; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -slp-vectorizer -slp-threshold=-6 -S -pass-remarks-output=%t < %s | FileCheck %s
; RUN: cat %t | FileCheck -check-prefix=YAML %s


; FIXME: The threshold is changed to keep this test case a bit smaller.
; The AArch64 cost model should not give such high costs to select statements.

target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux"

; YAML:      --- !Passed
; YAML-NEXT: Pass:            slp-vectorizer
; YAML-NEXT: Name:            VectorizedHorizontalReduction
; YAML-NEXT: Function:        test_select
; YAML-NEXT: Args:
; YAML-NEXT:   - String:          'Vectorized horizontal reduction with cost '
; YAML-NEXT:   - Cost:            '-8'
; YAML-NEXT:   - String:          ' and with tree size '
; YAML-NEXT:   - TreeSize:        '8'

define i32 @test_select(i32* noalias nocapture readonly %blk1, i32* noalias nocapture readonly %blk2, i32 %lx, i32 %h) {
; CHECK-LABEL: @test_select(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP_22:%.*]] = icmp sgt i32 [[H:%.*]], 0
; CHECK-NEXT:    br i1 [[CMP_22]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
; CHECK:       for.body.lr.ph:
; CHECK-NEXT:    [[IDX_EXT:%.*]] = sext i32 [[LX:%.*]] to i64
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[S_026:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[OP_EXTRA:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT:    [[J_025:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT:    [[P2_024:%.*]] = phi i32* [ [[BLK2:%.*]], [[FOR_BODY_LR_PH]] ], [ [[ADD_PTR29:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT:    [[P1_023:%.*]] = phi i32* [ [[BLK1:%.*]], [[FOR_BODY_LR_PH]] ], [ [[ADD_PTR:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT:    [[ARRAYIDX4:%.*]] = getelementptr inbounds i32, i32* [[P1_023]], i64 1
; CHECK-NEXT:    [[ARRAYIDX5:%.*]] = getelementptr inbounds i32, i32* [[P2_024]], i64 1
; CHECK-NEXT:    [[ARRAYIDX12:%.*]] = getelementptr inbounds i32, i32* [[P1_023]], i64 2
; CHECK-NEXT:    [[ARRAYIDX13:%.*]] = getelementptr inbounds i32, i32* [[P2_024]], i64 2
; CHECK-NEXT:    [[ARRAYIDX20:%.*]] = getelementptr inbounds i32, i32* [[P1_023]], i64 3
; CHECK-NEXT:    [[TMP0:%.*]] = bitcast i32* [[P1_023]] to <4 x i32>*
; CHECK-NEXT:    [[TMP1:%.*]] = load <4 x i32>, <4 x i32>* [[TMP0]], align 4
; CHECK-NEXT:    [[ARRAYIDX21:%.*]] = getelementptr inbounds i32, i32* [[P2_024]], i64 3
; CHECK-NEXT:    [[TMP2:%.*]] = bitcast i32* [[P2_024]] to <4 x i32>*
; CHECK-NEXT:    [[TMP3:%.*]] = load <4 x i32>, <4 x i32>* [[TMP2]], align 4
; CHECK-NEXT:    [[TMP4:%.*]] = sub nsw <4 x i32> [[TMP1]], [[TMP3]]
; CHECK-NEXT:    [[TMP5:%.*]] = icmp slt <4 x i32> [[TMP4]], zeroinitializer
; CHECK-NEXT:    [[TMP6:%.*]] = sub nsw <4 x i32> zeroinitializer, [[TMP4]]
; CHECK-NEXT:    [[TMP7:%.*]] = select <4 x i1> [[TMP5]], <4 x i32> [[TMP6]], <4 x i32> [[TMP4]]
; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 undef, [[S_026]]
; CHECK-NEXT:    [[ADD11:%.*]] = add nsw i32 [[ADD]], undef
; CHECK-NEXT:    [[ADD19:%.*]] = add nsw i32 [[ADD11]], undef
; CHECK-NEXT:    [[TMP8:%.*]] = call i32 @llvm.experimental.vector.reduce.add.i32.v4i32(<4 x i32> [[TMP7]])
; CHECK-NEXT:    [[OP_EXTRA]] = add nsw i32 [[TMP8]], [[S_026]]
; CHECK-NEXT:    [[ADD27:%.*]] = add nsw i32 [[ADD19]], undef
; CHECK-NEXT:    [[ADD_PTR]] = getelementptr inbounds i32, i32* [[P1_023]], i64 [[IDX_EXT]]
; CHECK-NEXT:    [[ADD_PTR29]] = getelementptr inbounds i32, i32* [[P2_024]], i64 [[IDX_EXT]]
; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[J_025]], 1
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[INC]], [[H]]
; CHECK-NEXT:    br i1 [[EXITCOND]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]]
; CHECK:       for.end.loopexit:
; CHECK-NEXT:    br label [[FOR_END]]
; CHECK:       for.end:
; CHECK-NEXT:    [[S_0_LCSSA:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OP_EXTRA]], [[FOR_END_LOOPEXIT]] ]
; CHECK-NEXT:    ret i32 [[S_0_LCSSA]]
;
entry:
  %cmp.22 = icmp sgt i32 %h, 0
  br i1 %cmp.22, label %for.body.lr.ph, label %for.end

