derek.holloway
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34 lines
1.1 KiB
Fortran
34 lines
1.1 KiB
Fortran
! Test OpenMP declare reduction with character type and allocatable variable.
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! This test ensures that Flang doesn't crash when processing user-defined
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! reductions with character types on allocatable variables.
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! See issue: https://github.com/llvm/llvm-project/issues/177501
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! RUN: %flang_fc1 -emit-hlfir -fopenmp %s -o - | FileCheck %s
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! Test basic character reduction with allocatable variable (constant length)
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program test_character_reduction
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character(len=1), allocatable :: k1
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!$omp declare reduction (char_max:character(len=1):omp_out=max(omp_out,omp_in)) &
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!$omp initializer(omp_priv='a')
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!$omp parallel sections reduction(char_max:k1)
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k1 = max(k1, 'z')
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!$omp end parallel sections
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end program test_character_reduction
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! Verify the declare_reduction is generated with reference type for character
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! CHECK-LABEL: omp.declare_reduction @char_max : !fir.ref<!fir.char<1>>
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! CHECK: init {
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! CHECK: omp.yield
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! Verify the combiner region works
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! CHECK: combiner
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! CHECK: hlfir.declare
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! CHECK: omp.yield
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! Verify the reduction is used in the parallel sections
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! CHECK: omp.parallel
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! CHECK: omp.sections reduction(byref @char_max
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