flang/test/Lower/goto-do-body.f90

   1 ! RUN: bbc %s -emit-fir -hlfir=false -o - | FileCheck %s
   2
   3 ! Test jumping to the body of a do loop.
   4 subroutine sub1()
   5 ! CHECK-LABEL:  func @_QPsub1() {
   6   implicit none
   7   integer :: i
   8   external foo
   9 ! CHECK:    %[[TRIP:.*]] = fir.alloca i32
  10 ! CHECK:    %[[I:.*]] = fir.alloca i32 {bindc_name = "i", {{.*}}}
  11
  12   do i = 1, 3
  13     if (i .eq. 2) goto 70
  14 ! CHECK:    %[[TMP1:.*]] = fir.load %[[I]] : !fir.ref<i32>
  15 ! CHECK:    %[[C2_1:.*]] = arith.constant 2 : i32
  16 ! CHECK:    %[[COND:.*]] = arith.cmpi eq, %[[TMP1]], %[[C2_1]] : i32
  17 ! CHECK:    cf.cond_br %[[COND]], ^[[COND_TRUE:.*]], ^{{.*}}
  18 ! CHECK:  ^[[COND_TRUE]]:
  19 ! CHECK:    cf.br ^[[BODY:.*]]
  20
  21   end do
  22
  23   call foo
  24 ! CHECK:  fir.call @_QPfoo()
  25
  26   do i = 1, 2
  27 ! CHECK:    %[[C1_1:.*]] = arith.constant 1 : i32
  28 ! CHECK:    %[[C2_2:.*]] = arith.constant 2 : i32
  29 ! CHECK:    %[[C1_2:.*]] = arith.constant 1 : i32
  30 ! CHECK:    %[[TMP2:.*]] = arith.subi %[[C2_2]], %[[C1_1]] : i32
  31 ! CHECK:    %[[TMP3:.*]] = arith.addi %[[TMP2]], %[[C1_2]] : i32
  32 ! CHECK:    %[[TMP4:.*]] = arith.divsi %[[TMP3]], %[[C1_2]] : i32
  33 ! CHECK:    fir.store %[[TMP4]] to %[[TRIP]] : !fir.ref<i32>
  34 ! CHECK:    fir.store %[[C1_1]] to %[[I]] : !fir.ref<i32>
  35 ! CHECK:    cf.br ^[[HEADER:.*]]
  36 ! CHECK:  ^[[HEADER]]:
  37 ! CHECK:    %[[TMP5:.*]] = fir.load %[[TRIP]] : !fir.ref<i32>
  38 ! CHECK:    %[[C0_1:.*]] = arith.constant 0 : i32
  39 ! CHECK:    %[[TMP6:.*]] = arith.cmpi sgt, %[[TMP5]], %[[C0_1]] : i32
  40 ! CHECK:    cf.cond_br %[[TMP6]], ^[[BODY]], ^[[EXIT:.*]]
  41
  42     70 call foo
  43 ! CHECK:  ^[[BODY]]:
  44 ! CHECK:    fir.call @_QPfoo()
  45 ! CHECK:    %[[TMP7:.*]] = fir.load %[[TRIP]] : !fir.ref<i32>
  46 ! CHECK:    %[[C1_3:.*]] = arith.constant 1 : i32
  47 ! CHECK:    %[[TMP8:.*]] = arith.subi %[[TMP7]], %[[C1_3]] : i32
  48 ! CHECK:    fir.store %[[TMP8]] to %[[TRIP]] : !fir.ref<i32>
  49 ! CHECK:    %[[TMP9:.*]] = fir.load %[[I]] : !fir.ref<i32>
  50 ! CHECK:    %[[C1_4:.*]] = arith.constant 1 : i32
  51 ! CHECK:    %[[TMP10:.*]] = arith.addi %[[TMP9]], %[[C1_4]] : i32
  52 ! CHECK:    fir.store %[[TMP10]] to %[[I]] : !fir.ref<i32>
  53 ! CHECK:    cf.br ^[[HEADER]]
  54   end do
  55 end subroutine
  56 ! CHECK: ^[[EXIT]]:
  57 ! CHECK:    return
  58 ! CHECK:  }
  59
  60 ! Test jumping to the body of a do loop with a step expression.