for.body.lr.ph:                                   ; preds = %entry
  %idx.ext = sext i32 %lx to i64
  br label %for.body

for.body:                                         ; preds = %for.body, %for.body.lr.ph
  %s.026 = phi i32 [ 0, %for.body.lr.ph ], [ %add27, %for.body ]
  %j.025 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
  %p2.024 = phi i32* [ %blk2, %for.body.lr.ph ], [ %add.ptr29, %for.body ]
  %p1.023 = phi i32* [ %blk1, %for.body.lr.ph ], [ %add.ptr, %for.body ]
  %0 = load i32, i32* %p1.023, align 4
  %1 = load i32, i32* %p2.024, align 4
  %sub = sub nsw i32 %0, %1
  %cmp2 = icmp slt i32 %sub, 0
  %sub3 = sub nsw i32 0, %sub
  %sub3.sub = select i1 %cmp2, i32 %sub3, i32 %sub
  %add = add nsw i32 %sub3.sub, %s.026
  %arrayidx4 = getelementptr inbounds i32, i32* %p1.023, i64 1
  %2 = load i32, i32* %arrayidx4, align 4
  %arrayidx5 = getelementptr inbounds i32, i32* %p2.024, i64 1
  %3 = load i32, i32* %arrayidx5, align 4
  %sub6 = sub nsw i32 %2, %3
  %cmp7 = icmp slt i32 %sub6, 0
  %sub9 = sub nsw i32 0, %sub6
  %v.1 = select i1 %cmp7, i32 %sub9, i32 %sub6
  %add11 = add nsw i32 %add, %v.1
  %arrayidx12 = getelementptr inbounds i32, i32* %p1.023, i64 2
  %4 = load i32, i32* %arrayidx12, align 4
  %arrayidx13 = getelementptr inbounds i32, i32* %p2.024, i64 2
  %5 = load i32, i32* %arrayidx13, align 4
  %sub14 = sub nsw i32 %4, %5
  %cmp15 = icmp slt i32 %sub14, 0
  %sub17 = sub nsw i32 0, %sub14
  %sub17.sub14 = select i1 %cmp15, i32 %sub17, i32 %sub14
  %add19 = add nsw i32 %add11, %sub17.sub14
  %arrayidx20 = getelementptr inbounds i32, i32* %p1.023, i64 3
  %6 = load i32, i32* %arrayidx20, align 4
  %arrayidx21 = getelementptr inbounds i32, i32* %p2.024, i64 3
  %7 = load i32, i32* %arrayidx21, align 4
  %sub22 = sub nsw i32 %6, %7
  %cmp23 = icmp slt i32 %sub22, 0
  %sub25 = sub nsw i32 0, %sub22
  %v.3 = select i1 %cmp23, i32 %sub25, i32 %sub22
  %add27 = add nsw i32 %add19, %v.3
  %add.ptr = getelementptr inbounds i32, i32* %p1.023, i64 %idx.ext
  %add.ptr29 = getelementptr inbounds i32, i32* %p2.024, i64 %idx.ext
  %inc = add nuw nsw i32 %j.025, 1
  %exitcond = icmp eq i32 %inc, %h
  br i1 %exitcond, label %for.end.loopexit, label %for.body

for.end.loopexit:                                 ; preds = %for.body
  br label %for.end

for.end:                                          ; preds = %for.end.loopexit, %entry
  %s.0.lcssa = phi i32 [ 0, %entry ], [ %add27, %for.end.loopexit ]
  ret i32 %s.0.lcssa
}

;; Check whether SLP can find a reduction phi whose incoming blocks are not
;; the same as the block containing the phi.
;;
;; Came from code like,
;;
;; int s = 0;
;; for (int j = 0; j < h; j++) {
;;   s += p1[0] * p2[0]
;;   s += p1[1] * p2[1];
;;   s += p1[2] * p2[2];
;;   s += p1[3] * p2[3];
;;   if (s >= lim)
;;      break;
;;   p1 += lx;
;;   p2 += lx;
;; }
define i32 @reduction_with_br(i32* noalias nocapture readonly %blk1, i32* noalias nocapture readonly %blk2, i32 %lx, i32 %h, i32 %lim) {
; YAML:      --- !Passed
; YAML-NEXT: Pass:            slp-vectorizer
; YAML-NEXT: Name:            VectorizedHorizontalReduction
; YAML-NEXT: Function:        reduction_with_br
; YAML-NEXT: Args:
; YAML-NEXT:   - String:          'Vectorized horizontal reduction with cost '
; YAML-NEXT:   - Cost:            '-11'
; YAML-NEXT:   - String:          ' and with tree size '
; YAML-NEXT:   - TreeSize:        '3'
; CHECK-LABEL: @reduction_with_br(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP_16:%.*]] = icmp sgt i32 [[H:%.*]], 0
; CHECK-NEXT:    br i1 [[CMP_16]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
; CHECK:       for.body.lr.ph:
; CHECK-NEXT:    [[IDX_EXT:%.*]] = sext i32 [[LX:%.*]] to i64
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[S_020:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[OP_EXTRA:%.*]], [[IF_END:%.*]] ]
; CHECK-NEXT:    [[J_019:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[INC:%.*]], [[IF_END]] ]
; CHECK-NEXT:    [[P2_018:%.*]] = phi i32* [ [[BLK2:%.*]], [[FOR_BODY_LR_PH]] ], [ [[ADD_PTR16:%.*]], [[IF_END]] ]
; CHECK-NEXT:    [[P1_017:%.*]] = phi i32* [ [[BLK1:%.*]], [[FOR_BODY_LR_PH]] ], [ [[ADD_PTR:%.*]], [[IF_END]] ]
; CHECK-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, i32* [[P1_017]], i64 1
; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, i32* [[P2_018]], i64 1
; CHECK-NEXT:    [[ARRAYIDX6:%.*]] = getelementptr inbounds i32, i32* [[P1_017]], i64 2
; CHECK-NEXT:    [[ARRAYIDX7:%.*]] = getelementptr inbounds i32, i32* [[P2_018]], i64 2
; CHECK-NEXT:    [[ARRAYIDX10:%.*]] = getelementptr inbounds i32, i32* [[P1_017]], i64 3
; CHECK-NEXT:    [[TMP0:%.*]] = bitcast i32* [[P1_017]] to <4 x i32>*
; CHECK-NEXT:    [[TMP1:%.*]] = load <4 x i32>, <4 x i32>* [[TMP0]], align 4
; CHECK-NEXT:    [[ARRAYIDX11:%.*]] = getelementptr inbounds i32, i32* [[P2_018]], i64 3
; CHECK-NEXT:    [[TMP2:%.*]] = bitcast i32* [[P2_018]] to <4 x i32>*
; CHECK-NEXT:    [[TMP3:%.*]] = load <4 x i32>, <4 x i32>* [[TMP2]], align 4
; CHECK-NEXT:    [[TMP4:%.*]] = mul nsw <4 x i32> [[TMP3]], [[TMP1]]
; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 undef, [[S_020]]
; CHECK-NEXT:    [[ADD5:%.*]] = add nsw i32 [[ADD]], undef
; CHECK-NEXT:    [[ADD9:%.*]] = add nsw i32 [[ADD5]], undef
; CHECK-NEXT:    [[TMP5:%.*]] = call i32 @llvm.experimental.vector.reduce.add.i32.v4i32(<4 x i32> [[TMP4]])
; CHECK-NEXT:    [[OP_EXTRA]] = add nsw i32 [[TMP5]], [[S_020]]
; CHECK-NEXT:    [[ADD13:%.*]] = add nsw i32 [[ADD9]], undef
; CHECK-NEXT:    [[CMP14:%.*]] = icmp slt i32 [[OP_EXTRA]], [[LIM:%.*]]
; CHECK-NEXT:    br i1 [[CMP14]], label [[IF_END]], label [[FOR_END_LOOPEXIT:%.*]]
; CHECK:       if.end:
; CHECK-NEXT:    [[ADD_PTR]] = getelementptr inbounds i32, i32* [[P1_017]], i64 [[IDX_EXT]]
; CHECK-NEXT:    [[ADD_PTR16]] = getelementptr inbounds i32, i32* [[P2_018]], i64 [[IDX_EXT]]
; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[J_019]], 1
; CHECK-NEXT:    [[CMP:%.*]] = icmp slt i32 [[INC]], [[H]]
; CHECK-NEXT:    br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT]]
; CHECK:       for.end.loopexit:
; CHECK-NEXT:    br label [[FOR_END]]
; CHECK:       for.end:
; CHECK-NEXT:    [[S_1:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OP_EXTRA]], [[FOR_END_LOOPEXIT]] ]
; CHECK-NEXT:    ret i32 [[S_1]]
;
entry:
  %cmp.16 = icmp sgt i32 %h, 0
  br i1 %cmp.16, label %for.body.lr.ph, label %for.end

