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jeremybenn |
! { dg-do compile }
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! { dg-options "-Warray-temporaries -O -fdump-tree-original" }
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!
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! PR fortran/43829
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! Scalarization of reductions.
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! Test that sum is properly inlined.
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! This is the compile time test only; for the runtime test see inline_sum_2.f90
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! We can't test for temporaries on the run time test directly, as it tries
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! several optimization options among which -Os, and sum inlining is disabled
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! at -Os.
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implicit none
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integer :: i, j, k
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integer, parameter :: q = 2
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integer, parameter :: nx=3, ny=2*q, nz=5
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integer, parameter, dimension(nx,ny,nz) :: p = &
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& reshape ((/ (i**2, i=1,size(p)) /), shape(p))
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integer, parameter, dimension( ny,nz) :: px = &
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& reshape ((/ (( &
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& nx*( nx*j+nx*ny*k+1)*( nx*j+nx*ny*k+1+ (nx-1)) &
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& + nx*(nx-1)*(2*nx-1)/6, &
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& j=0,ny-1), k=0,nz-1) /), shape(px))
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integer, parameter, dimension(nx, nz) :: py = &
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& reshape ((/ (( &
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& ny*(i +nx*ny*k+1)*(i +nx*ny*k+1+nx *(ny-1)) &
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& +(nx )**2*ny*(ny-1)*(2*ny-1)/6, &
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& i=0,nx-1), k=0,nz-1) /), shape(py))
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integer, parameter, dimension(nx,ny ) :: pz = &
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& reshape ((/ (( &
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& nz*(i+nx*j +1)*(i+nx*j +1+nx*ny*(nz-1)) &
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& +(nx*ny)**2*nz*(nz-1)*(2*nz-1)/6, &
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& i=0,nx-1), j=0,ny-1) /), shape(pz))
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integer, dimension(nx,ny,nz) :: a
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integer, dimension( ny,nz) :: ax
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integer, dimension(nx, nz) :: ay
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integer, dimension(nx,ny ) :: az
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logical, dimension(nx,ny,nz) :: m, true
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integer, dimension(nx,ny) :: b
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integer, dimension(nx,nx) :: onesx
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integer, dimension(ny,ny) :: onesy
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integer, dimension(nz,nz) :: onesz
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a = p
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m = reshape((/ ((/ .true., .false. /), i=1,size(m)/2) /), shape(m))
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true = reshape((/ (.true., i=1,size(true)) /), shape(true))
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onesx = reshape((/ ((1, j=1,i),(0,j=1,nx-i),i=1,size(onesx,2)) /), shape(onesx))
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onesy = reshape((/ ((1, j=1,i),(0,j=1,ny-i),i=1,size(onesy,2)) /), shape(onesy))
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onesz = reshape((/ ((1, j=1,i),(0,j=1,nz-i),i=1,size(onesz,2)) /), shape(onesz))
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! Correct results in simple cases
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ax = sum(a,1)
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if (any(ax /= px)) call abort
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ay = sum(a,2)
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if (any(ay /= py)) call abort
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az = sum(a,3)
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if (any(az /= pz)) call abort
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! Masks work
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if (any(sum(a,1,.false.) /= 0)) call abort
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if (any(sum(a,2,.true.) /= py)) call abort
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if (any(sum(a,3,m) /= merge(pz,0,m(:,:,1)))) call abort
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if (any(sum(a,2,m) /= merge(sum(a(:, ::2,:),2),&
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sum(a(:,2::2,:),2),&
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m(:,1,:)))) call abort
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! It works too with array constructors ...
