Zero gflops with evalpoly

[schneiderfelipe]

Hi, I get the following with an example from the README.md:

julia> x = 0.5; coeffs = rand(10);

julia> cnt = @count_ops evalpoly($x, $coeffs)
Flop Counter: 0 flop

julia> @gflops evalpoly($x, $coeffs);
  0.00 GFlops,  0.00% peak  (0.00e+00 flop, 1.88e-08 s, 0 alloc: 0 bytes)

I thought the implementation of evalpoly might have changed (to maybe C), but that's not the case:

julia> @edit evalpoly(x, coeffs)

leads me to the following implementation:

evalpoly(x, p::AbstractVector) = _evalpoly(x, p)

function _evalpoly(x, p)
    N = length(p)
    ex = p[end]
    for i in N-1:-1:1
        ex = muladd(x, ex, p[i])
    end
    ex
end

Is this expected? Some version info follows:

julia> versioninfo()
Julia Version 1.4.1
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: Intel(R) Core(TM) i7-5500U CPU @ 2.40GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-8.0.1 (ORCJIT, broadwell)
Environment:
  JULIA_NUM_THREADS = 4

[chriselrod]

It requires the master branch of GFlops.

julia> using GFlops

julia> x = 0.5; coeffs = rand(10);

julia> evalpoly(x, coeffs)
1.0651611619095267

julia> @count_ops evalpoly($x, $coeffs)
Flop Counter: 18 flop
┌────────┬─────────┐
│        │ Float64 │
├────────┼─────────┤
│ muladd │       9 │
└────────┴─────────┘

(@v1.7) pkg> st GFlops
      Status `~/.julia/environments/v1.7/Project.toml`
  [2ea8233c] GFlops v0.1.3 `https://github.com/triscale-innov/GFlops.jl.git#master`

[ffevotte]

Version 0.1.4 has now been released and should be available from the General Registry with this feature.