for.body.lr.ph:                                   ; preds = %entry
  %idx.ext = sext i32 %lx to i64
  br label %for.body

for.body:                                         ; preds = %for.body.lr.ph, %if.end
  %s.020 = phi i32 [ 0, %for.body.lr.ph ], [ %add13, %if.end ]
  %j.019 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %if.end ]
  %p2.018 = phi i32* [ %blk2, %for.body.lr.ph ], [ %add.ptr16, %if.end ]
  %p1.017 = phi i32* [ %blk1, %for.body.lr.ph ], [ %add.ptr, %if.end ]
  %0 = load i32, i32* %p1.017, align 4
  %1 = load i32, i32* %p2.018, align 4
  %mul = mul nsw i32 %1, %0
  %add = add nsw i32 %mul, %s.020
  %arrayidx2 = getelementptr inbounds i32, i32* %p1.017, i64 1
  %2 = load i32, i32* %arrayidx2, align 4
  %arrayidx3 = getelementptr inbounds i32, i32* %p2.018, i64 1
  %3 = load i32, i32* %arrayidx3, align 4
  %mul4 = mul nsw i32 %3, %2
  %add5 = add nsw i32 %add, %mul4
  %arrayidx6 = getelementptr inbounds i32, i32* %p1.017, i64 2
  %4 = load i32, i32* %arrayidx6, align 4
  %arrayidx7 = getelementptr inbounds i32, i32* %p2.018, i64 2
  %5 = load i32, i32* %arrayidx7, align 4
  %mul8 = mul nsw i32 %5, %4
  %add9 = add nsw i32 %add5, %mul8
  %arrayidx10 = getelementptr inbounds i32, i32* %p1.017, i64 3
  %6 = load i32, i32* %arrayidx10, align 4
  %arrayidx11 = getelementptr inbounds i32, i32* %p2.018, i64 3
  %7 = load i32, i32* %arrayidx11, align 4
  %mul12 = mul nsw i32 %7, %6
  %add13 = add nsw i32 %add9, %mul12
  %cmp14 = icmp slt i32 %add13, %lim
  br i1 %cmp14, label %if.end, label %for.end.loopexit

if.end:                                           ; preds = %for.body
  %add.ptr = getelementptr inbounds i32, i32* %p1.017, i64 %idx.ext
  %add.ptr16 = getelementptr inbounds i32, i32* %p2.018, i64 %idx.ext
  %inc = add nuw nsw i32 %j.019, 1
  %cmp = icmp slt i32 %inc, %h
  br i1 %cmp, label %for.body, label %for.end.loopexit

for.end.loopexit:                                 ; preds = %for.body, %if.end
  br label %for.end

for.end:                                          ; preds = %for.end.loopexit, %entry
  %s.1 = phi i32 [ 0, %entry ], [ %add13, %for.end.loopexit ]
  ret i32 %s.1
}

; YAML:      --- !Passed
; YAML-NEXT: Pass:            slp-vectorizer
; YAML-NEXT: Name:            VectorizedHorizontalReduction
; YAML-NEXT: Function:        test_unrolled_select
; YAML-NEXT: Args:
; YAML-NEXT:   - String:          'Vectorized horizontal reduction with cost '
; YAML-NEXT:   - Cost:            '-47'
; YAML-NEXT:   - String:          ' and with tree size '
; YAML-NEXT:   - TreeSize:        '10'

define i32 @test_unrolled_select(i8* noalias nocapture readonly %blk1, i8* noalias nocapture readonly %blk2, i32 %lx, i32 %h, i32 %lim) #0 {
; CHECK-LABEL: @test_unrolled_select(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP_43:%.*]] = icmp sgt i32 [[H:%.*]], 0
; CHECK-NEXT:    br i1 [[CMP_43]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_END:%.*]]
; CHECK:       for.body.lr.ph:
; CHECK-NEXT:    [[IDX_EXT:%.*]] = sext i32 [[LX:%.*]] to i64
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[S_047:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[OP_EXTRA:%.*]], [[IF_END_86:%.*]] ]
; CHECK-NEXT:    [[J_046:%.*]] = phi i32 [ 0, [[FOR_BODY_LR_PH]] ], [ [[INC:%.*]], [[IF_END_86]] ]
; CHECK-NEXT:    [[P2_045:%.*]] = phi i8* [ [[BLK2:%.*]], [[FOR_BODY_LR_PH]] ], [ [[ADD_PTR88:%.*]], [[IF_END_86]] ]
; CHECK-NEXT:    [[P1_044:%.*]] = phi i8* [ [[BLK1:%.*]], [[FOR_BODY_LR_PH]] ], [ [[ADD_PTR:%.*]], [[IF_END_86]] ]
; CHECK-NEXT:    [[ARRAYIDX6:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 1
; CHECK-NEXT:    [[ARRAYIDX8:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 1
; CHECK-NEXT:    [[ARRAYIDX17:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 2
; CHECK-NEXT:    [[ARRAYIDX19:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 2
; CHECK-NEXT:    [[ARRAYIDX28:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 3
; CHECK-NEXT:    [[ARRAYIDX30:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 3
; CHECK-NEXT:    [[ARRAYIDX39:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 4
; CHECK-NEXT:    [[ARRAYIDX41:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 4
; CHECK-NEXT:    [[ARRAYIDX50:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 5
; CHECK-NEXT:    [[ARRAYIDX52:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 5
; CHECK-NEXT:    [[ARRAYIDX61:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 6
; CHECK-NEXT:    [[ARRAYIDX63:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 6
; CHECK-NEXT:    [[ARRAYIDX72:%.*]] = getelementptr inbounds i8, i8* [[P1_044]], i64 7
; CHECK-NEXT:    [[TMP0:%.*]] = bitcast i8* [[P1_044]] to <8 x i8>*
; CHECK-NEXT:    [[TMP1:%.*]] = load <8 x i8>, <8 x i8>* [[TMP0]], align 1
; CHECK-NEXT:    [[TMP2:%.*]] = zext <8 x i8> [[TMP1]] to <8 x i32>
; CHECK-NEXT:    [[ARRAYIDX74:%.*]] = getelementptr inbounds i8, i8* [[P2_045]], i64 7
; CHECK-NEXT:    [[TMP3:%.*]] = bitcast i8* [[P2_045]] to <8 x i8>*
; CHECK-NEXT:    [[TMP4:%.*]] = load <8 x i8>, <8 x i8>* [[TMP3]], align 1
; CHECK-NEXT:    [[TMP5:%.*]] = zext <8 x i8> [[TMP4]] to <8 x i32>
; CHECK-NEXT:    [[TMP6:%.*]] = sub nsw <8 x i32> [[TMP2]], [[TMP5]]
; CHECK-NEXT:    [[TMP7:%.*]] = icmp slt <8 x i32> [[TMP6]], zeroinitializer
; CHECK-NEXT:    [[TMP8:%.*]] = sub nsw <8 x i32> zeroinitializer, [[TMP6]]
; CHECK-NEXT:    [[TMP9:%.*]] = select <8 x i1> [[TMP7]], <8 x i32> [[TMP8]], <8 x i32> [[TMP6]]
; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 undef, [[S_047]]
; CHECK-NEXT:    [[ADD16:%.*]] = add nsw i32 [[ADD]], undef
; CHECK-NEXT:    [[ADD27:%.*]] = add nsw i32 [[ADD16]], undef
; CHECK-NEXT:    [[ADD38:%.*]] = add nsw i32 [[ADD27]], undef
; CHECK-NEXT:    [[ADD49:%.*]] = add nsw i32 [[ADD38]], undef
; CHECK-NEXT:    [[ADD60:%.*]] = add nsw i32 [[ADD49]], undef
; CHECK-NEXT:    [[ADD71:%.*]] = add nsw i32 [[ADD60]], undef
; CHECK-NEXT:    [[TMP10:%.*]] = call i32 @llvm.experimental.vector.reduce.add.i32.v8i32(<8 x i32> [[TMP9]])
; CHECK-NEXT:    [[OP_EXTRA]] = add nsw i32 [[TMP10]], [[S_047]]
; CHECK-NEXT:    [[ADD82:%.*]] = add nsw i32 [[ADD71]], undef
; CHECK-NEXT:    [[CMP83:%.*]] = icmp slt i32 [[OP_EXTRA]], [[LIM:%.*]]
; CHECK-NEXT:    br i1 [[CMP83]], label [[IF_END_86]], label [[FOR_END_LOOPEXIT:%.*]]
; CHECK:       if.end.86:
; CHECK-NEXT:    [[ADD_PTR]] = getelementptr inbounds i8, i8* [[P1_044]], i64 [[IDX_EXT]]
; CHECK-NEXT:    [[ADD_PTR88]] = getelementptr inbounds i8, i8* [[P2_045]], i64 [[IDX_EXT]]
; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[J_046]], 1
; CHECK-NEXT:    [[CMP:%.*]] = icmp slt i32 [[INC]], [[H]]
; CHECK-NEXT:    br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END_LOOPEXIT]]
; CHECK:       for.end.loopexit:
; CHECK-NEXT:    br label [[FOR_END]]
; CHECK:       for.end:
; CHECK-NEXT:    [[S_1:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OP_EXTRA]], [[FOR_END_LOOPEXIT]] ]
; CHECK-NEXT:    ret i32 [[S_1]]
;
entry:
  %cmp.43 = icmp sgt i32 %h, 0
  br i1 %cmp.43, label %for.body.lr.ph, label %for.end

