[LLVMdev] ctlz pattern

[Craig Topper]

Are you looking for something other than calling __builtin_clz from c++ or
calling @llvm.ctlz.* instrinsic from IR?

I don't think we have anything that will auto converting a loop to ctlz or
anything like that. We only seem to have a detection for popcount loops.


On Thu, Aug 15, 2013 at 9:01 PM, reed kotler <rkotler at mips.com> wrote:

> Does anyone know some simple c/c++ code or .ll code which will cause this
> ctlz pattern to be emitted?
>
> Tia.
>
> Reed
>
>
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-- 
~Craig
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