derek.holloway
7502bf64a4
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58 lines
2.1 KiB
Fortran
58 lines
2.1 KiB
Fortran
!===----------------------------------------------------------------------===!
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! This directory can be used to add Integration tests involving multiple
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! stages of the compiler (for eg. from Fortran to LLVM IR). It should not
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! contain executable tests. We should only add tests here sparingly and only
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! if there is no other way to test. Repeat this message in each test that is
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! added to this directory and sub-directories.
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!===----------------------------------------------------------------------===!
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! Regression test for https://github.com/llvm/llvm-project/issues/143330
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! Verify that forall constructs with sliced arrays inside workshare are
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! correctly lowered without causing race conditions or crashes.
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!RUN: %flang_fc1 -emit-hlfir -fopenmp %s -o - | FileCheck %s --check-prefix HLFIR
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!RUN: %flang_fc1 -emit-fir -fopenmp %s -o - | FileCheck %s --check-prefix FIR
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!RUN: %flang_fc1 -emit-llvm -fopenmp %s -o - | FileCheck %s --check-prefix LLVM
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subroutine workshare_forall_sliced(a1)
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integer :: a1(2,1,3)
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!$omp parallel
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!$omp workshare
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forall (n1=1:1)
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forall (n2=1:3)
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a1(:,n1,n2) = a1(:,n1,n2)+1
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end forall
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end forall
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!$omp end workshare
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!$omp end parallel
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end subroutine
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! HLFIR-LABEL: func.func @_QPworkshare_forall_sliced
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! HLFIR: omp.parallel {
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! HLFIR: omp.workshare {
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! HLFIR: hlfir.forall
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! HLFIR: hlfir.forall
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! HLFIR: hlfir.region_assign
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! HLFIR: omp.terminator
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! HLFIR: }
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! HLFIR: omp.terminator
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! HLFIR: }
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! After workshare lowering, the forall should be in omp.single (since it
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! contains operations that are not safe to parallelize across threads).
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! The key fix is that this compiles without crashing and the runtime
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! executes correctly.
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! FIR-LABEL: func.func @_QPworkshare_forall_sliced
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! FIR: omp.parallel {
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! FIR: omp.single
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! FIR: fir.do_loop
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! FIR: fir.do_loop
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! FIR: omp.barrier
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! FIR: omp.terminator
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! FIR: }
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! Verify LLVM IR is generated successfully (the original issue caused crashes)
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! LLVM-LABEL: define {{.*}}workshare_forall_sliced
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! LLVM: call {{.*}}@__kmpc_fork_call
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