for.body.lr.ph:                                   ; preds = %entry
  %idx.ext = sext i32 %lx to i64
  br label %for.body

for.body:                                         ; preds = %for.body.lr.ph, %if.end.86
  %s.047 = phi i32 [ 0, %for.body.lr.ph ], [ %add82, %if.end.86 ]
  %j.046 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %if.end.86 ]
  %p2.045 = phi i8* [ %blk2, %for.body.lr.ph ], [ %add.ptr88, %if.end.86 ]
  %p1.044 = phi i8* [ %blk1, %for.body.lr.ph ], [ %add.ptr, %if.end.86 ]
  %0 = load i8, i8* %p1.044, align 1
  %conv = zext i8 %0 to i32
  %1 = load i8, i8* %p2.045, align 1
  %conv2 = zext i8 %1 to i32
  %sub = sub nsw i32 %conv, %conv2
  %cmp3 = icmp slt i32 %sub, 0
  %sub5 = sub nsw i32 0, %sub
  %sub5.sub = select i1 %cmp3, i32 %sub5, i32 %sub
  %add = add nsw i32 %sub5.sub, %s.047
  %arrayidx6 = getelementptr inbounds i8, i8* %p1.044, i64 1
  %2 = load i8, i8* %arrayidx6, align 1
  %conv7 = zext i8 %2 to i32
  %arrayidx8 = getelementptr inbounds i8, i8* %p2.045, i64 1
  %3 = load i8, i8* %arrayidx8, align 1
  %conv9 = zext i8 %3 to i32
  %sub10 = sub nsw i32 %conv7, %conv9
  %cmp11 = icmp slt i32 %sub10, 0
  %sub14 = sub nsw i32 0, %sub10
  %v.1 = select i1 %cmp11, i32 %sub14, i32 %sub10
  %add16 = add nsw i32 %add, %v.1
  %arrayidx17 = getelementptr inbounds i8, i8* %p1.044, i64 2
  %4 = load i8, i8* %arrayidx17, align 1
  %conv18 = zext i8 %4 to i32
  %arrayidx19 = getelementptr inbounds i8, i8* %p2.045, i64 2
  %5 = load i8, i8* %arrayidx19, align 1
  %conv20 = zext i8 %5 to i32
  %sub21 = sub nsw i32 %conv18, %conv20
  %cmp22 = icmp slt i32 %sub21, 0
  %sub25 = sub nsw i32 0, %sub21
  %sub25.sub21 = select i1 %cmp22, i32 %sub25, i32 %sub21
  %add27 = add nsw i32 %add16, %sub25.sub21
  %arrayidx28 = getelementptr inbounds i8, i8* %p1.044, i64 3
  %6 = load i8, i8* %arrayidx28, align 1
  %conv29 = zext i8 %6 to i32
  %arrayidx30 = getelementptr inbounds i8, i8* %p2.045, i64 3
  %7 = load i8, i8* %arrayidx30, align 1
  %conv31 = zext i8 %7 to i32
  %sub32 = sub nsw i32 %conv29, %conv31
  %cmp33 = icmp slt i32 %sub32, 0
  %sub36 = sub nsw i32 0, %sub32
  %v.3 = select i1 %cmp33, i32 %sub36, i32 %sub32
  %add38 = add nsw i32 %add27, %v.3
  %arrayidx39 = getelementptr inbounds i8, i8* %p1.044, i64 4
  %8 = load i8, i8* %arrayidx39, align 1
  %conv40 = zext i8 %8 to i32
  %arrayidx41 = getelementptr inbounds i8, i8* %p2.045, i64 4
