; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=loop-vectorize,instcombine -force-vector-width=4 -force-vector-interleave=1 -enable-interleaved-mem-accesses=true -runtime-memory-check-threshold=24 < %s | FileCheck %s

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

; Check vectorization on an interleaved load group of factor 2 and an interleaved
; store group of factor 2.

; int AB[1024];
; int CD[1024];
;  void test_array_load2_store2(int C, int D) {
;   for (int i = 0; i < 1024; i+=2) {
;     int A = AB[i];
;     int B = AB[i+1];
;     CD[i] = A + C;
;     CD[i+1] = B * D;
;   }
; }


@AB = common global [1024 x i32] zeroinitializer, align 4
@CD = common global [1024 x i32] zeroinitializer, align 4

define void @test_array_load2_store2(i32 %C, i32 %D) {
; CHECK-LABEL: @test_array_load2_store2(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[C:%.*]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT2:%.*]] = insertelement <4 x i32> poison, i32 [[D:%.*]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT3:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT2]], <4 x i32> poison, <4 x i32> zeroinitializer
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = shl i64 [[INDEX]], 1
; CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds [1024 x i32], ptr @AB, i64 0, i64 [[OFFSET_IDX]]
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <8 x i32>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[STRIDED_VEC:%.*]] = shufflevector <8 x i32> [[WIDE_VEC]], <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
; CHECK-NEXT:    [[STRIDED_VEC1:%.*]] = shufflevector <8 x i32> [[WIDE_VEC]], <8 x i32> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
; CHECK-NEXT:    [[TMP1:%.*]] = or i64 [[OFFSET_IDX]], 1
; CHECK-NEXT:    [[TMP2:%.*]] = add nsw <4 x i32> [[STRIDED_VEC]], [[BROADCAST_SPLAT]]
; CHECK-NEXT:    [[TMP3:%.*]] = mul nsw <4 x i32> [[STRIDED_VEC1]], [[BROADCAST_SPLAT3]]
; CHECK-NEXT:    [[TMP4:%.*]] = getelementptr inbounds [1024 x i32], ptr @CD, i64 0, i64 [[TMP1]]
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i32, ptr [[TMP4]], i64 -1
; CHECK-NEXT:    [[INTERLEAVED_VEC:%.*]] = shufflevector <4 x i32> [[TMP2]], <4 x i32> [[TMP3]], <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>
; CHECK-NEXT:    store <8 x i32> [[INTERLEAVED_VEC]], ptr [[TMP5]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], 512
; CHECK-NEXT:    br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br i1 true, label [[FOR_END:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    br i1 poison, label [[FOR_BODY]], label [[FOR_END]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK:       for.end:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.body

for.body:                                         ; preds = %for.body, %entry
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %arrayidx0 = getelementptr inbounds [1024 x i32], ptr @AB, i64 0, i64 %indvars.iv
  %tmp = load i32, ptr %arrayidx0, align 4
  %tmp1 = or i64 %indvars.iv, 1
  %arrayidx1 = getelementptr inbounds [1024 x i32], ptr @AB, i64 0, i64 %tmp1
  %tmp2 = load i32, ptr %arrayidx1, align 4
  %add = add nsw i32 %tmp, %C
  %mul = mul nsw i32 %tmp2, %D
  %arrayidx2 = getelementptr inbounds [1024 x i32], ptr @CD, i64 0, i64 %indvars.iv
  store i32 %add, ptr %arrayidx2, align 4
  %arrayidx3 = getelementptr inbounds [1024 x i32], ptr @CD, i64 0, i64 %tmp1
  store i32 %mul, ptr %arrayidx3, align 4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 2
  %cmp = icmp slt i64 %indvars.iv.next, 1024
  br i1 %cmp, label %for.body, label %for.end

for.end:                                          ; preds = %for.body
  ret void
}

; int A[3072];
; struct ST S[1024];
; void test_struct_st3() {
;   int *ptr = A;
;   for (int i = 0; i < 1024; i++) {
;     int X1 = *ptr++;
;     int X2 = *ptr++;
;     int X3 = *ptr++;
;     T[i].x = X1 + 1;
;     T[i].y = X2 + 2;
;     T[i].z = X3 + 3;
;   }
; }


%struct.ST3 = type { i32, i32, i32 }
@A = common global [3072 x i32] zeroinitializer, align 4
@S = common global [1024 x %struct.ST3] zeroinitializer, align 4

define void @test_struct_array_load3_store3() {
; CHECK-LABEL: @test_struct_array_load3_store3(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = mul i64 [[INDEX]], 12
; CHECK-NEXT:    [[NEXT_GEP:%.*]] = getelementptr i8, ptr @A, i64 [[TMP0]]
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <12 x i32>, ptr [[NEXT_GEP]], align 4
; CHECK-NEXT:    [[STRIDED_VEC:%.*]] = shufflevector <12 x i32> [[WIDE_VEC]], <12 x i32> poison, <4 x i32> <i32 0, i32 3, i32 6, i32 9>
; CHECK-NEXT:    [[STRIDED_VEC2:%.*]] = shufflevector <12 x i32> [[WIDE_VEC]], <12 x i32> poison, <4 x i32> <i32 1, i32 4, i32 7, i32 10>
; CHECK-NEXT:    [[STRIDED_VEC3:%.*]] = shufflevector <12 x i32> [[WIDE_VEC]], <12 x i32> poison, <4 x i32> <i32 2, i32 5, i32 8, i32 11>
; CHECK-NEXT:    [[TMP1:%.*]] = add nsw <4 x i32> [[STRIDED_VEC]], <i32 1, i32 1, i32 1, i32 1>
; CHECK-NEXT:    [[TMP2:%.*]] = add nsw <4 x i32> [[STRIDED_VEC2]], <i32 2, i32 2, i32 2, i32 2>
; CHECK-NEXT:    [[TMP3:%.*]] = add nsw <4 x i32> [[STRIDED_VEC3]], <i32 3, i32 3, i32 3, i32 3>
; CHECK-NEXT:    [[TMP4:%.*]] = getelementptr inbounds [1024 x %struct.ST3], ptr @S, i64 0, i64 [[INDEX]]
; CHECK-NEXT:    [[TMP5:%.*]] = shufflevector <4 x i32> [[TMP1]], <4 x i32> [[TMP2]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT:    [[TMP6:%.*]] = shufflevector <4 x i32> [[TMP3]], <4 x i32> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison>
; CHECK-NEXT:    [[INTERLEAVED_VEC:%.*]] = shufflevector <8 x i32> [[TMP5]], <8 x i32> [[TMP6]], <12 x i32> <i32 0, i32 4, i32 8, i32 1, i32 5, i32 9, i32 2, i32 6, i32 10, i32 3, i32 7, i32 11>
; CHECK-NEXT:    store <12 x i32> [[INTERLEAVED_VEC]], ptr [[TMP4]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP7:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1024
; CHECK-NEXT:    br i1 [[TMP7]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br i1 true, label [[FOR_END:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    br i1 poison, label [[FOR_END]], label [[FOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK:       for.end:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.body

for.body:                                         ; preds = %for.body, %entry
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %ptr.016 = phi ptr [ @A, %entry ], [ %incdec.ptr2, %for.body ]
  %incdec.ptr = getelementptr inbounds i32, ptr %ptr.016, i64 1
  %tmp = load i32, ptr %ptr.016, align 4
  %incdec.ptr1 = getelementptr inbounds i32, ptr %ptr.016, i64 2
  %tmp1 = load i32, ptr %incdec.ptr, align 4
  %incdec.ptr2 = getelementptr inbounds i32, ptr %ptr.016, i64 3
  %tmp2 = load i32, ptr %incdec.ptr1, align 4
  %add = add nsw i32 %tmp, 1
  %x = getelementptr inbounds [1024 x %struct.ST3], ptr @S, i64 0, i64 %indvars.iv, i32 0
  store i32 %add, ptr %x, align 4
  %add3 = add nsw i32 %tmp1, 2
  %y = getelementptr inbounds [1024 x %struct.ST3], ptr @S, i64 0, i64 %indvars.iv, i32 1
  store i32 %add3, ptr %y, align 4
  %add6 = add nsw i32 %tmp2, 3
  %z = getelementptr inbounds [1024 x %struct.ST3], ptr @S, i64 0, i64 %indvars.iv, i32 2
  store i32 %add6, ptr %z, align 4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond = icmp eq i64 %indvars.iv.next, 1024
  br i1 %exitcond, label %for.end, label %for.body

for.end:                                          ; preds = %for.body
  ret void
}

; Check vectorization on an interleaved load group of factor 4.

; struct ST4{
;   int x;
;   int y;
;   int z;
;   int w;
; };
; int test_struct_load4(struct ST4 *S) {
;   int r = 0;
;   for (int i = 0; i < 1024; i++) {
;      r += S[i].x;
;      r -= S[i].y;
;      r += S[i].z;
;      r -= S[i].w;
;   }
;   return r;
; }

%struct.ST4 = type { i32, i32, i32, i32 }

define i32 @test_struct_load4(ptr nocapture readonly %S) {
;
; CHECK-LABEL: @test_struct_load4(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP4:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds [[STRUCT_ST4:%.*]], ptr [[S:%.*]], i64 [[INDEX]], i32 0
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <16 x i32>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[STRIDED_VEC:%.*]] = shufflevector <16 x i32> [[WIDE_VEC]], <16 x i32> poison, <4 x i32> <i32 0, i32 4, i32 8, i32 12>
; CHECK-NEXT:    [[STRIDED_VEC1:%.*]] = shufflevector <16 x i32> [[WIDE_VEC]], <16 x i32> poison, <4 x i32> <i32 1, i32 5, i32 9, i32 13>
; CHECK-NEXT:    [[STRIDED_VEC2:%.*]] = shufflevector <16 x i32> [[WIDE_VEC]], <16 x i32> poison, <4 x i32> <i32 2, i32 6, i32 10, i32 14>
; CHECK-NEXT:    [[STRIDED_VEC3:%.*]] = shufflevector <16 x i32> [[WIDE_VEC]], <16 x i32> poison, <4 x i32> <i32 3, i32 7, i32 11, i32 15>
; CHECK-NEXT:    [[TMP1:%.*]] = add <4 x i32> [[STRIDED_VEC]], [[VEC_PHI]]
; CHECK-NEXT:    [[TMP2:%.*]] = add <4 x i32> [[TMP1]], [[STRIDED_VEC2]]
; CHECK-NEXT:    [[TMP3:%.*]] = add <4 x i32> [[STRIDED_VEC1]], [[STRIDED_VEC3]]
; CHECK-NEXT:    [[TMP4]] = sub <4 x i32> [[TMP2]], [[TMP3]]
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP5:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1024
; CHECK-NEXT:    br i1 [[TMP5]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    [[TMP6:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[TMP4]])
; CHECK-NEXT:    br i1 true, label [[FOR_END:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    br i1 poison, label [[FOR_END]], label [[FOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK:       for.end:
; CHECK-NEXT:    [[SUB8_LCSSA:%.*]] = phi i32 [ poison, [[FOR_BODY]] ], [ [[TMP6]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT:    ret i32 [[SUB8_LCSSA]]
;
entry:
  br label %for.body

