llvm/test/Transforms/LoopVersioning/incorrect-phi.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 --check-globals none
; RUN: opt -passes=loop-versioning -S < %s | FileCheck %s

; Make sure all PHIs are properly updated in the exit block.  Based on
; PR28037.

@x = external global [2 x [3 x [5 x i16]]]

define void @phi_with_poison() {
; CHECK-LABEL: define void @phi_with_poison() {
; CHECK-NEXT:  [[BB6_LVER_CHECK:.*:]]
; CHECK-NEXT:    br i1 poison, label %[[BB6_PH_LVER_ORIG:.*]], label %[[BB6_PH:.*]]
; CHECK:       [[BB6_PH_LVER_ORIG]]:
; CHECK-NEXT:    br label %[[BB6_LVER_ORIG:.*]]
; CHECK:       [[BB6_LVER_ORIG]]:
; CHECK-NEXT:    [[_TMP1423_LVER_ORIG:%.*]] = phi i64 [ poison, %[[BB6_PH_LVER_ORIG]] ], [ [[_TMP142_LVER_ORIG:%.*]], %[[BB6_LVER_ORIG]] ]
; CHECK-NEXT:    [[_TMP123_LVER_ORIG:%.*]] = getelementptr [2 x [3 x [5 x i16]]], ptr @x, i16 0, i64 poison
; CHECK-NEXT:    [[_TMP126_LVER_ORIG:%.*]] = getelementptr [3 x [5 x i16]], ptr [[_TMP123_LVER_ORIG]], i16 0, i64 [[_TMP1423_LVER_ORIG]]
; CHECK-NEXT:    [[_TMP129_LVER_ORIG:%.*]] = getelementptr [5 x i16], ptr [[_TMP126_LVER_ORIG]], i16 0, i64 poison
; CHECK-NEXT:    [[_TMP130_LVER_ORIG:%.*]] = load i16, ptr [[_TMP129_LVER_ORIG]], align 2
; CHECK-NEXT:    store i16 poison, ptr @x, align 2
; CHECK-NEXT:    [[_TMP142_LVER_ORIG]] = add i64 [[_TMP1423_LVER_ORIG]], 1
; CHECK-NEXT:    br i1 false, label %[[BB6_LVER_ORIG]], label %[[LOOP_EXIT_LOOPEXIT:.*]]
; CHECK:       [[BB6_PH]]:
; CHECK-NEXT:    br label %[[BB6:.*]]
; CHECK:       [[BB6]]:
; CHECK-NEXT:    [[_TMP1423:%.*]] = phi i64 [ poison, %[[BB6_PH]] ], [ [[_TMP142:%.*]], %[[BB6]] ]
; CHECK-NEXT:    [[_TMP123:%.*]] = getelementptr [2 x [3 x [5 x i16]]], ptr @x, i16 0, i64 poison
; CHECK-NEXT:    [[_TMP126:%.*]] = getelementptr [3 x [5 x i16]], ptr [[_TMP123]], i16 0, i64 [[_TMP1423]]
; CHECK-NEXT:    [[_TMP129:%.*]] = getelementptr [5 x i16], ptr [[_TMP126]], i16 0, i64 poison
; CHECK-NEXT:    [[_TMP130:%.*]] = load i16, ptr [[_TMP129]], align 2, !alias.scope [[META0:![0-9]+]]
; CHECK-NEXT:    store i16 poison, ptr @x, align 2, !alias.scope [[META3:![0-9]+]]
; CHECK-NEXT:    [[_TMP142]] = add i64 [[_TMP1423]], 1
; CHECK-NEXT:    br i1 false, label %[[BB6]], label %[[LOOP_EXIT_LOOPEXIT1:.*]]
; CHECK:       [[LOOP_EXIT_LOOPEXIT]]:
; CHECK-NEXT:    [[_TMP142_LCSSA_PH:%.*]] = phi i64 [ [[_TMP142_LVER_ORIG]], %[[BB6_LVER_ORIG]] ]
; CHECK-NEXT:    [[SPLIT_PH:%.*]] = phi i16 [ poison, %[[BB6_LVER_ORIG]] ]
; CHECK-NEXT:    br label %[[LOOP_EXIT:.*]]
; CHECK:       [[LOOP_EXIT_LOOPEXIT1]]:
; CHECK-NEXT:    [[_TMP142_LCSSA_PH2:%.*]] = phi i64 [ [[_TMP142]], %[[BB6]] ]
; CHECK-NEXT:    [[SPLIT_PH3:%.*]] = phi i16 [ poison, %[[BB6]] ]
; CHECK-NEXT:    br label %[[LOOP_EXIT]]
; CHECK:       [[LOOP_EXIT]]:
; CHECK-NEXT:    [[_TMP142_LCSSA:%.*]] = phi i64 [ [[_TMP142_LCSSA_PH]], %[[LOOP_EXIT_LOOPEXIT]] ], [ [[_TMP142_LCSSA_PH2]], %[[LOOP_EXIT_LOOPEXIT1]] ]
; CHECK-NEXT:    [[SPLIT:%.*]] = phi i16 [ [[SPLIT_PH]], %[[LOOP_EXIT_LOOPEXIT]] ], [ [[SPLIT_PH3]], %[[LOOP_EXIT_LOOPEXIT1]] ]
; CHECK-NEXT:    br label %[[BB9:.*]]
; CHECK:       [[BB9]]:
; CHECK-NEXT:    ret void
;
bb6.lr.ph:                                        ; preds = %bb5.preheader
  br label %bb6

