Rename A64 port to ARM64 port

src/arm64/assembler-arm64.cc

Index: src/arm64/assembler-arm64.cc
diff --git a/src/a64/assembler-a64.cc b/src/arm64/assembler-arm64.cc
similarity index 99%
rename from src/a64/assembler-a64.cc
rename to src/arm64/assembler-arm64.cc
index 042b544af162b9f1510ea2dec05d76fa74f8b133..8bee92ccc273a87b1e319481ef0697063c7f4075 100644
--- a/src/a64/assembler-a64.cc
+++ b/src/arm64/assembler-arm64.cc
@@ -28,11 +28,11 @@
 
 #include "v8.h"
 
-#if V8_TARGET_ARCH_A64
+#if V8_TARGET_ARCH_ARM64
 
-#define A64_DEFINE_REG_STATICS
+#define ARM64_DEFINE_REG_STATICS
 
-#include "a64/assembler-a64-inl.h"
+#include "arm64/assembler-arm64-inl.h"
 
 namespace v8 {
 namespace internal {
@@ -155,7 +155,7 @@ const int RelocInfo::kApplyMask = 0;
 
 bool RelocInfo::IsCodedSpecially() {
   // The deserializer needs to know whether a pointer is specially coded. Being
-  // specially coded on A64 means that it is a movz/movk sequence. We don't
+  // specially coded on ARM64 means that it is a movz/movk sequence. We don't
   // generate those for relocatable pointers.
   return false;
 }
@@ -1944,7 +1944,7 @@ void Assembler::debug(const char* message, uint32_t code, Instr params) {
     Label start;
     bind(&start);
 
-    // Refer to instructions-a64.h for a description of the marker and its
+    // Refer to instructions-arm64.h for a description of the marker and its
     // arguments.
     hlt(kImmExceptionIsDebug);
     ASSERT(SizeOfCodeGeneratedSince(&start) == kDebugCodeOffset);
@@ -2594,7 +2594,7 @@ void Assembler::CheckConstPool(bool force_emit, bool require_jump) {
     //  1) Encode the size of the constant pool, for use by the disassembler.
     //  2) Terminate the program, to try to prevent execution from accidentally
     //     flowing into the constant pool.
-    // The header is therefore made of two a64 instructions:
+    // The header is therefore made of two arm64 instructions:
     //   ldr xzr, #<size of the constant pool in 32-bit words>
     //   blr xzr
     // If executed the code will likely segfault and lr will point to the
@@ -2810,4 +2810,4 @@ void Assembler::PopulateConstantPool(ConstantPoolArray* constant_pool) {
 
 } }  // namespace v8::internal
 
-#endif  // V8_TARGET_ARCH_A64
+#endif  // V8_TARGET_ARCH_ARM64