for.body:                                         ; preds = %for.body, %entry
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %r.022 = phi i32 [ 0, %entry ], [ %sub8, %for.body ]
  %x = getelementptr inbounds %struct.ST4, ptr %S, i64 %indvars.iv, i32 0
  %tmp = load i32, ptr %x, align 4
  %add = add nsw i32 %tmp, %r.022
  %y = getelementptr inbounds %struct.ST4, ptr %S, i64 %indvars.iv, i32 1
  %tmp1 = load i32, ptr %y, align 4
  %sub = sub i32 %add, %tmp1
  %z = getelementptr inbounds %struct.ST4, ptr %S, i64 %indvars.iv, i32 2
  %tmp2 = load i32, ptr %z, align 4
  %add5 = add nsw i32 %sub, %tmp2
  %w = getelementptr inbounds %struct.ST4, ptr %S, i64 %indvars.iv, i32 3
  %tmp3 = load i32, ptr %w, align 4
  %sub8 = sub i32 %add5, %tmp3
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond = icmp eq i64 %indvars.iv.next, 1024
  br i1 %exitcond, label %for.end, label %for.body

for.end:                                          ; preds = %for.body
  ret i32 %sub8
}

; Check vectorization on an interleaved store group of factor 4.

; void test_struct_store4(int *A, struct ST4 *B) {
;   int *ptr = A;
;   for (int i = 0; i < 1024; i++) {
;     int X = *ptr++;
;     B[i].x = X + 1;
;     B[i].y = X * 2;
;     B[i].z = X + 3;
;     B[i].w = X + 4;
;   }
; }


define void @test_struct_store4(ptr noalias nocapture readonly %A, ptr noalias nocapture %B) {
; CHECK-LABEL: @test_struct_store4(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = shl i64 [[INDEX]], 2
; CHECK-NEXT:    [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[A:%.*]], i64 [[TMP0]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[NEXT_GEP]], align 4
; CHECK-NEXT:    [[TMP1:%.*]] = add nsw <4 x i32> [[WIDE_LOAD]], <i32 1, i32 1, i32 1, i32 1>
; CHECK-NEXT:    [[TMP2:%.*]] = shl nsw <4 x i32> [[WIDE_LOAD]], <i32 1, i32 1, i32 1, i32 1>
; CHECK-NEXT:    [[TMP3:%.*]] = add nsw <4 x i32> [[WIDE_LOAD]], <i32 3, i32 3, i32 3, i32 3>
; CHECK-NEXT:    [[TMP4:%.*]] = add nsw <4 x i32> [[WIDE_LOAD]], <i32 4, i32 4, i32 4, i32 4>
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds [[STRUCT_ST4:%.*]], ptr [[B:%.*]], i64 [[INDEX]]
; CHECK-NEXT:    [[TMP6:%.*]] = shufflevector <4 x i32> [[TMP1]], <4 x i32> [[TMP2]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT:    [[TMP7:%.*]] = shufflevector <4 x i32> [[TMP3]], <4 x i32> [[TMP4]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT:    [[INTERLEAVED_VEC:%.*]] = shufflevector <8 x i32> [[TMP6]], <8 x i32> [[TMP7]], <16 x i32> <i32 0, i32 4, i32 8, i32 12, i32 1, i32 5, i32 9, i32 13, i32 2, i32 6, i32 10, i32 14, i32 3, i32 7, i32 11, i32 15>
; CHECK-NEXT:    store <16 x i32> [[INTERLEAVED_VEC]], ptr [[TMP5]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1024
; CHECK-NEXT:    br i1 [[TMP8]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br i1 true, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       for.body:
; CHECK-NEXT:    br i1 poison, label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]]
;
entry:
  br label %for.body

for.cond.cleanup:                                 ; preds = %for.body
  ret void

for.body:                                         ; preds = %for.body, %entry
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %ptr.024 = phi ptr [ %A, %entry ], [ %incdec.ptr, %for.body ]
  %incdec.ptr = getelementptr inbounds i32, ptr %ptr.024, i64 1
  %tmp = load i32, ptr %ptr.024, align 4
  %add = add nsw i32 %tmp, 1
  %x = getelementptr inbounds %struct.ST4, ptr %B, i64 %indvars.iv, i32 0
  store i32 %add, ptr %x, align 4
  %mul = shl nsw i32 %tmp, 1
  %y = getelementptr inbounds %struct.ST4, ptr %B, i64 %indvars.iv, i32 1
  store i32 %mul, ptr %y, align 4
  %add3 = add nsw i32 %tmp, 3
  %z = getelementptr inbounds %struct.ST4, ptr %B, i64 %indvars.iv, i32 2
  store i32 %add3, ptr %z, align 4
  %add6 = add nsw i32 %tmp, 4
  %w = getelementptr inbounds %struct.ST4, ptr %B, i64 %indvars.iv, i32 3
  store i32 %add6, ptr %w, align 4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond = icmp eq i64 %indvars.iv.next, 1024
  br i1 %exitcond, label %for.cond.cleanup, label %for.body
}

; Check vectorization on a reverse interleaved load group of factor 2 and
; a reverse interleaved store group of factor 2.

; struct ST2 {
;  int x;
;  int y;
; };
;
; void test_reversed_load2_store2(struct ST2 *A, struct ST2 *B) {
;   for (int i = 1023; i >= 0; i--) {
;     int a = A[i].x + i;  // interleaved load of index 0
;     int b = A[i].y - i;  // interleaved load of index 1
;     B[i].x = a;          // interleaved store of index 0
;     B[i].y = b;          // interleaved store of index 1
;   }
; }


%struct.ST2 = type { i32, i32 }

define void @test_reversed_load2_store2(ptr noalias nocapture readonly %A, ptr noalias nocapture %B) {
; CHECK-LABEL: @test_reversed_load2_store2(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 1023, i32 1022, i32 1021, i32 1020>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = sub i64 1023, [[INDEX]]
; CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds [[STRUCT_ST2:%.*]], ptr [[A:%.*]], i64 [[OFFSET_IDX]], i32 0
; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[TMP0]], i64 -6
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <8 x i32>, ptr [[TMP1]], align 4
; CHECK-NEXT:    [[STRIDED_VEC:%.*]] = shufflevector <8 x i32> [[WIDE_VEC]], <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
; CHECK-NEXT:    [[REVERSE:%.*]] = shufflevector <4 x i32> [[STRIDED_VEC]], <4 x i32> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
; CHECK-NEXT:    [[STRIDED_VEC1:%.*]] = shufflevector <8 x i32> [[WIDE_VEC]], <8 x i32> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
; CHECK-NEXT:    [[REVERSE2:%.*]] = shufflevector <4 x i32> [[STRIDED_VEC1]], <4 x i32> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
; CHECK-NEXT:    [[TMP2:%.*]] = add nsw <4 x i32> [[REVERSE]], [[VEC_IND]]
; CHECK-NEXT:    [[TMP3:%.*]] = sub nsw <4 x i32> [[REVERSE2]], [[VEC_IND]]
; CHECK-NEXT:    [[TMP4:%.*]] = getelementptr inbounds [[STRUCT_ST2]], ptr [[B:%.*]], i64 [[OFFSET_IDX]], i32 1
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i32, ptr [[TMP4]], i64 -7
; CHECK-NEXT:    [[REVERSE3:%.*]] = shufflevector <4 x i32> [[TMP2]], <4 x i32> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
; CHECK-NEXT:    [[REVERSE4:%.*]] = shufflevector <4 x i32> [[TMP3]], <4 x i32> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
; CHECK-NEXT:    [[INTERLEAVED_VEC:%.*]] = shufflevector <4 x i32> [[REVERSE3]], <4 x i32> [[REVERSE4]], <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>
; CHECK-NEXT:    store <8 x i32> [[INTERLEAVED_VEC]], ptr [[TMP5]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], <i32 -4, i32 -4, i32 -4, i32 -4>
; CHECK-NEXT:    [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1024
; CHECK-NEXT:    br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br i1 true, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       for.body:
; CHECK-NEXT:    br i1 poison, label [[FOR_BODY]], label [[FOR_COND_CLEANUP]], !llvm.loop [[LOOP11:![0-9]+]]
;
entry:
  br label %for.body

for.cond.cleanup:                                 ; preds = %for.body
  ret void

for.body:                                         ; preds = %for.body, %entry
  %indvars.iv = phi i64 [ 1023, %entry ], [ %indvars.iv.next, %for.body ]
  %x = getelementptr inbounds %struct.ST2, ptr %A, i64 %indvars.iv, i32 0
  %tmp = load i32, ptr %x, align 4
  %tmp1 = trunc i64 %indvars.iv to i32
  %add = add nsw i32 %tmp, %tmp1
  %y = getelementptr inbounds %struct.ST2, ptr %A, i64 %indvars.iv, i32 1
  %tmp2 = load i32, ptr %y, align 4
  %sub = sub nsw i32 %tmp2, %tmp1
  %x5 = getelementptr inbounds %struct.ST2, ptr %B, i64 %indvars.iv, i32 0
  store i32 %add, ptr %x5, align 4
  %y8 = getelementptr inbounds %struct.ST2, ptr %B, i64 %indvars.iv, i32 1
  store i32 %sub, ptr %y8, align 4
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %cmp = icmp sgt i64 %indvars.iv, 0
  br i1 %cmp, label %for.body, label %for.cond.cleanup
}

; Check vectorization on an interleaved load group of factor 2 with 1 gap
; (missing the load of odd elements). Because the vectorized loop would
; speculatively access memory out-of-bounds, we must execute at least one
; iteration of the scalar loop.

