SetLocal for a FlushedArguments should not claim that the dataFormat is DataFormatJS

[Filip Pizlo]

Patch forthcoming.  Reduced test case:

function foo(o) {
    var a = arguments;
    var result = o.f;
    for (var i = 1; i < a.length; ++i)
        result += a[i];
    return result;
}

noInline(foo);

for (var i = 0; i < 100; ++i)
    print(foo({f:42}, 1, 2, 3));

print(foo({g:40, f:41}, 1, 2.5, 3));

<rdar://problem/15757534>

[Filip Pizlo]

Created attachment 220493 [details]
the patch

[Ryosuke Niwa]

<rdar://problem/15757534>

[WebKit Commit Bot]

Comment on attachment 220493 [details]
the patch

Clearing flags on attachment: 220493

Committed r161411: <http://trac.webkit.org/changeset/161411>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.