derek.holloway
7502bf64a4
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60 lines
1.9 KiB
Fortran
60 lines
1.9 KiB
Fortran
! RUN: bbc -emit-hlfir -gpu=managed %s -o - | FileCheck %s
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! RUN: bbc -emit-hlfir -gpu=mem:managed %s -o - | FileCheck %s
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! Test that -gpu=managed (a.k.a. -gpu=mem:managed) does NOT implicitly tag
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! plain Fortran allocatables as CUDA managed when CUDA Fortran is not
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! enabled. The implicit-managed tagging is a CUDA Fortran convenience and
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! should only fire when -fcuda is also in effect (or the source is .cuf).
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! Otherwise, a non-CUDA-Fortran translation unit (e.g. pure OpenACC code
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! compiled with -gpu=mem:managed by the driver) would route every
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! allocatable through the CUDA Fortran managed descriptor pipeline and
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! crash at runtime in cudaGetSymbolAddress.
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subroutine test_no_implicit_managed()
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real, allocatable :: a(:)
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allocate(a(100))
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a = 1.0
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deallocate(a)
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end subroutine
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subroutine test_no_implicit_managed_multidim()
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real, allocatable :: arr(:,:,:)
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allocate(arr(10,20,30))
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arr = 0.0
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deallocate(arr)
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end subroutine
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module mod_no_managed
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real, allocatable :: g(:)
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end module
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subroutine test_no_implicit_managed_module()
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use mod_no_managed
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allocate(g(50))
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deallocate(g)
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end subroutine
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! CHECK-LABEL: func.func @_QPtest_no_implicit_managed()
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! CHECK-NOT: cuf.alloc
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! CHECK-NOT: data_attr = #cuf.cuda<managed>
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! CHECK-NOT: allocator_idx = 3
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! CHECK-NOT: cuf.allocate
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! CHECK-NOT: cuf.deallocate
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! CHECK-NOT: cuf.free
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! CHECK-LABEL: func.func @_QPtest_no_implicit_managed_multidim()
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! CHECK-NOT: cuf.alloc
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! CHECK-NOT: data_attr = #cuf.cuda<managed>
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! CHECK-NOT: allocator_idx = 3
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! CHECK-LABEL: func.func @_QPtest_no_implicit_managed_module()
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! CHECK-NOT: cuf.allocate
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! CHECK-NOT: cuf.deallocate
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! CHECK-NOT: data_attr = #cuf.cuda<managed>
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! CHECK-NOT: allocator_idx = 3
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! Module global must not be tagged as managed either.
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! CHECK: fir.global @_QMmod_no_managedEg
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! CHECK-NOT: data_attr = #cuf.cuda<managed>
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! CHECK-NOT: allocator_idx = 3
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