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Jun 13, 2024
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Adding a couple of pointer components tests #95287

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54 changes: 53 additions & 1 deletion flang/test/Analysis/AliasAnalysis/alias-analysis-9.fir
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
// RUN: fir-opt %s -pass-pipeline='builtin.module(func.func(test-fir-alias-analysis))' 2>&1 | FileCheck %s
// RUN: fir-opt %s -pass-pipeline='builtin.module(func.func(test-fir-alias-analysis))' -split-input-file 2>&1 | FileCheck %s

// -----

// module m
// type t
Expand Down Expand Up @@ -57,3 +58,54 @@ func.func @_QMmPfoo(%arg0: !fir.ref<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir
hlfir.assign %15 to %3#0 : i32, !fir.ref<i32>
return
}

// -----

// Same test as above focusing on aliasing between x%next and y%next data
// CHECK-LABEL: Testing : "_QMmPfoo2"
// CHECK-DAG: xnext#0 <-> ynext#0: MayAlias

func.func @_QMmPfoo2(%arg0: !fir.ref<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>> {fir.bindc_name = "x"}, %arg1: !fir.ref<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>> {fir.bindc_name = "y"}) {
%4:2 = hlfir.declare %arg0 {uniq_name = "_QMmFfooEx"} : (!fir.ref<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>) -> (!fir.ref<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>, !fir.ref<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>)
%5:2 = hlfir.declare %arg1 {uniq_name = "_QMmFfooEy"} : (!fir.ref<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>) -> (!fir.ref<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>, !fir.ref<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>)
%6 = hlfir.designate %4#0{"next"} {fortran_attrs = #fir.var_attrs<pointer>} : (!fir.ref<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>) -> !fir.ref<!fir.box<!fir.ptr<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>>>
%7 = fir.load %6 : !fir.ref<!fir.box<!fir.ptr<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>>>
%8 = fir.box_addr %7 {test.ptr = "xnext"} : (!fir.box<!fir.ptr<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>>) -> !fir.ptr<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>

%9 = hlfir.designate %5#0{"next"} {fortran_attrs = #fir.var_attrs<pointer>} : (!fir.ref<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>) -> !fir.ref<!fir.box<!fir.ptr<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>>>
%10 = fir.load %9 : !fir.ref<!fir.box<!fir.ptr<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>>>
%11 = fir.box_addr %10 {test.ptr = "ynext"} : (!fir.box<!fir.ptr<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>>) -> !fir.ptr<!fir.type<_QMmTt{next:!fir.box<!fir.ptr<!fir.type<_QMmTt>>>,i:i32}>>
return
}

// -----

// module m
// type ta
// integer, pointer :: array(:)
// end type
// contains
// subroutine foo3(x, y)
// type(t) :: x, y
// x%array(1) = y%array(1)
// end subroutine
// end module

// CHECK-LABEL: Testing : "_QMmPfoo3"
// CHECK-DAG: yarray#0 <-> xarray#0: MayAlias

func.func @_QMmPfoo3(%arg0: !fir.ref<!fir.type<_QMmTta{array:!fir.box<!fir.ptr<!fir.array<?xi32>>>}>> {fir.bindc_name = "x"}, %arg1: !fir.ref<!fir.type<_QMmTta{array:!fir.box<!fir.ptr<!fir.array<?xi32>>>}>> {fir.bindc_name = "y"}) {
%0:2 = hlfir.declare %arg0 {uniq_name = "_QMmFfooEx"} : (!fir.ref<!fir.type<_QMmTta{array:!fir.box<!fir.ptr<!fir.array<?xi32>>>}>>) -> (!fir.ref<!fir.type<_QMmTta{array:!fir.box<!fir.ptr<!fir.array<?xi32>>>}>>, !fir.ref<!fir.type<_QMmTta{array:!fir.box<!fir.ptr<!fir.array<?xi32>>>}>>)
%1:2 = hlfir.declare %arg1 {uniq_name = "_QMmFfooEy"} : (!fir.ref<!fir.type<_QMmTta{array:!fir.box<!fir.ptr<!fir.array<?xi32>>>}>>) -> (!fir.ref<!fir.type<_QMmTta{array:!fir.box<!fir.ptr<!fir.array<?xi32>>>}>>, !fir.ref<!fir.type<_QMmTta{array:!fir.box<!fir.ptr<!fir.array<?xi32>>>}>>)
%2 = hlfir.designate %1#0{"array"} {fortran_attrs = #fir.var_attrs<pointer>} : (!fir.ref<!fir.type<_QMmTta{array:!fir.box<!fir.ptr<!fir.array<?xi32>>>}>>) -> !fir.ref<!fir.box<!fir.ptr<!fir.array<?xi32>>>>
%3 = fir.load %2 : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xi32>>>>
%c1 = arith.constant 1 : index
%4 = hlfir.designate %3 (%c1) {test.ptr = "yarray"} : (!fir.box<!fir.ptr<!fir.array<?xi32>>>, index) -> !fir.ref<i32>
%5 = fir.load %4 : !fir.ref<i32>
%6 = hlfir.designate %0#0{"array"} {fortran_attrs = #fir.var_attrs<pointer>} : (!fir.ref<!fir.type<_QMmTta{array:!fir.box<!fir.ptr<!fir.array<?xi32>>>}>>) -> !fir.ref<!fir.box<!fir.ptr<!fir.array<?xi32>>>>
%7 = fir.load %6 : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xi32>>>>
%c1_0 = arith.constant 1 : index
%8 = hlfir.designate %7 (%c1_0) {test.ptr = "xarray"} : (!fir.box<!fir.ptr<!fir.array<?xi32>>>, index) -> !fir.ref<i32>
hlfir.assign %5 to %8 : i32, !fir.ref<i32>
return
}