  61 subroutine sub2()
  62 ! CHECK-LABEL:  func @_QPsub2() {
  63   implicit none
  64   integer :: i, j
  65   external foo
  66 ! CHECK:    %[[TRIP:.*]] = fir.alloca i32
  67 ! CHECK:    %[[I:.*]] = fir.alloca i32 {bindc_name = "i", {{.*}}}
  68 ! CHECK:    %[[J:.*]] = fir.alloca i32 {bindc_name = "j", {{.*}}}
  69
  70   do i = 1, 3
  71     if (i .eq. 2) goto 70
  72 ! CHECK:    %[[TMP1:.*]] = fir.load %[[I]] : !fir.ref<i32>
  73 ! CHECK:    %[[C2_1:.*]] = arith.constant 2 : i32
  74 ! CHECK:    %[[COND:.*]] = arith.cmpi eq, %[[TMP1]], %[[C2_1]] : i32
  75 ! CHECK:    cf.cond_br %[[COND]], ^[[COND_TRUE:.*]], ^{{.*}}
  76 ! CHECK:  ^[[COND_TRUE]]:
  77 ! CHECK:    cf.br ^[[BODY:.*]]
  78
  79   end do
  80
  81   call foo
  82 ! CHECK:    fir.call @_QPfoo()
  83
  84   j = 3
  85 ! CHECK:    %[[C3_1:.*]] = arith.constant 3 : i32
  86 ! CHECK:    fir.store %[[C3_1]] to %[[J]] : !fir.ref<i32>
  87
  88   do i = 1, 2, 3 * j - 8
  89 ! CHECK:    %[[C1_1:.*]] = arith.constant 1 : i32
  90 ! CHECK:    %[[C2_2:.*]] = arith.constant 2 : i32
  91 ! CHECK:    %[[C3_2:.*]] = arith.constant 3 : i32
  92 ! CHECK:    %[[TMP2:.*]] = fir.load %[[J]] : !fir.ref<i32>
  93 ! CHECK:    %[[TMP3:.*]] = arith.muli %[[C3_2]], %[[TMP2]] overflow<nsw> : i32
  94 ! CHECK:    %[[C8_1:.*]] = arith.constant 8 : i32
  95 ! CHECK:    %[[STEP:.*]] = arith.subi %[[TMP3]], %[[C8_1]] overflow<nsw> : i32
  96 ! CHECK:    fir.store %[[STEP]] to %[[STEP_VAR:.*]] : !fir.ref<i32>
  97 ! CHECK:    %[[TMP4:.*]] = arith.subi %[[C2_2]], %[[C1_1]] : i32
  98 ! CHECK:    %[[TMP5:.*]] = arith.addi %[[TMP4]], %[[STEP]] : i32
  99 ! CHECK:    %[[TMP6:.*]] = arith.divsi %[[TMP5]], %[[STEP]] : i32
 100 ! CHECK:    fir.store %[[TMP6]] to %[[TRIP]] : !fir.ref<i32>
 101 ! CHECK:    fir.store %[[C1_1]] to %[[I]] : !fir.ref<i32>
 102 ! CHECK:    cf.br ^[[HEADER:.*]]
 103 ! CHECK:  ^[[HEADER]]:
 104 ! CHECK:    %[[TMP7:.*]] = fir.load %[[TRIP]] : !fir.ref<i32>
 105 ! CHECK:    %[[C0_1:.*]] = arith.constant 0 : i32
 106 ! CHECK:    %[[TMP8:.*]] = arith.cmpi sgt, %[[TMP7]], %[[C0_1]] : i32
 107 ! CHECK:    cf.cond_br %[[TMP8]], ^[[BODY]], ^[[EXIT:.*]]
 108
 109     70 call foo
 110 ! CHECK:  ^[[BODY]]:
 111 ! CHECK:    fir.call @_QPfoo()
 112 ! CHECK:    %[[TMP9:.*]] = fir.load %[[TRIP]] : !fir.ref<i32>
 113 ! CHECK:    %[[C1_2:.*]] = arith.constant 1 : i32
 114 ! CHECK:    %[[TMP10:.*]] = arith.subi %[[TMP9]], %[[C1_2]] : i32
 115 ! CHECK:    fir.store %[[TMP10]] to %[[TRIP]] : !fir.ref<i32>
 116 ! CHECK:    %[[TMP11:.*]] = fir.load %[[I]] : !fir.ref<i32>
 117 ! CHECK:    %[[STEP_VAL:.*]] = fir.load %[[STEP_VAR]] : !fir.ref<i32>
 118 ! CHECK:    %[[TMP12:.*]] = arith.addi %[[TMP11]], %[[STEP_VAL]] : i32
 119 ! CHECK:    fir.store %[[TMP12]] to %[[I]] : !fir.ref<i32>
 120 ! CHECK:    cf.br ^[[HEADER]]
 121   end do
 122 end subroutine
 123 ! CHECK: ^[[EXIT]]:
 124 ! CHECK:    return
 125 ! CHECK:  }