llvm/test/Transforms/GVN/pr64598.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt -S -passes=gvn < %s | FileCheck %s

define i32 @main(i64 %x, ptr %d, ptr noalias %p) {
; CHECK-LABEL: define i32 @main(
; CHECK-SAME: i64 [[X:%.*]], ptr [[D:%.*]], ptr noalias [[P:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[T1_PRE_PRE_PRE:%.*]] = load ptr, ptr [[P]], align 8
; CHECK-NEXT:    [[T2_PRE_PRE_PRE:%.*]] = load ptr, ptr [[T1_PRE_PRE_PRE]], align 8, !tbaa [[ANYPTR_TBAA0:![0-9]+]]
; CHECK-NEXT:    [[T3_PRE_PRE_PRE:%.*]] = load ptr, ptr [[T2_PRE_PRE_PRE]], align 8
; CHECK-NEXT:    br label %[[LOOP:.*]]
; CHECK:       [[LOOP]]:
; CHECK-NEXT:    [[T2_PRE_PRE:%.*]] = phi ptr [ [[T2_PRE_PRE23:%.*]], %[[LOOP_LATCH:.*]] ], [ [[T2_PRE_PRE_PRE]], %[[ENTRY]] ]
; CHECK-NEXT:    [[T1_PRE_PRE:%.*]] = phi ptr [ [[T1_PRE_PRE19:%.*]], %[[LOOP_LATCH]] ], [ [[T1_PRE_PRE_PRE]], %[[ENTRY]] ]
; CHECK-NEXT:    br label %[[LOOP2:.*]]
; CHECK:       [[LOOP2]]:
; CHECK-NEXT:    [[T2_PRE_PRE25:%.*]] = phi ptr [ [[T2_PRE_PRE23]], %[[LOOP2_LATCH_LOOP2_CRIT_EDGE:.*]] ], [ [[T2_PRE_PRE]], %[[LOOP]] ]
; CHECK-NEXT:    [[T1_PRE_PRE21:%.*]] = phi ptr [ [[T1_PRE_PRE19]], %[[LOOP2_LATCH_LOOP2_CRIT_EDGE]] ], [ [[T1_PRE_PRE]], %[[LOOP]] ]
; CHECK-NEXT:    [[T3_PRE:%.*]] = phi ptr [ [[T3_PRE16:%.*]], %[[LOOP2_LATCH_LOOP2_CRIT_EDGE]] ], [ [[T3_PRE_PRE_PRE]], %[[LOOP]] ]
; CHECK-NEXT:    [[T2_PRE:%.*]] = phi ptr [ [[T2_PRE13:%.*]], %[[LOOP2_LATCH_LOOP2_CRIT_EDGE]] ], [ [[T2_PRE_PRE]], %[[LOOP]] ]
; CHECK-NEXT:    [[T1_PRE:%.*]] = phi ptr [ [[T1_PRE10:%.*]], %[[LOOP2_LATCH_LOOP2_CRIT_EDGE]] ], [ [[T1_PRE_PRE]], %[[LOOP]] ]
; CHECK-NEXT:    br label %[[LOOP3:.*]]
; CHECK:       [[LOOP3]]:
; CHECK-NEXT:    [[T2_PRE_PRE24:%.*]] = phi ptr [ [[T2_PRE_PRE23]], %[[LOOP3_LATCH:.*]] ], [ [[T2_PRE_PRE25]], %[[LOOP2]] ]
; CHECK-NEXT:    [[T1_PRE_PRE20:%.*]] = phi ptr [ [[T1_PRE_PRE19]], %[[LOOP3_LATCH]] ], [ [[T1_PRE_PRE21]], %[[LOOP2]] ]
; CHECK-NEXT:    [[T3_PRE17:%.*]] = phi ptr [ [[T3_PRE16]], %[[LOOP3_LATCH]] ], [ [[T3_PRE]], %[[LOOP2]] ]
; CHECK-NEXT:    [[T2_PRE14:%.*]] = phi ptr [ [[T2_PRE13]], %[[LOOP3_LATCH]] ], [ [[T2_PRE]], %[[LOOP2]] ]
; CHECK-NEXT:    [[T1_PRE11:%.*]] = phi ptr [ [[T1_PRE10]], %[[LOOP3_LATCH]] ], [ [[T1_PRE]], %[[LOOP2]] ]
; CHECK-NEXT:    [[T78:%.*]] = phi ptr [ [[T7:%.*]], %[[LOOP3_LATCH]] ], [ [[T3_PRE]], %[[LOOP2]] ]
; CHECK-NEXT:    [[T66:%.*]] = phi ptr [ [[T6:%.*]], %[[LOOP3_LATCH]] ], [ [[T2_PRE]], %[[LOOP2]] ]
; CHECK-NEXT:    [[T54:%.*]] = phi ptr [ [[T5:%.*]], %[[LOOP3_LATCH]] ], [ [[T1_PRE]], %[[LOOP2]] ]
; CHECK-NEXT:    [[TOBOOL_NOT2_I:%.*]] = icmp eq i64 [[X]], 0
; CHECK-NEXT:    br i1 false, label %[[LOOP3_LOOP3_LATCH_CRIT_EDGE:.*]], label %[[FOR_BODY_LR_PH_I:.*]]
; CHECK:       [[LOOP3_LOOP3_LATCH_CRIT_EDGE]]:
; CHECK-NEXT:    br label %[[LOOP3_LATCH]]
; CHECK:       [[FOR_BODY_LR_PH_I]]:
; CHECK-NEXT:    store i32 0, ptr [[P]], align 4
; CHECK-NEXT:    [[T5_PRE:%.*]] = load ptr, ptr [[P]], align 8
; CHECK-NEXT:    [[T6_PRE:%.*]] = load ptr, ptr [[T5_PRE]], align 8, !tbaa [[ANYPTR_TBAA0]]
; CHECK-NEXT:    [[T7_PRE:%.*]] = load ptr, ptr [[T6_PRE]], align 8
; CHECK-NEXT:    br label %[[LOOP3_LATCH]]
; CHECK:       [[LOOP3_LATCH]]:
; CHECK-NEXT:    [[T2_PRE_PRE23]] = phi ptr [ [[T2_PRE_PRE24]], %[[LOOP3_LOOP3_LATCH_CRIT_EDGE]] ], [ [[T6_PRE]], %[[FOR_BODY_LR_PH_I]] ]
; CHECK-NEXT:    [[T1_PRE_PRE19]] = phi ptr [ [[T1_PRE_PRE20]], %[[LOOP3_LOOP3_LATCH_CRIT_EDGE]] ], [ [[T5_PRE]], %[[FOR_BODY_LR_PH_I]] ]
; CHECK-NEXT:    [[T3_PRE16]] = phi ptr [ [[T3_PRE17]], %[[LOOP3_LOOP3_LATCH_CRIT_EDGE]] ], [ [[T7_PRE]], %[[FOR_BODY_LR_PH_I]] ]
; CHECK-NEXT:    [[T2_PRE13]] = phi ptr [ [[T2_PRE14]], %[[LOOP3_LOOP3_LATCH_CRIT_EDGE]] ], [ [[T6_PRE]], %[[FOR_BODY_LR_PH_I]] ]
; CHECK-NEXT:    [[T1_PRE10]] = phi ptr [ [[T1_PRE11]], %[[LOOP3_LOOP3_LATCH_CRIT_EDGE]] ], [ [[T5_PRE]], %[[FOR_BODY_LR_PH_I]] ]
; CHECK-NEXT:    [[T7]] = phi ptr [ [[T78]], %[[LOOP3_LOOP3_LATCH_CRIT_EDGE]] ], [ [[T7_PRE]], %[[FOR_BODY_LR_PH_I]] ]
; CHECK-NEXT:    [[T6]] = phi ptr [ [[T66]], %[[LOOP3_LOOP3_LATCH_CRIT_EDGE]] ], [ [[T6_PRE]], %[[FOR_BODY_LR_PH_I]] ]
; CHECK-NEXT:    [[T5]] = phi ptr [ [[T54]], %[[LOOP3_LOOP3_LATCH_CRIT_EDGE]] ], [ [[T5_PRE]], %[[FOR_BODY_LR_PH_I]] ]
; CHECK-NEXT:    br i1 false, label %[[LOOP2_LATCH:.*]], label %[[LOOP3]]
; CHECK:       [[LOOP2_LATCH]]:
; CHECK-NEXT:    br i1 false, label %[[LOOP2_LATCH_LOOP2_CRIT_EDGE]], label %[[LOOP_LATCH]]
; CHECK:       [[LOOP2_LATCH_LOOP2_CRIT_EDGE]]:
; CHECK-NEXT:    br label %[[LOOP2]]
; CHECK:       [[LOOP_LATCH]]:
; CHECK-NEXT:    store i32 0, ptr [[D]], align 4, !tbaa [[INT_TBAA4:![0-9]+]]
; CHECK-NEXT:    br label %[[LOOP]]
;
entry:
  br label %loop

