Rename A64 port to ARM64 port

src/arm64/instructions-arm64.cc

Index: src/arm64/instructions-arm64.cc
diff --git a/src/a64/instructions-a64.cc b/src/arm64/instructions-arm64.cc
similarity index 97%
rename from src/a64/instructions-a64.cc
rename to src/arm64/instructions-arm64.cc
index 17f4f2fb199ff1a382392966b21e12ce0809828b..4d1428a1507bbd7b6049e45ec2240ac3ec8e7afe 100644
--- a/src/a64/instructions-a64.cc
+++ b/src/arm64/instructions-arm64.cc
@@ -27,12 +27,12 @@
 
 #include "v8.h"
 
-#if V8_TARGET_ARCH_A64
+#if V8_TARGET_ARCH_ARM64
 
-#define A64_DEFINE_FP_STATICS
+#define ARM64_DEFINE_FP_STATICS
 
-#include "a64/instructions-a64.h"
-#include "a64/assembler-a64-inl.h"
+#include "arm64/instructions-arm64.h"
+#include "arm64/assembler-arm64-inl.h"
 
 namespace v8 {
 namespace internal {
@@ -306,7 +306,7 @@ void Instruction::SetImmLLiteral(Instruction* source) {
 
 // TODO(jbramley): We can't put this inline in the class because things like
 // xzr and Register are not defined in that header. Consider adding
-// instructions-a64-inl.h to work around this.
+// instructions-arm64-inl.h to work around this.
 bool InstructionSequence::IsInlineData() const {
   // Inline data is encoded as a single movz instruction which writes to xzr
   // (x31).
@@ -318,7 +318,7 @@ bool InstructionSequence::IsInlineData() const {
 
 // TODO(jbramley): We can't put this inline in the class because things like
 // xzr and Register are not defined in that header. Consider adding
-// instructions-a64-inl.h to work around this.
+// instructions-arm64-inl.h to work around this.
 uint64_t InstructionSequence::InlineData() const {
   ASSERT(IsInlineData());
   uint64_t payload = ImmMoveWide();
@@ -330,4 +330,4 @@ uint64_t InstructionSequence::InlineData() const {
 
 } }  // namespace v8::internal
 
-#endif  // V8_TARGET_ARCH_A64
+#endif  // V8_TARGET_ARCH_ARM64