PPC/S390: Fix to use correct instr to test bitmask

src/ppc/macro-assembler-ppc.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <assert.h>  // For assert
 #include <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/base/bits.h"
@@ skipping 2619 matching lines @@
   if (!emit_debug_code()) return;
   TestIfSmi(object, r0);
   Check(ne, kOperandIsASmiAndNotAGeneratorObject);
 
   // Load map
   Register map = object;
   push(object);
   LoadP(map, FieldMemOperand(object, HeapObject::kMapOffset));
 
   Label async, do_check;
-  And(ip, flags, Operand(static_cast<int>(SuspendFlags::kGeneratorTypeMask)));
-  cmpi(ip, Operand(static_cast<int>(SuspendFlags::kGeneratorTypeMask)));
+  TestBitMask(flags, static_cast<int>(SuspendFlags::kGeneratorTypeMask), r0);
   bne(&async);
 
   // Check if JSGeneratorObject
   CompareInstanceType(map, object, JS_GENERATOR_OBJECT_TYPE);
   b(&do_check);
 
   bind(&async);
   // Check if JSAsyncGeneratorObject
   CompareInstanceType(map, object, JS_ASYNC_GENERATOR_OBJECT_TYPE);
 
@@ skipping 1605 matching lines @@
   }
   if (mag.shift > 0) srawi(result, result, mag.shift);
   ExtractBit(r0, dividend, 31);
   add(result, result, r0);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC