2009-06-17  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Mark Rowe.

        <rdar://problem/6947426> sunspider math-cordic.js exhibits different intermediate results running 32-bit vs. 64-bit

        On 64-bit, NaN-encoded values must be detagged before they can be used in rshift.

        No performance impact.

        * jit/JITArithmetic.cpp:
        (JSC::JIT::emit_op_rshift):

LayoutTests:

2009-06-17  Gavin Barraclough  <barraclough@apple.com>

        Reviewed by Mark Rowe.

        Add tests to check shifts by non-constant amounts.

        * fast/js/kde/operators-expected.txt:
        * fast/js/kde/resources/operators.js:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@44795 268f45cc-cd09-0410-ab3c-d52691b4dbfc