provides a mechanism for optimizing compilers to select the different Register configuration.

src/x64/macro-assembler-x64.cc

Index: src/x64/macro-assembler-x64.cc
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index 4a6ed90c8be070f1783177729f0a4c721ebb43ac..2a8c74ecae6708e69a76f67b479145cbaa8dbbee 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -4042,7 +4042,8 @@ void MacroAssembler::EnterExitFrameEpilogue(int arg_stack_space,
                 arg_stack_space * kRegisterSize;
     subp(rsp, Immediate(space));
     int offset = -2 * kPointerSize;
-    const RegisterConfiguration* config = RegisterConfiguration::ArchDefault();
+    const RegisterConfiguration* config =
+        RegisterConfiguration::ArchDefault(RegisterConfiguration::CRANKSHAFT);
     for (int i = 0; i < config->num_allocatable_double_registers(); ++i) {
       DoubleRegister reg =
           DoubleRegister::from_code(config->GetAllocatableDoubleCode(i));
@@ -4088,7 +4089,8 @@ void MacroAssembler::LeaveExitFrame(bool save_doubles, bool pop_arguments) {
   // r15 : argv
   if (save_doubles) {
     int offset = -2 * kPointerSize;
-    const RegisterConfiguration* config = RegisterConfiguration::ArchDefault();
+    const RegisterConfiguration* config =
+        RegisterConfiguration::ArchDefault(RegisterConfiguration::CRANKSHAFT);
     for (int i = 0; i < config->num_allocatable_double_registers(); ++i) {
       DoubleRegister reg =
           DoubleRegister::from_code(config->GetAllocatableDoubleCode(i));