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TheRock/compiler/amd-llvm/flang/test/Semantics/OpenMP/declare-reduction-mangled.f90
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

52 lines
1.4 KiB
Fortran

! RUN: %flang_fc1 -fdebug-dump-symbols -fopenmp -fopenmp-version=50 %s | FileCheck %s
!! Test that the name mangling for min & max (also used for iand, ieor and ior).
module mymod
type :: tt
real r
end type tt
contains
function mymax(a, b)
type(tt) :: a, b, mymax
if (a%r > b%r) then
mymax = a
else
mymax = b
end if
end function mymax
end module mymod
program omp_examples
!CHECK-LABEL: MainProgram scope: OMP_EXAMPLES
use mymod
implicit none
integer, parameter :: n = 100
integer :: i
type(tt) :: values(n), big, small
!$omp declare reduction(max:tt:omp_out = mymax(omp_out, omp_in)) initializer(omp_priv%r = 0)
!$omp declare reduction(min:tt:omp_out%r = min(omp_out%r, omp_in%r)) initializer(omp_priv%r = 1)
!CHECK: min, ELEMENTAL, INTRINSIC, PURE (Function): ProcEntity
!CHECK: mymax (Function): Use from mymax in mymod
!CHECK: op.max: UserReductionDetails TYPE(tt)
!CHECK: op.min: UserReductionDetails TYPE(tt)
big%r = 0
!$omp parallel do reduction(max:big)
!CHECK: big (OmpReduction, OmpExplicit): HostAssoc
!CHECK: max, INTRINSIC: ProcEntity
do i = 1, n
big = mymax(values(i), big)
end do
small%r = 1
!$omp parallel do reduction(min:small)
!CHECK: small (OmpReduction, OmpExplicit): HostAssoc
do i = 1, n
small%r = min(values(i)%r, small%r)
end do
print *, "small=", small%r, " big=", big%r
end program omp_examples