[LLVMdev] Performance regression on ARM (original) (raw)

C Bergström cbergstrom at pathscale.com
Sat Oct 18 16:58:53 PDT 2014

On Sun, Oct 19, 2014 at 6:45 AM, Joerg Sonnenberger <joerg at britannica.bec.de

wrote:

On Sun, Oct 19, 2014 at 06:31:24AM +0700, C Bergström wrote: > I apologize that I haven't been able to follow this thread entirely, but if > someone gives me a Fortran testcase I can check what Fortran+llvm would do > currently and maybe give more feedback.

Short version: if you multiple or divide a complex number by a real number, is it valid to just do the trivial component wise computation? What about multiplying with / dividing by a pure imaginary number?

I'll try to get a solid answer, but for clarity.. Fortran has types REAL and CMPLX. I'm not sure if you mean INT or REAL when you say "real" number.. https://gcc.gnu.org/onlinedocs/gfortran/CMPLX.html https://gcc.gnu.org/onlinedocs/gfortran/REAL.html -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20141019/5245a4f3/attachment.html>

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