derek.holloway
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63 lines
2.4 KiB
Fortran
63 lines
2.4 KiB
Fortran
! RUN: bbc -emit-hlfir %s -o - | %python %S/gen_mod_ref_test.py | \
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! RUN: fir-opt -pass-pipeline='builtin.module(func.func(test-fir-alias-analysis-modref))' \
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! RUN: --mlir-disable-threading -o /dev/null 2>&1 | FileCheck %s
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! Test fir.call modref when arguments are passed to the call. This focus
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! on the possibility of "direct" effects (taken via the arguments, and not
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! via some indirect access via global states).
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subroutine test_simple()
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implicit none
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real :: test_var_x, test_var_y
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call test_effect_external(test_var_x)
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end subroutine
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! CHECK-LABEL: Testing : "_QPtest_simple"
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! CHECK: test_effect_external -> test_var_x#0: ModRef
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! CHECK: test_effect_external -> test_var_y#0: NoModRef
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subroutine test_equivalence()
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implicit none
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real :: test_var_x, test_var_y
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equivalence(test_var_x, test_var_y)
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call test_effect_external(test_var_x)
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end subroutine
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! CHECK-LABEL: Testing : "_QPtest_equivalence"
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! CHECK: test_effect_external -> test_var_x#0: ModRef
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! CHECK: test_effect_external -> test_var_y#0: ModRef
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subroutine test_pointer()
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implicit none
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real, target :: test_var_x, test_var_y
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real, pointer :: p
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p => test_var_x
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call test_effect_external(p)
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end subroutine
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! CHECK-LABEL: Testing : "_QPtest_pointer"
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! CHECK: test_effect_external -> test_var_x#0: ModRef
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! TODO: test_var_y should be NoModRef, the alias analysis is currently very
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! conservative whenever pointer/allocatable descriptors are involved (mostly
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! because it needs to make sure it is dealing descriptors for POINTER/ALLOCATABLE
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! from the Fortran source and that it can apply language rules).
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! CHECK: test_effect_external -> test_var_y#0: ModRef
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subroutine test_array_1(test_var_x)
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implicit none
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real :: test_var_x(:), test_var_y
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call test_effect_external(test_var_x(10))
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end subroutine
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! CHECK-LABEL: Testing : "_QPtest_array_1"
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! CHECK: test_effect_external -> test_var_x#0: ModRef
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! CHECK: test_effect_external -> test_var_y#0: NoModRef
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subroutine test_array_copy_in(test_var_x)
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implicit none
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real :: test_var_x(:), test_var_y
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call test_effect_external_2(test_var_x)
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end subroutine
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! CHECK-LABEL: Testing : "_QPtest_array_copy_in"
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! CHECK: test_effect_external_2 -> test_var_x#0: ModRef
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! TODO: copy-in/out is currently badly understood by alias analysis, this
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! causes the modref analysis to think the argument may alias with anyting.
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! test_var_y should obviously be considered NoMoRef in the call.
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! CHECK: test_effect_external_2 -> test_var_y#0: ModRef
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