xref: /llvm-project/flang/test/Lower/character-concatenation.f90 (revision f35f863a88f83332bef9605ef4cfe4f05c066efb)
1! RUN: bbc -emit-fir -hlfir=false %s -o - | FileCheck %s
2
3! Test character scalar concatenation lowering
4
5! CHECK-LABEL: concat_1
6subroutine concat_1(a, b)
7  ! CHECK-DAG: %[[a:.*]]:2 = fir.unboxchar %arg0
8  ! CHECK-DAG: %[[b:.*]]:2 = fir.unboxchar %arg1
9  character(*) :: a, b
10
11  ! CHECK: call @{{.*}}BeginExternalListOutput
12  print *, a // b
13  ! Concatenation
14
15  ! CHECK: %[[len:.*]] = arith.addi %[[a]]#1, %[[b]]#1
16  ! CHECK: %[[temp:.*]] = fir.alloca !fir.char<1,?>(%[[len]] : index)
17
18  ! CHECK-DAG: %[[c1:.*]] = arith.constant 1
19  ! CHECK-DAG: %[[a2:.*]] = fir.convert %[[a]]#1
20  ! CHECK: %[[count:.*]] = arith.muli %[[c1]], %[[a2]]
21  ! CHECK-DAG: constant false
22  ! CHECK-DAG: %[[to:.*]] = fir.convert %[[temp]] : (!fir.ref<!fir.char<1,?>>) -> !fir.ref<i8>
23  ! CHECK-DAG: %[[from:.*]] = fir.convert %[[a]]#0 : (!fir.ref<!fir.char<1,?>>) -> !fir.ref<i8>
24  ! CHECK: fir.call @llvm.memmove.p0.p0.i64(%[[to]], %[[from]], %[[count]], %false) {{.*}}: (!fir.ref<i8>, !fir.ref<i8>, i64, i1) -> ()
25
26  ! CHECK: %[[c1_0:.*]] = arith.constant 1
27  ! CHECK: %[[count2:.*]] = arith.subi %[[len]], %[[c1_0]]
28  ! CHECK: fir.do_loop %[[index2:.*]] = %[[a]]#1 to %[[count2]] step %[[c1_0]] {
29    ! CHECK: %[[b_index:.*]] = arith.subi %[[index2]], %[[a]]#1
30    ! CHECK: %[[b_cast:.*]] = fir.convert %[[b]]#0
31    ! CHECK: %[[b_addr:.*]] = fir.coordinate_of %[[b_cast]], %[[b_index]]
32    ! CHECK-DAG: %[[b_elt:.*]] = fir.load %[[b_addr]]
33    ! CHECK: %[[temp_cast2:.*]] = fir.convert %[[temp]]
34    ! CHECK: %[[temp_addr2:.*]] = fir.coordinate_of %[[temp_cast2]], %[[index2]]
35    ! CHECK: fir.store %[[b_elt]] to %[[temp_addr2]]
36  ! CHECK: }
37
38  ! IO runtime call
39  ! CHECK-DAG: %[[raddr:.*]] = fir.convert %[[temp]]
40  ! CHECK-DAG: %[[rlen:.*]] = fir.convert %[[len]]
41  ! CHECK: call @{{.*}}OutputAscii(%{{.*}}, %[[raddr]], %[[rlen]])
42end subroutine
43