Index: llvm-toolchain-3.8-3.8.1/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp
--- llvm-toolchain-3.8-3.8.1.orig/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp	2016/01/11 10:39:09	257322
+++ llvm-toolchain-3.8-3.8.1/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp	2016/04/12 05:40:51	266042
@@ -32,6 +32,8 @@
 #include <sys/socket.h>
 // NT_PRSTATUS and NT_FPREGSET definition
 #include <elf.h>
+// user_hwdebug_state definition
+#include <asm/ptrace.h>
 
 #define REG_CONTEXT_SIZE (GetGPRSize() + GetFPRSize())