; void even_load_static_tc(int *A, int *B) {
;  for (unsigned i = 0; i < 1024; i+=2)
;     B[i/2] = A[i] * 2;
; }


define void @even_load_static_tc(ptr noalias nocapture readonly %A, ptr noalias nocapture %B) {
; CHECK-LABEL: @even_load_static_tc(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = shl i64 [[INDEX]], 1
; CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i64 [[OFFSET_IDX]]
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <8 x i32>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[STRIDED_VEC:%.*]] = shufflevector <8 x i32> [[WIDE_VEC]], <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
; CHECK-NEXT:    [[TMP1:%.*]] = shl nsw <4 x i32> [[STRIDED_VEC]], <i32 1, i32 1, i32 1, i32 1>
; CHECK-NEXT:    [[TMP2:%.*]] = and i64 [[INDEX]], 9223372036854775804
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[B:%.*]], i64 [[TMP2]]
; CHECK-NEXT:    store <4 x i32> [[TMP1]], ptr [[TMP3]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], 508
; CHECK-NEXT:    br i1 [[TMP4]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP12:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 1016, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       for.body:
; CHECK-NEXT:    [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[INDVARS_IV]]
; CHECK-NEXT:    [[TMP:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[MUL:%.*]] = shl nsw i32 [[TMP]], 1
; CHECK-NEXT:    [[TMP1:%.*]] = lshr exact i64 [[INDVARS_IV]], 1
; CHECK-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[TMP1]]
; CHECK-NEXT:    store i32 [[MUL]], ptr [[ARRAYIDX2]], align 4
; CHECK-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 2
; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i64 [[INDVARS_IV]], 1022
; CHECK-NEXT:    br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP:%.*]], !llvm.loop [[LOOP13:![0-9]+]]
;
entry:
  br label %for.body

for.cond.cleanup:                                 ; preds = %for.body
  ret void

for.body:                                         ; preds = %for.body, %entry
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %arrayidx = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
  %tmp = load i32, ptr %arrayidx, align 4
  %mul = shl nsw i32 %tmp, 1
  %tmp1 = lshr exact i64 %indvars.iv, 1
  %arrayidx2 = getelementptr inbounds i32, ptr %B, i64 %tmp1
  store i32 %mul, ptr %arrayidx2, align 4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 2
  %cmp = icmp ult i64 %indvars.iv.next, 1024
  br i1 %cmp, label %for.body, label %for.cond.cleanup
}

; Check vectorization on an interleaved load group of factor 2 with 1 gap
; (missing the load of odd elements). Because the vectorized loop would
; speculatively access memory out-of-bounds, we must execute at least one
; iteration of the scalar loop.

; void even_load_dynamic_tc(int *A, int *B, unsigned N) {
;  for (unsigned i = 0; i < N; i+=2)
;     B[i/2] = A[i] * 2;
; }


define void @even_load_dynamic_tc(ptr noalias nocapture readonly %A, ptr noalias nocapture %B, i64 %N) {
; CHECK-LABEL: @even_load_dynamic_tc(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[UMAX:%.*]] = call i64 @llvm.umax.i64(i64 [[N:%.*]], i64 2)
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[UMAX]], 9
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    [[TMP0:%.*]] = add i64 [[UMAX]], -1
; CHECK-NEXT:    [[TMP1:%.*]] = lshr i64 [[TMP0]], 1
; CHECK-NEXT:    [[TMP2:%.*]] = add nuw i64 [[TMP1]], 1
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = and i64 [[TMP2]], 3
; CHECK-NEXT:    [[TMP3:%.*]] = icmp eq i64 [[N_MOD_VF]], 0
; CHECK-NEXT:    [[TMP4:%.*]] = select i1 [[TMP3]], i64 4, i64 [[N_MOD_VF]]
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 [[TMP2]], [[TMP4]]
; CHECK-NEXT:    [[IND_END:%.*]] = shl i64 [[N_VEC]], 1
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = shl i64 [[INDEX]], 1
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i64 [[OFFSET_IDX]]
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <8 x i32>, ptr [[TMP5]], align 4
; CHECK-NEXT:    [[STRIDED_VEC:%.*]] = shufflevector <8 x i32> [[WIDE_VEC]], <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
; CHECK-NEXT:    [[TMP6:%.*]] = shl nsw <4 x i32> [[STRIDED_VEC]], <i32 1, i32 1, i32 1, i32 1>
; CHECK-NEXT:    [[TMP7:%.*]] = and i64 [[INDEX]], 9223372036854775804
; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr inbounds i32, ptr [[B:%.*]], i64 [[TMP7]]
; CHECK-NEXT:    store <4 x i32> [[TMP6]], ptr [[TMP8]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP14:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       for.body:
; CHECK-NEXT:    [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[INDVARS_IV]]
; CHECK-NEXT:    [[TMP:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[MUL:%.*]] = shl nsw i32 [[TMP]], 1
; CHECK-NEXT:    [[TMP1:%.*]] = lshr exact i64 [[INDVARS_IV]], 1
; CHECK-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[TMP1]]
; CHECK-NEXT:    store i32 [[MUL]], ptr [[ARRAYIDX2]], align 4
; CHECK-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 2
; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i64 [[INDVARS_IV_NEXT]], [[N]]
; CHECK-NEXT:    br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP:%.*]], !llvm.loop [[LOOP15:![0-9]+]]
;
entry:
  br label %for.body

for.cond.cleanup:                                 ; preds = %for.body
  ret void

for.body:                                         ; preds = %for.body, %entry
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %arrayidx = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
  %tmp = load i32, ptr %arrayidx, align 4
  %mul = shl nsw i32 %tmp, 1
  %tmp1 = lshr exact i64 %indvars.iv, 1
  %arrayidx2 = getelementptr inbounds i32, ptr %B, i64 %tmp1
  store i32 %mul, ptr %arrayidx2, align 4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 2
  %cmp = icmp ult i64 %indvars.iv.next, %N
  br i1 %cmp, label %for.body, label %for.cond.cleanup
}

; Check vectorization on a reverse interleaved load group of factor 2 with 1
; gap and a reverse interleaved store group of factor 2. The interleaved load
; group should be removed since it has a gap and is reverse.

; struct pair {
;  int x;
;  int y;
; };
;
; void load_gap_reverse(struct pair *P1, struct pair *P2, int X) {
;   for (int i = 1023; i >= 0; i--) {
;     int a = X + i;
;     int b = B[i].y - i;
;     A[i].x = a;
;     B[i].y = b;
;   }
; }


%pair = type { i64, i64 }
define void @load_gap_reverse(ptr noalias nocapture %P1, ptr noalias nocapture %P2, i64 %X) {
; CHECK-LABEL: @load_gap_reverse(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i64> poison, i64 [[X:%.*]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i64> [[BROADCAST_SPLATINSERT]], <4 x i64> poison, <4 x i32> zeroinitializer
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 1023, i64 1022, i64 1021, i64 1020>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = sub i64 1023, [[INDEX]]
; CHECK-NEXT:    [[TMP0:%.*]] = sub i64 1022, [[INDEX]]
; CHECK-NEXT:    [[TMP1:%.*]] = sub i64 1021, [[INDEX]]
; CHECK-NEXT:    [[TMP2:%.*]] = sub i64 1020, [[INDEX]]
; CHECK-NEXT:    [[TMP3:%.*]] = add nsw <4 x i64> [[BROADCAST_SPLAT]], [[VEC_IND]]
; CHECK-NEXT:    [[TMP4:%.*]] = getelementptr inbounds [[PAIR:%.*]], ptr [[P1:%.*]], i64 [[OFFSET_IDX]], i32 0
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds [[PAIR]], ptr [[P1]], i64 [[TMP0]], i32 0
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds [[PAIR]], ptr [[P1]], i64 [[TMP1]], i32 0
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds [[PAIR]], ptr [[P1]], i64 [[TMP2]], i32 0
; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr inbounds [[PAIR]], ptr [[P2:%.*]], i64 [[OFFSET_IDX]], i32 1
; CHECK-NEXT:    [[TMP9:%.*]] = getelementptr inbounds [[PAIR]], ptr [[P2]], i64 [[TMP0]], i32 1
; CHECK-NEXT:    [[TMP10:%.*]] = getelementptr inbounds [[PAIR]], ptr [[P2]], i64 [[TMP1]], i32 1
; CHECK-NEXT:    [[TMP11:%.*]] = getelementptr inbounds [[PAIR]], ptr [[P2]], i64 [[TMP2]], i32 1
; CHECK-NEXT:    [[TMP12:%.*]] = load i64, ptr [[TMP8]], align 8
; CHECK-NEXT:    [[TMP13:%.*]] = load i64, ptr [[TMP9]], align 8
; CHECK-NEXT:    [[TMP14:%.*]] = load i64, ptr [[TMP10]], align 8
; CHECK-NEXT:    [[TMP15:%.*]] = load i64, ptr [[TMP11]], align 8
; CHECK-NEXT:    [[TMP16:%.*]] = insertelement <4 x i64> poison, i64 [[TMP12]], i64 0
; CHECK-NEXT:    [[TMP17:%.*]] = insertelement <4 x i64> [[TMP16]], i64 [[TMP13]], i64 1
; CHECK-NEXT:    [[TMP18:%.*]] = insertelement <4 x i64> [[TMP17]], i64 [[TMP14]], i64 2
; CHECK-NEXT:    [[TMP19:%.*]] = insertelement <4 x i64> [[TMP18]], i64 [[TMP15]], i64 3
; CHECK-NEXT:    [[TMP20:%.*]] = sub nsw <4 x i64> [[TMP19]], [[VEC_IND]]
; CHECK-NEXT:    [[TMP21:%.*]] = extractelement <4 x i64> [[TMP3]], i64 0
; CHECK-NEXT:    store i64 [[TMP21]], ptr [[TMP4]], align 8
; CHECK-NEXT:    [[TMP22:%.*]] = extractelement <4 x i64> [[TMP3]], i64 1
; CHECK-NEXT:    store i64 [[TMP22]], ptr [[TMP5]], align 8
; CHECK-NEXT:    [[TMP23:%.*]] = extractelement <4 x i64> [[TMP3]], i64 2
; CHECK-NEXT:    store i64 [[TMP23]], ptr [[TMP6]], align 8
; CHECK-NEXT:    [[TMP24:%.*]] = extractelement <4 x i64> [[TMP3]], i64 3
; CHECK-NEXT:    store i64 [[TMP24]], ptr [[TMP7]], align 8
; CHECK-NEXT:    [[TMP25:%.*]] = extractelement <4 x i64> [[TMP20]], i64 0
; CHECK-NEXT:    store i64 [[TMP25]], ptr [[TMP8]], align 8
; CHECK-NEXT:    [[TMP26:%.*]] = extractelement <4 x i64> [[TMP20]], i64 1
; CHECK-NEXT:    store i64 [[TMP26]], ptr [[TMP9]], align 8
; CHECK-NEXT:    [[TMP27:%.*]] = extractelement <4 x i64> [[TMP20]], i64 2
; CHECK-NEXT:    store i64 [[TMP27]], ptr [[TMP10]], align 8
; CHECK-NEXT:    [[TMP28:%.*]] = extractelement <4 x i64> [[TMP20]], i64 3
; CHECK-NEXT:    store i64 [[TMP28]], ptr [[TMP11]], align 8
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <4 x i64> [[VEC_IND]], <i64 -4, i64 -4, i64 -4, i64 -4>
; CHECK-NEXT:    [[TMP29:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1024
; CHECK-NEXT:    br i1 [[TMP29]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP16:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br i1 true, label [[FOR_EXIT:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    br i1 poison, label [[FOR_BODY]], label [[FOR_EXIT]], !llvm.loop [[LOOP17:![0-9]+]]
; CHECK:       for.exit:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.body

