test/Transforms/LoopVectorize/uniform_across_vf_induction1_div_urem.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; RUN: opt -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=8 %s -S | FileCheck %s

; Tests for checking uniformity within a VF.

; for (iv = 0 ; ; iv += 1) B[iv] = A[(iv/2)%3];
; A[(iv/2)%3] is not uniform for VF=8.
define void @ld_div2_urem3_1(ptr noalias %A, ptr noalias %B) {
; CHECK-LABEL: define void @ld_div2_urem3_1
; CHECK-SAME: (ptr noalias [[A:%.*]], ptr noalias [[B:%.*]]) {
; 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 <8 x i64> [ <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT:    [[TMP1:%.*]] = udiv <8 x i64> [[VEC_IND]], splat (i64 2)
; CHECK-NEXT:    [[TMP2:%.*]] = urem <8 x i64> [[TMP1]], splat (i64 3)
; CHECK-NEXT:    [[TMP3:%.*]] = extractelement <8 x i64> [[TMP2]], i32 0
; CHECK-NEXT:    [[TMP4:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP3]]
; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <8 x i64> [[TMP2]], i32 1
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP5]]
; CHECK-NEXT:    [[TMP7:%.*]] = extractelement <8 x i64> [[TMP2]], i32 2
; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP7]]
; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <8 x i64> [[TMP2]], i32 3
; CHECK-NEXT:    [[TMP10:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP9]]
; CHECK-NEXT:    [[TMP11:%.*]] = extractelement <8 x i64> [[TMP2]], i32 4
; CHECK-NEXT:    [[TMP12:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP11]]
; CHECK-NEXT:    [[TMP13:%.*]] = extractelement <8 x i64> [[TMP2]], i32 5
; CHECK-NEXT:    [[TMP14:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP13]]
; CHECK-NEXT:    [[TMP15:%.*]] = extractelement <8 x i64> [[TMP2]], i32 6
; CHECK-NEXT:    [[TMP16:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP15]]
; CHECK-NEXT:    [[TMP17:%.*]] = extractelement <8 x i64> [[TMP2]], i32 7
; CHECK-NEXT:    [[TMP18:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP17]]
; CHECK-NEXT:    [[TMP19:%.*]] = load i64, ptr [[TMP4]], align 8
; CHECK-NEXT:    [[TMP20:%.*]] = load i64, ptr [[TMP6]], align 8
; CHECK-NEXT:    [[TMP21:%.*]] = load i64, ptr [[TMP8]], align 8
; CHECK-NEXT:    [[TMP22:%.*]] = load i64, ptr [[TMP10]], align 8
; CHECK-NEXT:    [[TMP23:%.*]] = load i64, ptr [[TMP12]], align 8
; CHECK-NEXT:    [[TMP24:%.*]] = load i64, ptr [[TMP14]], align 8
; CHECK-NEXT:    [[TMP25:%.*]] = load i64, ptr [[TMP16]], align 8
; CHECK-NEXT:    [[TMP26:%.*]] = load i64, ptr [[TMP18]], align 8
; CHECK-NEXT:    [[TMP27:%.*]] = insertelement <8 x i64> poison, i64 [[TMP19]], i32 0
; CHECK-NEXT:    [[TMP28:%.*]] = insertelement <8 x i64> [[TMP27]], i64 [[TMP20]], i32 1
; CHECK-NEXT:    [[TMP29:%.*]] = insertelement <8 x i64> [[TMP28]], i64 [[TMP21]], i32 2
; CHECK-NEXT:    [[TMP30:%.*]] = insertelement <8 x i64> [[TMP29]], i64 [[TMP22]], i32 3
; CHECK-NEXT:    [[TMP31:%.*]] = insertelement <8 x i64> [[TMP30]], i64 [[TMP23]], i32 4
; CHECK-NEXT:    [[TMP32:%.*]] = insertelement <8 x i64> [[TMP31]], i64 [[TMP24]], i32 5
; CHECK-NEXT:    [[TMP33:%.*]] = insertelement <8 x i64> [[TMP32]], i64 [[TMP25]], i32 6
; CHECK-NEXT:    [[TMP34:%.*]] = insertelement <8 x i64> [[TMP33]], i64 [[TMP26]], i32 7
; CHECK-NEXT:    [[TMP35:%.*]] = add nsw <8 x i64> [[TMP34]], splat (i64 42)
; CHECK-NEXT:    [[TMP36:%.*]] = getelementptr inbounds i64, ptr [[B]], i64 [[TMP0]]
