A64: Eliminate static initializers

src/a64/regexp-macro-assembler-a64.cc

Index: src/a64/regexp-macro-assembler-a64.cc
diff --git a/src/a64/regexp-macro-assembler-a64.cc b/src/a64/regexp-macro-assembler-a64.cc
index d6946a5721de0bf6b3ef0c3045fc78b93b873fda..00558c017b9cecf82b67706ce40a95abbf021930 100644
--- a/src/a64/regexp-macro-assembler-a64.cc
+++ b/src/a64/regexp-macro-assembler-a64.cc
@@ -1558,7 +1558,7 @@ void RegExpMacroAssemblerA64::Pop(Register target) {
 
 Register RegExpMacroAssemblerA64::GetCachedRegister(int register_index) {
   ASSERT(register_index < kNumCachedRegisters);
-  return Register(register_index / 2, kXRegSize);
+  return Register::Create(register_index / 2, kXRegSize);
 }