get32Static;
+using ::art::llvm::runtime_support::Get64Instance;
+using ::art::llvm::runtime_support::Get64Static;
+using ::art::llvm::runtime_support::GetObjectInstance;
+using ::art::llvm::runtime_support::GetObjectStatic;
+using ::art::llvm::runtime_support::InitializeStaticStorage;
+using ::art::llvm::runtime_support::InitializeType;
+using ::art::llvm::runtime_support::InitializeTypeAndVerifyAccess;
+using ::art::llvm::runtime_support::IsAssignable;
+using ::art::llvm::runtime_support::ResolveString;
+using ::art::llvm::runtime_support::RuntimeId;
+using ::art::llvm::runtime_support::Set32Instance;
+using ::art::llvm::runtime_support::Set32Static;
+using ::art::llvm::runtime_support::Set64Instance;
+using ::art::llvm::runtime_support::Set64Static;
+using ::art::llvm::runtime_support::SetObjectInstance;
+using ::art::llvm::runtime_support::SetObjectStatic;
+using ::art::llvm::runtime_support::ThrowDivZeroException;
+using ::art::llvm::runtime_support::ThrowException;
+using ::art::llvm::runtime_support::ThrowIndexOutOfBounds;
+using ::art::llvm::runtime_support::ThrowNullPointerException;
+using ::art::llvm::runtime_support::ThrowStackOverflowException;
+using ::art::llvm::runtime_support::art_d2i;
+using ::art::llvm::runtime_support::art_d2l;
+using ::art::llvm::runtime_support::art_f2i;
+using ::art::llvm::runtime_support::art_f2l;
 
 namespace art {
 extern char RemapShorty(char shortyType);
-};
+}  // namespace art
 
 namespace {
 
@@ -101,8 +164,7 @@
   // Helper function for GBC expansion
   //----------------------------------------------------------------------------
 
-  llvm::Value* ExpandToRuntime(runtime_support::RuntimeId rt,
-                               llvm::CallInst& inst);
+  llvm::Value* ExpandToRuntime(RuntimeId rt, llvm::CallInst& inst);
 
   uint64_t LV2UInt(llvm::Value* lv) {
     return llvm::cast<llvm::ConstantInt>(lv)->getZExtValue();
@@ -580,8 +642,7 @@
   }
 }
 
-llvm::Value* GBCExpanderPass::ExpandToRuntime(runtime_support::RuntimeId rt,
-                                              llvm::CallInst& inst) {
+llvm::Value* GBCExpanderPass::ExpandToRuntime(RuntimeId rt, llvm::CallInst& inst) {
   // Some GBC intrinsic can directly replace with IBC runtime. "Directly" means
   // the arguments passed to the GBC intrinsic are as the same as IBC runtime
   // function, therefore only called function is needed to change.
@@ -633,7 +694,7 @@
 
   // If stack overflow, throw exception.
   irb_.SetInsertPoint(block_exception);
-  irb_.CreateCall(irb_.GetRuntime(runtime_support::ThrowStackOverflowException));
+  irb_.CreateCall(irb_.GetRuntime(ThrowStackOverflowException));
 
   // Unwind.
   llvm::Type* ret_type = func->getReturnType();
@@ -1541,7 +1602,7 @@
   llvm::Value* array_elem_addr = EmitArrayGEP(array_addr, index_value, elem_jty);
 
   if (elem_jty == kObject) { // If put an object, check the type, and mark GC card table.
-    llvm::Function* runtime_func = irb_.GetRuntime(runtime_support::CheckPutArrayElement);
+    llvm::Function* runtime_func = irb_.GetRuntime(CheckPutArrayElement);
 
     irb_.CreateCall2(runtime_func, new_value, array_addr);
 
@@ -1575,11 +1636,11 @@
     llvm::Function* runtime_func;
 
     if (field_jty == kObject) {
-      runtime_func = irb_.GetRuntime(runtime_support::GetObjectInstance);
+      runtime_func = irb_.GetRuntime(GetObjectInstance);
     } else if (field_jty == kLong || field_jty == kDouble) {
-      runtime_func = irb_.GetRuntime(runtime_support::Get64Instance);
+      runtime_func = irb_.GetRuntime(Get64Instance);
     } else {
-      runtime_func = irb_.GetRuntime(runtime_support::Get32Instance);
+      runtime_func = irb_.GetRuntime(Get32Instance);
     }
 
     llvm::ConstantInt* field_idx_value = irb_.getInt32(field_idx);
@@ -1643,11 +1704,11 @@
     }
 
     if (field_jty == kObject) {
-      runtime_func = irb_.GetRuntime(runtime_support::SetObjectInstance);
+      runtime_func = irb_.GetRuntime(SetObjectInstance);
     } else if (field_jty == kLong || field_jty == kDouble) {
-      runtime_func = irb_.GetRuntime(runtime_support::Set64Instance);
+      runtime_func = irb_.GetRuntime(Set64Instance);
     } else {
-      runtime_func = irb_.GetRuntime(runtime_support::Set32Instance);
+      runtime_func = irb_.GetRuntime(Set32Instance);
     }
 
     llvm::Value* field_idx_value = irb_.getInt32(field_idx);
@@ -1701,8 +1762,7 @@
 
     llvm::Value* thread_object_addr = irb_.Runtime().EmitGetCurrentThread();
 
