Fix issue 1968, replace usage of inline 'asm' constructs in 'stack alignment', 'jump to exception h…

vm/assembler_x64.h

Index: vm/assembler_x64.h
===================================================================
--- vm/assembler_x64.h	(revision 9040)
+++ vm/assembler_x64.h	(working copy)
@@ -18,28 +18,6 @@
 // Forward declarations.
 class RuntimeEntry;
 
-
-#if defined(TESTING) || defined(DEBUG)
-
-#if defined(TARGET_OS_WINDOWS)
-// The compiler may dynamically align the stack on Windows, so do not check.
-#define CHECK_STACK_ALIGNMENT { }
-#else
-#define CHECK_STACK_ALIGNMENT {                                                \
-  uword current_sp;                                                            \
-  asm volatile("mov %%rsp, %[current_sp]" : [current_sp] "=r" (current_sp));   \
-  ASSERT((OS::ActivationFrameAlignment() == 0) ||                              \
-         (Utils::IsAligned(current_sp, OS::ActivationFrameAlignment())));      \
-}
-#endif
-
-#else
-
-#define CHECK_STACK_ALIGNMENT { }
-
-#endif
-
-
 class Immediate : public ValueObject {
  public:
   explicit Immediate(int64_t value) : value_(value) { }