[flang-commits] [flang] 30b4421 - [flang][NFC] Add lowering test for array expression

Valentin Clement via flang-commits flang-commits at lists.llvm.org
Thu Mar 24 06:59:47 PDT 2022


Author: Valentin Clement
Date: 2022-03-24T14:59:33+01:00
New Revision: 30b4421a745291fed3f22431264b42c1c1f3afcc

URL: https://github.com/llvm/llvm-project/commit/30b4421a745291fed3f22431264b42c1c1f3afcc
DIFF: https://github.com/llvm/llvm-project/commit/30b4421a745291fed3f22431264b42c1c1f3afcc.diff

LOG: [flang][NFC] Add lowering test for array expression

This patches adds lowering tests for some array
expressions use cases.

This patch is part of the upstreaming effort from fir-dev branch.

Reviewed By: PeteSteinfeld

Differential Revision: https://reviews.llvm.org/D122380

Co-authored-by: Jean Perier <jperier at nvidia.com>
Co-authored-by: Eric Schweitz <eschweitz at nvidia.com>

Added: 
    flang/test/Lower/array-expression-slice-2.f90
    flang/test/Lower/array-expression-subscript.f90

Modified: 
    

Removed: 
    


################################################################################
diff  --git a/flang/test/Lower/array-expression-slice-2.f90 b/flang/test/Lower/array-expression-slice-2.f90
new file mode 100644
index 0000000000000..fd05857e6db1e
--- /dev/null
+++ b/flang/test/Lower/array-expression-slice-2.f90
@@ -0,0 +1,38 @@
+! RUN: bbc %s -o - | FileCheck %s
+
+! CHECK-LABEL: func @_QPi
+subroutine i
+  implicit none
+  integer :: ctemp(10) = (/1,2,3,4,5,6,7,8,9,22/)
+  print *, ctemp(1:10)
+end subroutine i
+
+! CHECK-LABEL: func @_QPs2
+subroutine s2
+  real :: x(10)
+  x = 0.0
+  ! CHECK: fir.call @_FortranAioBeginExternalListOutput
+  print *, x
+  ! CHECK: %[[s:.*]] = fir.slice {{.*}} !fir.slice<1>
+  ! CHECK: %[[p:.*]] = fir.array_coor %{{.*}} [%[[s]]] %
+  ! CHECK: fir.store %{{.*}} to %[[p]] : !fir.ref<f32>
+  x(1:10:3) = 2.0
+  ! CHECK: fir.call @_FortranAioBeginExternalListOutput
+  print *, x
+end subroutine s2
+
+! CHECK-LABEL: func @_QQmain
+program main
+  integer :: A(10)
+  A(1) = 1
+  A(2) = 2
+  A(3) = 3
+  print *, A
+  ! CHECK: %[[A:.*]] = fir.address_of(@_QFEa)
+  ! CHECK: %[[shape:.*]] = fir.shape %c10
+  ! CHECK: %[[slice:.*]] = fir.slice %
+  ! CHECK: fir.embox %[[A]](%[[shape]]) [%[[slice]]] :
+  print*, A(1:3:1)
+  call s
+  call i
+end program main

