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pr3214
2010 Jan 07
3
[LLVMdev] sqrt
What is the state of sqrt in LLVM?
It was an intrinsic but there are no OCaml bindings for it and, last I looked,
it generated inefficient code on Linux due to this bug:
http://www.llvm.org/PR3219
Is the intrinsic deprecated? Am I losing a lot of performance by calling sqrt
from libm instead of using the intrinsic?
--
Dr Jon Harrop, Flying Frog Consultancy Ltd.
http://www.ffconsultancy.com/?e
2010 Jan 07
0
[LLVMdev] sqrt
On Jan 7, 2010, at 7:06 AM, Jon Harrop wrote:
>
> What is the state of sqrt in LLVM?
>
> It was an intrinsic but there are no OCaml bindings for it and, last
> I looked,
> it generated inefficient code on Linux due to this bug:
>
> http://www.llvm.org/PR3219
>
> Is the intrinsic deprecated? Am I losing a lot of performance by
> calling sqrt
> from libm instead of using the intrinsic?
There is a fundamental difference between sqrt() and llvm.sqrt: the
former is defined on negative values and sets errno (on linux). The
later is undefi...