Fix compilation on arm64.

src/compiler/arm64/code-generator-arm64.cc

Index: src/compiler/arm64/code-generator-arm64.cc
diff --git a/src/compiler/arm64/code-generator-arm64.cc b/src/compiler/arm64/code-generator-arm64.cc
index 3180f978aae3f23872656b09457740df582bcfe8..52e6b4606b4f70b38042d58ead8512e80f20faa0 100644
--- a/src/compiler/arm64/code-generator-arm64.cc
+++ b/src/compiler/arm64/code-generator-arm64.cc
@@ -15,8 +15,6 @@ namespace v8 {
 namespace internal {
 namespace compiler {
 
-#if V8_TURBOFAN_TARGET
-
 #define __ masm()->
 
 
@@ -852,8 +850,6 @@ bool CodeGenerator::IsNopForSmiCodeInlining(Handle<Code> code, int start_pc,
 
 #endif  // DEBUG
 
-#endif  // V8_TURBOFAN_TARGET
-
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8