diff  --git a/flang/test/Lower/array-expression-subscript.f90 b/flang/test/Lower/array-expression-subscript.f90
new file mode 100644
index 0000000000000..8e8bd54ca54b6
--- /dev/null
+++ b/flang/test/Lower/array-expression-subscript.f90
@@ -0,0 +1,196 @@
+! RUN: bbc --emit-fir %s -o - | FileCheck %s
+
+! CHECK-LABEL: func @_QPtest1a(
+! CHECK-SAME:    %[[VAL_0:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}, %[[VAL_1:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}, %[[VAL_2:.*]]: !fir.ref<!fir.array<20xi32>>{{.*}}) {
+! CHECK:         %[[VAL_3:.*]] = arith.constant 10 : index
+! CHECK:         %[[VAL_4:.*]] = arith.constant 10 : index
+! CHECK:         %[[VAL_5:.*]] = arith.constant 20 : index
+! CHECK:         %[[VAL_6:.*]] = fir.shape %[[VAL_3]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_7:.*]] = fir.array_load %[[VAL_0]](%[[VAL_6]]) : (!fir.ref<!fir.array<10xi32>>, !fir.shape<1>) -> !fir.array<10xi32>
+! CHECK:         %[[VAL_8:.*]] = arith.constant 1 : index
+! CHECK:         %[[VAL_9:.*]] = arith.constant 1 : i64
+! CHECK:         %[[VAL_10:.*]] = fir.convert %[[VAL_9]] : (i64) -> index
+! CHECK:         %[[VAL_11:.*]] = arith.constant 2 : i64
+! CHECK:         %[[VAL_12:.*]] = fir.convert %[[VAL_11]] : (i64) -> index
+! CHECK:         %[[VAL_13:.*]] = arith.constant 20 : i64
+! CHECK:         %[[VAL_14:.*]] = fir.convert %[[VAL_13]] : (i64) -> index
+! CHECK:         %[[VAL_15:.*]] = arith.constant 0 : index
+! CHECK:         %[[VAL_16:.*]] = arith.subi %[[VAL_14]], %[[VAL_10]] : index
+! CHECK:         %[[VAL_17:.*]] = arith.addi %[[VAL_16]], %[[VAL_12]] : index
+! CHECK:         %[[VAL_18:.*]] = arith.divsi %[[VAL_17]], %[[VAL_12]] : index
+! CHECK:         %[[VAL_19:.*]] = arith.cmpi sgt, %[[VAL_18]], %[[VAL_15]] : index
+! CHECK:         %[[VAL_20:.*]] = arith.select %[[VAL_19]], %[[VAL_18]], %[[VAL_15]] : index
+! CHECK:         %[[VAL_21:.*]] = fir.shape %[[VAL_5]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_22:.*]] = fir.slice %[[VAL_10]], %[[VAL_14]], %[[VAL_12]] : (index, index, index) -> !fir.slice<1>
+! CHECK:         %[[VAL_23:.*]] = fir.array_load %[[VAL_2]](%[[VAL_21]]) {{\[}}%[[VAL_22]]] : (!fir.ref<!fir.array<20xi32>>, !fir.shape<1>, !fir.slice<1>) -> !fir.array<20xi32>
+! CHECK:         %[[VAL_24:.*]] = arith.cmpi sgt, %[[VAL_20]], %[[VAL_3]] : index
+! CHECK:         %[[VAL_25:.*]] = arith.select %[[VAL_24]], %[[VAL_3]], %[[VAL_20]] : index
+! CHECK:         %[[VAL_32:.*]] = fir.shape %[[VAL_4]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_34:.*]] = fir.array_load %[[VAL_1]](%[[VAL_32]]) : (!fir.ref<!fir.array<10xi32>>, !fir.shape<1>) -> !fir.array<10xi32>
+! CHECK:         %[[VAL_35:.*]] = arith.constant 1 : index
+! CHECK:         %[[VAL_36:.*]] = arith.constant 0 : index
+! CHECK:         %[[VAL_37:.*]] = arith.subi %[[VAL_25]], %[[VAL_35]] : index
+! CHECK:         %[[VAL_38:.*]] = fir.do_loop %[[VAL_39:.*]] = %[[VAL_36]] to %[[VAL_37]] step %[[VAL_35]] unordered iter_args(%[[VAL_40:.*]] = %[[VAL_7]]) -> (!fir.array<10xi32>) {