for.body:
  %i = phi i64 [ 1023, %entry ], [ %i.next, %for.body ]
  %0 = add nsw i64 %X, %i
  %1 = getelementptr inbounds %pair, ptr %P1, i64 %i, i32 0
  %2 = getelementptr inbounds %pair, ptr %P2, i64 %i, i32 1
  %3 = load i64, ptr %2, align 8
  %4 = sub nsw i64 %3, %i
  store i64 %0, ptr %1, align 8
  store i64 %4, ptr %2, align 8
  %i.next = add nsw i64 %i, -1
  %cond = icmp sgt i64 %i, 0
  br i1 %cond, label %for.body, label %for.exit

for.exit:
  ret void
}

; Check vectorization on interleaved access groups identified from mixed
; loads/stores.
; void mixed_load2_store2(int *A, int *B) {
;   for (unsigned i = 0; i < 1024; i+=2)  {
;     B[i] = A[i] * A[i+1];
;     B[i+1] = A[i] + A[i+1];
;   }
; }


define void @mixed_load2_store2(ptr noalias nocapture readonly %A, ptr noalias nocapture %B) {
; CHECK-LABEL: @mixed_load2_store2(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = shl i64 [[INDEX]], 1
; CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i64 [[OFFSET_IDX]]
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <8 x i32>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[STRIDED_VEC:%.*]] = shufflevector <8 x i32> [[WIDE_VEC]], <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
; CHECK-NEXT:    [[STRIDED_VEC1:%.*]] = shufflevector <8 x i32> [[WIDE_VEC]], <8 x i32> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
; CHECK-NEXT:    [[TMP1:%.*]] = or i64 [[OFFSET_IDX]], 1
; CHECK-NEXT:    [[TMP2:%.*]] = mul nsw <4 x i32> [[STRIDED_VEC1]], [[STRIDED_VEC]]
; CHECK-NEXT:    [[STRIDED_VEC3:%.*]] = shufflevector <8 x i32> [[WIDE_VEC]], <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
; CHECK-NEXT:    [[STRIDED_VEC4:%.*]] = shufflevector <8 x i32> [[WIDE_VEC]], <8 x i32> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
; CHECK-NEXT:    [[TMP3:%.*]] = add nsw <4 x i32> [[STRIDED_VEC4]], [[STRIDED_VEC3]]
; CHECK-NEXT:    [[TMP4:%.*]] = getelementptr inbounds i32, ptr [[B:%.*]], i64 [[TMP1]]
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i32, ptr [[TMP4]], i64 -1
; CHECK-NEXT:    [[INTERLEAVED_VEC:%.*]] = shufflevector <4 x i32> [[TMP2]], <4 x i32> [[TMP3]], <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>
; CHECK-NEXT:    store <8 x i32> [[INTERLEAVED_VEC]], ptr [[TMP5]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], 512
; CHECK-NEXT:    br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP18:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br i1 true, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       for.body:
; CHECK-NEXT:    br i1 poison, label [[FOR_BODY]], label [[FOR_COND_CLEANUP]], !llvm.loop [[LOOP19:![0-9]+]]
;
entry:
  br label %for.body

for.cond.cleanup:                                 ; preds = %for.body
  ret void

for.body:                                         ; preds = %for.body, %entry
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %arrayidx = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
  %tmp = load i32, ptr %arrayidx, align 4
  %tmp1 = or i64 %indvars.iv, 1
  %arrayidx2 = getelementptr inbounds i32, ptr %A, i64 %tmp1
  %tmp2 = load i32, ptr %arrayidx2, align 4
  %mul = mul nsw i32 %tmp2, %tmp
  %arrayidx4 = getelementptr inbounds i32, ptr %B, i64 %indvars.iv
  store i32 %mul, ptr %arrayidx4, align 4
  %tmp3 = load i32, ptr %arrayidx, align 4
  %tmp4 = load i32, ptr %arrayidx2, align 4
  %add10 = add nsw i32 %tmp4, %tmp3
  %arrayidx13 = getelementptr inbounds i32, ptr %B, i64 %tmp1
  store i32 %add10, ptr %arrayidx13, align 4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 2
  %cmp = icmp ult i64 %indvars.iv.next, 1024
  br i1 %cmp, label %for.body, label %for.cond.cleanup
}

; Check vectorization on interleaved access groups identified from mixed
; loads/stores.
; void mixed_load3_store3(int *A) {
;   for (unsigned i = 0; i < 1024; i++)  {
;     *A++ += i;
;     *A++ += i;
;     *A++ += i;
;   }
; }


define void @mixed_load3_store3(ptr nocapture %A) {
; CHECK-LABEL: @mixed_load3_store3(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = mul i64 [[INDEX]], 12
; CHECK-NEXT:    [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[A:%.*]], i64 [[TMP0]]
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <12 x i32>, ptr [[NEXT_GEP]], align 4
; CHECK-NEXT:    [[STRIDED_VEC:%.*]] = shufflevector <12 x i32> [[WIDE_VEC]], <12 x i32> poison, <4 x i32> <i32 0, i32 3, i32 6, i32 9>
; CHECK-NEXT:    [[STRIDED_VEC2:%.*]] = shufflevector <12 x i32> [[WIDE_VEC]], <12 x i32> poison, <4 x i32> <i32 1, i32 4, i32 7, i32 10>
; CHECK-NEXT:    [[STRIDED_VEC3:%.*]] = shufflevector <12 x i32> [[WIDE_VEC]], <12 x i32> poison, <4 x i32> <i32 2, i32 5, i32 8, i32 11>
; CHECK-NEXT:    [[TMP1:%.*]] = add <4 x i32> [[STRIDED_VEC]], [[VEC_IND]]
; CHECK-NEXT:    [[TMP2:%.*]] = add <4 x i32> [[STRIDED_VEC2]], [[VEC_IND]]
; CHECK-NEXT:    [[TMP3:%.*]] = add <4 x i32> [[STRIDED_VEC3]], [[VEC_IND]]
; CHECK-NEXT:    [[TMP4:%.*]] = shufflevector <4 x i32> [[TMP1]], <4 x i32> [[TMP2]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT:    [[TMP5:%.*]] = shufflevector <4 x i32> [[TMP3]], <4 x i32> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison>
; CHECK-NEXT:    [[INTERLEAVED_VEC:%.*]] = shufflevector <8 x i32> [[TMP4]], <8 x i32> [[TMP5]], <12 x i32> <i32 0, i32 4, i32 8, i32 1, i32 5, i32 9, i32 2, i32 6, i32 10, i32 3, i32 7, i32 11>
; CHECK-NEXT:    store <12 x i32> [[INTERLEAVED_VEC]], ptr [[NEXT_GEP]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], <i32 4, i32 4, i32 4, i32 4>
; CHECK-NEXT:    [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1024
; CHECK-NEXT:    br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP20:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br i1 true, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       for.body:
; CHECK-NEXT:    br i1 poison, label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop [[LOOP21:![0-9]+]]
;
entry:
  br label %for.body

for.cond.cleanup:                                 ; preds = %for.body
  ret void

for.body:                                         ; preds = %for.body, %entry
  %i.013 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
  %A.addr.012 = phi ptr [ %A, %entry ], [ %incdec.ptr3, %for.body ]
  %incdec.ptr = getelementptr inbounds i32, ptr %A.addr.012, i64 1
  %tmp = load i32, ptr %A.addr.012, align 4
  %add = add i32 %tmp, %i.013
  store i32 %add, ptr %A.addr.012, align 4
  %incdec.ptr1 = getelementptr inbounds i32, ptr %A.addr.012, i64 2
  %tmp1 = load i32, ptr %incdec.ptr, align 4
  %add2 = add i32 %tmp1, %i.013
  store i32 %add2, ptr %incdec.ptr, align 4
  %incdec.ptr3 = getelementptr inbounds i32, ptr %A.addr.012, i64 3
  %tmp2 = load i32, ptr %incdec.ptr1, align 4
  %add4 = add i32 %tmp2, %i.013
  store i32 %add4, ptr %incdec.ptr1, align 4
  %inc = add nuw nsw i32 %i.013, 1
  %exitcond = icmp eq i32 %inc, 1024
  br i1 %exitcond, label %for.cond.cleanup, label %for.body
}

; Check vectorization on interleaved access groups with members having different
; kinds of type.

