A64: Synchronize with r17807.

test/test262/test262.status

 # Copyright 2011 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 56 matching lines @@
   '12.3.3': [FAIL],
   '12.3_a': [FAIL],
   '15.5.4.9_3': [PASS, FAIL],
 
   ##################### DELIBERATE INCOMPATIBILITIES #####################
 
   # This tests precision of Math functions.  The implementation for those
   # trigonometric functions are platform/compiler dependent.  Furthermore, the
   # expectation values by far deviates from the actual result given by an
   # arbitrary-precision calculator, making those tests partly bogus.
+  'S15.8.2.7_A7': [PASS, FAIL_OK],  # Math.cos
   'S15.8.2.8_A6': [PASS, FAIL_OK],  # Math.exp (less precise with --fast-math)
   'S15.8.2.16_A7': [PASS, FAIL_OK],  # Math.sin
   'S15.8.2.18_A7': [PASS, FAIL_OK],  # Math.tan
 
   # Linux for ia32 (and therefore simulators) default to extended 80 bit floating
   # point formats, so these tests checking 64-bit FP precision fail. The other
   # platforms/arch's pass these tests.
   # We follow the other major JS engines by keeping this default.
   'S8.5_A2.1': [PASS, FAIL_OK],
   'S8.5_A2.2': [PASS, FAIL_OK],
@@ skipping 26 matching lines @@
 
   # BUG(3251225): Tests that timeout with --nocrankshaft.
   'S15.1.3.1_A2.4_T1': [SKIP],
   'S15.1.3.1_A2.5_T1': [SKIP],
   'S15.1.3.2_A2.4_T1': [SKIP],
   'S15.1.3.2_A2.5_T1': [SKIP],
   'S15.1.3.3_A2.3_T1': [SKIP],
   'S15.1.3.4_A2.3_T1': [SKIP],
 }],  # 'arch == arm or arch == mipsel or arch == a64'
 ]