+! CHECK:           %[[VAL_41:.*]] = fir.array_fetch %[[VAL_23]], %[[VAL_39]] : (!fir.array<20xi32>, index) -> i32
+! CHECK:           %[[VAL_42:.*]] = fir.convert %[[VAL_41]] : (i32) -> index
+! CHECK:           %[[VAL_43:.*]] = arith.subi %[[VAL_42]], %[[VAL_8]] : index
+! CHECK:           %[[VAL_44:.*]] = fir.array_fetch %[[VAL_34]], %[[VAL_43]] : (!fir.array<10xi32>, index) -> i32
+! CHECK:           %[[VAL_45:.*]] = fir.array_update %[[VAL_40]], %[[VAL_44]], %[[VAL_39]] : (!fir.array<10xi32>, i32, index) -> !fir.array<10xi32>
+! CHECK:           fir.result %[[VAL_45]] : !fir.array<10xi32>
+! CHECK:         }
+! CHECK:         fir.array_merge_store %[[VAL_7]], %[[VAL_46:.*]] to %[[VAL_0]] : !fir.array<10xi32>, !fir.array<10xi32>, !fir.ref<!fir.array<10xi32>>
+! CHECK:         return
+! CHECK:       }
+
+subroutine test1a(a,b,c)
+  integer :: a(10), b(10), c(20)
+
+  a = b(c(1:20:2))
+end subroutine test1a
+
+! CHECK-LABEL: func @_QPtest1b(
+! CHECK-SAME:      %[[VAL_0:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}, %[[VAL_1:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}, %[[VAL_2:.*]]: !fir.ref<!fir.array<20xi32>>{{.*}}) {
+! CHECK:         %[[VAL_3:.*]] = arith.constant 10 : index
+! CHECK:         %[[VAL_4:.*]] = arith.constant 10 : index
+! CHECK:         %[[VAL_5:.*]] = arith.constant 20 : index
+! CHECK:         %[[VAL_6:.*]] = arith.constant 1 : index
+! CHECK:         %[[VAL_7:.*]] = arith.constant 1 : i64
+! CHECK:         %[[VAL_8:.*]] = fir.convert %[[VAL_7]] : (i64) -> index
+! CHECK:         %[[VAL_9:.*]] = arith.constant 2 : i64
+! CHECK:         %[[VAL_10:.*]] = fir.convert %[[VAL_9]] : (i64) -> index
+! CHECK:         %[[VAL_11:.*]] = arith.constant 20 : i64
+! CHECK:         %[[VAL_12:.*]] = fir.convert %[[VAL_11]] : (i64) -> index
+! CHECK:         %[[VAL_13:.*]] = arith.constant 0 : index
+! CHECK:         %[[VAL_14:.*]] = arith.subi %[[VAL_12]], %[[VAL_8]] : index
+! CHECK:         %[[VAL_15:.*]] = arith.addi %[[VAL_14]], %[[VAL_10]] : index
+! CHECK:         %[[VAL_16:.*]] = arith.divsi %[[VAL_15]], %[[VAL_10]] : index
+! CHECK:         %[[VAL_17:.*]] = arith.cmpi sgt, %[[VAL_16]], %[[VAL_13]] : index
+! CHECK:         %[[VAL_18:.*]] = arith.select %[[VAL_17]], %[[VAL_16]], %[[VAL_13]] : index
+! CHECK:         %[[VAL_19:.*]] = fir.shape %[[VAL_5]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_20:.*]] = fir.slice %[[VAL_8]], %[[VAL_12]], %[[VAL_10]] : (index, index, index) -> !fir.slice<1>
+! CHECK:         %[[VAL_21:.*]] = fir.array_load %[[VAL_2]](%[[VAL_19]]) {{\[}}%[[VAL_20]]] : (!fir.ref<!fir.array<20xi32>>, !fir.shape<1>, !fir.slice<1>) -> !fir.array<20xi32>
+! CHECK:         %[[VAL_22:.*]] = arith.cmpi sgt, %[[VAL_18]], %[[VAL_4]] : index
+! CHECK:         %[[VAL_23:.*]] = arith.select %[[VAL_22]], %[[VAL_4]], %[[VAL_18]] : index
+! CHECK:         %[[VAL_30:.*]] = fir.shape %[[VAL_4]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_32:.*]] = fir.array_load %[[VAL_1]](%[[VAL_30]]) : (!fir.ref<!fir.array<10xi32>>, !fir.shape<1>) -> !fir.array<10xi32>