; struct IntFloat {
;   int a;
;   float b;
; };
;
; int SA;
; float SB;
;
; void int_float_struct(struct IntFloat *A) {
;   int SumA;
;   float SumB;
;   for (unsigned i = 0; i < 1024; i++)  {
;     SumA += A[i].a;
;     SumB += A[i].b;
;   }
;   SA = SumA;
;   SB = SumB;
; }


%struct.IntFloat = type { i32, float }

@SA = common global i32 0, align 4
@SB = common global float 0.000000e+00, align 4

define void @int_float_struct(ptr nocapture readonly %A) #0 {
; CHECK-LABEL: @int_float_struct(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_PHI:%.*]] = phi <4 x float> [ <float undef, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00>, [[VECTOR_PH]] ], [ [[TMP3:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_PHI1:%.*]] = phi <4 x i32> [ <i32 undef, i32 0, i32 0, i32 0>, [[VECTOR_PH]] ], [ [[TMP2:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds [[STRUCT_INTFLOAT:%.*]], ptr [[A:%.*]], i64 [[INDEX]], i32 0
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <8 x i32>, ptr [[TMP0]], align 4
; CHECK-NEXT:    [[STRIDED_VEC:%.*]] = shufflevector <8 x i32> [[WIDE_VEC]], <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
; CHECK-NEXT:    [[STRIDED_VEC2:%.*]] = shufflevector <8 x i32> [[WIDE_VEC]], <8 x i32> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
; CHECK-NEXT:    [[TMP1:%.*]] = bitcast <4 x i32> [[STRIDED_VEC2]] to <4 x float>
; CHECK-NEXT:    [[TMP2]] = add <4 x i32> [[STRIDED_VEC]], [[VEC_PHI1]]
; CHECK-NEXT:    [[TMP3]] = fadd fast <4 x float> [[VEC_PHI]], [[TMP1]]
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP4:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1024
; CHECK-NEXT:    br i1 [[TMP4]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP22:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    [[TMP5:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[TMP2]])
; CHECK-NEXT:    [[TMP6:%.*]] = call fast float @llvm.vector.reduce.fadd.v4f32(float -0.000000e+00, <4 x float> [[TMP3]])
; CHECK-NEXT:    br i1 true, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    [[ADD_LCSSA:%.*]] = phi i32 [ poison, [[FOR_BODY]] ], [ [[TMP5]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT:    [[ADD3_LCSSA:%.*]] = phi float [ poison, [[FOR_BODY]] ], [ [[TMP6]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT:    store i32 [[ADD_LCSSA]], ptr @SA, align 4
; CHECK-NEXT:    store float [[ADD3_LCSSA]], ptr @SB, align 4
; CHECK-NEXT:    ret void
; CHECK:       for.body:
; CHECK-NEXT:    br i1 poison, label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop [[LOOP23:![0-9]+]]
;
entry:
  br label %for.body

for.cond.cleanup:                                 ; preds = %for.body
  store i32 %add, ptr @SA, align 4
  store float %add3, ptr @SB, align 4
  ret void

for.body:                                         ; preds = %for.body, %entry
  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
  %SumB.014 = phi float [ undef, %entry ], [ %add3, %for.body ]
  %SumA.013 = phi i32 [ undef, %entry ], [ %add, %for.body ]
  %a = getelementptr inbounds %struct.IntFloat, ptr %A, i64 %indvars.iv, i32 0
  %tmp = load i32, ptr %a, align 4
  %add = add nsw i32 %tmp, %SumA.013
  %b = getelementptr inbounds %struct.IntFloat, ptr %A, i64 %indvars.iv, i32 1
  %tmp1 = load float, ptr %b, align 4
  %add3 = fadd fast float %SumB.014, %tmp1
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond = icmp eq i64 %indvars.iv.next, 1024
  br i1 %exitcond, label %for.cond.cleanup, label %for.body
}

; Check vectorization of interleaved access groups in the presence of
; dependences (PR27626). The following tests check that we don't reorder
; dependent loads and stores when generating code for interleaved access
; groups. Stores should be scalarized because the required code motion would
; break dependences, and the remaining interleaved load groups should have
; gaps.

; PR27626_0: Ensure a strided store is not moved after a dependent (zero
;            distance) strided load.

; void PR27626_0(struct pair *p, int z, int n) {
;   for (int i = 0; i < n; i++) {
;     p[i].x = z;
;     p[i].y = p[i].x;
;   }
; }


%pair.i32 = type { i32, i32 }
define void @PR27626_0(ptr %p, i32 %z, i64 %n) {
; CHECK-LABEL: @PR27626_0(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[SMAX:%.*]] = call i64 @llvm.smax.i64(i64 [[N:%.*]], i64 1)
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[SMAX]], 5
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = and i64 [[SMAX]], 3
; CHECK-NEXT:    [[TMP0:%.*]] = icmp eq i64 [[N_MOD_VF]], 0
; CHECK-NEXT:    [[TMP1:%.*]] = select i1 [[TMP0]], i64 4, i64 [[N_MOD_VF]]
; CHECK-NEXT:    [[N_VEC:%.*]] = sub nsw i64 [[SMAX]], [[TMP1]]
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP2:%.*]] = or i64 [[INDEX]], 1
; CHECK-NEXT:    [[TMP3:%.*]] = or i64 [[INDEX]], 2
; CHECK-NEXT:    [[TMP4:%.*]] = or i64 [[INDEX]], 3
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds [[PAIR_I32:%.*]], ptr [[P:%.*]], i64 [[INDEX]], i32 0
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP2]], i32 0
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP3]], i32 0
; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP4]], i32 0
; CHECK-NEXT:    [[TMP9:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[INDEX]], i32 1
; CHECK-NEXT:    [[TMP10:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP2]], i32 1
; CHECK-NEXT:    [[TMP11:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP3]], i32 1
; CHECK-NEXT:    [[TMP12:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP4]], i32 1
; CHECK-NEXT:    store i32 [[Z:%.*]], ptr [[TMP5]], align 4
; CHECK-NEXT:    store i32 [[Z]], ptr [[TMP6]], align 4
; CHECK-NEXT:    store i32 [[Z]], ptr [[TMP7]], align 4
; CHECK-NEXT:    store i32 [[Z]], ptr [[TMP8]], align 4
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <8 x i32>, ptr [[TMP5]], align 4
; CHECK-NEXT:    [[TMP13:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 0
; CHECK-NEXT:    store i32 [[TMP13]], ptr [[TMP9]], align 4
; CHECK-NEXT:    [[TMP14:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 2
; CHECK-NEXT:    store i32 [[TMP14]], ptr [[TMP10]], align 4
; CHECK-NEXT:    [[TMP15:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 4
; CHECK-NEXT:    store i32 [[TMP15]], ptr [[TMP11]], align 4
; CHECK-NEXT:    [[TMP16:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 6
; CHECK-NEXT:    store i32 [[TMP16]], ptr [[TMP12]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP17:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP17]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP24:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[I:%.*]] = phi i64 [ [[I_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT:    [[P_I_X:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[I]], i32 0
; CHECK-NEXT:    [[P_I_Y:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[I]], i32 1
; CHECK-NEXT:    store i32 [[Z]], ptr [[P_I_X]], align 4
; CHECK-NEXT:    store i32 [[Z]], ptr [[P_I_Y]], align 4
; CHECK-NEXT:    [[I_NEXT]] = add nuw nsw i64 [[I]], 1
; CHECK-NEXT:    [[COND:%.*]] = icmp slt i64 [[I_NEXT]], [[N]]
; CHECK-NEXT:    br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END:%.*]], !llvm.loop [[LOOP25:![0-9]+]]
; CHECK:       for.end:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.body

for.body:
  %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
  %p_i.x = getelementptr inbounds %pair.i32, ptr %p, i64 %i, i32 0
  %p_i.y = getelementptr inbounds %pair.i32, ptr %p, i64 %i, i32 1
  store i32 %z, ptr %p_i.x, align 4
  %0 = load i32, ptr %p_i.x, align 4
  store i32 %0, ptr %p_i.y, align 4
  %i.next = add nuw nsw i64 %i, 1
  %cond = icmp slt i64 %i.next, %n
  br i1 %cond, label %for.body, label %for.end

for.end:
  ret void
}

; PR27626_1: Ensure a strided load is not moved before a dependent (zero
;            distance) strided store.

; void PR27626_1(struct pair *p, int n) {
;   int s = 0;
;   for (int i = 0; i < n; i++) {
;     p[i].y = p[i].x;
;     s += p[i].y
;   }
; }


define i32 @PR27626_1(ptr %p, i64 %n) {
; CHECK-LABEL: @PR27626_1(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[SMAX:%.*]] = call i64 @llvm.smax.i64(i64 [[N:%.*]], i64 1)
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[SMAX]], 5
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = and i64 [[SMAX]], 3
; CHECK-NEXT:    [[TMP0:%.*]] = icmp eq i64 [[N_MOD_VF]], 0
; CHECK-NEXT:    [[TMP1:%.*]] = select i1 [[TMP0]], i64 4, i64 [[N_MOD_VF]]
; CHECK-NEXT:    [[N_VEC:%.*]] = sub nsw i64 [[SMAX]], [[TMP1]]
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP14:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP2:%.*]] = or i64 [[INDEX]], 1
; CHECK-NEXT:    [[TMP3:%.*]] = or i64 [[INDEX]], 2
; CHECK-NEXT:    [[TMP4:%.*]] = or i64 [[INDEX]], 3
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds [[PAIR_I32:%.*]], ptr [[P:%.*]], i64 [[INDEX]], i32 0
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[INDEX]], i32 1
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP2]], i32 1
; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP3]], i32 1
; CHECK-NEXT:    [[TMP9:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP4]], i32 1
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <8 x i32>, ptr [[TMP5]], align 4
; CHECK-NEXT:    [[TMP10:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 0
; CHECK-NEXT:    store i32 [[TMP10]], ptr [[TMP6]], align 4
; CHECK-NEXT:    [[TMP11:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 2
; CHECK-NEXT:    store i32 [[TMP11]], ptr [[TMP7]], align 4
; CHECK-NEXT:    [[TMP12:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 4
; CHECK-NEXT:    store i32 [[TMP12]], ptr [[TMP8]], align 4
; CHECK-NEXT:    [[TMP13:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 6
; CHECK-NEXT:    store i32 [[TMP13]], ptr [[TMP9]], align 4
; CHECK-NEXT:    [[WIDE_VEC1:%.*]] = load <8 x i32>, ptr [[TMP6]], align 4
; CHECK-NEXT:    [[STRIDED_VEC2:%.*]] = shufflevector <8 x i32> [[WIDE_VEC1]], <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
; CHECK-NEXT:    [[TMP14]] = add <4 x i32> [[STRIDED_VEC2]], [[VEC_PHI]]
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP15:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP15]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP26:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    [[TMP16:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[TMP14]])
; CHECK-NEXT:    br label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ [[TMP16]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[I:%.*]] = phi i64 [ [[I_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT:    [[S:%.*]] = phi i32 [ [[TMP18:%.*]], [[FOR_BODY]] ], [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ]
; CHECK-NEXT:    [[P_I_X:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[I]], i32 0
; CHECK-NEXT:    [[P_I_Y:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[I]], i32 1
; CHECK-NEXT:    [[TMP17:%.*]] = load i32, ptr [[P_I_X]], align 4
; CHECK-NEXT:    store i32 [[TMP17]], ptr [[P_I_Y]], align 4
; CHECK-NEXT:    [[TMP18]] = add nsw i32 [[TMP17]], [[S]]
; CHECK-NEXT:    [[I_NEXT]] = add nuw nsw i64 [[I]], 1
; CHECK-NEXT:    [[COND:%.*]] = icmp slt i64 [[I_NEXT]], [[N]]
; CHECK-NEXT:    br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END:%.*]], !llvm.loop [[LOOP27:![0-9]+]]
; CHECK:       for.end:
; CHECK-NEXT:    ret i32 [[TMP18]]
;
entry:
  br label %for.body

for.body:
  %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
  %s = phi i32 [ %2, %for.body ], [ 0, %entry ]
  %p_i.x = getelementptr inbounds %pair.i32, ptr %p, i64 %i, i32 0
  %p_i.y = getelementptr inbounds %pair.i32, ptr %p, i64 %i, i32 1
  %0 = load i32, ptr %p_i.x, align 4
  store i32 %0, ptr %p_i.y, align 4
  %1 = load i32, ptr %p_i.y, align 4
  %2 = add nsw i32 %1, %s
  %i.next = add nuw nsw i64 %i, 1
  %cond = icmp slt i64 %i.next, %n
  br i1 %cond, label %for.body, label %for.end

for.end:
  %3 = phi i32 [ %2, %for.body ]
  ret i32 %3
}

; PR27626_2: Ensure a strided store is not moved after a dependent (negative
;            distance) strided load.

