[generators] Decouple generator resume from fullcodegen.

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 566091df4e2d48c65dc4c91b0e67f118f7ac7afc..5de65989fec5197f6e52b275695f6faf65a2bf70 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -3970,6 +3970,16 @@ void MacroAssembler::AssertBoundFunction(Register object) {
   }
 }
 
+void MacroAssembler::AssertGeneratorObject(Register object) {
+  if (emit_debug_code()) {
+    testb(object, Immediate(kSmiTagMask));
+    Check(not_equal, kOperandIsASmiAndNotAGeneratorObject);
+    Push(object);
+    CmpObjectType(object, JS_GENERATOR_OBJECT_TYPE, object);
+    Pop(object);
+    Check(equal, kOperandIsNotAGeneratorObject);
+  }
+}
 
 void MacroAssembler::AssertReceiver(Register object) {
   if (emit_debug_code()) {