+! CHECK:         %[[VAL_33:.*]] = fir.shape %[[VAL_3]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_34:.*]] = fir.array_load %[[VAL_0]](%[[VAL_33]]) : (!fir.ref<!fir.array<10xi32>>, !fir.shape<1>) -> !fir.array<10xi32>
+! CHECK:         %[[VAL_35:.*]] = arith.constant 1 : index
+! CHECK:         %[[VAL_36:.*]] = arith.constant 0 : index
+! CHECK:         %[[VAL_37:.*]] = arith.subi %[[VAL_23]], %[[VAL_35]] : index
+! CHECK:         %[[VAL_38:.*]] = fir.do_loop %[[VAL_39:.*]] = %[[VAL_36]] to %[[VAL_37]] step %[[VAL_35]] unordered iter_args(%[[VAL_40:.*]] = %[[VAL_32]]) -> (!fir.array<10xi32>) {
+! CHECK:           %[[VAL_41:.*]] = fir.array_fetch %[[VAL_34]], %[[VAL_39]] : (!fir.array<10xi32>, index) -> i32
+! CHECK:           %[[VAL_42:.*]] = fir.array_fetch %[[VAL_21]], %[[VAL_39]] : (!fir.array<20xi32>, index) -> i32
+! CHECK:           %[[VAL_43:.*]] = fir.convert %[[VAL_42]] : (i32) -> index
+! CHECK:           %[[VAL_44:.*]] = arith.subi %[[VAL_43]], %[[VAL_6]] : index
+! CHECK:           %[[VAL_45:.*]] = fir.array_update %[[VAL_40]], %[[VAL_41]], %[[VAL_44]] : (!fir.array<10xi32>, i32, index) -> !fir.array<10xi32>
+! CHECK:           fir.result %[[VAL_45]] : !fir.array<10xi32>
+! CHECK:         }
+! CHECK:         fir.array_merge_store %[[VAL_32]], %[[VAL_46:.*]] to %[[VAL_1]] : !fir.array<10xi32>, !fir.array<10xi32>, !fir.ref<!fir.array<10xi32>>
+! CHECK:         return
+! CHECK:       }
+
+subroutine test1b(a,b,c)
+  integer :: a(10), b(10), c(20)
+
+  b(c(1:20:2)) = a
+end subroutine test1b
+
+! CHECK-LABEL: func @_QPtest2a(
+! CHECK-SAME:     %[[VAL_0:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}, %[[VAL_1:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}, %[[VAL_2:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}, %[[VAL_3:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}) {
+! CHECK:         %[[VAL_4:.*]] = arith.constant 10 : index
+! CHECK:         %[[VAL_5:.*]] = arith.constant 10 : index
+! CHECK:         %[[VAL_6:.*]] = arith.constant 10 : index
+! CHECK:         %[[VAL_7:.*]] = arith.constant 10 : index
+! CHECK:         %[[VAL_8:.*]] = fir.shape %[[VAL_4]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_9:.*]] = fir.array_load %[[VAL_0]](%[[VAL_8]]) : (!fir.ref<!fir.array<10xi32>>, !fir.shape<1>) -> !fir.array<10xi32>
+! CHECK:         %[[VAL_10:.*]] = arith.constant 1 : index
+! CHECK:         %[[VAL_11:.*]] = arith.constant 1 : index
+! CHECK:         %[[VAL_12:.*]] = fir.shape %[[VAL_7]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_13:.*]] = fir.array_load %[[VAL_3]](%[[VAL_12]]) : (!fir.ref<!fir.array<10xi32>>, !fir.shape<1>) -> !fir.array<10xi32>
+! CHECK:         %[[VAL_14:.*]] = arith.cmpi sgt, %[[VAL_7]], %[[VAL_6]] : index
+! CHECK:         %[[VAL_15:.*]] = arith.select %[[VAL_14]], %[[VAL_6]], %[[VAL_7]] : index
+! CHECK:         %[[VAL_16:.*]] = fir.shape %[[VAL_6]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_18:.*]] = fir.array_load %[[VAL_2]](%[[VAL_16]]) : (!fir.ref<!fir.array<10xi32>>, !fir.shape<1>) -> !fir.array<10xi32>