loop:
  br label %loop2

loop2:
  br label %loop3

loop3:
  %t1 = load ptr, ptr %p, align 8
  %t2 = load ptr, ptr %t1, align 8, !tbaa !0
  %t3 = load ptr, ptr %t2, align 8
  %t4 = load i8, ptr %t3, align 1
  %tobool.not2.i = icmp eq i64 %x, 0
  br i1 false, label %loop3.latch, label %for.body.lr.ph.i

for.body.lr.ph.i:
  store i32 0, ptr %p, align 4
  br label %w.exit.loopexit

w.exit.loopexit:
  br label %loop3.latch

loop3.latch:
  %t5 = load ptr, ptr %p, align 8
  %t6 = load ptr, ptr %t5, align 8, !tbaa !0
  %t7 = load ptr, ptr %t6, align 8
  br i1 false, label %loop2.latch, label %loop3

loop2.latch:
  br i1 false, label %loop2, label %loop.latch

loop.latch:
  store i32 0, ptr %d, align 4, !tbaa !4
  br label %loop
}

!0 = !{!1, !1, i64 0}
!1 = !{!"any pointer", !2, i64 0}
!2 = !{!"omnipotent char", !3, i64 0}
!3 = !{!"Simple C/C++ TBAA"}
!4 = !{!5, !5, i64 0}
!5 = !{!"int", !2, i64 0}
;.
; CHECK: [[ANYPTR_TBAA0]] = !{[[META1:![0-9]+]], [[META1]], i64 0}
; CHECK: [[META1]] = !{!"any pointer", [[META2:![0-9]+]], i64 0}
; CHECK: [[META2]] = !{!"omnipotent char", [[META3:![0-9]+]], i64 0}
; CHECK: [[META3]] = !{!"Simple C/C++ TBAA"}
; CHECK: [[INT_TBAA4]] = !{[[META5:![0-9]+]], [[META5]], i64 0}
; CHECK: [[META5]] = !{!"int", [[META2]], i64 0}
;.