flang/test/Lower/read-write-buffer.f90

   1 ! RUN: bbc -emit-fir %s -o - | FileCheck %s
   2
   3 ! Test that we are passing the correct length when using character array as
   4 ! Format (Fortran 2018 12.6.2.2 point 3)
   5 ! CHECK-LABEL: func @_QPtest_array_format
   6 subroutine test_array_format
   7   ! CHECK-DAG: %[[c2:.*]] = arith.constant 2 : index
   8   ! CHECK-DAG: %[[c10:.*]] = arith.constant 10 : index
   9   ! CHECK-DAG: %[[mem:.*]] = fir.alloca !fir.array<2x!fir.char<1,10>>
  10   character(10) :: array(2)
  11   array(1) ="(15HThis i"
  12   array(2) ="s a test.)"
  13   ! CHECK: %[[shape:.*]] = fir.shape %c2{{.*}} (index) -> !fir.shape<1>
  14   ! CHECK: %[[fmtBox:.*]] = fir.embox %[[mem]](%[[shape]]) : (!fir.ref<!fir.array<2x!fir.char<1,10>>>, !fir.shape<1>) -> !fir.box<!fir.array<2x!fir.char<1,10>>>
  15   ! CHECK: %[[fmtArg:.*]] = fir.zero_bits !fir.ref<i8>
  16   ! CHECK: %[[fmtLenArg:.*]] = fir.zero_bits i64
  17   ! CHECK: %[[fmtDesc:.*]] = fir.convert %[[fmtBox]] : (!fir.box<!fir.array<2x!fir.char<1,10>>>) -> !fir.box<none>
  18   ! CHECK: fir.call @_FortranAioBeginExternalFormattedOutput(%[[fmtArg]], %[[fmtLenArg]], %[[fmtDesc]], {{.*}})
  19   write(*, array)
  20 end subroutine
  21
  22 ! A test to check the buffer and it's length.
  23 ! CHECK-LABEL: @_QPsome
  24 subroutine some()
  25   character(LEN=255):: buffer
  26   character(LEN=255):: greeting
  27 10 format (A255)
  28   ! CHECK:  fir.address_of(@_QQcl.636F6D70696C6572) :
  29   write (buffer, 10) "compiler"
  30   read (buffer, 10) greeting
  31 end
  32 ! CHECK-LABEL: fir.global linkonce @_QQcl.636F6D70696C6572
  33 ! CHECK: %[[lit:.*]] = fir.string_lit "compiler"(8) : !fir.char<1,8>
  34 ! CHECK: fir.has_value %[[lit]] : !fir.char<1,8>
  35 ! CHECK: }