Reland r38116: Improve receiver class check in polymorphic inlining.

runtime/vm/assembler_x64_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/os.h"
 #include "vm/unit_test.h"
@@ skipping 2932 matching lines @@
   typedef int (*ConditionalMovesCompareCode)(int i, int j);
   int res = reinterpret_cast<ConditionalMovesCompareCode>(test->entry())(10, 5);
   EXPECT_EQ(1, res);  // Greater equal.
   res = reinterpret_cast<ConditionalMovesCompareCode>(test->entry())(5, 5);
   EXPECT_EQ(1, res);  // Greater equal.
   res = reinterpret_cast<ConditionalMovesCompareCode>(test->entry())(2, 5);
   EXPECT_EQ(-1, res);  // Less.
 }
 
 
+ASSEMBLER_TEST_GENERATE(BitTest, assembler) {
+  __ movq(RAX, Immediate(4));
+  __ movq(R12, Immediate(2));
+  __ btq(RAX, R12);
+  Label ok;
+  __ j(CARRY, &ok);
+  __ int3();
+  __ Bind(&ok);
+  __ movq(RAX, Immediate(1));
+  __ ret();
+}
+
+
+ASSEMBLER_TEST_RUN(BitTest, test) {
+  typedef int (*BitTest)();
+  EXPECT_EQ(1, reinterpret_cast<BitTest>(test->entry())());
+}
+
+
 // Return 1 if equal, 0 if not equal.
 ASSEMBLER_TEST_GENERATE(ConditionalMovesEqual, assembler) {
   __ movq(RDX, CallingConventions::kArg1Reg);
   __ xorq(RAX, RAX);
   __ movq(RCX, Immediate(1));
   __ cmpq(RDX, Immediate(785));
   __ cmoveq(RAX, RCX);
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(ConditionalMovesEqual, test) {
   typedef int (*ConditionalMovesEqualCode)(int i);
   int res = reinterpret_cast<ConditionalMovesEqualCode>(test->entry())(785);
   EXPECT_EQ(1, res);
   res = reinterpret_cast<ConditionalMovesEqualCode>(test->entry())(-12);
   EXPECT_EQ(0, res);
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64