; void PR27626_2(struct pair *p, int z, int n) {
;   for (int i = 0; i < n; i++) {
;     p[i].x = z;
;     p[i].y = p[i - 1].x;
;   }
; }


define void @PR27626_2(ptr %p, i64 %n, i32 %z) {
; CHECK-LABEL: @PR27626_2(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[SMAX:%.*]] = call i64 @llvm.smax.i64(i64 [[N:%.*]], i64 1)
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[SMAX]], 5
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = and i64 [[SMAX]], 3
; CHECK-NEXT:    [[TMP0:%.*]] = icmp eq i64 [[N_MOD_VF]], 0
; CHECK-NEXT:    [[TMP1:%.*]] = select i1 [[TMP0]], i64 4, i64 [[N_MOD_VF]]
; CHECK-NEXT:    [[N_VEC:%.*]] = sub nsw i64 [[SMAX]], [[TMP1]]
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP2:%.*]] = or i64 [[INDEX]], 1
; CHECK-NEXT:    [[TMP3:%.*]] = or i64 [[INDEX]], 2
; CHECK-NEXT:    [[TMP4:%.*]] = or i64 [[INDEX]], 3
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds [[PAIR_I32:%.*]], ptr [[P:%.*]], i64 [[INDEX]], i32 0
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP2]], i32 0
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP3]], i32 0
; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP4]], i32 0
; CHECK-NEXT:    [[TMP9:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 -1, i32 0
; CHECK-NEXT:    [[TMP10:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[INDEX]], i32 1
; CHECK-NEXT:    [[TMP11:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP2]], i32 1
; CHECK-NEXT:    [[TMP12:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP3]], i32 1
; CHECK-NEXT:    [[TMP13:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP4]], i32 1
; CHECK-NEXT:    store i32 [[Z:%.*]], ptr [[TMP5]], align 4
; CHECK-NEXT:    store i32 [[Z]], ptr [[TMP6]], align 4
; CHECK-NEXT:    store i32 [[Z]], ptr [[TMP7]], align 4
; CHECK-NEXT:    store i32 [[Z]], ptr [[TMP8]], align 4
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <8 x i32>, ptr [[TMP9]], align 4
; CHECK-NEXT:    [[TMP14:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 0
; CHECK-NEXT:    store i32 [[TMP14]], ptr [[TMP10]], align 4
; CHECK-NEXT:    [[TMP15:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 2
; CHECK-NEXT:    store i32 [[TMP15]], ptr [[TMP11]], align 4
; CHECK-NEXT:    [[TMP16:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 4
; CHECK-NEXT:    store i32 [[TMP16]], ptr [[TMP12]], align 4
; CHECK-NEXT:    [[TMP17:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 6
; CHECK-NEXT:    store i32 [[TMP17]], ptr [[TMP13]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP28:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[I:%.*]] = phi i64 [ [[I_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT:    [[P_I_X:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[I]], i32 0
; CHECK-NEXT:    [[P_I_MINUS_1_X:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 -1, i32 0
; CHECK-NEXT:    [[P_I_Y:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[I]], i32 1
; CHECK-NEXT:    store i32 [[Z]], ptr [[P_I_X]], align 4
; CHECK-NEXT:    [[TMP19:%.*]] = load i32, ptr [[P_I_MINUS_1_X]], align 4
; CHECK-NEXT:    store i32 [[TMP19]], ptr [[P_I_Y]], align 4
; CHECK-NEXT:    [[I_NEXT]] = add nuw nsw i64 [[I]], 1
; CHECK-NEXT:    [[COND:%.*]] = icmp slt i64 [[I_NEXT]], [[N]]
; CHECK-NEXT:    br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END:%.*]], !llvm.loop [[LOOP29:![0-9]+]]
; CHECK:       for.end:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.body

for.body:
  %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
  %i_minus_1 = add nuw nsw i64 %i, -1
  %p_i.x = getelementptr inbounds %pair.i32, ptr %p, i64 %i, i32 0
  %p_i_minus_1.x = getelementptr inbounds %pair.i32, ptr %p, i64 %i_minus_1, i32 0
  %p_i.y = getelementptr inbounds %pair.i32, ptr %p, i64 %i, i32 1
  store i32 %z, ptr %p_i.x, align 4
  %0 = load i32, ptr %p_i_minus_1.x, align 4
  store i32 %0, ptr %p_i.y, align 4
  %i.next = add nuw nsw i64 %i, 1
  %cond = icmp slt i64 %i.next, %n
  br i1 %cond, label %for.body, label %for.end

for.end:
  ret void
}

; PR27626_3: Ensure a strided load is not moved before a dependent (negative
;            distance) strided store.

; void PR27626_3(struct pair *p, int z, int n) {
;   for (int i = 0; i < n; i++) {
;     p[i + 1].y = p[i].x;
;     s += p[i].y;
;   }
; }


define i32 @PR27626_3(ptr %p, i64 %n, i32 %z) {
; CHECK-LABEL: @PR27626_3(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[SMAX:%.*]] = call i64 @llvm.smax.i64(i64 [[N:%.*]], i64 1)
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[SMAX]], 5
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = and i64 [[SMAX]], 3
; CHECK-NEXT:    [[TMP0:%.*]] = icmp eq i64 [[N_MOD_VF]], 0
; CHECK-NEXT:    [[TMP1:%.*]] = select i1 [[TMP0]], i64 4, i64 [[N_MOD_VF]]
; CHECK-NEXT:    [[N_VEC:%.*]] = sub nsw i64 [[SMAX]], [[TMP1]]
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 0, i64 1, i64 2, i64 3>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP17:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP2:%.*]] = add nuw nsw <4 x i64> [[VEC_IND]], <i64 1, i64 1, i64 1, i64 1>
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds [[PAIR_I32:%.*]], ptr [[P:%.*]], i64 [[INDEX]], i32 0
; CHECK-NEXT:    [[TMP4:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[INDEX]], i32 1
; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x i64> [[TMP2]], i64 0
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP5]], i32 1
; CHECK-NEXT:    [[TMP7:%.*]] = extractelement <4 x i64> [[TMP2]], i64 1
; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP7]], i32 1
; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <4 x i64> [[TMP2]], i64 2
; CHECK-NEXT:    [[TMP10:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP9]], i32 1
; CHECK-NEXT:    [[TMP11:%.*]] = extractelement <4 x i64> [[TMP2]], i64 3
; CHECK-NEXT:    [[TMP12:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[TMP11]], i32 1
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <8 x i32>, ptr [[TMP3]], align 4
; CHECK-NEXT:    [[TMP13:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 0
; CHECK-NEXT:    store i32 [[TMP13]], ptr [[TMP6]], align 4
; CHECK-NEXT:    [[TMP14:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 2
; CHECK-NEXT:    store i32 [[TMP14]], ptr [[TMP8]], align 4
; CHECK-NEXT:    [[TMP15:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 4
; CHECK-NEXT:    store i32 [[TMP15]], ptr [[TMP10]], align 4
; CHECK-NEXT:    [[TMP16:%.*]] = extractelement <8 x i32> [[WIDE_VEC]], i64 6
; CHECK-NEXT:    store i32 [[TMP16]], ptr [[TMP12]], align 4
; CHECK-NEXT:    [[WIDE_VEC1:%.*]] = load <8 x i32>, ptr [[TMP4]], align 4
; CHECK-NEXT:    [[STRIDED_VEC2:%.*]] = shufflevector <8 x i32> [[WIDE_VEC1]], <8 x i32> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
; CHECK-NEXT:    [[TMP17]] = add <4 x i32> [[STRIDED_VEC2]], [[VEC_PHI]]
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <4 x i64> [[VEC_IND]], <i64 4, i64 4, i64 4, i64 4>
; CHECK-NEXT:    [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP30:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    [[TMP19:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[TMP17]])
; CHECK-NEXT:    br label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    [[BC_MERGE_RDX:%.*]] = phi i32 [ [[TMP19]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[I:%.*]] = phi i64 [ [[I_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT:    [[S:%.*]] = phi i32 [ [[TMP22:%.*]], [[FOR_BODY]] ], [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ]
; CHECK-NEXT:    [[I_PLUS_1:%.*]] = add nuw nsw i64 [[I]], 1
; CHECK-NEXT:    [[P_I_X:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[I]], i32 0
; CHECK-NEXT:    [[P_I_Y:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[I]], i32 1
; CHECK-NEXT:    [[P_I_PLUS_1_Y:%.*]] = getelementptr inbounds [[PAIR_I32]], ptr [[P]], i64 [[I_PLUS_1]], i32 1
; CHECK-NEXT:    [[TMP20:%.*]] = load i32, ptr [[P_I_X]], align 4
; CHECK-NEXT:    store i32 [[TMP20]], ptr [[P_I_PLUS_1_Y]], align 4
; CHECK-NEXT:    [[TMP21:%.*]] = load i32, ptr [[P_I_Y]], align 4
; CHECK-NEXT:    [[TMP22]] = add nsw i32 [[TMP21]], [[S]]
; CHECK-NEXT:    [[I_NEXT]] = add nuw nsw i64 [[I]], 1
; CHECK-NEXT:    [[COND:%.*]] = icmp slt i64 [[I_NEXT]], [[N]]
; CHECK-NEXT:    br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END:%.*]], !llvm.loop [[LOOP31:![0-9]+]]
; CHECK:       for.end:
; CHECK-NEXT:    ret i32 [[TMP22]]
;
entry:
  br label %for.body

for.body:
  %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
  %s = phi i32 [ %2, %for.body ], [ 0, %entry ]
  %i_plus_1 = add nuw nsw i64 %i, 1
  %p_i.x = getelementptr inbounds %pair.i32, ptr %p, i64 %i, i32 0
  %p_i.y = getelementptr inbounds %pair.i32, ptr %p, i64 %i, i32 1
  %p_i_plus_1.y = getelementptr inbounds %pair.i32, ptr %p, i64 %i_plus_1, i32 1
  %0 = load i32, ptr %p_i.x, align 4
  store i32 %0, ptr %p_i_plus_1.y, align 4
  %1 = load i32, ptr %p_i.y, align 4
  %2 = add nsw i32 %1, %s
  %i.next = add nuw nsw i64 %i, 1
  %cond = icmp slt i64 %i.next, %n
  br i1 %cond, label %for.body, label %for.end

for.end:
  %3 = phi i32 [ %2, %for.body ]
  ret i32 %3
}

; PR27626_4: Ensure we form an interleaved group for strided stores in the
;            presence of a write-after-write dependence. We create a group for
;            (2) and (3) while excluding (1).

