[Bug fortran/96030] AArch64: Add an option to control 64bits simdclone of math functions for fortran

2020-07-07 Thread bule1 at huawei dot com 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96030

--- Comment #3 from Bu Le  ---
(In reply to Jakub Jelinek from comment #1)
> The directive should be doing what
> #pragma omp declare simd
> does on the target and it is an ABI decision what exactly it does.

Hi,I am still confused about your comment. Would you mind explain more?

[Bug fortran/96030] AArch64: Add an option to control 64bits simdclone of math functions for fortran

2020-07-02 Thread bule1 at huawei dot com 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96030

--- Comment #2 from Bu Le  ---
(In reply to Jakub Jelinek from comment #1)
> The directive should be doing what
> #pragma omp declare simd
> does on the target and it is an ABI decision what exactly it does.

I tried this test case. But I haven't found a way to prevent V2SF 64 bits
simdclone (e.g. _ZGVnN2v_cosf )from being generated.

!GCC$ builtin (cosf) attributes simd (notinbranch)

subroutine test_cos(a_cos, b_cos, is_cos, ie_cos)
  integer, intent(in) :: is_cos, ie_cos
  REAL(4), dimension(is_cos:ie_cos), intent(inout) :: a_cos, b_cos
  do i = 1, 3
  b_cos(i) = cos(a_cos(i))
  enddo

end subroutine test_cos


Are you suggesting we already have a way to prevent the generation of
_ZGVnN2v_cosf with !GCC$ builtin derivative? Or We haven' solve the problem
yet, but the correct way to solve this problem is to implement more feature for
the !GCC$ builtin derivative?

[Bug fortran/96030] AArch64: Add an option to control 64bits simdclone of math functions for fortran

2020-07-02 Thread jakub at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96030

Jakub Jelinek  changed:

   What|Removed |Added

 CC||rsandifo at gcc dot gnu.org

--- Comment #1 from Jakub Jelinek  ---
The directive should be doing what
#pragma omp declare simd
does on the target and it is an ABI decision what exactly it does.