llvm/test/Transforms/LoopVersioning/crash-36998.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -passes=loop-versioning -aa-pipeline='' -S < %s | FileCheck %s

@a = external global i16, align 1
@b = external global i16, align 1
@c = external global i16, align 1

define i16 @f2(i16 %a) {
; CHECK-LABEL: define i16 @f2(
; CHECK-SAME: i16 [[A:%.*]]) {
; CHECK-NEXT:  [[FOR_BODY_LVER_CHECK:.*:]]
; CHECK-NEXT:    [[BOUND0:%.*]] = icmp ult ptr @b, getelementptr inbounds nuw (i8, ptr @a, i64 2)
; CHECK-NEXT:    [[BOUND1:%.*]] = icmp ult ptr @a, getelementptr inbounds nuw (i8, ptr @b, i64 2)
; CHECK-NEXT:    [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]]
; CHECK-NEXT:    br i1 [[FOUND_CONFLICT]], label %[[FOR_BODY_PH_LVER_ORIG:.*]], label %[[FOR_BODY_PH:.*]]
; CHECK:       [[FOR_BODY_PH_LVER_ORIG]]:
; CHECK-NEXT:    br label %[[FOR_BODY_LVER_ORIG:.*]]
; CHECK:       [[FOR_BODY_LVER_ORIG]]:
; CHECK-NEXT:    [[TMP0:%.*]] = load i16, ptr @a, align 1
; CHECK-NEXT:    store i16 [[TMP0]], ptr @b, align 1
; CHECK-NEXT:    [[INC_LVER_ORIG:%.*]] = add nsw i16 [[A]], 1
; CHECK-NEXT:    br i1 false, label %[[FOR_BODY_LVER_ORIG]], label %[[FOR_COND_FOR_END_CRIT_EDGE_LOOPEXIT:.*]]
; CHECK:       [[FOR_BODY_PH]]:
; CHECK-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK:       [[FOR_BODY]]:
; CHECK-NEXT:    [[TMP1:%.*]] = load i16, ptr @a, align 1, !alias.scope [[META0:![0-9]+]]
; CHECK-NEXT:    store i16 [[TMP1]], ptr @b, align 1, !alias.scope [[META3:![0-9]+]], !noalias [[META0]]
; CHECK-NEXT:    [[INC:%.*]] = add nsw i16 [[A]], 1
; CHECK-NEXT:    br i1 false, label %[[FOR_BODY]], label %[[FOR_COND_FOR_END_CRIT_EDGE_LOOPEXIT1:.*]]
; CHECK:       [[FOR_COND_FOR_END_CRIT_EDGE_LOOPEXIT]]:
; CHECK-NEXT:    [[INC_LCSSA_PH:%.*]] = phi i16 [ [[INC_LVER_ORIG]], %[[FOR_BODY_LVER_ORIG]] ]
; CHECK-NEXT:    [[SPLIT2_PH:%.*]] = phi i16 [ [[INC_LVER_ORIG]], %[[FOR_BODY_LVER_ORIG]] ]
; CHECK-NEXT:    br label %[[FOR_COND_FOR_END_CRIT_EDGE:.*]]
; CHECK:       [[FOR_COND_FOR_END_CRIT_EDGE_LOOPEXIT1]]:
; CHECK-NEXT:    [[INC_LCSSA_PH2:%.*]] = phi i16 [ [[INC]], %[[FOR_BODY]] ]
; CHECK-NEXT:    [[SPLIT2_PH3:%.*]] = phi i16 [ [[INC]], %[[FOR_BODY]] ]
; CHECK-NEXT:    br label %[[FOR_COND_FOR_END_CRIT_EDGE]]
; CHECK:       [[FOR_COND_FOR_END_CRIT_EDGE]]:
; CHECK-NEXT:    [[INC_LCSSA:%.*]] = phi i16 [ [[INC_LCSSA_PH]], %[[FOR_COND_FOR_END_CRIT_EDGE_LOOPEXIT]] ], [ [[INC_LCSSA_PH2]], %[[FOR_COND_FOR_END_CRIT_EDGE_LOOPEXIT1]] ]
; CHECK-NEXT:    [[SPLIT2:%.*]] = phi i16 [ [[SPLIT2_PH]], %[[FOR_COND_FOR_END_CRIT_EDGE_LOOPEXIT]] ], [ [[SPLIT2_PH3]], %[[FOR_COND_FOR_END_CRIT_EDGE_LOOPEXIT1]] ]
; CHECK-NEXT:    store i16 [[INC_LCSSA]], ptr @c, align 1
; CHECK-NEXT:    ret i16 [[SPLIT2]]
;
entry:
  br label %for.body

for.body:                                         ; preds = %for.body, %entry
  %0 = load i16, ptr @a, align 1
  store i16 %0, ptr @b, align 1
  %inc = add nsw i16 %a, 1
  br i1 false, label %for.body, label %for.cond.for.end_crit_edge

for.cond.for.end_crit_edge:                       ; preds = %for.body
  %split2 = phi i16 [ %inc, %for.body ]
  store i16 %inc, ptr @c, align 1
  ret i16 %split2
}
;.
; CHECK: [[META0]] = !{[[META1:![0-9]+]]}
; CHECK: [[META1]] = distinct !{[[META1]], [[META2:![0-9]+]]}
; CHECK: [[META2]] = distinct !{[[META2]], i1 false, !"LVerDomain"}
; CHECK: [[META3]] = !{[[META4:![0-9]+]]}
; CHECK: [[META4]] = distinct !{[[META4]], [[META2]]}
;.