[arm64] Prevent the compiler to use fmadd/fmsub while compiling cctest.

test/cctest/cctest.gyp

Index: test/cctest/cctest.gyp
diff --git a/test/cctest/cctest.gyp b/test/cctest/cctest.gyp
index 2a6e38ac2b775af7c04444c650f6616b7a4ef9ed..94f84b667f16a241d5bf7373477eb9f1181539b6 100644
--- a/test/cctest/cctest.gyp
+++ b/test/cctest/cctest.gyp
@@ -295,7 +295,8 @@
             },
           },
         }],
-        ['v8_target_arch=="ppc" or v8_target_arch=="ppc64"', {
+        ['v8_target_arch=="ppc" or v8_target_arch=="ppc64" \
+          or v8_target_arch=="arm" or v8_target_arch=="arm64"', {
           # disable fmadd/fmsub so that expected results match generated code in
           # RunFloat64MulAndFloat64Add1 and friends.
           'cflags': ['-ffp-contract=off'],