-    llvm::Function* runtime_func =
-      irb_.GetRuntime(runtime_support::InitializeTypeAndVerifyAccess);
+    llvm::Function* runtime_func = irb_.GetRuntime(InitializeTypeAndVerifyAccess);
 
     EmitUpdateDexPC(dex_pc);
 
@@ -1741,7 +1801,7 @@
     // Failback routine to load the class object
     irb_.SetInsertPoint(block_load_class);
 
-    llvm::Function* runtime_func = irb_.GetRuntime(runtime_support::InitializeType);
+    llvm::Function* runtime_func = irb_.GetRuntime(InitializeType);
 
     llvm::Constant* type_idx_value = irb_.getInt32(type_idx);
 
@@ -1796,7 +1856,7 @@
   // Failback routine to load the class object
   irb_.SetInsertPoint(block_load_static);
 
-  llvm::Function* runtime_func = irb_.GetRuntime(runtime_support::InitializeStaticStorage);
+  llvm::Function* runtime_func = irb_.GetRuntime(InitializeStaticStorage);
 
   llvm::Constant* type_idx_value = irb_.getInt32(type_idx);
 
@@ -1846,11 +1906,11 @@
     llvm::Function* runtime_func;
 
     if (field_jty == kObject) {
-      runtime_func = irb_.GetRuntime(runtime_support::GetObjectStatic);
+      runtime_func = irb_.GetRuntime(GetObjectStatic);
     } else if (field_jty == kLong || field_jty == kDouble) {
-      runtime_func = irb_.GetRuntime(runtime_support::Get64Static);
+      runtime_func = irb_.GetRuntime(Get64Static);
     } else {
-      runtime_func = irb_.GetRuntime(runtime_support::Get32Static);
+      runtime_func = irb_.GetRuntime(Get32Static);
     }
 
     llvm::Constant* field_idx_value = irb_.getInt32(field_idx);
@@ -1928,11 +1988,11 @@
     llvm::Function* runtime_func;
 
     if (field_jty == kObject) {
-      runtime_func = irb_.GetRuntime(runtime_support::SetObjectStatic);
+      runtime_func = irb_.GetRuntime(SetObjectStatic);
     } else if (field_jty == kLong || field_jty == kDouble) {
-      runtime_func = irb_.GetRuntime(runtime_support::Set64Static);
+      runtime_func = irb_.GetRuntime(Set64Static);
     } else {
-      runtime_func = irb_.GetRuntime(runtime_support::Set32Static);
+      runtime_func = irb_.GetRuntime(Set32Static);
     }
 
     if (field_jty == kFloat) {
@@ -2029,7 +2089,7 @@
     // String is not resolved yet, resolve it now.
     irb_.SetInsertPoint(block_str_resolve);
 
-    llvm::Function* runtime_func = irb_.GetRuntime(runtime_support::ResolveString);
+    llvm::Function* runtime_func = irb_.GetRuntime(ResolveString);
 
     llvm::Value* method_object_addr = EmitLoadMethodObjectAddr();
 
@@ -2141,7 +2201,7 @@
 
   EmitUpdateDexPC(dex_pc);
 
-  irb_.CreateCall2(irb_.GetRuntime(runtime_support::CheckCast),
+  irb_.CreateCall2(irb_.GetRuntime(CheckCast),
                    type_object_addr, object_type_object_addr);
 
   EmitGuard_ExceptionLandingPad(dex_pc);
@@ -2209,7 +2269,7 @@
   // Test: Is the object instantiated from the subclass of the given class?
   irb_.SetInsertPoint(block_test_sub_class);
   llvm::Value* result =
-    irb_.CreateCall2(irb_.GetRuntime(runtime_support::IsAssignable),
+    irb_.CreateCall2(irb_.GetRuntime(IsAssignable),
                      type_object_addr, object_type_object_addr);
   irb_.CreateBr(block_cont);
 
@@ -2232,9 +2292,9 @@
   if (driver_->CanAccessInstantiableTypeWithoutChecks(dex_compilation_unit_->GetDexMethodIndex(),
                                                       *dex_compilation_unit_->GetDexFile(),
                                                       type_idx)) {
-    runtime_func = irb_.GetRuntime(runtime_support::AllocObject);
+    runtime_func = irb_.GetRuntime(AllocObject);
   } else {
-    runtime_func = irb_.GetRuntime(runtime_support::AllocObjectWithAccessCheck);
+    runtime_func = irb_.GetRuntime(AllocObjectWithAccessCheck);
   }
 
   llvm::Constant* type_index_value = irb_.getInt32(type_idx);
@@ -2373,7 +2433,7 @@
 
     // NOTE: We will check for the NullPointerException in the runtime.
 
-    llvm::Function* runtime_func = irb_.GetRuntime(runtime_support::FillArrayData);
+    llvm::Function* runtime_func = irb_.GetRuntime(FillArrayData);
 
     llvm::Value* method_object_addr = EmitLoadMethodObjectAddr();
 
@@ -2402,12 +2462,12 @@
 
   if (is_filled_new_array) {
     runtime_func = skip_access_check ?
-      irb_.GetRuntime(runtime_support::CheckAndAllocArray) :
-      irb_.GetRuntime(runtime_support::CheckAndAllocArrayWithAccessCheck);
+      irb_.GetRuntime(CheckAndAllocArray) :
+      irb_.GetRuntime(CheckAndAllocArrayWithAccessCheck);
   } else {
     runtime_func = skip_access_check ?
-      irb_.GetRuntime(runtime_support::AllocArray) :
-      irb_.GetRuntime(runtime_support::AllocArrayWithAccessCheck);
+      irb_.GetRuntime(AllocArray) :
+      irb_.GetRuntime(AllocArrayWithAccessCheck);
   }
 
   llvm::Constant* type_index_value = irb_.getInt32(type_idx);
@@ -2437,26 +2497,26 @@
 
   switch (invoke_type) {
   case art::kStatic:
-    runtime_func = irb_.GetRuntime(runtime_support::FindStaticMethodWithAccessCheck);
+    runtime_func = irb_.GetRuntime(FindStaticMethodWithAccessCheck);
     break;
 
   case art::kDirect:
-    runtime_func = irb_.GetRuntime(runtime_support::FindDirectMethodWithAccessCheck);
+    runtime_func = irb_.GetRuntime(FindDirectMethodWithAccessCheck);
     break;
 
   case art::kVirtual:
-    runtime_func = irb_.GetRuntime(runtime_support::FindVirtualMethodWithAccessCheck);
+    runtime_func = irb_.GetRuntime(FindVirtualMethodWithAccessCheck);
     break;
 
   case art::kSuper:
-    runtime_func = irb_.GetRuntime(runtime_support::FindSuperMethodWithAccessCheck);
+    runtime_func = irb_.GetRuntime(FindSuperMethodWithAccessCheck);
     break;
 
   case art::kInterface:
     if (is_fast_path) {
-      runtime_func = irb_.GetRuntime(runtime_support::FindInterfaceMethod);
+      runtime_func = irb_.GetRuntime(FindInterfaceMethod);
     } else {
-      runtime_func = irb_.GetRuntime(runtime_support::FindInterfaceMethodWithAccessCheck);
+      runtime_func = irb_.GetRuntime(FindInterfaceMethodWithAccessCheck);
     }
     break;
   }
@@ -2518,7 +2578,7 @@
 
   irb_.SetInsertPoint(block_exception);
   EmitUpdateDexPC(dex_pc);
-  irb_.CreateCall(irb_.GetRuntime(runtime_support::ThrowDivZeroException));
+  irb_.CreateCall(irb_.GetRuntime(ThrowDivZeroException));
   EmitBranchExceptionLandingPad(dex_pc);
 
   irb_.SetInsertPoint(block_continue);
@@ -2557,7 +2617,7 @@
 
     irb_.SetInsertPoint(block_exception);
     EmitUpdateDexPC(dex_pc);
-    irb_.CreateCall(irb_.GetRuntime(runtime_support::ThrowNullPointerException),
+    irb_.CreateCall(irb_.GetRuntime(ThrowNullPointerException),
                     irb_.getInt32(dex_pc));
     EmitBranchExceptionLandingPad(dex_pc);
 
@@ -2603,7 +2663,7 @@
     irb_.SetInsertPoint(block_exception);
 
     EmitUpdateDexPC(dex_pc);
-    irb_.CreateCall2(irb_.GetRuntime(runtime_support::ThrowIndexOutOfBounds), index, array_len);
+    irb_.CreateCall2(irb_.GetRuntime(ThrowIndexOutOfBounds), index, array_len);
     EmitBranchExceptionLandingPad(dex_pc);
 
     irb_.SetInsertPoint(block_continue);
@@ -2720,7 +2780,7 @@
   llvm::Value* ti_offset_value = irb_.getInt32(ti_offset);
 
   llvm::Value* catch_handler_index_value =
-    irb_.CreateCall2(irb_.GetRuntime(runtime_support::FindCatchBlock),
+    irb_.CreateCall2(irb_.GetRuntime(FindCatchBlock),
                      method_object_addr, ti_offset_value);
 
