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TheRock/compiler/amd-llvm/flang/test/Lower/goto-statement.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

67 lines
1.6 KiB
Fortran

! RUN: %flang_fc1 -emit-hlfir %s -o - | FileCheck %s
! Test trivial goto statement
subroutine sub1()
goto 1
1 stop
end subroutine
! CHECK-LABEL: func.func @_QPsub1() {
! CHECK: cf.br ^[[BB1:.*]]
! CHECK: ^[[BB1]]:
! CHECK: {{.*}} fir.call @_FortranAStopStatement({{.*}}, {{.*}}, {{.*}}) {{.*}}: (i32, i1, i1) -> ()
! CHECK: }
! Test multiple goto statements
subroutine sub2()
goto 1
1 goto 2
2 goto 3
3 stop
end subroutine
! CHECK-LABEL: func.func @_QPsub2() {
! CHECK: cf.br ^[[BB1:.*]]
! CHECK: ^[[BB1]]:
! CHECK: cf.br ^[[BB2:.*]]
! CHECK: ^[[BB2]]:
! CHECK: cf.br ^[[BB3:.*]]
! CHECK: ^[[BB3]]:
! CHECK: {{.*}} fir.call @_FortranAStopStatement({{.*}}, {{.*}}, {{.*}}) {{.*}}: (i32, i1, i1) -> ()
! CHECK: }
! Test goto which branches to a previous label
subroutine sub3()
pause
1 goto 3
2 stop
3 goto 2
end subroutine
! CHECK-LABEL: func.func @_QPsub3() {
! CHECK: {{.*}} fir.call @_FortranAPauseStatement() {{.*}}: () -> ()
! CHECK: cf.br ^[[BB2:.*]]
! CHECK: ^[[BB1:.*]]: //
! CHECK: {{.*}} fir.call @_FortranAStopStatement({{.*}}, {{.*}}, {{.*}}) {{.*}}: (i32, i1, i1) -> ()
! CHECK: ^[[BB2]]:
! CHECK: cf.br ^[[BB1]]
! CHECK: }
! Test removal of blocks (pauses) which are not reachable
subroutine sub4()
pause
1 goto 2
pause
2 goto 3
pause
3 goto 1
pause
end subroutine
! CHECK-LABEL: func.func @_QPsub4() {
! CHECK: {{.*}} fir.call @_FortranAPauseStatement() {{.*}}: () -> ()
! CHECK-NEXT: cf.br ^[[BB1:.*]]
! CHECK-NEXT: ^[[BB1]]:
! CHECK-NEXT: cf.br ^[[BB2:.*]]
! CHECK-NEXT: ^[[BB2]]:
! CHECK-NEXT: cf.br ^[[BB3:.*]]
! CHECK-NEXT: ^[[BB3]]:
! CHECK-NEXT: cf.br ^[[BB1]]
! CHECK-NEXT: }