[llvm-dev] [test-suite] making polybench/symm succeed with "-Ofast" and "-ffp-contract=on"

[Renato Golin via llvm-dev]

On 12 October 2016 at 15:19, Sebastian Pop <sebpop.llvm at gmail.com> wrote:
> polybench/linear-algebra/kernels/symm, FP_ABSTOLERANCE=1e1
> polybench/linear-algebra/solvers/gramschmidt, FP_ABSTOLERANCE=1e0
> polybench/medley/reg_detect, FP_ABSTOLERANCE=1e4
> polybench/stencils/adi, FP_ABSTOLERANCE=1e4

Understanding it would be interesting to see what's at play. 1e4 may
be very large if the individual results are small, but acceptable if
they're all big anyway.

We don't want to have a large tolerance just because the reduced value
is large, so sampling may be a better strategy (it normally is).

cheers,
--renato