Displaying 1 result from an estimated 1 matches for "8980ad40".
2015 Apr 24
3
[LLVMdev] Loss of precision with very large branch weights
yes -- for count representation, 64 bit is needed. The branch weight
here is different and does not needs to be 64bit to represent branch
probability precisely.
David
On Fri, Apr 24, 2015 at 12:21 PM, Smith, Kevin B
<kevin.b.smith at intel.com> wrote:
> FWIW. Intel compiler's profile instrumentation uses 64 bit integer counters.
> We wrestled with similar problems for a long