[Committed] New gcc.target/ia64/builtin-bswap-2.c test case

[Roger Sayle]

The following new test case checks that the new bswap optab widdening code
gets triggered during RTL expansion, so that __bswapsi2 is no longer
called on IA-64, and is implemented via a "mux1 @rev" and a shift.

Tested on ia64-unknown-linux-gnu.  Committed as revision 121892.


2007-02-13  Roger Sayle  <roger@eyesopen.com>

        * gcc.target/ia64/builtin-bswap-2.c: New test case.


Roger
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