test/Transforms/LoopVectorize/induction-step.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt < %s -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=8 -S | FileCheck %s

; int int_inc;
;
;void induction_with_global(int init, int *restrict A, int N) {
;  int x = init;
;  for (int i=0;i<N;i++){
;    A[i] = x;
;    x += int_inc;
;  }
;}


target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"


@int_inc = common global i32 0, align 4

define void @induction_with_global(i32 %init, ptr noalias nocapture %A, i32 %N) {
; CHECK-LABEL: define void @induction_with_global(
; CHECK-SAME: i32 [[INIT:%.*]], ptr noalias nocapture [[A:%.*]], i32 [[N:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr @int_inc, align 4
; CHECK-NEXT:    [[TMP1:%.*]] = add i32 [[N]], -1
; CHECK-NEXT:    [[TMP5:%.*]] = zext i32 [[TMP1]] to i64
; CHECK-NEXT:    [[TMP2:%.*]] = add nuw nsw i64 [[TMP5]], 1
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP2]], 8
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[TMP2]], 8
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 [[TMP2]], [[N_MOD_VF]]
; CHECK-NEXT:    [[DOTCAST:%.*]] = trunc i64 [[N_VEC]] to i32
; CHECK-NEXT:    [[TMP3:%.*]] = mul i32 [[DOTCAST]], [[TMP0]]
; CHECK-NEXT:    [[TMP4:%.*]] = add i32 [[INIT]], [[TMP3]]
; CHECK-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <8 x i32> poison, i32 [[INIT]], i64 0
; CHECK-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <8 x i32> [[DOTSPLATINSERT]], <8 x i32> poison, <8 x i32> zeroinitializer
; CHECK-NEXT:    [[DOTSPLATINSERT2:%.*]] = insertelement <8 x i32> poison, i32 [[TMP0]], i64 0
; CHECK-NEXT:    [[DOTSPLAT3:%.*]] = shufflevector <8 x i32> [[DOTSPLATINSERT2]], <8 x i32> poison, <8 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP6:%.*]] = mul <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>, [[DOTSPLAT3]]
; CHECK-NEXT:    [[INDUCTION4:%.*]] = add <8 x i32> [[DOTSPLAT]], [[TMP6]]
; CHECK-NEXT:    [[TMP7:%.*]] = mul i32 [[TMP0]], 8
; CHECK-NEXT:    [[DOTSPLATINSERT5:%.*]] = insertelement <8 x i32> poison, i32 [[TMP7]], i64 0
; CHECK-NEXT:    [[DOTSPLAT6:%.*]] = shufflevector <8 x i32> [[DOTSPLATINSERT5]], <8 x i32> poison, <8 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 <8 x i32> [ [[INDUCTION4]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP8:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT:    [[TMP9:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP8]]
; CHECK-NEXT:    [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[TMP9]], i32 0
; CHECK-NEXT:    store <8 x i32> [[VEC_IND]], ptr [[TMP10]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <8 x i32> [[VEC_IND]], [[DOTSPLAT6]]
; CHECK-NEXT:    [[TMP12:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP12]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[TMP2]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT:    [[BC_RESUME_VAL5:%.*]] = phi i32 [ [[TMP4]], %[[MIDDLE_BLOCK]] ], [ [[INIT]], %[[ENTRY]] ]
; CHECK-NEXT:    br label %[[FOR_BODY:.*]]
; CHECK:       [[FOR_BODY]]:
; CHECK-NEXT:    [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], %[[FOR_BODY]] ]
; CHECK-NEXT:    [[X_05:%.*]] = phi i32 [ [[BC_RESUME_VAL5]], %[[SCALAR_PH]] ], [ [[ADD:%.*]], %[[FOR_BODY]] ]
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[INDVARS_IV]]
; CHECK-NEXT:    store i32 [[X_05]], ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[ADD]] = add nsw i32 [[TMP0]], [[X_05]]
; CHECK-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT:    [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]]
; CHECK-NEXT:    br i1 [[EXITCOND]], label %[[EXIT]], label %[[FOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  %0 = load i32, ptr @int_inc, align 4
  br label %for.body

for.body:                                         ; preds = %for.body, %entry
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
  %x.05 = phi i32 [ %init, %entry ], [ %add, %for.body ]
  %arrayidx = getelementptr inbounds i32, ptr %A, i64 %iv
  store i32 %x.05, ptr %arrayidx, align 4
  %add = add nsw i32 %0, %x.05
  %iv.next = add nuw nsw i64 %iv, 1
  %iv.next.trunc = trunc i64 %iv.next to i32
  %exitcond = icmp eq i32 %iv.next.trunc, %N
  br i1 %exitcond, label %exit, label %for.body

exit:
  ret void
}

;int induction_with_loop_inv(int init, int *restrict A, int N, int M) {
;  int x = init;
;  for (int j = 0; j < M; j++) {
;    for (int i=0; i<N; i++){
;      A[i] = x;
;      x += j; // induction step is a loop invariant variable
;    }
;  }
;  return x;
;}

define i32 @induction_with_loop_inv(i32 %init, ptr noalias nocapture %A, i32 %N, i32 %M) {
; CHECK-LABEL: define i32 @induction_with_loop_inv(
; CHECK-SAME: i32 [[INIT:%.*]], ptr noalias nocapture [[A:%.*]], i32 [[N:%.*]], i32 [[M:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[TMP3:%.*]] = add i32 [[N]], -1
; CHECK-NEXT:    [[TMP11:%.*]] = zext i32 [[TMP3]] to i64
; CHECK-NEXT:    [[TMP0:%.*]] = add nuw nsw i64 [[TMP11]], 1
; CHECK-NEXT:    br label %[[OUTER_HEADER:.*]]
; CHECK:       [[OUTER_HEADER]]:
; CHECK-NEXT:    [[INDVARS_IV15:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[INDVARS_IV_NEXT16:%.*]], %[[OUTER_LATCH:.*]] ]
; CHECK-NEXT:    [[J_012:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[INC5:%.*]], %[[OUTER_LATCH]] ]
; CHECK-NEXT:    [[X_011:%.*]] = phi i32 [ [[INIT]], %[[ENTRY]] ], [ [[X_0_LCSSA:%.*]], %[[OUTER_LATCH]] ]
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP0]], 8
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[TMP0]], 8
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 [[TMP0]], [[N_MOD_VF]]
; CHECK-NEXT:    [[DOTCAST:%.*]] = trunc i64 [[N_VEC]] to i32
; CHECK-NEXT:    [[TMP1:%.*]] = mul i32 [[DOTCAST]], [[J_012]]
; CHECK-NEXT:    [[TMP2:%.*]] = add i32 [[X_011]], [[TMP1]]
; CHECK-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <8 x i32> poison, i32 [[X_011]], i64 0
; CHECK-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <8 x i32> [[DOTSPLATINSERT]], <8 x i32> poison, <8 x i32> zeroinitializer
; CHECK-NEXT:    [[DOTSPLATINSERT2:%.*]] = insertelement <8 x i32> poison, i32 [[J_012]], i64 0
; CHECK-NEXT:    [[DOTSPLAT3:%.*]] = shufflevector <8 x i32> [[DOTSPLATINSERT2]], <8 x i32> poison, <8 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP4:%.*]] = mul <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>, [[DOTSPLAT3]]
; CHECK-NEXT:    [[INDUCTION4:%.*]] = add <8 x i32> [[DOTSPLAT]], [[TMP4]]
; CHECK-NEXT:    [[TMP5:%.*]] = mul i32 [[J_012]], 8
; CHECK-NEXT:    [[DOTSPLATINSERT5:%.*]] = insertelement <8 x i32> poison, i32 [[TMP5]], i64 0
; CHECK-NEXT:    [[DOTSPLAT6:%.*]] = shufflevector <8 x i32> [[DOTSPLATINSERT5]], <8 x i32> poison, <8 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 <8 x i32> [ [[INDUCTION4]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP6:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP6]]
; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr inbounds i32, ptr [[TMP7]], i32 0
; CHECK-NEXT:    store <8 x i32> [[VEC_IND]], ptr [[TMP8]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <8 x i32> [[VEC_IND]], [[DOTSPLAT6]]
; CHECK-NEXT:    [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP10]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[TMP0]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], label %[[INNER_EXIT:.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[OUTER_HEADER]] ]
; CHECK-NEXT:    [[BC_RESUME_VAL5:%.*]] = phi i32 [ [[TMP2]], %[[MIDDLE_BLOCK]] ], [ [[X_011]], %[[OUTER_HEADER]] ]
; CHECK-NEXT:    br label %[[INNER:.*]]
; CHECK:       [[INNER]]:
; CHECK-NEXT:    [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], %[[INNER]] ]
; CHECK-NEXT:    [[X_18:%.*]] = phi i32 [ [[BC_RESUME_VAL5]], %[[SCALAR_PH]] ], [ [[ADD:%.*]], %[[INNER]] ]
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[INDVARS_IV]]
; CHECK-NEXT:    store i32 [[X_18]], ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[ADD]] = add nsw i32 [[X_18]], [[J_012]]
; CHECK-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT:    [[LFTR_WIDEIV:%.*]] = trunc i64 [[INDVARS_IV_NEXT]] to i32
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[LFTR_WIDEIV]], [[N]]
; CHECK-NEXT:    br i1 [[EXITCOND]], label %[[INNER_EXIT]], label %[[INNER]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK:       [[INNER_EXIT]]:
; CHECK-NEXT:    [[TMP9:%.*]] = add i32 [[X_011]], [[INDVARS_IV15]]
; CHECK-NEXT:    br label %[[OUTER_LATCH]]
; CHECK:       [[OUTER_LATCH]]:
; CHECK-NEXT:    [[X_0_LCSSA]] = phi i32 [ [[TMP9]], %[[INNER_EXIT]] ]
; CHECK-NEXT:    [[INC5]] = add nuw nsw i32 [[J_012]], 1
; CHECK-NEXT:    [[INDVARS_IV_NEXT16]] = add i32 [[INDVARS_IV15]], [[N]]
; CHECK-NEXT:    [[EXITCOND17:%.*]] = icmp eq i32 [[INC5]], [[M]]
; CHECK-NEXT:    br i1 [[EXITCOND17]], label %[[EXIT:.*]], label %[[OUTER_HEADER]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret i32 [[X_0_LCSSA]]
;
entry:
  br label %outer.header