   // Switch instruction (Go to unwind basic block by default)
@@ -2825,14 +2885,14 @@
 
     //==- Exception --------------------------------------------------------==//
     case IntrinsicHelper::ThrowException: {
-      return ExpandToRuntime(runtime_support::ThrowException, call_inst);
+      return ExpandToRuntime(ThrowException, call_inst);
     }
     case IntrinsicHelper::HLThrowException: {
       uint32_t dex_pc = LV2UInt(call_inst.getMetadata("DexOff")->getOperand(0));
 
       EmitUpdateDexPC(dex_pc);
 
-      irb_.CreateCall(irb_.GetRuntime(runtime_support::ThrowException),
+      irb_.CreateCall(irb_.GetRuntime(ThrowException),
                       call_inst.getArgOperand(0));
 
       EmitGuard_ExceptionLandingPad(dex_pc);
@@ -2845,16 +2905,16 @@
       return irb_.Runtime().EmitIsExceptionPending();
     }
     case IntrinsicHelper::FindCatchBlock: {
-      return ExpandToRuntime(runtime_support::FindCatchBlock, call_inst);
+      return ExpandToRuntime(FindCatchBlock, call_inst);
     }
     case IntrinsicHelper::ThrowDivZeroException: {
-      return ExpandToRuntime(runtime_support::ThrowDivZeroException, call_inst);
+      return ExpandToRuntime(ThrowDivZeroException, call_inst);
     }
     case IntrinsicHelper::ThrowNullPointerException: {
-      return ExpandToRuntime(runtime_support::ThrowNullPointerException, call_inst);
+      return ExpandToRuntime(ThrowNullPointerException, call_inst);
     }
     case IntrinsicHelper::ThrowIndexOutOfBounds: {
-      return ExpandToRuntime(runtime_support::ThrowIndexOutOfBounds, call_inst);
+      return ExpandToRuntime(ThrowIndexOutOfBounds, call_inst);
     }
 
     //==- Const String -----------------------------------------------------==//
@@ -2865,7 +2925,7 @@
       return Expand_LoadStringFromDexCache(call_inst.getArgOperand(0));
     }
     case IntrinsicHelper::ResolveString: {
-      return ExpandToRuntime(runtime_support::ResolveString, call_inst);
+      return ExpandToRuntime(ResolveString, call_inst);
     }
 
     //==- Const Class ------------------------------------------------------==//
@@ -2873,13 +2933,13 @@
       return Expand_ConstClass(call_inst);
     }
     case IntrinsicHelper::InitializeTypeAndVerifyAccess: {
-      return ExpandToRuntime(runtime_support::InitializeTypeAndVerifyAccess, call_inst);
+      return ExpandToRuntime(InitializeTypeAndVerifyAccess, call_inst);
     }
     case IntrinsicHelper::LoadTypeFromDexCache: {
       return Expand_LoadTypeFromDexCache(call_inst.getArgOperand(0));
     }
     case IntrinsicHelper::InitializeType: {
-      return ExpandToRuntime(runtime_support::InitializeType, call_inst);
+      return ExpandToRuntime(InitializeType, call_inst);
     }
 
     //==- Lock -------------------------------------------------------------==//
@@ -2894,22 +2954,22 @@
 
     //==- Cast -------------------------------------------------------------==//
     case IntrinsicHelper::CheckCast: {
-      return ExpandToRuntime(runtime_support::CheckCast, call_inst);
+      return ExpandToRuntime(CheckCast, call_inst);
     }
     case IntrinsicHelper::HLCheckCast: {
       Expand_HLCheckCast(call_inst);
       return NULL;
     }
     case IntrinsicHelper::IsAssignable: {
-      return ExpandToRuntime(runtime_support::IsAssignable, call_inst);
+      return ExpandToRuntime(IsAssignable, call_inst);
     }
 
     //==- Alloc ------------------------------------------------------------==//
     case IntrinsicHelper::AllocObject: {
-      return ExpandToRuntime(runtime_support::AllocObject, call_inst);
+      return ExpandToRuntime(AllocObject, call_inst);
     }
     case IntrinsicHelper::AllocObjectWithAccessCheck: {
-      return ExpandToRuntime(runtime_support::AllocObjectWithAccessCheck, call_inst);
+      return ExpandToRuntime(AllocObjectWithAccessCheck, call_inst);
     }
 
