[aarch64-port-dev ] population count intrinsic performance

Andrew Haley aph at redhat.com
Thu Jun 11 16:24:16 UTC 2015


On 06/11/2015 05:20 PM, Edward Nevill wrote:
> Now, what I am not clear on, is whether if you just use iRegI here
> rather than iRregIorL2I you are guaranteed that the top 32 bits are 0.

If you can't use movw then src should be an iRegI.

Also, this:

__ mov($tmp$$FloatRegister, __ T1D, 0, as_Register($src$$reg));

could be

__ mov($tmp$$FloatRegister, __ T1D, 0, $src$$Register);

Andrew.



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