; CHECK-NEXT:    [[TMP37:%.*]] = getelementptr inbounds i64, ptr [[TMP36]], i32 0
; CHECK-NEXT:    store <8 x i64> [[TMP35]], ptr [[TMP37]], align 8
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <8 x i64> [[VEC_IND]], splat (i64 8)
; CHECK-NEXT:    [[TMP38:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1000
; CHECK-NEXT:    br i1 [[TMP38]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br i1 true, label [[EXIT:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 1000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT:    [[DIV:%.*]] = udiv i64 [[IV]], 2
; CHECK-NEXT:    [[REM:%.*]] = urem i64 [[DIV]], 3
; CHECK-NEXT:    [[GEP_LD:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[REM]]
; CHECK-NEXT:    [[LD:%.*]] = load i64, ptr [[GEP_LD]], align 8
; CHECK-NEXT:    [[CALC:%.*]] = add nsw i64 [[LD]], 42
; CHECK-NEXT:    [[GEP_ST:%.*]] = getelementptr inbounds i64, ptr [[B]], i64 [[IV]]
; CHECK-NEXT:    store i64 [[CALC]], ptr [[GEP_ST]], align 8
; CHECK-NEXT:    [[IV_NEXT]] = add nsw i64 [[IV]], 1
; CHECK-NEXT:    [[COND:%.*]] = icmp eq i64 [[IV_NEXT]], 1000
; CHECK-NEXT:    br i1 [[COND]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop
loop:
  %iv = phi i64 [ 0, %entry ], [ %iv_next, %loop ]
  %div = udiv i64 %iv, 2
  %rem = urem i64 %div, 3
  %gep_ld = getelementptr inbounds i64, ptr %A, i64 %rem
  %ld = load i64, ptr %gep_ld, align 8
  %calc = add nsw i64 %ld, 42
  %gep_st = getelementptr inbounds i64, ptr %B, i64 %iv
  store i64 %calc, ptr %gep_st, align 8
  %iv_next = add nsw i64 %iv, 1
  %cond = icmp eq i64 %iv_next, 1000
  br i1 %cond, label %exit, label %loop
exit:
  ret void
}

; for (iv = 0 ; ; iv += 1) B[iv] = A[((iv++)/2)%3];
define void @ld_div2_urem3_2(ptr noalias %A, ptr noalias %B) {
; CHECK-LABEL: define void @ld_div2_urem3_2
; CHECK-SAME: (ptr noalias [[A:%.*]], ptr noalias [[B:%.*]]) {
; 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 <8 x i64> [ <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT:    [[TMP1:%.*]] = add nsw <8 x i64> [[VEC_IND]], splat (i64 1)
; CHECK-NEXT:    [[TMP2:%.*]] = udiv <8 x i64> [[TMP1]], splat (i64 2)
; CHECK-NEXT:    [[TMP3:%.*]] = urem <8 x i64> [[TMP2]], splat (i64 3)
; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <8 x i64> [[TMP3]], i32 0
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP4]]
; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i64> [[TMP3]], i32 1
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP6]]
; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <8 x i64> [[TMP3]], i32 2
; CHECK-NEXT:    [[TMP9:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP8]]
; CHECK-NEXT:    [[TMP10:%.*]] = extractelement <8 x i64> [[TMP3]], i32 3
; CHECK-NEXT:    [[TMP11:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP10]]
; CHECK-NEXT:    [[TMP12:%.*]] = extractelement <8 x i64> [[TMP3]], i32 4
; CHECK-NEXT:    [[TMP13:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP12]]
; CHECK-NEXT:    [[TMP14:%.*]] = extractelement <8 x i64> [[TMP3]], i32 5
; CHECK-NEXT:    [[TMP15:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP14]]
; CHECK-NEXT:    [[TMP16:%.*]] = extractelement <8 x i64> [[TMP3]], i32 6
; CHECK-NEXT:    [[TMP17:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP16]]
; CHECK-NEXT:    [[TMP18:%.*]] = extractelement <8 x i64> [[TMP3]], i32 7
; CHECK-NEXT:    [[TMP19:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP18]]
