derek.holloway
7502bf64a4
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35 lines
1008 B
Fortran
35 lines
1008 B
Fortran
! RUN: bbc -fopenacc -emit-hlfir %s -o - | FileCheck %s
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! Verify collapse(force:2) sinks prologue/epilogue and eliminates
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! the inner loop (absorbed by the outer collapse).
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subroutine collapse_force_sink(n, m)
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integer, intent(in) :: n, m
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real, dimension(n,m) :: a
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real, dimension(n) :: bb, cc
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integer :: i, j
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!$acc parallel loop collapse(force:2)
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do i = 1, n
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bb(i) = 4.2 ! prologue (between loops)
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do j = 1, m
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a(i,j) = a(i,j) + 2.0
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end do
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cc(i) = 7.3 ! epilogue (after inner loop)
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end do
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!$acc end parallel loop
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end subroutine
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! CHECK-LABEL: func.func @_QPcollapse_force_sink(
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! CHECK: acc.parallel
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! Only one acc.loop with collapse = [2], inner loop absorbed
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! CHECK: acc.loop combined(parallel)
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! Prologue (4.2), body (2.0 add), epilogue (7.3) all inside
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! CHECK: arith.constant 4.200000e+00
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! CHECK: hlfir.assign
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! CHECK: arith.constant 2.000000e+00
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! CHECK: hlfir.assign
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! CHECK: arith.constant 7.300000e+00
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! CHECK: hlfir.assign
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! CHECK: collapse = [2]
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