Rename A64 port to ARM64 port

src/jsregexp.cc

Index: src/jsregexp.cc
diff --git a/src/jsregexp.cc b/src/jsregexp.cc
index d9057dbf56f30232c269b1a3d321d9f33eded595..012c251e21d3035d3a290eb88f635851888f06f2 100644
--- a/src/jsregexp.cc
+++ b/src/jsregexp.cc
@@ -49,8 +49,8 @@
 #include "ia32/regexp-macro-assembler-ia32.h"
 #elif V8_TARGET_ARCH_X64
 #include "x64/regexp-macro-assembler-x64.h"
-#elif V8_TARGET_ARCH_A64
-#include "a64/regexp-macro-assembler-a64.h"
+#elif V8_TARGET_ARCH_ARM64
+#include "arm64/regexp-macro-assembler-arm64.h"
 #elif V8_TARGET_ARCH_ARM
 #include "arm/regexp-macro-assembler-arm.h"
 #elif V8_TARGET_ARCH_MIPS
@@ -6090,9 +6090,9 @@ RegExpEngine::CompilationResult RegExpEngine::Compile(
 #elif V8_TARGET_ARCH_ARM
   RegExpMacroAssemblerARM macro_assembler(mode, (data->capture_count + 1) * 2,
                                           zone);
-#elif V8_TARGET_ARCH_A64
-  RegExpMacroAssemblerA64 macro_assembler(mode, (data->capture_count + 1) * 2,
-                                          zone);
+#elif V8_TARGET_ARCH_ARM64
+  RegExpMacroAssemblerARM64 macro_assembler(mode, (data->capture_count + 1) * 2,
+                                            zone);
 #elif V8_TARGET_ARCH_MIPS
   RegExpMacroAssemblerMIPS macro_assembler(mode, (data->capture_count + 1) * 2,
                                            zone);