     //==- Instance ---------------------------------------------------------==//
@@ -2931,17 +2991,17 @@
       return EmitLoadArrayLength(call_inst.getArgOperand(0));
     }
     case IntrinsicHelper::AllocArray: {
-      return ExpandToRuntime(runtime_support::AllocArray, call_inst);
+      return ExpandToRuntime(AllocArray, call_inst);
     }
     case IntrinsicHelper::AllocArrayWithAccessCheck: {
-      return ExpandToRuntime(runtime_support::AllocArrayWithAccessCheck,
+      return ExpandToRuntime(AllocArrayWithAccessCheck,
                              call_inst);
     }
     case IntrinsicHelper::CheckAndAllocArray: {
-      return ExpandToRuntime(runtime_support::CheckAndAllocArray, call_inst);
+      return ExpandToRuntime(CheckAndAllocArray, call_inst);
     }
     case IntrinsicHelper::CheckAndAllocArrayWithAccessCheck: {
-      return ExpandToRuntime(runtime_support::CheckAndAllocArrayWithAccessCheck,
+      return ExpandToRuntime(CheckAndAllocArrayWithAccessCheck,
                              call_inst);
     }
     case IntrinsicHelper::ArrayGet: {
@@ -3029,14 +3089,14 @@
       return NULL;
     }
     case IntrinsicHelper::CheckPutArrayElement: {
-      return ExpandToRuntime(runtime_support::CheckPutArrayElement, call_inst);
+      return ExpandToRuntime(CheckPutArrayElement, call_inst);
     }
     case IntrinsicHelper::FilledNewArray: {
       Expand_FilledNewArray(call_inst);
       return NULL;
     }
     case IntrinsicHelper::FillArrayData: {
-      return ExpandToRuntime(runtime_support::FillArrayData, call_inst);
+      return ExpandToRuntime(FillArrayData, call_inst);
     }
     case IntrinsicHelper::HLFillArrayData: {
       Expand_HLFillArrayData(call_inst);
@@ -3052,13 +3112,13 @@
     case IntrinsicHelper::InstanceFieldGetByte:
     case IntrinsicHelper::InstanceFieldGetChar:
     case IntrinsicHelper::InstanceFieldGetShort: {
-      return ExpandToRuntime(runtime_support::Get32Instance, call_inst);
+      return ExpandToRuntime(Get32Instance, call_inst);
     }
     case IntrinsicHelper::InstanceFieldGetWide: {
-      return ExpandToRuntime(runtime_support::Get64Instance, call_inst);
+      return ExpandToRuntime(Get64Instance, call_inst);
     }
     case IntrinsicHelper::InstanceFieldGetObject: {
-      return ExpandToRuntime(runtime_support::GetObjectInstance, call_inst);
+      return ExpandToRuntime(GetObjectInstance, call_inst);
     }
     case IntrinsicHelper::InstanceFieldGetFast: {
       return Expand_IGetFast(call_inst.getArgOperand(0),
@@ -3107,13 +3167,13 @@
     case IntrinsicHelper::InstanceFieldPutByte:
     case IntrinsicHelper::InstanceFieldPutChar:
     case IntrinsicHelper::InstanceFieldPutShort: {
-      return ExpandToRuntime(runtime_support::Set32Instance, call_inst);
+      return ExpandToRuntime(Set32Instance, call_inst);
     }
     case IntrinsicHelper::InstanceFieldPutWide: {
-      return ExpandToRuntime(runtime_support::Set64Instance, call_inst);
+      return ExpandToRuntime(Set64Instance, call_inst);
     }
     case IntrinsicHelper::InstanceFieldPutObject: {
-      return ExpandToRuntime(runtime_support::SetObjectInstance, call_inst);
+      return ExpandToRuntime(SetObjectInstance, call_inst);
     }
     case IntrinsicHelper::InstanceFieldPutFast: {
       Expand_IPutFast(call_inst.getArgOperand(0),
@@ -3178,13 +3238,13 @@
     case IntrinsicHelper::StaticFieldGetByte:
     case IntrinsicHelper::StaticFieldGetChar:
     case IntrinsicHelper::StaticFieldGetShort: {
-      return ExpandToRuntime(runtime_support::Get32Static, call_inst);
+      return ExpandToRuntime(Get32Static, call_inst);
     }
     case IntrinsicHelper::StaticFieldGetWide: {
-      return ExpandToRuntime(runtime_support::Get64Static, call_inst);
+      return ExpandToRuntime(Get64Static, call_inst);
     }
     case IntrinsicHelper::StaticFieldGetObject: {
-      return ExpandToRuntime(runtime_support::GetObjectStatic, call_inst);
+      return ExpandToRuntime(GetObjectStatic, call_inst);
     }
     case IntrinsicHelper::StaticFieldGetFast: {
       return Expand_SGetFast(call_inst.getArgOperand(0),
@@ -3233,13 +3293,13 @@
     case IntrinsicHelper::StaticFieldPutByte:
     case IntrinsicHelper::StaticFieldPutChar:
     case IntrinsicHelper::StaticFieldPutShort: {
-      return ExpandToRuntime(runtime_support::Set32Static, call_inst);
+      return ExpandToRuntime(Set32Static, call_inst);
     }
     case IntrinsicHelper::StaticFieldPutWide: {
-      return ExpandToRuntime(runtime_support::Set64Static, call_inst);
+      return ExpandToRuntime(Set64Static, call_inst);
     }
     case IntrinsicHelper::StaticFieldPutObject: {
-      return ExpandToRuntime(runtime_support::SetObjectStatic, call_inst);
+      return ExpandToRuntime(SetObjectStatic, call_inst);
     }
     case IntrinsicHelper::StaticFieldPutFast: {
       Expand_SPutFast(call_inst.getArgOperand(0),
@@ -3304,7 +3364,7 @@
       return Expand_LoadClassSSBFromDexCache(call_inst.getArgOperand(0));
     }
     case IntrinsicHelper::InitializeAndLoadClassSSB: {
-      return ExpandToRuntime(runtime_support::InitializeStaticStorage, call_inst);
+      return ExpandToRuntime(InitializeStaticStorage, call_inst);
     }
 