bb6:                                              ; preds = %bb6.lr.ph, %bb6
  %_tmp1423 = phi i64 [ poison, %bb6.lr.ph ], [ %_tmp142, %bb6 ]
  %_tmp123 = getelementptr [2 x [3 x [5 x i16]]], ptr @x, i16 0, i64 poison
  %_tmp126 = getelementptr [3 x [5 x i16]], ptr %_tmp123, i16 0, i64 %_tmp1423
  %_tmp129 = getelementptr [5 x i16], ptr %_tmp126, i16 0, i64 poison
  %_tmp130 = load i16, ptr %_tmp129
  store i16 poison, ptr getelementptr ([2 x [3 x [5 x i16]]], ptr @x, i64 0, i64 poison, i64 poison, i64 poison)
  %_tmp142 = add i64 %_tmp1423, 1
  br i1 false, label %bb6, label %loop.exit

loop.exit:                                ; preds = %bb6
  %_tmp142.lcssa = phi i64 [ %_tmp142, %bb6 ]
  %split = phi i16 [ poison, %bb6 ]
  br label %bb9

bb9:                                              ; preds = %bb9.loopexit, %bb1
  ret void
}

define void @phi_with_non_loop_defined_value() {
; CHECK-LABEL: define void @phi_with_non_loop_defined_value() {
; CHECK-NEXT:  [[BB6_LVER_CHECK:.*:]]
; CHECK-NEXT:    [[T:%.*]] = add i16 1, 1
; CHECK-NEXT:    br i1 poison, label %[[BB6_PH_LVER_ORIG:.*]], label %[[BB6_PH:.*]]
; CHECK:       [[BB6_PH_LVER_ORIG]]:
; CHECK-NEXT:    br label %[[BB6_LVER_ORIG:.*]]
; CHECK:       [[BB6_LVER_ORIG]]:
; CHECK-NEXT:    [[_TMP1423_LVER_ORIG:%.*]] = phi i64 [ poison, %[[BB6_PH_LVER_ORIG]] ], [ [[_TMP142_LVER_ORIG:%.*]], %[[BB6_LVER_ORIG]] ]
; CHECK-NEXT:    [[_TMP123_LVER_ORIG:%.*]] = getelementptr [2 x [3 x [5 x i16]]], ptr @x, i16 0, i64 poison
; CHECK-NEXT:    [[_TMP126_LVER_ORIG:%.*]] = getelementptr [3 x [5 x i16]], ptr [[_TMP123_LVER_ORIG]], i16 0, i64 [[_TMP1423_LVER_ORIG]]
; CHECK-NEXT:    [[_TMP129_LVER_ORIG:%.*]] = getelementptr [5 x i16], ptr [[_TMP126_LVER_ORIG]], i16 0, i64 poison
; CHECK-NEXT:    [[_TMP130_LVER_ORIG:%.*]] = load i16, ptr [[_TMP129_LVER_ORIG]], align 2
; CHECK-NEXT:    store i16 poison, ptr @x, align 2
; CHECK-NEXT:    [[_TMP142_LVER_ORIG]] = add i64 [[_TMP1423_LVER_ORIG]], 1
; CHECK-NEXT:    br i1 false, label %[[BB6_LVER_ORIG]], label %[[LOOP_EXIT_LOOPEXIT:.*]]
; CHECK:       [[BB6_PH]]:
; CHECK-NEXT:    br label %[[BB6:.*]]
; CHECK:       [[BB6]]:
; CHECK-NEXT:    [[_TMP1423:%.*]] = phi i64 [ poison, %[[BB6_PH]] ], [ [[_TMP142:%.*]], %[[BB6]] ]
; CHECK-NEXT:    [[_TMP123:%.*]] = getelementptr [2 x [3 x [5 x i16]]], ptr @x, i16 0, i64 poison
