S390: [generators] Store the resume mode in the generator object.

src/full-codegen/s390/full-codegen-s390.cc

Index: src/full-codegen/s390/full-codegen-s390.cc
diff --git a/src/full-codegen/s390/full-codegen-s390.cc b/src/full-codegen/s390/full-codegen-s390.cc
index 8e92d89d2aae61ef0b584be3344f805ba1546cdd..5662f1c7ab717e1a1e4637fc4a65f1c327fa7e88 100644
--- a/src/full-codegen/s390/full-codegen-s390.cc
+++ b/src/full-codegen/s390/full-codegen-s390.cc
@@ -1758,11 +1758,10 @@ void FullCodeGenerator::VisitYield(Yield* expr) {
 
   __ b(&suspend);
   __ bind(&continuation);
-  // When we arrive here, the stack top is the resume mode and
-  // result_register() holds the input value (the argument given to the
-  // respective resume operation).
+  // When we arrive here, r2 holds the generator object.
   __ RecordGeneratorContinuation();
-  __ pop(r3);
+  __ LoadP(r3, FieldMemOperand(r2, JSGeneratorObject::kResumeModeOffset));
+  __ LoadP(r2, FieldMemOperand(r2, JSGeneratorObject::kInputOffset));
   STATIC_ASSERT(JSGeneratorObject::kNext < JSGeneratorObject::kReturn);
   STATIC_ASSERT(JSGeneratorObject::kThrow > JSGeneratorObject::kReturn);
   __ CmpSmiLiteral(r3, Smi::FromInt(JSGeneratorObject::kReturn), r0);