+! CHECK:         %[[VAL_19:.*]] = arith.cmpi sgt, %[[VAL_15]], %[[VAL_4]] : index
+! CHECK:         %[[VAL_20:.*]] = arith.select %[[VAL_19]], %[[VAL_4]], %[[VAL_15]] : index
+! CHECK:         %[[VAL_27:.*]] = fir.shape %[[VAL_5]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_29:.*]] = fir.array_load %[[VAL_1]](%[[VAL_27]]) : (!fir.ref<!fir.array<10xi32>>, !fir.shape<1>) -> !fir.array<10xi32>
+! CHECK:         %[[VAL_30:.*]] = arith.constant 1 : index
+! CHECK:         %[[VAL_31:.*]] = arith.constant 0 : index
+! CHECK:         %[[VAL_32:.*]] = arith.subi %[[VAL_20]], %[[VAL_30]] : index
+! CHECK:         %[[VAL_33:.*]] = fir.do_loop %[[VAL_34:.*]] = %[[VAL_31]] to %[[VAL_32]] step %[[VAL_30]] unordered iter_args(%[[VAL_35:.*]] = %[[VAL_9]]) -> (!fir.array<10xi32>) {
+! CHECK:           %[[VAL_36:.*]] = fir.array_fetch %[[VAL_13]], %[[VAL_34]] : (!fir.array<10xi32>, index) -> i32
+! CHECK:           %[[VAL_37:.*]] = fir.convert %[[VAL_36]] : (i32) -> index
+! CHECK:           %[[VAL_38:.*]] = arith.subi %[[VAL_37]], %[[VAL_11]] : index
+! CHECK:           %[[VAL_39:.*]] = fir.array_fetch %[[VAL_18]], %[[VAL_38]] : (!fir.array<10xi32>, index) -> i32
+! CHECK:           %[[VAL_40:.*]] = fir.convert %[[VAL_39]] : (i32) -> index
+! CHECK:           %[[VAL_41:.*]] = arith.subi %[[VAL_40]], %[[VAL_10]] : index
+! CHECK:           %[[VAL_42:.*]] = fir.array_fetch %[[VAL_29]], %[[VAL_41]] : (!fir.array<10xi32>, index) -> i32
+! CHECK:           %[[VAL_43:.*]] = fir.array_update %[[VAL_35]], %[[VAL_42]], %[[VAL_34]] : (!fir.array<10xi32>, i32, index) -> !fir.array<10xi32>
+! CHECK:           fir.result %[[VAL_43]] : !fir.array<10xi32>
+! CHECK:         }
+! CHECK:         fir.array_merge_store %[[VAL_9]], %[[VAL_44:.*]] to %[[VAL_0]] : !fir.array<10xi32>, !fir.array<10xi32>, !fir.ref<!fir.array<10xi32>>
+! CHECK:         return
+! CHECK:       }
+
+subroutine test2a(a,b,c,d)
+  integer :: a(10), b(10), c(10), d(10)
+
+  a = b(c(d))
+end subroutine test2a
+
+! CHECK-LABEL: func @_QPtest2b(
+! CHECK-SAME:      %[[VAL_0:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}, %[[VAL_1:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}, %[[VAL_2:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}, %[[VAL_3:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}) {
+! CHECK:         %[[VAL_4:.*]] = arith.constant 10 : index
+! CHECK:         %[[VAL_5:.*]] = arith.constant 10 : index
+! CHECK:         %[[VAL_6:.*]] = arith.constant 10 : index
+! CHECK:         %[[VAL_7:.*]] = arith.constant 10 : index
+! CHECK:         %[[VAL_8:.*]] = arith.constant 1 : index
+! CHECK:         %[[VAL_9:.*]] = arith.constant 1 : index
+! CHECK:         %[[VAL_10:.*]] = fir.shape %[[VAL_7]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_11:.*]] = fir.array_load %[[VAL_3]](%[[VAL_10]]) : (!fir.ref<!fir.array<10xi32>>, !fir.shape<1>) -> !fir.array<10xi32>
+! CHECK:         %[[VAL_12:.*]] = arith.cmpi sgt, %[[VAL_7]], %[[VAL_6]] : index