     //==- High-level Array -------------------------------------------------==//
@@ -3449,19 +3509,19 @@
 
     //==- Invoke -----------------------------------------------------------==//
     case IntrinsicHelper::FindStaticMethodWithAccessCheck: {
-      return ExpandToRuntime(runtime_support::FindStaticMethodWithAccessCheck, call_inst);
+      return ExpandToRuntime(FindStaticMethodWithAccessCheck, call_inst);
     }
     case IntrinsicHelper::FindDirectMethodWithAccessCheck: {
-      return ExpandToRuntime(runtime_support::FindDirectMethodWithAccessCheck, call_inst);
+      return ExpandToRuntime(FindDirectMethodWithAccessCheck, call_inst);
     }
     case IntrinsicHelper::FindVirtualMethodWithAccessCheck: {
-      return ExpandToRuntime(runtime_support::FindVirtualMethodWithAccessCheck, call_inst);
+      return ExpandToRuntime(FindVirtualMethodWithAccessCheck, call_inst);
     }
     case IntrinsicHelper::FindSuperMethodWithAccessCheck: {
-      return ExpandToRuntime(runtime_support::FindSuperMethodWithAccessCheck, call_inst);
+      return ExpandToRuntime(FindSuperMethodWithAccessCheck, call_inst);
     }
     case IntrinsicHelper::FindInterfaceMethodWithAccessCheck: {
-      return ExpandToRuntime(runtime_support::FindInterfaceMethodWithAccessCheck, call_inst);
+      return ExpandToRuntime(FindInterfaceMethodWithAccessCheck, call_inst);
     }
     case IntrinsicHelper::GetSDCalleeMethodObjAddrFast: {
       return Expand_GetSDCalleeMethodObjAddrFast(call_inst.getArgOperand(0));
@@ -3471,7 +3531,7 @@
                 call_inst.getArgOperand(0), call_inst.getArgOperand(1));
     }
     case IntrinsicHelper::GetInterfaceCalleeMethodObjAddrFast: {
-      return ExpandToRuntime(runtime_support::FindInterfaceMethod, call_inst);
+      return ExpandToRuntime(FindInterfaceMethod, call_inst);
     }
     case IntrinsicHelper::InvokeRetVoid:
     case IntrinsicHelper::InvokeRetBoolean:
@@ -3500,16 +3560,16 @@
       return Expand_DivRem(call_inst, /* is_div */false, kLong);
     }
     case IntrinsicHelper::D2L: {
-      return ExpandToRuntime(runtime_support::art_d2l, call_inst);
+      return ExpandToRuntime(art_d2l, call_inst);
     }
     case IntrinsicHelper::D2I: {
-      return ExpandToRuntime(runtime_support::art_d2i, call_inst);
+      return ExpandToRuntime(art_d2i, call_inst);
     }
     case IntrinsicHelper::F2L: {
-      return ExpandToRuntime(runtime_support::art_f2l, call_inst);
+      return ExpandToRuntime(art_f2l, call_inst);
     }
     case IntrinsicHelper::F2I: {
-      return ExpandToRuntime(runtime_support::art_f2i, call_inst);
+      return ExpandToRuntime(art_f2i, call_inst);
     }
 
     //==- High-level Static ------------------------------------------------==//
diff --git a/compiler/llvm/runtime_support_builder.cc b/compiler/llvm/runtime_support_builder.cc
index 976aa8f..19ccc36 100644
--- a/compiler/llvm/runtime_support_builder.cc
+++ b/compiler/llvm/runtime_support_builder.cc
@@ -27,14 +27,14 @@
 #include <llvm/IR/Module.h>
 #include <llvm/IR/Type.h>
 
