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TheRock/compiler/amd-llvm/flang/test/Lower/read-write-buffer.f90
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

38 lines
1.7 KiB
Fortran

! RUN: %flang_fc1 -emit-hlfir %s -o - | FileCheck %s
! Test that we are passing the correct length when using character array as
! Format (Fortran 2018 12.6.2.2 point 3)
! CHECK-LABEL: func @_QPtest_array_format
subroutine test_array_format
! CHECK-DAG: %[[c10:.*]] = arith.constant 10 : index
! CHECK-DAG: %[[c2:.*]] = arith.constant 2 : index
! CHECK-DAG: %[[mem:.*]] = fir.alloca !fir.array<2x!fir.char<1,10>>
! CHECK: %[[shape0:.*]] = fir.shape %[[c2]] : (index) -> !fir.shape<1>
! CHECK: %[[arr:.*]]:2 = hlfir.declare %[[mem]](%[[shape0]]) typeparams %[[c10]]
character(10) :: array(2)
array(1) ="(15HThis i"
array(2) ="s a test.)"
! CHECK: %[[shape:.*]] = fir.shape %c2{{.*}} : (index) -> !fir.shape<1>
! CHECK: %[[fmtBox:.*]] = fir.embox %[[arr]]#0(%[[shape]]) : (!fir.ref<!fir.array<2x!fir.char<1,10>>>, !fir.shape<1>) -> !fir.box<!fir.array<2x!fir.char<1,10>>>
! CHECK: %[[fmtArg:.*]] = fir.zero_bits !fir.ref<i8>
! CHECK: %[[fmtLenArg:.*]] = fir.zero_bits i64
! CHECK: %[[fmtDesc:.*]] = fir.convert %[[fmtBox]] : (!fir.box<!fir.array<2x!fir.char<1,10>>>) -> !fir.box<none>
! CHECK: fir.call @_FortranAioBeginExternalFormattedOutput(%[[fmtArg]], %[[fmtLenArg]], %[[fmtDesc]], {{.*}})
write(*, array)
end subroutine
! A test to check the buffer and it's length.
! CHECK-LABEL: @_QPsome
subroutine some()
character(LEN=255):: buffer
character(LEN=255):: greeting
10 format (A255)
! CHECK: fir.address_of(@_QQclX636F6D70696C6572) :
write (buffer, 10) "compiler"
read (buffer, 10) greeting
end
! CHECK-LABEL: fir.global linkonce @_QQclX636F6D70696C6572
! CHECK: %[[lit:.*]] = fir.string_lit "compiler"(8) : !fir.char<1,8>
! CHECK: fir.has_value %[[lit]] : !fir.char<1,8>
! CHECK: }