; CHECK-NEXT:    [[_TMP126:%.*]] = getelementptr [3 x [5 x i16]], ptr [[_TMP123]], i16 0, i64 [[_TMP1423]]
; CHECK-NEXT:    [[_TMP129:%.*]] = getelementptr [5 x i16], ptr [[_TMP126]], i16 0, i64 poison
; CHECK-NEXT:    [[_TMP130:%.*]] = load i16, ptr [[_TMP129]], align 2, !alias.scope [[META5:![0-9]+]]
; CHECK-NEXT:    store i16 poison, ptr @x, align 2, !alias.scope [[META8:![0-9]+]]
; CHECK-NEXT:    [[_TMP142]] = add i64 [[_TMP1423]], 1
; CHECK-NEXT:    br i1 false, label %[[BB6]], label %[[LOOP_EXIT_LOOPEXIT1:.*]]
; CHECK:       [[LOOP_EXIT_LOOPEXIT]]:
; CHECK-NEXT:    [[_TMP142_LCSSA_PH:%.*]] = phi i64 [ [[_TMP142_LVER_ORIG]], %[[BB6_LVER_ORIG]] ]
; CHECK-NEXT:    [[SPLIT_PH:%.*]] = phi i16 [ [[T]], %[[BB6_LVER_ORIG]] ]
; CHECK-NEXT:    br label %[[LOOP_EXIT:.*]]
; CHECK:       [[LOOP_EXIT_LOOPEXIT1]]:
; CHECK-NEXT:    [[_TMP142_LCSSA_PH2:%.*]] = phi i64 [ [[_TMP142]], %[[BB6]] ]
; CHECK-NEXT:    [[SPLIT_PH3:%.*]] = phi i16 [ [[T]], %[[BB6]] ]
; CHECK-NEXT:    br label %[[LOOP_EXIT]]
; CHECK:       [[LOOP_EXIT]]:
; CHECK-NEXT:    [[_TMP142_LCSSA:%.*]] = phi i64 [ [[_TMP142_LCSSA_PH]], %[[LOOP_EXIT_LOOPEXIT]] ], [ [[_TMP142_LCSSA_PH2]], %[[LOOP_EXIT_LOOPEXIT1]] ]
; CHECK-NEXT:    [[SPLIT:%.*]] = phi i16 [ [[SPLIT_PH]], %[[LOOP_EXIT_LOOPEXIT]] ], [ [[SPLIT_PH3]], %[[LOOP_EXIT_LOOPEXIT1]] ]
; CHECK-NEXT:    br label %[[BB9:.*]]
; CHECK:       [[BB9]]:
; CHECK-NEXT:    ret void
;
bb6.lr.ph:                                        ; preds = %bb5.preheader
  %t = add i16 1, 1
  br label %bb6

bb6:                                              ; preds = %bb6.lr.ph, %bb6
  %_tmp1423 = phi i64 [ poison, %bb6.lr.ph ], [ %_tmp142, %bb6 ]
  %_tmp123 = getelementptr [2 x [3 x [5 x i16]]], ptr @x, i16 0, i64 poison
  %_tmp126 = getelementptr [3 x [5 x i16]], ptr %_tmp123, i16 0, i64 %_tmp1423
  %_tmp129 = getelementptr [5 x i16], ptr %_tmp126, i16 0, i64 poison
  %_tmp130 = load i16, ptr %_tmp129
  store i16 poison, ptr getelementptr ([2 x [3 x [5 x i16]]], ptr @x, i64 0, i64 poison, i64 poison, i64 poison)
  %_tmp142 = add i64 %_tmp1423, 1
  br i1 false, label %bb6, label %loop.exit

loop.exit:                                ; preds = %bb6
  %_tmp142.lcssa = phi i64 [ %_tmp142, %bb6 ]
  %split = phi i16 [ %t, %bb6 ]
  br label %bb9

bb9:                                              ; preds = %bb9.loopexit, %bb1
  ret void
}