-using namespace llvm;
+using ::llvm::BasicBlock;
+using ::llvm::CallInst;
+using ::llvm::Function;
+using ::llvm::Value;
 
 namespace art {
 namespace llvm {
 
-using namespace runtime_support;
-
-
 RuntimeSupportBuilder::RuntimeSupportBuilder(::llvm::LLVMContext& context,
                                              ::llvm::Module& module,
                                              IRBuilder& irb)
diff --git a/compiler/llvm/runtime_support_builder_arm.cc b/compiler/llvm/runtime_support_builder_arm.cc
index 57a9971..5a9d2b8 100644
--- a/compiler/llvm/runtime_support_builder_arm.cc
+++ b/compiler/llvm/runtime_support_builder_arm.cc
@@ -28,11 +28,17 @@
 
 #include <vector>
 
-using namespace llvm;
+using ::llvm::CallInst;
+using ::llvm::Function;
+using ::llvm::FunctionType;
+using ::llvm::InlineAsm;
+using ::llvm::IntegerType;
+using ::llvm::Type;
+using ::llvm::Value;
 
 namespace {
 
-char LDRSTRSuffixByType(art::llvm::IRBuilder& irb, ::llvm::Type* type) {
+char LDRSTRSuffixByType(art::llvm::IRBuilder& irb, Type* type) {
   int width = type->isPointerTy() ?
               irb.getSizeOfPtrEquivInt()*8 :
               ::llvm::cast<IntegerType>(type)->getBitWidth();
@@ -53,7 +59,7 @@
 
 /* Thread */
 
-::llvm::Value* RuntimeSupportBuilderARM::EmitGetCurrentThread() {
+Value* RuntimeSupportBuilderARM::EmitGetCurrentThread() {
   Function* ori_func = GetRuntimeSupportFunction(runtime_support::GetCurrentThread);
   InlineAsm* func = InlineAsm::get(ori_func->getFunctionType(), "mov $0, r9", "=r", false);
   CallInst* thread = irb_.CreateCall(func);
@@ -62,8 +68,8 @@
   return thread;
 }
 
-::llvm::Value* RuntimeSupportBuilderARM::EmitLoadFromThreadOffset(int64_t offset, ::llvm::Type* type,
-                                                                TBAASpecialType s_ty) {
+Value* RuntimeSupportBuilderARM::EmitLoadFromThreadOffset(int64_t offset, ::llvm::Type* type,
+                                                          TBAASpecialType s_ty) {
   FunctionType* func_ty = FunctionType::get(/*Result=*/type,
                                             /*isVarArg=*/false);
   std::string inline_asm(StringPrintf("ldr%c $0, [r9, #%d]",
@@ -76,7 +82,7 @@
   return result;
 }
 
-void RuntimeSupportBuilderARM::EmitStoreToThreadOffset(int64_t offset, ::llvm::Value* value,
+void RuntimeSupportBuilderARM::EmitStoreToThreadOffset(int64_t offset, Value* value,
                                                        TBAASpecialType s_ty) {
   FunctionType* func_ty = FunctionType::get(/*Result=*/Type::getVoidTy(context_),
                                             /*Params=*/value->getType(),
@@ -89,8 +95,7 @@
   irb_.SetTBAA(call_inst, s_ty);
 }
 
-::llvm::Value*
-RuntimeSupportBuilderARM::EmitSetCurrentThread(::llvm::Value* thread) {
+Value* RuntimeSupportBuilderARM::EmitSetCurrentThread(Value* thread) {
   // Separate to two InlineAsm: The first one produces the return value, while the second,
   // sets the current thread.
   // LLVM can delete the first one if the caller in LLVM IR doesn't use the return value.
@@ -114,7 +119,7 @@
 
 /* Monitor */
 
-void RuntimeSupportBuilderARM::EmitLockObject(::llvm::Value* object) {
+void RuntimeSupportBuilderARM::EmitLockObject(Value* object) {
   RuntimeSupportBuilder::EmitLockObject(object);
   FunctionType* func_ty = FunctionType::get(/*Result=*/Type::getVoidTy(context_),
                                             /*isVarArg=*/false);
@@ -122,7 +127,7 @@
   irb_.CreateCall(func);
 }
 
-void RuntimeSupportBuilderARM::EmitUnlockObject(::llvm::Value* object) {
+void RuntimeSupportBuilderARM::EmitUnlockObject(Value* object) {
   RuntimeSupportBuilder::EmitUnlockObject(object);
   FunctionType* func_ty = FunctionType::get(/*Result=*/Type::getVoidTy(context_),
                                             /*isVarArg=*/false);
diff --git a/compiler/llvm/runtime_support_builder_thumb2.cc b/compiler/llvm/runtime_support_builder_thumb2.cc
index 2b9170c..b8a5f05 100644
--- a/compiler/llvm/runtime_support_builder_thumb2.cc
+++ b/compiler/llvm/runtime_support_builder_thumb2.cc
@@ -31,13 +31,18 @@
 #include <inttypes.h>
 #include <vector>
 