; CHECK-NEXT:    [[TMP20:%.*]] = load i64, ptr [[TMP5]], align 8
; CHECK-NEXT:    [[TMP21:%.*]] = load i64, ptr [[TMP7]], align 8
; CHECK-NEXT:    [[TMP22:%.*]] = load i64, ptr [[TMP9]], align 8
; CHECK-NEXT:    [[TMP23:%.*]] = load i64, ptr [[TMP11]], align 8
; CHECK-NEXT:    [[TMP24:%.*]] = load i64, ptr [[TMP13]], align 8
; CHECK-NEXT:    [[TMP25:%.*]] = load i64, ptr [[TMP15]], align 8
; CHECK-NEXT:    [[TMP26:%.*]] = load i64, ptr [[TMP17]], align 8
; CHECK-NEXT:    [[TMP27:%.*]] = load i64, ptr [[TMP19]], align 8
; CHECK-NEXT:    [[TMP28:%.*]] = insertelement <8 x i64> poison, i64 [[TMP20]], i32 0
; CHECK-NEXT:    [[TMP29:%.*]] = insertelement <8 x i64> [[TMP28]], i64 [[TMP21]], i32 1
; CHECK-NEXT:    [[TMP30:%.*]] = insertelement <8 x i64> [[TMP29]], i64 [[TMP22]], i32 2
; CHECK-NEXT:    [[TMP31:%.*]] = insertelement <8 x i64> [[TMP30]], i64 [[TMP23]], i32 3
; CHECK-NEXT:    [[TMP32:%.*]] = insertelement <8 x i64> [[TMP31]], i64 [[TMP24]], i32 4
; CHECK-NEXT:    [[TMP33:%.*]] = insertelement <8 x i64> [[TMP32]], i64 [[TMP25]], i32 5
; CHECK-NEXT:    [[TMP34:%.*]] = insertelement <8 x i64> [[TMP33]], i64 [[TMP26]], i32 6
; CHECK-NEXT:    [[TMP35:%.*]] = insertelement <8 x i64> [[TMP34]], i64 [[TMP27]], i32 7
; CHECK-NEXT:    [[TMP36:%.*]] = add nsw <8 x i64> [[TMP35]], splat (i64 42)
; CHECK-NEXT:    [[TMP37:%.*]] = getelementptr inbounds i64, ptr [[B]], i64 [[TMP0]]
; CHECK-NEXT:    [[TMP38:%.*]] = getelementptr inbounds i64, ptr [[TMP37]], i32 0
; CHECK-NEXT:    store <8 x i64> [[TMP36]], ptr [[TMP38]], align 8
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <8 x i64> [[VEC_IND]], splat (i64 8)
; CHECK-NEXT:    [[TMP39:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1000
; CHECK-NEXT:    br i1 [[TMP39]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br i1 true, label [[EXIT:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 1000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT:    [[IV_NEXT]] = add nsw i64 [[IV]], 1
; CHECK-NEXT:    [[DIV:%.*]] = udiv i64 [[IV_NEXT]], 2
; CHECK-NEXT:    [[REM:%.*]] = urem i64 [[DIV]], 3
; CHECK-NEXT:    [[GEP_LD:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[REM]]
; CHECK-NEXT:    [[LD:%.*]] = load i64, ptr [[GEP_LD]], align 8
; CHECK-NEXT:    [[CALC:%.*]] = add nsw i64 [[LD]], 42
; CHECK-NEXT:    [[GEP_ST:%.*]] = getelementptr inbounds i64, ptr [[B]], i64 [[IV]]
; CHECK-NEXT:    store i64 [[CALC]], ptr [[GEP_ST]], align 8
; CHECK-NEXT:    [[COND:%.*]] = icmp eq i64 [[IV_NEXT]], 1000
; CHECK-NEXT:    br i1 [[COND]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop
loop:
  %iv = phi i64 [ 0, %entry ], [ %iv_next, %loop ]
  %iv_next = add nsw i64 %iv, 1
  %div = udiv i64 %iv_next, 2
  %rem = urem i64 %div, 3
  %gep_ld = getelementptr inbounds i64, ptr %A, i64 %rem
  %ld = load i64, ptr %gep_ld, align 8
  %calc = add nsw i64 %ld, 42
  %gep_st = getelementptr inbounds i64, ptr %B, i64 %iv
  store i64 %calc, ptr %gep_st, align 8
  %cond = icmp eq i64 %iv_next, 1000
  br i1 %cond, label %exit, label %loop
exit:
  ret void
}

; for (iv = 0 ; ; iv += 1) B[iv] = A[(iv/4)];
define void @ld_div4(ptr noalias %A, ptr noalias %B) {
; CHECK-LABEL: define void @ld_div4
; CHECK-SAME: (ptr noalias [[A:%.*]], ptr noalias [[B:%.*]]) {
; 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 <8 x i64> [ <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT:    [[TMP1:%.*]] = udiv <8 x i64> [[VEC_IND]], splat (i64 4)
; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <8 x i64> [[TMP1]], i32 0
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP2]]
; CHECK-NEXT:    [[TMP4:%.*]] = extractelement <8 x i64> [[TMP1]], i32 1
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP4]]
; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <8 x i64> [[TMP1]], i32 2
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP6]]
; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <8 x i64> [[TMP1]], i32 3
; CHECK-NEXT:    [[TMP9:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP8]]
; CHECK-NEXT:    [[TMP10:%.*]] = extractelement <8 x i64> [[TMP1]], i32 4
; CHECK-NEXT:    [[TMP11:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP10]]
; CHECK-NEXT:    [[TMP12:%.*]] = extractelement <8 x i64> [[TMP1]], i32 5
; CHECK-NEXT:    [[TMP13:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP12]]
; CHECK-NEXT:    [[TMP14:%.*]] = extractelement <8 x i64> [[TMP1]], i32 6
; CHECK-NEXT:    [[TMP15:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP14]]
; CHECK-NEXT:    [[TMP16:%.*]] = extractelement <8 x i64> [[TMP1]], i32 7
; CHECK-NEXT:    [[TMP17:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP16]]
; CHECK-NEXT:    [[TMP18:%.*]] = load i64, ptr [[TMP3]], align 8
; CHECK-NEXT:    [[TMP19:%.*]] = load i64, ptr [[TMP5]], align 8
; CHECK-NEXT:    [[TMP20:%.*]] = load i64, ptr [[TMP7]], align 8
; CHECK-NEXT:    [[TMP21:%.*]] = load i64, ptr [[TMP9]], align 8
; CHECK-NEXT:    [[TMP22:%.*]] = load i64, ptr [[TMP11]], align 8
; CHECK-NEXT:    [[TMP23:%.*]] = load i64, ptr [[TMP13]], align 8
; CHECK-NEXT:    [[TMP24:%.*]] = load i64, ptr [[TMP15]], align 8
; CHECK-NEXT:    [[TMP25:%.*]] = load i64, ptr [[TMP17]], align 8
; CHECK-NEXT:    [[TMP26:%.*]] = insertelement <8 x i64> poison, i64 [[TMP18]], i32 0
; CHECK-NEXT:    [[TMP27:%.*]] = insertelement <8 x i64> [[TMP26]], i64 [[TMP19]], i32 1
; CHECK-NEXT:    [[TMP28:%.*]] = insertelement <8 x i64> [[TMP27]], i64 [[TMP20]], i32 2
; CHECK-NEXT:    [[TMP29:%.*]] = insertelement <8 x i64> [[TMP28]], i64 [[TMP21]], i32 3
; CHECK-NEXT:    [[TMP30:%.*]] = insertelement <8 x i64> [[TMP29]], i64 [[TMP22]], i32 4
; CHECK-NEXT:    [[TMP31:%.*]] = insertelement <8 x i64> [[TMP30]], i64 [[TMP23]], i32 5
; CHECK-NEXT:    [[TMP32:%.*]] = insertelement <8 x i64> [[TMP31]], i64 [[TMP24]], i32 6
; CHECK-NEXT:    [[TMP33:%.*]] = insertelement <8 x i64> [[TMP32]], i64 [[TMP25]], i32 7
; CHECK-NEXT:    [[TMP34:%.*]] = add nsw <8 x i64> [[TMP33]], splat (i64 42)
; CHECK-NEXT:    [[TMP35:%.*]] = getelementptr inbounds i64, ptr [[B]], i64 [[TMP0]]
; CHECK-NEXT:    [[TMP36:%.*]] = getelementptr inbounds i64, ptr [[TMP35]], i32 0
; CHECK-NEXT:    store <8 x i64> [[TMP34]], ptr [[TMP36]], align 8
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <8 x i64> [[VEC_IND]], splat (i64 8)
; CHECK-NEXT:    [[TMP37:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1000
; CHECK-NEXT:    br i1 [[TMP37]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK:       middle.block:
; CHECK-NEXT:    br i1 true, label [[EXIT:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 1000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT:    [[DIV:%.*]] = udiv i64 [[IV]], 4
; CHECK-NEXT:    [[GEP_LD:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[DIV]]
; CHECK-NEXT:    [[LD:%.*]] = load i64, ptr [[GEP_LD]], align 8