+! CHECK:         %[[VAL_13:.*]] = arith.select %[[VAL_12]], %[[VAL_6]], %[[VAL_7]] : index
+! CHECK:         %[[VAL_14:.*]] = fir.shape %[[VAL_6]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_16:.*]] = fir.array_load %[[VAL_2]](%[[VAL_14]]) : (!fir.ref<!fir.array<10xi32>>, !fir.shape<1>) -> !fir.array<10xi32>
+! CHECK:         %[[VAL_17:.*]] = arith.cmpi sgt, %[[VAL_13]], %[[VAL_5]] : index
+! CHECK:         %[[VAL_18:.*]] = arith.select %[[VAL_17]], %[[VAL_5]], %[[VAL_13]] : index
+! CHECK:         %[[VAL_25:.*]] = fir.shape %[[VAL_5]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_27:.*]] = fir.array_load %[[VAL_1]](%[[VAL_25]]) : (!fir.ref<!fir.array<10xi32>>, !fir.shape<1>) -> !fir.array<10xi32>
+! CHECK:         %[[VAL_28:.*]] = fir.shape %[[VAL_4]] : (index) -> !fir.shape<1>
+! CHECK:         %[[VAL_29:.*]] = fir.array_load %[[VAL_0]](%[[VAL_28]]) : (!fir.ref<!fir.array<10xi32>>, !fir.shape<1>) -> !fir.array<10xi32>
+! CHECK:         %[[VAL_30:.*]] = arith.constant 1 : index
+! CHECK:         %[[VAL_31:.*]] = arith.constant 0 : index
+! CHECK:         %[[VAL_32:.*]] = arith.subi %[[VAL_18]], %[[VAL_30]] : index
+! CHECK:         %[[VAL_33:.*]] = fir.do_loop %[[VAL_34:.*]] = %[[VAL_31]] to %[[VAL_32]] step %[[VAL_30]] unordered iter_args(%[[VAL_35:.*]] = %[[VAL_27]]) -> (!fir.array<10xi32>) {
+! CHECK:           %[[VAL_36:.*]] = fir.array_fetch %[[VAL_29]], %[[VAL_34]] : (!fir.array<10xi32>, index) -> i32
+! CHECK:           %[[VAL_37:.*]] = fir.array_fetch %[[VAL_11]], %[[VAL_34]] : (!fir.array<10xi32>, index) -> i32
+! CHECK:           %[[VAL_38:.*]] = fir.convert %[[VAL_37]] : (i32) -> index
+! CHECK:           %[[VAL_39:.*]] = arith.subi %[[VAL_38]], %[[VAL_9]] : index
+! CHECK:           %[[VAL_40:.*]] = fir.array_fetch %[[VAL_16]], %[[VAL_39]] : (!fir.array<10xi32>, index) -> i32
+! CHECK:           %[[VAL_41:.*]] = fir.convert %[[VAL_40]] : (i32) -> index
+! CHECK:           %[[VAL_42:.*]] = arith.subi %[[VAL_41]], %[[VAL_8]] : index
+! CHECK:           %[[VAL_43:.*]] = fir.array_update %[[VAL_35]], %[[VAL_36]], %[[VAL_42]] : (!fir.array<10xi32>, i32, index) -> !fir.array<10xi32>
+! CHECK:           fir.result %[[VAL_43]] : !fir.array<10xi32>
+! CHECK:         }
+! CHECK:         fir.array_merge_store %[[VAL_27]], %[[VAL_44:.*]] to %[[VAL_1]] : !fir.array<10xi32>, !fir.array<10xi32>, !fir.ref<!fir.array<10xi32>>
+! CHECK:         return
+! CHECK:       }
+
+subroutine test2b(a,b,c,d)
+  integer :: a(10), b(10), c(10), d(10)
+
+  b(c(d)) = a
+end subroutine test2b
+
+! CHECK-LABEL: func @_QPtest1c(
+! CHECK-SAME: %[[VAL_0:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}, %[[VAL_1:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}, %[[VAL_2:.*]]: !fir.ref<!fir.array<20xi32>>{{.*}}, %[[VAL_3:.*]]: !fir.ref<!fir.array<10xi32>>{{.*}}) {
+! CHECK:         return
+! CHECK:       }
+subroutine test1c(a,b,c,d)
+  integer :: a(10), b(10), d(10), c(20)
+
+  ! flang: parser FAIL (final position)
+  !a = b(d(c(1:20:2))
+end subroutine test1c


        


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