PPC/s390: [async-iteration] implement AsyncGenerator

src/ppc/macro-assembler-ppc.cc

Index: src/ppc/macro-assembler-ppc.cc
diff --git a/src/ppc/macro-assembler-ppc.cc b/src/ppc/macro-assembler-ppc.cc
index 8b22a0770d072cc7f941ac60e48d5be64fe158b3..56e78762453b98da202b91048a7d76c7e5db90b1 100644
--- a/src/ppc/macro-assembler-ppc.cc
+++ b/src/ppc/macro-assembler-ppc.cc
@@ -2637,6 +2637,18 @@ void MacroAssembler::AssertGeneratorObject(Register object) {
   }
 }
 
+void MacroAssembler::AssertAsyncGeneratorObject(Register object) {
+  if (emit_debug_code()) {
+    STATIC_ASSERT(kSmiTag == 0);
+    TestIfSmi(object, r0);
+    Check(ne, kOperandIsASmiAndNotAGeneratorObject);
+    push(object);
+    CompareObjectType(object, object, object, JS_ASYNC_GENERATOR_OBJECT_TYPE);
+    pop(object);
+    Check(eq, kOperandIsNotAGeneratorObject);
+  }
+}
+
 void MacroAssembler::AssertUndefinedOrAllocationSite(Register object,
                                                      Register scratch) {
   if (emit_debug_code()) {