http://d.puremagic.com/issues/show_bug.cgi?id=7423


Don <clugd...@yahoo.com.au> changed:

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                 CC|                            |clugd...@yahoo.com.au


--- Comment #6 from Don <clugd...@yahoo.com.au> 2012-03-19 23:02:40 PDT ---
The only way I can see that there could be a bug, and yet be fixed by the
cast(uint), is this line:

(x & 0xCCCC_CCCC)>>2

This might fail if there's a 64 bit codegen issue, eg if it does a 64bit load
of the constant, and then a 64 bit unsigned shift instead of a 32bit unsigned
shift for this combination.

If that were true, then the results would only be wrong if the upper bits of
the register were originally non-zero.

In all other cases, I can't see how the cast(uint) can be doing anything.

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