05fd4d5775
When a field in a derived type is `c_devptr`, keep check if we can do a memcpy instead of falling back to the runtime assignment. Many internal CUDA Fortran derived type have a `c_devptr` field and this would lead to stack overflow on the device if the assignment is performed by the runtime function.
90 lines
5.1 KiB
Plaintext
90 lines
5.1 KiB
Plaintext
! RUN: bbc -emit-fir -hlfir -fcuda %s -o - | FileCheck %s
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! Test CUDA Fortran specific type
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module cudafct
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use __fortran_builtins, only : c_devptr => __builtin_c_devptr
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type :: t1
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type(c_devptr) :: devp
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integer :: a
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end type
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contains
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function c_devloc(x)
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use iso_c_binding, only: c_loc
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type(c_devptr) :: c_devloc
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!dir$ ignore_tkr (tkr) x
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real, target, device :: x
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c_devloc%cptr = c_loc(x)
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end function
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attributes(device) function get_t1()
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type(t1) :: get_t1
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end
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end
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subroutine sub1()
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use iso_c_binding
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use __fortran_builtins, only : c_devptr => __builtin_c_devptr
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type(c_ptr) :: ptr
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type(c_devptr) :: dptr
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print*,ptr
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print*,dptr
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end
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! CHECK-LABEL: func.func @_QPsub1()
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! CHECK-COUNT-2: %{{.*}} = fir.call @_FortranAioOutputDerivedType
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subroutine sub2()
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use cudafct
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use iso_c_binding, only: c_f_pointer
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real(4), device :: a(8, 10)
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real(4), device, pointer :: x(:)
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call c_f_pointer(c_devloc(a), x, (/80/))
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end
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! CHECK-LABEL: func.func @_QPsub2()
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! CHECK: %[[X:.*]] = fir.declare %{{.*}} {data_attr = #cuf.cuda<device>, fortran_attrs = #fir.var_attrs<pointer>, uniq_name = "_QFsub2Ex"} : (!fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>) -> !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
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! CHECK: %[[CPTR:.*]] = fir.field_index cptr, !fir.type<_QM__fortran_builtinsT__builtin_c_devptr{{[<]?}}{cptr:!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>}{{[>]?}}>
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! CHECK: %[[CPTR_COORD:.*]] = fir.coordinate_of %{{.*}}, %[[CPTR]] : (!fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_devptr{{[<]?}}{cptr:!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>}{{[>]?}}>>, !fir.field) -> !fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>>
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! CHECK: %[[ADDRESS:.*]] = fir.field_index __address, !fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>
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! CHECK: %[[ADDRESS_COORD:.*]] = fir.coordinate_of %[[CPTR_COORD]], %[[ADDRESS]] : (!fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>>, !fir.field) -> !fir.ref<i64>
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! CHECK: %[[ADDRESS_LOADED:.*]] = fir.load %[[ADDRESS_COORD]] : !fir.ref<i64>
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! CHECK: %[[ADDRESS_IDX:.*]] = fir.convert %[[ADDRESS_LOADED]] : (i64) -> !fir.ptr<!fir.array<?xf32>>
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! CHECK: %[[EMBOX:.*]] = fir.embox %[[ADDRESS_IDX]](%{{.*}}) : (!fir.ptr<!fir.array<?xf32>>, !fir.shape<1>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
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! CHECK: fir.store %[[EMBOX]] to %[[X]] : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
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attributes(global) subroutine assign_c_devptr(p, a)
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use __fortran_builtins, only: c_devloc => __builtin_c_devloc
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use __fortran_builtins, only: c_devptr => __builtin_c_devptr
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type (c_devptr), device :: p
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complex :: a(10)
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p = c_devloc(a(1))
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end subroutine
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! CHECK-LABEL: func.func @_QPassign_c_devptr
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! CHECK: %[[P:.*]] = fir.declare %arg0 dummy_scope %{{.*}} {data_attr = #cuf.cuda<device>, uniq_name = "_QFassign_c_devptrEp"}
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! CHECK: %[[C_DEVLOC_RES:.*]] = fir.declare %15 {uniq_name = ".tmp.intrinsic_result"} : (!fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_devptr{cptr:!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>}>>) -> !fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_devptr{cptr:!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>}>>
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! CHECK: %[[CPTR_FIELD:.*]] = fir.field_index cptr, !fir.type<_QM__fortran_builtinsT__builtin_c_devptr{cptr:!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>}>
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! CHECK: %[[RES_CPTR_COORD:.*]] = fir.coordinate_of %[[C_DEVLOC_RES]], %[[CPTR_FIELD]] : (!fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_devptr{cptr:!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>}>>, !fir.field) -> !fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>>
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! CHECK: %[[CPTR_FIELD:.*]] = fir.field_index cptr, !fir.type<_QM__fortran_builtinsT__builtin_c_devptr{cptr:!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>}>
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! CHECK: %[[P_CPTR_COORD:.*]] = fir.coordinate_of %[[P]], %[[CPTR_FIELD]] : (!fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_devptr{cptr:!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>}>>, !fir.field) -> !fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>>
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! CHECK: %[[ADDRESS_FIELD:.*]] = fir.field_index __address, !fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>
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! CHECK: %[[RES_ADDR_COORD:.*]] = fir.coordinate_of %[[RES_CPTR_COORD]], %[[ADDRESS_FIELD]] : (!fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>>, !fir.field) -> !fir.ref<i64>
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! CHECK: %[[ADDRESS_FIELD:.*]] = fir.field_index __address, !fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>
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! CHECK: %[[P_ADDR_COORD:.*]] = fir.coordinate_of %[[P_CPTR_COORD]], %[[ADDRESS_FIELD]] : (!fir.ref<!fir.type<_QM__fortran_builtinsT__builtin_c_ptr{__address:i64}>>, !fir.field) -> !fir.ref<i64>
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! CHECK: %[[ADDR:.*]] = fir.load %[[RES_ADDR_COORD]] : !fir.ref<i64>
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! CHECK: fir.store %[[ADDR]] to %[[P_ADDR_COORD]] : !fir.ref<i64>
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attributes(global) subroutine assign_nested_c_devptr(p, a)
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use cudafct
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type(t1), device :: p
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p = get_t1()
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end subroutine
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! CHECK-LABEL: func.func @_QPassign_nested_c_devptr
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! CHECK-NOT: fir.call @_FortranAAssign
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