derek.holloway
7502bf64a4
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89 lines
2.0 KiB
Fortran
89 lines
2.0 KiB
Fortran
! RUN: %flang_fc1 -emit-hlfir -fopenmp %s -o - | FileCheck %s --check-prefix=FIR
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! Test that OpenMP target regions in dead code are deleted
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! Test 1: if (.false.) with target - target should be deleted
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! FIR-LABEL: func.func @_QPtest_dead_simple
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! FIR: %[[FALSE:.*]] = arith.constant false
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! FIR: fir.if %[[FALSE]] {
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! FIR-NOT: omp.target
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subroutine test_dead_simple()
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real :: v
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if (.false.) then
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!$omp target map(tofrom:v)
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v = 1.0
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!$omp end target
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end if
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end subroutine
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! Test 2: Live target - should remain
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! FIR-LABEL: func.func @_QPtest_live_simple
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! FIR: omp.target
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subroutine test_live_simple()
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real :: v
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!$omp target map(tofrom:v)
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v = 2.0
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!$omp end target
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end subroutine
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! Test 3: Mixed dead and live
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! FIR-LABEL: func.func @_QPtest_mixed
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subroutine test_mixed()
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real :: v
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! Dead - should be deleted
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! FIR: fir.if %{{.*}} {
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if (.false.) then
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!$omp target map(tofrom:v)
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v = 3.0
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!$omp end target
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end if
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! FIR-NOT: omp.target
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! Live - should remain (expect exactly 1 omp.target in function)
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!$omp target map(tofrom:v)
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! FIR: omp.target
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v = 4.0
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!$omp end target
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end subroutine
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! Test 4: Nested - outer false, target should be deleted
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! FIR-LABEL: func.func @_QPtest_nested_outer_false
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subroutine test_nested_outer_false()
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real :: v
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! FIR: fir.if %{{.*}} {
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if (.false.) then
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if (.true.) then
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!$omp target map(tofrom:v)
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v = 5.0
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!$omp end target
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end if
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end if
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! FIR-NOT: omp.target
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end subroutine
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! Test 5: Parameter constant - target should be deleted
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! FIR-LABEL: func.func @_QPtest_parameter
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subroutine test_parameter()
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real :: v
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logical, parameter :: DEAD = .false.
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! FIR: fir.if %{{.*}} {
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if (DEAD) then
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!$omp target map(tofrom:v)
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v = 6.0
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!$omp end target
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end if
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! FIR-NOT: omp.target
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end subroutine
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! FIR-LABEL: func.func @_QPtest_outer
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subroutine test_outer
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implicit none
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contains
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subroutine unused_sub()
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real :: v
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!$omp target map(tofrom: v)
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v = 5.0
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!$omp end target
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end subroutine
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! FIR-NOT: omp.target
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end subroutine
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