; CHECK-NEXT:    [[CALC:%.*]] = add nsw i64 [[LD]], 42
; CHECK-NEXT:    [[GEP_ST:%.*]] = getelementptr inbounds i64, ptr [[B]], i64 [[IV]]
; CHECK-NEXT:    store i64 [[CALC]], ptr [[GEP_ST]], align 8
; CHECK-NEXT:    [[IV_NEXT]] = add nsw i64 [[IV]], 1
; CHECK-NEXT:    [[COND:%.*]] = icmp eq i64 [[IV_NEXT]], 1000
; CHECK-NEXT:    br i1 [[COND]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop
loop:
  %iv = phi i64 [ 0, %entry ], [ %iv_next, %loop ]
  %div = udiv i64 %iv, 4
  %gep_ld = getelementptr inbounds i64, ptr %A, i64 %div
  %ld = load i64, ptr %gep_ld, align 8
  %calc = add nsw i64 %ld, 42
  %gep_st = getelementptr inbounds i64, ptr %B, i64 %iv
  store i64 %calc, ptr %gep_st, align 8
  %iv_next = add nsw i64 %iv, 1
  %cond = icmp eq i64 %iv_next, 1000
  br i1 %cond, label %exit, label %loop
exit:
  ret void
}

; for (iv = 0 ; ; iv += 1) B[iv] = A[(iv/8)%3];
; A[(iv/8)%3] is uniform for VF=8.
define void @ld_div8_urem3(ptr noalias %A, ptr noalias %B) {
; CHECK-LABEL: define void @ld_div8_urem3
; CHECK-SAME: (ptr noalias [[A:%.*]], ptr noalias [[B:%.*]]) {
; 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:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT:    [[TMP1:%.*]] = udiv i64 [[TMP0]], 8
; CHECK-NEXT:    [[TMP2:%.*]] = urem i64 [[TMP1]], 3
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP2]]
; CHECK-NEXT:    [[TMP4:%.*]] = load i64, ptr [[TMP3]], align 8
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <8 x i64> poison, i64 [[TMP4]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <8 x i64> [[BROADCAST_SPLATINSERT]], <8 x i64> poison, <8 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP5:%.*]] = add nsw <8 x i64> [[BROADCAST_SPLAT]], splat (i64 42)
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds i64, ptr [[B]], i64 [[TMP0]]
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i64, ptr [[TMP6]], i32 0
; CHECK-NEXT:    store <8 x i64> [[TMP5]], ptr [[TMP7]], align 8
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; CHECK-NEXT:    [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1000
; 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 [[EXIT:%.*]], label [[SCALAR_PH]]
; CHECK:       scalar.ph:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 1000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT:    [[DIV:%.*]] = udiv i64 [[IV]], 8
; CHECK-NEXT:    [[REM:%.*]] = urem i64 [[DIV]], 3
; CHECK-NEXT:    [[GEP_LD:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[REM]]
; CHECK-NEXT:    [[LD:%.*]] = load i64, ptr [[GEP_LD]], align 8
; CHECK-NEXT:    [[CALC:%.*]] = add nsw i64 [[LD]], 42
; CHECK-NEXT:    [[GEP_ST:%.*]] = getelementptr inbounds i64, ptr [[B]], i64 [[IV]]
; CHECK-NEXT:    store i64 [[CALC]], ptr [[GEP_ST]], align 8
; CHECK-NEXT:    [[IV_NEXT]] = add nsw i64 [[IV]], 1
; CHECK-NEXT:    [[COND:%.*]] = icmp eq i64 [[IV_NEXT]], 1000
; CHECK-NEXT:    br i1 [[COND]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop
loop:
  %iv = phi i64 [ 0, %entry ], [ %iv_next, %loop ]
  %div = udiv i64 %iv, 8
  %rem = urem i64 %div, 3
  %gep_ld = getelementptr inbounds i64, ptr %A, i64 %rem
  %ld = load i64, ptr %gep_ld, align 8
  %calc = add nsw i64 %ld, 42
  %gep_st = getelementptr inbounds i64, ptr %B, i64 %iv
  store i64 %calc, ptr %gep_st, align 8
  %iv_next = add nsw i64 %iv, 1
  %cond = icmp eq i64 %iv_next, 1000
  br i1 %cond, label %exit, label %loop
exit:
  ret void
}