Fix OpenACC gang-redundant execution in 'libgomp.oacc-fortran/privatized-ref-2.f90'

This was a latent problem, and this commit here now resolves a regression that
after recent commit a78b1ab1df
"amdgcn: Tune default OpenMP/OpenACC GPU utilization" we had (only) seen on a
GCN offloading '-march=gfx908' system:

    {+WARNING: program timed out.+}
    [-PASS:-]{+FAIL:+} libgomp.oacc-fortran/privatized-ref-2.f90 -DACC_DEVICE_TYPE_radeon=1 -DACC_MEM_SHARED=0 -foffload=amdgcn-amdhsa  -O0  execution test

Same for other optimization levels.

Make sure that we're not executing non-parallelized code in gang-redundant
mode, by putting these parts into their own 'parallel' constructs, which then
default to 'num_gangs(1)'.

	libgomp/
	* testsuite/libgomp.oacc-fortran/privatized-ref-2.f90: Fix OpenACC
	gang-redundant execution.
This commit is contained in:
Thomas Schwinge 2022-01-21 14:58:23 +01:00
parent 537c965880
commit f8187b5c0d
1 changed files with 32 additions and 10 deletions

View File

@ -53,12 +53,10 @@ contains
integer :: array(nn)
!$acc parallel copyout(array) ! { dg-line l_compute[incr c_compute] }
! { dg-note {variable 'atmp\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'shadow_loopvar\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'offset\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'S\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'test\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
array = [(-i, i = 1, nn)]
!$acc end parallel
!$acc parallel copy(array)
!$acc loop gang private(array) ! { dg-line l_loop[incr c_loop] }
! { dg-note {variable 'i' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_loop$c_loop }
! { dg-note {variable 'array' in 'private' clause potentially has improper OpenACC privatization level: 'parm_decl'} "" { target *-*-* } l_loop$c_loop }
@ -66,6 +64,13 @@ contains
do i = 1, 10
array(i) = i
end do
!$acc end parallel
!$acc parallel copyin(array) ! { dg-line l_compute[incr c_compute] }
! { dg-note {variable 'test\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'atmp\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'shadow_loopvar\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'offset\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'S\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
if (any (array /= [(-i, i = 1, nn)])) error stop 1
!$acc end parallel
end subroutine foo
@ -74,14 +79,10 @@ contains
integer :: array(:)
!$acc parallel copyout(array) ! { dg-line l_compute[incr c_compute] }
! { dg-note {variable 'atmp\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'shadow_loopvar\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'offset\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'S\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'test\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'parm\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'A\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: static} "" { target *-*-* } l_compute$c_compute }
array = [(-2*i, i = 1, size(array))]
!$acc end parallel
!$acc parallel copy(array)
!$acc loop gang private(array) ! { dg-line l_loop[incr c_loop] }
! { dg-note {variable 'i' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_loop$c_loop }
! { dg-note {variable 'array\.[0-9]+' in 'private' clause is candidate for adjusting OpenACC privatization level} "" { target *-*-* } l_loop$c_loop }
@ -91,6 +92,11 @@ contains
do i = 1, 10
array(i) = 9*i
end do
!$acc end parallel
!$acc parallel copyin(array) ! { dg-line l_compute[incr c_compute] }
! { dg-note {variable 'test\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'A\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: static} "" { target *-*-* } l_compute$c_compute }
! { dg-note {variable 'S\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_compute$c_compute }
if (any (array /= [(-2*i, i = 1, 10)])) error stop 2
!$acc end parallel
end subroutine bar
@ -100,6 +106,8 @@ contains
!$acc parallel copyout(str)
str = "abcdefghij"
!$acc end parallel
!$acc parallel copy(str)
!$acc loop gang private(str) ! { dg-line l_loop[incr c_loop] }
! { dg-note {variable 'i' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_loop$c_loop }
! { dg-note {variable 'str' in 'private' clause potentially has improper OpenACC privatization level: 'parm_decl'} "" { target *-*-* } l_loop$c_loop }
@ -110,6 +118,8 @@ contains
do i = 1, 10
str(i:i) = achar(ichar('A') + i)
end do
!$acc end parallel
!$acc parallel copyin(str)
if (str /= "abcdefghij") error stop 3
!$acc end parallel
end
@ -122,10 +132,14 @@ contains
! ***************************************
!!$acc parallel copyout(str)
str = "abcdefghij"
!!$acc end parallel
!!$acc parallel copy(str)
!!$acc loop gang private(str)
!do i = 1, 10
! str(i:i) = achar(ichar('A') + i)
!end do
!!$acc end parallel
!!$acc parallel copyin(str)
if (str /= "abcdefghij") error stop 5
!!$acc end parallel
end
@ -135,6 +149,8 @@ contains
!$acc parallel copyout(scalar)
scalar = "abcdefghi-12345"
!$acc end parallel
!$acc parallel copy(scalar)
!$acc loop gang private(scalar) ! { dg-line l_loop[incr c_loop] }
! { dg-note {variable 'i' in 'private' clause isn't candidate for adjusting OpenACC privatization level: not addressable} "" { target *-*-* } l_loop$c_loop }
! { dg-note {variable 'scalar' in 'private' clause potentially has improper OpenACC privatization level: 'parm_decl'} "" { target *-*-* } l_loop$c_loop }
@ -145,7 +161,9 @@ contains
scalar(i:i) = achar(ichar('A') + i)
end do
!$acc end parallel
!$acc parallel copyin(scalar)
if (scalar /= "abcdefghi-12345") error stop 6
!$acc end parallel
end subroutine foobar
subroutine foobar15 (scalar)
integer :: i
@ -153,11 +171,15 @@ contains
!$acc parallel copyout(scalar)
scalar = "abcdefghi-12345"
!$acc end parallel
!$acc parallel copy(scalar)
!$acc loop gang private(scalar)
do i = 1, 15
scalar(i:i) = achar(ichar('A') + i)
end do
!$acc end parallel
!$acc parallel copyin(scalar)
if (scalar /= "abcdefghi-12345") error stop 1
!$acc end parallel
end subroutine foobar15
end