; void PR27626_4(int *a, int x, int y, int z, int n) {
;   for (int i = 0; i < n; i += 2) {
;     a[i] = x;      // (1)
;     a[i] = y;      // (2)
;     a[i + 1] = z;  // (3)
;   }
; }


define void @PR27626_4(ptr %a, i32 %x, i32 %y, i32 %z, i64 %n) {
; CHECK-LABEL: @PR27626_4(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[SMAX:%.*]] = call i64 @llvm.smax.i64(i64 [[N:%.*]], i64 2)
; CHECK-NEXT:    [[TMP0:%.*]] = add nsw i64 [[SMAX]], -1
; CHECK-NEXT:    [[TMP1:%.*]] = lshr i64 [[TMP0]], 1
; CHECK-NEXT:    [[TMP2:%.*]] = add nuw nsw i64 [[TMP1]], 1
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[SMAX]], 7
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    [[N_VEC:%.*]] = and i64 [[TMP2]], 9223372036854775804
; CHECK-NEXT:    [[IND_END:%.*]] = shl nuw i64 [[N_VEC]], 1
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[Y:%.*]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <4 x i32> poison, i32 [[Z:%.*]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT2:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT1]], <4 x i32> poison, <4 x i32> zeroinitializer
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = shl i64 [[INDEX]], 1
; CHECK-NEXT:    [[TMP3:%.*]] = or i64 [[OFFSET_IDX]], 2
; CHECK-NEXT:    [[TMP4:%.*]] = or i64 [[OFFSET_IDX]], 4
; CHECK-NEXT:    [[TMP5:%.*]] = or i64 [[OFFSET_IDX]], 6
; CHECK-NEXT:    [[TMP6:%.*]] = or i64 [[OFFSET_IDX]], 1
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i64 [[OFFSET_IDX]]
; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP3]]
; CHECK-NEXT:    [[TMP9:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP4]]
; CHECK-NEXT:    [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP5]]
; CHECK-NEXT:    [[TMP11:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP6]]
; CHECK-NEXT:    store i32 [[X:%.*]], ptr [[TMP7]], align 4
; CHECK-NEXT:    store i32 [[X]], ptr [[TMP8]], align 4
; CHECK-NEXT:    store i32 [[X]], ptr [[TMP9]], align 4
; CHECK-NEXT:    store i32 [[X]], ptr [[TMP10]], align 4
; CHECK-NEXT:    [[TMP12:%.*]] = getelementptr inbounds i32, ptr [[TMP11]], i64 -1
; CHECK-NEXT:    [[INTERLEAVED_VEC:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLAT]], <4 x i32> [[BROADCAST_SPLAT2]], <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>
; CHECK-NEXT:    store <8 x i32> [[INTERLEAVED_VEC]], ptr [[TMP12]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP13:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP13]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP32:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[TMP2]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], label [[FOR_END:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[I:%.*]] = phi i64 [ [[I_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT:    [[I_PLUS_1:%.*]] = or i64 [[I]], 1
; CHECK-NEXT:    [[A_I:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[I]]
; CHECK-NEXT:    [[A_I_PLUS_1:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[I_PLUS_1]]
; CHECK-NEXT:    store i32 [[Y]], ptr [[A_I]], align 4
; CHECK-NEXT:    store i32 [[Z]], ptr [[A_I_PLUS_1]], align 4
; CHECK-NEXT:    [[I_NEXT]] = add nuw nsw i64 [[I]], 2
; CHECK-NEXT:    [[COND:%.*]] = icmp slt i64 [[I_NEXT]], [[N]]
; CHECK-NEXT:    br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END]], !llvm.loop [[LOOP33:![0-9]+]]
; CHECK:       for.end:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.body

for.body:
  %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
  %i_plus_1 = add i64 %i, 1
  %a_i = getelementptr inbounds i32, ptr %a, i64 %i
  %a_i_plus_1 = getelementptr inbounds i32, ptr %a, i64 %i_plus_1
  store i32 %x, ptr %a_i, align 4
  store i32 %y, ptr %a_i, align 4
  store i32 %z, ptr %a_i_plus_1, align 4
  %i.next = add nuw nsw i64 %i, 2
  %cond = icmp slt i64 %i.next, %n
  br i1 %cond, label %for.body, label %for.end

for.end:
  ret void
}

; PR27626_5: Ensure we do not form an interleaved group for strided stores in
;            the presence of a write-after-write dependence.

; void PR27626_5(int *a, int x, int y, int z, int n) {
;   for (int i = 3; i < n; i += 2) {
;     a[i - 1] = x;
;     a[i - 3] = y;
;     a[i] = z;
;   }
; }


define void @PR27626_5(ptr %a, i32 %x, i32 %y, i32 %z, i64 %n) {
; CHECK-LABEL: @PR27626_5(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[SMAX:%.*]] = call i64 @llvm.smax.i64(i64 [[N:%.*]], i64 5)
; CHECK-NEXT:    [[TMP0:%.*]] = add nsw i64 [[SMAX]], -4
; CHECK-NEXT:    [[TMP1:%.*]] = lshr i64 [[TMP0]], 1
; CHECK-NEXT:    [[TMP2:%.*]] = add nuw nsw i64 [[TMP1]], 1
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP0]], 6
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    [[N_VEC:%.*]] = and i64 [[TMP2]], 9223372036854775804
; CHECK-NEXT:    [[TMP3:%.*]] = shl nuw i64 [[N_VEC]], 1
; CHECK-NEXT:    [[IND_END:%.*]] = or i64 [[TMP3]], 3
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 3, i64 5, i64 7, i64 9>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP4:%.*]] = shl i64 [[INDEX]], 1
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = or i64 [[TMP4]], 3
; CHECK-NEXT:    [[TMP5:%.*]] = or i64 [[TMP4]], 5
; CHECK-NEXT:    [[TMP6:%.*]] = or i64 [[TMP4]], 7
; CHECK-NEXT:    [[TMP7:%.*]] = add i64 [[TMP4]], 9
; CHECK-NEXT:    [[TMP8:%.*]] = add <4 x i64> [[VEC_IND]], <i64 -1, i64 -1, i64 -1, i64 -1>
; CHECK-NEXT:    [[TMP9:%.*]] = add <4 x i64> [[VEC_IND]], <i64 -3, i64 -3, i64 -3, i64 -3>
; CHECK-NEXT:    [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i64 [[OFFSET_IDX]]
; CHECK-NEXT:    [[TMP11:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP5]]
; CHECK-NEXT:    [[TMP12:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP6]]
; CHECK-NEXT:    [[TMP13:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP7]]
; CHECK-NEXT:    [[TMP14:%.*]] = extractelement <4 x i64> [[TMP8]], i64 0
; CHECK-NEXT:    [[TMP15:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP14]]
; CHECK-NEXT:    [[TMP16:%.*]] = extractelement <4 x i64> [[TMP8]], i64 1
; CHECK-NEXT:    [[TMP17:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP16]]
; CHECK-NEXT:    [[TMP18:%.*]] = extractelement <4 x i64> [[TMP8]], i64 2
; CHECK-NEXT:    [[TMP19:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP18]]
; CHECK-NEXT:    [[TMP20:%.*]] = extractelement <4 x i64> [[TMP8]], i64 3
; CHECK-NEXT:    [[TMP21:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP20]]
; CHECK-NEXT:    [[TMP22:%.*]] = extractelement <4 x i64> [[TMP9]], i64 0
; CHECK-NEXT:    [[TMP23:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP22]]
; CHECK-NEXT:    [[TMP24:%.*]] = extractelement <4 x i64> [[TMP9]], i64 1
; CHECK-NEXT:    [[TMP25:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP24]]
; CHECK-NEXT:    [[TMP26:%.*]] = extractelement <4 x i64> [[TMP9]], i64 2
; CHECK-NEXT:    [[TMP27:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP26]]
; CHECK-NEXT:    [[TMP28:%.*]] = extractelement <4 x i64> [[TMP9]], i64 3
; CHECK-NEXT:    [[TMP29:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP28]]
; CHECK-NEXT:    store i32 [[X:%.*]], ptr [[TMP15]], align 4
; CHECK-NEXT:    store i32 [[X]], ptr [[TMP17]], align 4
; CHECK-NEXT:    store i32 [[X]], ptr [[TMP19]], align 4
; CHECK-NEXT:    store i32 [[X]], ptr [[TMP21]], align 4
; CHECK-NEXT:    store i32 [[Y:%.*]], ptr [[TMP23]], align 4
; CHECK-NEXT:    store i32 [[Y]], ptr [[TMP25]], align 4
; CHECK-NEXT:    store i32 [[Y]], ptr [[TMP27]], align 4
; CHECK-NEXT:    store i32 [[Y]], ptr [[TMP29]], align 4
; CHECK-NEXT:    store i32 [[Z:%.*]], ptr [[TMP10]], align 4
; CHECK-NEXT:    store i32 [[Z]], ptr [[TMP11]], align 4
; CHECK-NEXT:    store i32 [[Z]], ptr [[TMP12]], align 4
; CHECK-NEXT:    store i32 [[Z]], ptr [[TMP13]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <4 x i64> [[VEC_IND]], <i64 8, i64 8, i64 8, i64 8>
; CHECK-NEXT:    [[TMP30:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP30]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP34:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[TMP2]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], label [[FOR_END:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ 3, [[ENTRY:%.*]] ]
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[I:%.*]] = phi i64 [ [[I_NEXT:%.*]], [[FOR_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
; CHECK-NEXT:    [[I_MINUS_1:%.*]] = add i64 [[I]], -1
; CHECK-NEXT:    [[I_MINUS_3:%.*]] = add i64 [[I]], -3
; CHECK-NEXT:    [[A_I:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[I]]
; CHECK-NEXT:    [[A_I_MINUS_1:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[I_MINUS_1]]
; CHECK-NEXT:    [[A_I_MINUS_3:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[I_MINUS_3]]
; CHECK-NEXT:    store i32 [[X]], ptr [[A_I_MINUS_1]], align 4
; CHECK-NEXT:    store i32 [[Y]], ptr [[A_I_MINUS_3]], align 4
; CHECK-NEXT:    store i32 [[Z]], ptr [[A_I]], align 4
; CHECK-NEXT:    [[I_NEXT]] = add nuw nsw i64 [[I]], 2
; CHECK-NEXT:    [[COND:%.*]] = icmp slt i64 [[I_NEXT]], [[N]]
; CHECK-NEXT:    br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END]], !llvm.loop [[LOOP35:![0-9]+]]
; CHECK:       for.end:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.body

