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127 lines
2.9 KiB
Fortran
127 lines
2.9 KiB
Fortran
! RUN: %flang_fc1 -fsafe-trampoline -emit-llvm -o - %s | FileCheck %s
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!
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! Test that -fsafe-trampoline generates calls to the runtime
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! trampoline pool instead of stack-based trampolines.
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!
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! Test cases cover trampolines at the top-level block, used inside an IF block,
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! and used inside a DO loop.
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! CHECK-LABEL: define {{.*}}@host_
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! CHECK: call {{.*}}@_FortranATrampolineInit
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! CHECK: call {{.*}}@_FortranATrampolineAdjust
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! CHECK: call {{.*}}@_FortranATrampolineFree
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! CHECK-LABEL: define {{.*}}@host_in_if_
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! CHECK: call {{.*}}@_FortranATrampolineInit
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! CHECK: call {{.*}}@_FortranATrampolineAdjust
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! CHECK: call {{.*}}@_FortranATrampolineFree
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! CHECK-LABEL: define {{.*}}@host_in_do_loop_
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! CHECK: call {{.*}}@_FortranATrampolineInit
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! CHECK: call {{.*}}@_FortranATrampolineAdjust
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! CHECK: call {{.*}}@_FortranATrampolineFree
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! CHECK-LABEL: define {{.*}}@host_branch_
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! CHECK: call {{.*}}@_FortranATrampolineInit
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! CHECK: call {{.*}}@_FortranATrampolineAdjust
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! CHECK: call {{.*}}@_FortranATrampolineFree
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module other
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abstract interface
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function callback()
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integer :: callback
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end function callback
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end interface
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contains
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subroutine foo(fptr)
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procedure(callback), pointer :: fptr
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print *, fptr()
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end subroutine foo
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subroutine bar(fproc)
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procedure(callback) :: fproc
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print *, fproc()
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end subroutine bar
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end module other
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! Test 1: trampoline at top-level block (baseline).
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subroutine host(local)
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use other
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integer :: local
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procedure(callback), pointer :: fptr
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fptr => callee
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call foo(fptr)
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return
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contains
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function callee()
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integer :: callee
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callee = local
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end function callee
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end subroutine host
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! Test 2: trampoline used inside an IF block.
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subroutine host_in_if(local, flag)
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use other
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integer :: local
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logical :: flag
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procedure(callback), pointer :: fptr
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fptr => callee
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if (flag) then
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call foo(fptr)
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end if
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return
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contains
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function callee()
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integer :: callee
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callee = local
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end function callee
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end subroutine host_in_if
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! Test 3: trampoline used inside a DO loop.
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subroutine host_in_do_loop(local, n)
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use other
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integer :: local
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integer :: n
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integer :: i
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procedure(callback), pointer :: fptr
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fptr => callee
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do i = 1, n
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call foo(fptr)
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end do
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return
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contains
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function callee()
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integer :: callee
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callee = local + i
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end function callee
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end subroutine host_in_do_loop
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! Test 4: emboxproc generated inside a branch (internal procedure passed
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! directly as actual argument inside an IF block).
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subroutine host_branch(local, flag)
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use other
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integer :: local
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logical :: flag
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if (flag) call bar(callee)
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return
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contains
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function callee()
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integer :: callee
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callee = local
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end function callee
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end subroutine host_branch
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program main
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call host(10)
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call host_in_if(20, .true.)
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call host_in_do_loop(30, 3)
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call host_branch(40, .true.)
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end program main
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