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TheRock/compiler/amd-llvm/flang/test/Lower/HLFIR/elemental-result-length-len-folding.f90
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55 lines
1.8 KiB
Fortran

! RUN: %flang_fc1 -emit-hlfir -o - %s | FileCheck %s
! Test that LEN intrinsic in elemental function result specification expression
! is lowered efficiently in HLFIR, especially when it involves expressions
! like concatenation that can be folded or handled without materialization.
elemental function add_suffix(str) result(res)
character(len=*), intent(in) :: str
character(len=len(str // "abc")) :: res
res = str // "xyz"
end function
! CHECK-LABEL: func.func @_QPadd_suffix(
! CHECK: hlfir.declare {{.*}} "_QFadd_suffixEstr"
! CHECK-NOT: hlfir.concat
! CHECK: hlfir.declare {{.*}} "_QFadd_suffixEres"
! CHECK: hlfir.concat
! CHECK: hlfir.assign
subroutine test_call(s, r)
character(*), intent(in) :: s(:)
character(*), intent(out) :: r(:)
interface
elemental function add_suffix(str) result(res)
character(len=*), intent(in) :: str
character(len=len(str // "abc")) :: res
end function
end interface
r = add_suffix(s)
end subroutine
! CHECK-LABEL: func.func @_QPtest_call(
! CHECK: hlfir.declare {{.*}} "_QFtest_callEs"
! CHECK-NOT: hlfir.concat
! CHECK: hlfir.elemental {{.*}} {
! CHECK: hlfir.designate
! CHECK: fir.alloca
! CHECK: hlfir.declare
! CHECK: fir.call @_QPadd_suffix
! CHECK: }
subroutine test_trim(s, n)
character(*) :: s
integer :: n
n = len(trim(s))
end subroutine
! CHECK-LABEL: func.func @_QPtest_trim(
! CHECK: hlfir.declare {{.*}} "_QFtest_trimEs"
! CHECK: %[[TRIM:.*]] = hlfir.char_trim
! CHECK-NEXT: %[[LEN:.*]] = hlfir.get_length %[[TRIM]]
! CHECK-NEXT: %[[LEN_I32:.*]] = fir.convert %[[LEN]] : (index) -> i32
! CHECK-NEXT: hlfir.assign %[[LEN_I32]] to {{.*}}
! CHECK-NEXT: hlfir.destroy %[[TRIM]]