for.body:
  %i = phi i64 [ %i.next, %for.body ], [ 3, %entry ]
  %i_minus_1 = sub i64 %i, 1
  %i_minus_3 = sub i64 %i_minus_1, 2
  %a_i = getelementptr inbounds i32, ptr %a, i64 %i
  %a_i_minus_1 = getelementptr inbounds i32, ptr %a, i64 %i_minus_1
  %a_i_minus_3 = getelementptr inbounds i32, ptr %a, i64 %i_minus_3
  store i32 %x, ptr %a_i_minus_1, align 4
  store i32 %y, ptr %a_i_minus_3, align 4
  store i32 %z, ptr %a_i, align 4
  %i.next = add nuw nsw i64 %i, 2
  %cond = icmp slt i64 %i.next, %n
  br i1 %cond, label %for.body, label %for.end

for.end:
  ret void
}

; PR34743: Ensure that a cast which needs to sink after a load that belongs to
; an interleaved group, indeeded gets sunk.

; void PR34743(short *a, int *b, int n) {
;   for (int i = 0, iv = 0; iv < n; i++, iv += 2) {
;     b[i] = a[iv] * a[iv+1] * a[iv+2];
;   }
; }


define void @PR34743(ptr %a, ptr %b, i64 %n) {
; CHECK-LABEL: @PR34743(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[DOTPRE:%.*]] = load i16, ptr [[A:%.*]], align 2
; CHECK-NEXT:    [[TMP0:%.*]] = lshr i64 [[N:%.*]], 1
; CHECK-NEXT:    [[TMP1:%.*]] = add nuw i64 [[TMP0]], 1
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 6
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]]
; CHECK:       vector.memcheck:
; CHECK-NEXT:    [[TMP2:%.*]] = shl i64 [[N]], 1
; CHECK-NEXT:    [[TMP3:%.*]] = and i64 [[TMP2]], -4
; CHECK-NEXT:    [[TMP4:%.*]] = add i64 [[TMP3]], 4
; CHECK-NEXT:    [[SCEVGEP:%.*]] = getelementptr i8, ptr [[B:%.*]], i64 [[TMP4]]
; CHECK-NEXT:    [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[A]], i64 2
; CHECK-NEXT:    [[TMP5:%.*]] = add i64 [[TMP3]], 6
; CHECK-NEXT:    [[SCEVGEP2:%.*]] = getelementptr i8, ptr [[A]], i64 [[TMP5]]
; CHECK-NEXT:    [[BOUND0:%.*]] = icmp ugt ptr [[SCEVGEP2]], [[B]]
; CHECK-NEXT:    [[BOUND1:%.*]] = icmp ult ptr [[SCEVGEP1]], [[SCEVGEP]]
; CHECK-NEXT:    [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]]
; CHECK-NEXT:    br i1 [[FOUND_CONFLICT]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]]
; CHECK:       vector.ph:
; CHECK-NEXT:    [[N_VEC:%.*]] = and i64 [[TMP1]], -4
; CHECK-NEXT:    [[IND_END:%.*]] = shl i64 [[N_VEC]], 1
; CHECK-NEXT:    [[VECTOR_RECUR_INIT:%.*]] = insertelement <4 x i16> poison, i16 [[DOTPRE]], i64 3
; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
; CHECK:       vector.body:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VECTOR_RECUR:%.*]] = phi <4 x i16> [ [[VECTOR_RECUR_INIT]], [[VECTOR_PH]] ], [ [[STRIDED_VEC4:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = shl i64 [[INDEX]], 1
; CHECK-NEXT:    [[TMP6:%.*]] = or i64 [[OFFSET_IDX]], 1
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i16, ptr [[A]], i64 [[TMP6]]
; CHECK-NEXT:    [[WIDE_VEC:%.*]] = load <8 x i16>, ptr [[TMP7]], align 4
; CHECK-NEXT:    [[STRIDED_VEC:%.*]] = shufflevector <8 x i16> [[WIDE_VEC]], <8 x i16> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
; CHECK-NEXT:    [[STRIDED_VEC4]] = shufflevector <8 x i16> [[WIDE_VEC]], <8 x i16> poison, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
; CHECK-NEXT:    [[TMP8:%.*]] = sext <4 x i16> [[STRIDED_VEC]] to <4 x i32>
; CHECK-NEXT:    [[TMP9:%.*]] = shufflevector <4 x i16> [[VECTOR_RECUR]], <4 x i16> [[STRIDED_VEC4]], <4 x i32> <i32 3, i32 4, i32 5, i32 6>
; CHECK-NEXT:    [[TMP10:%.*]] = sext <4 x i16> [[TMP9]] to <4 x i32>
; CHECK-NEXT:    [[TMP11:%.*]] = sext <4 x i16> [[STRIDED_VEC4]] to <4 x i32>
; CHECK-NEXT:    [[TMP12:%.*]] = mul nsw <4 x i32> [[TMP10]], [[TMP8]]
; CHECK-NEXT:    [[TMP13:%.*]] = mul nsw <4 x i32> [[TMP12]], [[TMP11]]
; CHECK-NEXT:    [[TMP14:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[INDEX]]
; CHECK-NEXT:    store <4 x i32> [[TMP13]], ptr [[TMP14]], align 4, !alias.scope !36, !noalias !39
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP15:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP15]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP41:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[TMP1]], [[N_VEC]]
; CHECK-NEXT:    [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <8 x i16> [[WIDE_VEC]], i64 7
; CHECK-NEXT:    br i1 [[CMP_N]], label [[END:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    [[SCALAR_RECUR_INIT:%.*]] = phi i16 [ [[DOTPRE]], [[VECTOR_MEMCHECK]] ], [ [[DOTPRE]], [[ENTRY:%.*]] ], [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 0, [[VECTOR_MEMCHECK]] ], [ 0, [[ENTRY]] ], [ [[IND_END]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT:    [[BC_RESUME_VAL3:%.*]] = phi i64 [ 0, [[VECTOR_MEMCHECK]] ], [ 0, [[ENTRY]] ], [ [[N_VEC]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[SCALAR_RECUR:%.*]] = phi i16 [ [[SCALAR_RECUR_INIT]], [[SCALAR_PH]] ], [ [[LOAD2:%.*]], [[LOOP]] ]
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV2:%.*]], [[LOOP]] ]
; CHECK-NEXT:    [[I:%.*]] = phi i64 [ [[BC_RESUME_VAL3]], [[SCALAR_PH]] ], [ [[I1:%.*]], [[LOOP]] ]
; CHECK-NEXT:    [[CONV:%.*]] = sext i16 [[SCALAR_RECUR]] to i32
; CHECK-NEXT:    [[I1]] = add nuw nsw i64 [[I]], 1
; CHECK-NEXT:    [[IV1:%.*]] = or i64 [[IV]], 1
; CHECK-NEXT:    [[IV2]] = add nuw nsw i64 [[IV]], 2
; CHECK-NEXT:    [[GEP1:%.*]] = getelementptr inbounds i16, ptr [[A]], i64 [[IV1]]
; CHECK-NEXT:    [[LOAD1:%.*]] = load i16, ptr [[GEP1]], align 4
; CHECK-NEXT:    [[CONV1:%.*]] = sext i16 [[LOAD1]] to i32
; CHECK-NEXT:    [[GEP2:%.*]] = getelementptr inbounds i16, ptr [[A]], i64 [[IV2]]
; CHECK-NEXT:    [[LOAD2]] = load i16, ptr [[GEP2]], align 4
; CHECK-NEXT:    [[CONV2:%.*]] = sext i16 [[LOAD2]] to i32
; CHECK-NEXT:    [[MUL01:%.*]] = mul nsw i32 [[CONV]], [[CONV1]]
; CHECK-NEXT:    [[MUL012:%.*]] = mul nsw i32 [[MUL01]], [[CONV2]]
; CHECK-NEXT:    [[ARRAYIDX5:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[I]]
; CHECK-NEXT:    store i32 [[MUL012]], ptr [[ARRAYIDX5]], align 4
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i64 [[IV]], [[N]]
; CHECK-NEXT:    br i1 [[EXITCOND]], label [[END]], label [[LOOP]], !llvm.loop [[LOOP42:![0-9]+]]
; CHECK:       end:
; CHECK-NEXT:    ret void
;
entry:
  %.pre = load i16, ptr %a
  br label %loop

loop:
  %0 = phi i16 [ %.pre, %entry ], [ %load2, %loop ]
  %iv = phi i64 [ 0, %entry ], [ %iv2, %loop ]
  %i = phi i64 [ 0, %entry ], [ %i1, %loop ]
  %conv = sext i16 %0 to i32
  %i1 = add nuw nsw i64 %i, 1
  %iv1 = add nuw nsw i64 %iv, 1
  %iv2 = add nuw nsw i64 %iv, 2
  %gep1 = getelementptr inbounds i16, ptr %a, i64 %iv1
  %load1 = load i16, ptr %gep1, align 4
  %conv1 = sext i16 %load1 to i32
  %gep2 = getelementptr inbounds i16, ptr %a, i64 %iv2
  %load2 = load i16, ptr %gep2, align 4
  %conv2 = sext i16 %load2 to i32
  %mul01 = mul nsw i32 %conv, %conv1
  %mul012 = mul nsw i32 %mul01, %conv2
  %arrayidx5 = getelementptr inbounds i32, ptr %b, i64 %i
  store i32 %mul012, ptr %arrayidx5
  %exitcond = icmp eq i64 %iv, %n
  br i1 %exitcond, label %end, label %loop

end:
  ret void
}

attributes #0 = { "unsafe-fp-math"="true" }