looks good to me
Sun
On Thu, May 31, 2012 at 8:05 PM, Rao, Shivarama <shivarama....@amd.com>wrote:
> Hi,****
>
> ** **
>
> Could a gatekeeper please review the following changes, which would fix
> cmake build under Open64?****
>
> ** **
>
> The hyperblock scheduler makes the following transformation, which is
> incorrect in 64 bit mode.****
>
> ****
>
> From:****
>
> addl $1,%edx ****
>
> movsbl 0(%rdx,%r9,1), %eax ****
>
> ** **
>
> To:****
>
> movsbl 1(%rdx,%r9,1), %eax ****
>
> addl $1,%edx ****
>
> ** **
>
> In the test environment $edx value is initially -1 and the address
> computed for movsbl would have been 0+0+r9*1. With the above optimization,
> the address computed is 1+0xffff+$r9*1 which is incorrect. The fix
> disallows the above transformation in 64 bit mode when add is a 32 bit
> instruction.****
>
> ** **
>
> Regards,****
>
> Shivaram****
>
> ** **
>
> ** **
>
>
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