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if (any(sum( &
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reshape((/ (i*i,i=1,size(a)) /), shape(a)), &
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1, &
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true) /= ax)) call abort
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! ... and with vector subscripts
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if (any(sum( &
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a((/ (i,i=1,nx) /), &
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(/ (i,i=1,ny) /), &
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(/ (i,i=1,nz) /)), &
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1) /= ax)) call abort
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if (any(sum( &
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a(sum(onesx(:,:),1), & ! unnecessary { dg-warning "Creating array temporary" }
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sum(onesy(:,:),1), & ! unnecessary { dg-warning "Creating array temporary" }
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sum(onesz(:,:),1)), & ! unnecessary { dg-warning "Creating array temporary" }
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1) /= ax)) call abort
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! Nested sums work
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if (sum(sum(sum(a,1),1),1) /= sum(a)) call abort
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if (sum(sum(sum(a,1),2),1) /= sum(a)) call abort
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if (sum(sum(sum(a,3),1),1) /= sum(a)) call abort
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if (sum(sum(sum(a,3),2),1) /= sum(a)) call abort
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if (any(sum(sum(a,1),1) /= sum(sum(a,2),1))) call abort
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if (any(sum(sum(a,1),2) /= sum(sum(a,3),1))) call abort
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if (any(sum(sum(a,2),2) /= sum(sum(a,3),2))) call abort
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! Temps are unavoidable here (function call's argument or result)
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ax = sum(neid3(a),1) ! { dg-warning "Creating array temporary" }
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! Sums as part of a bigger expr work
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if (any(1+sum(eid(a),1)+ax+sum( &
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neid3(a), & ! { dg-warning "Creating array temporary" }
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1)+1 /= 3*ax+2)) call abort
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if (any(1+eid(sum(a,2))+ay+ &
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neid2( & ! { dg-warning "Creating array temporary" }
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sum(a,2) & ! { dg-warning "Creating array temporary" }
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)+1 /= 3*ay+2)) call abort
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if (any(sum(eid(sum(a,3))+az+2* &
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neid2(az) & ! { dg-warning "Creating array temporary" }
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,1)+1 /= 4*sum(az,1)+1)) call abort
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if (any(sum(transpose(sum(a,1)),1)+sum(az,1) /= sum(ax,2)+sum(sum(a,3),1))) call abort
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! Creates a temp when needed.
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a(1,:,:) = sum(a,1) ! unnecessary { dg-warning "Creating array temporary" }
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if (any(a(1,:,:) /= ax)) call abort
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b = p(:,:,1)
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call set(b(2:,1), sum(b(:nx-1,:),2)) ! { dg-warning "Creating array temporary" }
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if (any(b(2:,1) /= ay(1:nx-1,1))) call abort
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b = p(:,:,1)
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call set(b(:,1), sum(b,2)) ! unnecessary { dg-warning "Creating array temporary" }
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if (any(b(:,1) /= ay(:,1))) call abort
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b = p(:,:,1)
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call tes(sum(eid(b(:nx-1,:)),2), b(2:,1)) ! { dg-warning "Creating array temporary" }
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if (any(b(2:,1) /= ay(1:nx-1,1))) call abort
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b = p(:,:,1)
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call tes(eid(sum(b,2)), b(:,1)) ! unnecessary { dg-warning "Creating array temporary" }
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if (any(b(:,1) /= ay(:,1))) call abort
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contains
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elemental function eid (x)
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integer, intent(in) :: x
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integer :: eid
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eid = x
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end function eid
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function neid2 (x)
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integer, intent(in) :: x(:,:)
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integer :: neid2(size(x,1),size(x,2))
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neid2 = x
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end function neid2
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function neid3 (x)
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integer, intent(in) :: x(:,:,:)
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integer :: neid3(size(x,1),size(x,2),size(x,3))
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neid3 = x
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end function neid3
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elemental subroutine set (o, i)
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integer, intent(in) :: i
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integer, intent(out) :: o
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o = i
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end subroutine set
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elemental subroutine tes (i, o)
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integer, intent(in) :: i
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integer, intent(out) :: o
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o = i
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end subroutine tes
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end
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! { dg-final { scan-tree-dump-times "struct array._integer\\(kind=4\\) atmp" 13 "original" } }
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! { dg-final { scan-tree-dump-times "struct array\[^\\n\]*atmp" 13 "original" } }
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! { dg-final { scan-tree-dump-times "_gfortran_sum_" 0 "original" } }
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! { dg-final { cleanup-tree-dump "original" } }
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