Rename A64 port to ARM64 port

src/arm64/constants-arm64.h

Index: src/arm64/constants-arm64.h
diff --git a/src/a64/constants-a64.h b/src/arm64/constants-arm64.h
similarity index 99%
rename from src/a64/constants-a64.h
rename to src/arm64/constants-arm64.h
index dbe52a05d6bbb98adb97a4c0ea546c259394676a..8866e23cf1bdafbefc743d9ac2fdc9a62c136396 100644
--- a/src/a64/constants-a64.h
+++ b/src/arm64/constants-arm64.h
@@ -25,8 +25,8 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef V8_A64_CONSTANTS_A64_H_
-#define V8_A64_CONSTANTS_A64_H_
+#ifndef V8_ARM64_CONSTANTS_ARM64_H_
+#define V8_ARM64_CONSTANTS_ARM64_H_
 
 
 // Assert that this is an LP64 system.
@@ -308,7 +308,7 @@ inline Condition ReverseConditionForCmp(Condition cond) {
       return eq;
     default:
       // In practice this function is only used with a condition coming from
-      // TokenToCondition in lithium-codegen-a64.cc. Any other condition is
+      // TokenToCondition in lithium-codegen-arm64.cc. Any other condition is
       // invalid as it doesn't necessary make sense to reverse it (consider
       // 'mi' for instance).
       UNREACHABLE();
@@ -1268,4 +1268,4 @@ enum UnallocatedOp {
 
 } }  // namespace v8::internal
 
-#endif  // V8_A64_CONSTANTS_A64_H_
+#endif  // V8_ARM64_CONSTANTS_ARM64_H_