-using namespace llvm;
+using ::llvm::BasicBlock;
+using ::llvm::Function;
+using ::llvm::FunctionType;
+using ::llvm::InlineAsm;
+using ::llvm::Type;
+using ::llvm::Value;
 
 namespace art {
 namespace llvm {
 
 
-void RuntimeSupportBuilderThumb2::EmitLockObject(::llvm::Value* object) {
+void RuntimeSupportBuilderThumb2::EmitLockObject(Value* object) {
   FunctionType* func_ty = FunctionType::get(/*Result=*/irb_.getInt32Ty(),
                                             /*Params=*/irb_.getJObjectTy(),
                                             /*isVarArg=*/false);
@@ -58,10 +63,10 @@
 
   InlineAsm* func = InlineAsm::get(func_ty, asms, "=&l,l,~l,~l", true);
 
-  ::llvm::Value* retry_slow_path = irb_.CreateCall(func, object);
+  Value* retry_slow_path = irb_.CreateCall(func, object);
   retry_slow_path = irb_.CreateICmpNE(retry_slow_path, irb_.getJInt(0));
 
-  ::llvm::Function* parent_func = irb_.GetInsertBlock()->getParent();
+  Function* parent_func = irb_.GetInsertBlock()->getParent();
   BasicBlock* basic_block_lock = BasicBlock::Create(context_, "lock", parent_func);
   BasicBlock* basic_block_cont = BasicBlock::Create(context_, "lock_cont", parent_func);
   irb_.CreateCondBr(retry_slow_path, basic_block_lock, basic_block_cont, kUnlikely);
diff --git a/compiler/llvm/runtime_support_builder_x86.cc b/compiler/llvm/runtime_support_builder_x86.cc
index eed0b63..c056e58 100644
--- a/compiler/llvm/runtime_support_builder_x86.cc
+++ b/compiler/llvm/runtime_support_builder_x86.cc
@@ -29,13 +29,19 @@
 
 #include <vector>
 
-using namespace llvm;
+using ::llvm::CallInst;
+using ::llvm::Function;
+using ::llvm::FunctionType;
+using ::llvm::InlineAsm;
+using ::llvm::Type;
+using ::llvm::UndefValue;
+using ::llvm::Value;
 
 namespace art {
 namespace llvm {
 
 
-::llvm::Value* RuntimeSupportBuilderX86::EmitGetCurrentThread() {
+Value* RuntimeSupportBuilderX86::EmitGetCurrentThread() {
   Function* ori_func = GetRuntimeSupportFunction(runtime_support::GetCurrentThread);
   std::string inline_asm(StringPrintf("mov %%fs:%d, $0", Thread::SelfOffset().Int32Value()));
   InlineAsm* func = InlineAsm::get(ori_func->getFunctionType(), inline_asm, "=r", false);
@@ -45,8 +51,8 @@
   return thread;
 }
 
-::llvm::Value* RuntimeSupportBuilderX86::EmitLoadFromThreadOffset(int64_t offset, ::llvm::Type* type,
-                                                                TBAASpecialType s_ty) {
+Value* RuntimeSupportBuilderX86::EmitLoadFromThreadOffset(int64_t offset, Type* type,
+                                                          TBAASpecialType s_ty) {
   FunctionType* func_ty = FunctionType::get(/*Result=*/type,
                                             /*isVarArg=*/false);
   std::string inline_asm(StringPrintf("mov %%fs:%d, $0", static_cast<int>(offset)));
@@ -57,7 +63,7 @@
   return result;
 }
 
-void RuntimeSupportBuilderX86::EmitStoreToThreadOffset(int64_t offset, ::llvm::Value* value,
+void RuntimeSupportBuilderX86::EmitStoreToThreadOffset(int64_t offset, Value* value,
                                                        TBAASpecialType s_ty) {
   FunctionType* func_ty = FunctionType::get(/*Result=*/Type::getVoidTy(context_),
                                             /*Params=*/value->getType(),
@@ -68,9 +74,9 @@
   irb_.SetTBAA(call_inst, s_ty);
 }
 
-::llvm::Value* RuntimeSupportBuilderX86::EmitSetCurrentThread(::llvm::Value*) {
+Value* RuntimeSupportBuilderX86::EmitSetCurrentThread(Value*) {
   /* Nothing to be done. */
-  return ::llvm::UndefValue::get(irb_.getJObjectTy());
+  return UndefValue::get(irb_.getJObjectTy());
 }