Rename A64 port to ARM64 port

src/arm64/utils-arm64.cc

Index: src/arm64/utils-arm64.cc
diff --git a/src/a64/utils-a64.cc b/src/arm64/utils-arm64.cc
similarity index 93%
rename from src/a64/utils-a64.cc
rename to src/arm64/utils-arm64.cc
index 7e710d770e7a32e77f65da41942ab7a7c2ce4f75..e2589f42e8476b8a593332ab739bba4757b81b3c 100644
--- a/src/a64/utils-a64.cc
+++ b/src/arm64/utils-arm64.cc
@@ -25,9 +25,9 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#if V8_TARGET_ARCH_A64
+#if V8_TARGET_ARCH_ARM64
 
-#include "a64/utils-a64.h"
+#include "arm64/utils-arm64.h"
 
 
 namespace v8 {
@@ -37,7 +37,7 @@ namespace internal {
 
 
 int CountLeadingZeros(uint64_t value, int width) {
-  // TODO(jbramley): Optimize this for A64 hosts.
+  // TODO(jbramley): Optimize this for ARM64 hosts.
   ASSERT((width == 32) || (width == 64));
   int count = 0;
   uint64_t bit_test = 1UL << (width - 1);
@@ -50,7 +50,7 @@ int CountLeadingZeros(uint64_t value, int width) {
 
 
 int CountLeadingSignBits(int64_t value, int width) {
-  // TODO(jbramley): Optimize this for A64 hosts.
+  // TODO(jbramley): Optimize this for ARM64 hosts.
   ASSERT((width == 32) || (width == 64));
   if (value >= 0) {
     return CountLeadingZeros(value, width) - 1;
@@ -61,7 +61,7 @@ int CountLeadingSignBits(int64_t value, int width) {
 
 
 int CountTrailingZeros(uint64_t value, int width) {
-  // TODO(jbramley): Optimize this for A64 hosts.
+  // TODO(jbramley): Optimize this for ARM64 hosts.
   ASSERT((width == 32) || (width == 64));
   int count = 0;
   while ((count < width) && (((value >> count) & 1) == 0)) {
@@ -109,4 +109,4 @@ int MaskToBit(uint64_t mask) {
 
 } }  // namespace v8::internal
 
-#endif  // V8_TARGET_ARCH_A64
+#endif  // V8_TARGET_ARCH_ARM64