Dale Johannesen 28929589e7 Add an SSE2 algorithm for uint64->f64 conversion. ...

The same one Apple gcc uses, faster.  Also gets the
extreme case in gcc.c-torture/execute/ieee/rbug.c
correct which we weren't before; this is not
sufficient to get the test to pass though, there
is another bug.

llvm-svn: 57926

2008-10-21 20:50:01 +00:00

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