MIPS64: Add big-endian support for mips64.

test/mjsunit/mjsunit.status

Index: test/mjsunit/mjsunit.status
diff --git a/test/mjsunit/mjsunit.status b/test/mjsunit/mjsunit.status
index 7be85df372eca8bb4e9844fafc7a805a47f5be70..b59cfe8d17674fb6e88f3d7a8f23a85c4ad3f54c 100644
--- a/test/mjsunit/mjsunit.status
+++ b/test/mjsunit/mjsunit.status
@@ -187,8 +187,8 @@
   'array-constructor': [PASS, TIMEOUT],
 
   # Very slow on ARM and MIPS, contains no architecture dependent code.
-  'unicode-case-overoptimization': [PASS, NO_VARIANTS, ['arch == arm or arch == arm64 or arch == android_arm or arch == android_arm64 or arch == mipsel or arch == mips64el or arch == mips', TIMEOUT]],
-  'regress/regress-3976': [PASS, NO_VARIANTS, ['arch == arm or arch == arm64 or arch == android_arm or arch == android_arm64 or arch == mipsel or arch == mips64el or arch == mips', SKIP]],
+  'unicode-case-overoptimization': [PASS, NO_VARIANTS, ['arch == arm or arch == arm64 or arch == android_arm or arch == android_arm64 or arch == mipsel or arch == mips64el or arch == mips64 or arch == mips', TIMEOUT]],
+  'regress/regress-3976': [PASS, NO_VARIANTS, ['arch == arm or arch == arm64 or arch == android_arm or arch == android_arm64 or arch == mipsel or arch == mips64el or arch == mips64 or arch == mips', SKIP]],
   'regress/regress-crbug-482998': [PASS, NO_VARIANTS, ['arch == arm or arch == arm64 or arch == android_arm or arch == android_arm64 or arch == mipsel or arch == mips64el or arch == mips', SKIP]],
 
   ##############################################################################
@@ -545,7 +545,7 @@
 }],  # 'arch == mips'
 
 ##############################################################################
-['arch == mips64el', {
+['arch == mips64el or arch == mips64', {
 
   # Slow tests which times out in debug mode.
   'try': [PASS, ['mode == debug', SKIP]],
@@ -593,7 +593,7 @@
 
   # Currently always deopt on minus zero
   'math-floor-of-div-minus-zero': [SKIP],
-}],  # 'arch == mips64el'
+}],  # 'arch == mips64el or arch == mips64'
 
 ##############################################################################
 ['system == windows', {