  %9 = load i8, i8* %arrayidx41, align 1
  %conv42 = zext i8 %9 to i32
  %sub43 = sub nsw i32 %conv40, %conv42
  %cmp44 = icmp slt i32 %sub43, 0
  %sub47 = sub nsw i32 0, %sub43
  %sub47.sub43 = select i1 %cmp44, i32 %sub47, i32 %sub43
  %add49 = add nsw i32 %add38, %sub47.sub43
  %arrayidx50 = getelementptr inbounds i8, i8* %p1.044, i64 5
  %10 = load i8, i8* %arrayidx50, align 1
  %conv51 = zext i8 %10 to i32
  %arrayidx52 = getelementptr inbounds i8, i8* %p2.045, i64 5
  %11 = load i8, i8* %arrayidx52, align 1
  %conv53 = zext i8 %11 to i32
  %sub54 = sub nsw i32 %conv51, %conv53
  %cmp55 = icmp slt i32 %sub54, 0
  %sub58 = sub nsw i32 0, %sub54
  %v.5 = select i1 %cmp55, i32 %sub58, i32 %sub54
  %add60 = add nsw i32 %add49, %v.5
  %arrayidx61 = getelementptr inbounds i8, i8* %p1.044, i64 6
  %12 = load i8, i8* %arrayidx61, align 1
  %conv62 = zext i8 %12 to i32
  %arrayidx63 = getelementptr inbounds i8, i8* %p2.045, i64 6
  %13 = load i8, i8* %arrayidx63, align 1
  %conv64 = zext i8 %13 to i32
  %sub65 = sub nsw i32 %conv62, %conv64
  %cmp66 = icmp slt i32 %sub65, 0
  %sub69 = sub nsw i32 0, %sub65
  %sub69.sub65 = select i1 %cmp66, i32 %sub69, i32 %sub65
  %add71 = add nsw i32 %add60, %sub69.sub65
  %arrayidx72 = getelementptr inbounds i8, i8* %p1.044, i64 7
  %14 = load i8, i8* %arrayidx72, align 1
  %conv73 = zext i8 %14 to i32
  %arrayidx74 = getelementptr inbounds i8, i8* %p2.045, i64 7
  %15 = load i8, i8* %arrayidx74, align 1
  %conv75 = zext i8 %15 to i32
  %sub76 = sub nsw i32 %conv73, %conv75
  %cmp77 = icmp slt i32 %sub76, 0
  %sub80 = sub nsw i32 0, %sub76
  %v.7 = select i1 %cmp77, i32 %sub80, i32 %sub76
  %add82 = add nsw i32 %add71, %v.7
  %cmp83 = icmp slt i32 %add82, %lim
  br i1 %cmp83, label %if.end.86, label %for.end.loopexit

if.end.86:                                        ; preds = %for.body
  %add.ptr = getelementptr inbounds i8, i8* %p1.044, i64 %idx.ext
  %add.ptr88 = getelementptr inbounds i8, i8* %p2.045, i64 %idx.ext
  %inc = add nuw nsw i32 %j.046, 1
  %cmp = icmp slt i32 %inc, %h
  br i1 %cmp, label %for.body, label %for.end.loopexit

for.end.loopexit:                                 ; preds = %for.body, %if.end.86
  br label %for.end

for.end:                                          ; preds = %for.end.loopexit, %entry
  %s.1 = phi i32 [ 0, %entry ], [ %add82, %for.end.loopexit ]
  ret i32 %s.1
}