outer.header:
  %outer.iv = phi i32 [ 0, %entry ], [ %outer.iv.next, %outer.latch ]
  %j.012 = phi i32 [ 0, %entry ], [ %inc5, %outer.latch ]
  %x.011 = phi i32 [ %init, %entry ], [ %x.1.lcssa, %outer.latch ]
  br label %inner

inner:
  %iv = phi i64 [ 0, %outer.header ], [ %iv.next, %inner ]
  %x.18 = phi i32 [ %x.011, %outer.header ], [ %add, %inner ]
  %arrayidx = getelementptr inbounds i32, ptr %A, i64 %iv
  store i32 %x.18, ptr %arrayidx, align 4
  %add = add nsw i32 %x.18, %j.012
  %iv.next = add nuw nsw i64 %iv, 1
  %iv.next.trunc = trunc i64 %iv.next to i32
  %inner.ec = icmp eq i32 %iv.next.trunc, %N
  br i1 %inner.ec, label %inner.exit, label %inner

inner.exit:
  %add.ivs  = add i32 %x.011, %outer.iv
  br label %outer.latch

outer.latch:
  %x.1.lcssa = phi i32 [ %add.ivs, %inner.exit ]
  %inc5 = add nuw nsw i32 %j.012, 1
  %outer.iv.next = add i32 %outer.iv, %N
  %outer.ec = icmp eq i32 %inc5, %M
  br i1 %outer.ec, label %exit, label %outer.header

exit:
  ret i32 %x.1.lcssa
}

define void @non_primary_iv_loop_inv_trunc(ptr %a, i64 %n, i64 %step) {
; CHECK-LABEL: define void @non_primary_iv_loop_inv_trunc(
; CHECK-SAME: ptr [[A:%.*]], i64 [[N:%.*]], i64 [[STEP:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[SMAX:%.*]] = call i64 @llvm.smax.i64(i64 [[N]], i64 1)
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[SMAX]], 8
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[SMAX]], 8
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 [[SMAX]], [[N_MOD_VF]]
; CHECK-NEXT:    [[TMP0:%.*]] = mul i64 [[N_VEC]], [[STEP]]
; CHECK-NEXT:    [[TMP3:%.*]] = trunc i64 [[STEP]] to i32
; CHECK-NEXT:    [[DOTSPLATINSERT5:%.*]] = insertelement <8 x i32> poison, i32 [[TMP3]], i64 0
; CHECK-NEXT:    [[DOTSPLAT6:%.*]] = shufflevector <8 x i32> [[DOTSPLATINSERT5]], <8 x i32> poison, <8 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP4:%.*]] = mul <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>, [[DOTSPLAT6]]
; CHECK-NEXT:    [[INDUCTION7:%.*]] = add <8 x i32> zeroinitializer, [[TMP4]]
; CHECK-NEXT:    [[TMP5:%.*]] = mul i32 [[TMP3]], 8
; CHECK-NEXT:    [[DOTSPLATINSERT8:%.*]] = insertelement <8 x i32> poison, i32 [[TMP5]], i64 0
; CHECK-NEXT:    [[DOTSPLAT9:%.*]] = shufflevector <8 x i32> [[DOTSPLATINSERT8]], <8 x i32> poison, <8 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_IND10:%.*]] = phi <8 x i32> [ [[INDUCTION7]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT11:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP6:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[TMP6]]
; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr inbounds i32, ptr [[TMP7]], i32 0
; CHECK-NEXT:    store <8 x i32> [[VEC_IND10]], ptr [[TMP8]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; CHECK-NEXT:    [[VEC_IND_NEXT11]] = add <8 x i32> [[VEC_IND10]], [[DOTSPLAT9]]
; CHECK-NEXT:    [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP9]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[SMAX]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], label %[[FOR_END:.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT:    [[BC_RESUME_VAL3:%.*]] = phi i64 [ [[TMP0]], %[[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:    [[J:%.*]] = phi i64 [ [[J_NEXT:%.*]], %[[FOR_BODY]] ], [ [[BC_RESUME_VAL3]], %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[I]]
; CHECK-NEXT:    [[TMP3:%.*]] = trunc i64 [[J]] to i32
; CHECK-NEXT:    store i32 [[TMP3]], ptr [[TMP0]], align 4
; CHECK-NEXT:    [[I_NEXT]] = add nuw nsw i64 [[I]], 1
; CHECK-NEXT:    [[J_NEXT]] = add nuw nsw i64 [[J]], [[STEP]]
; CHECK-NEXT:    [[COND:%.*]] = icmp slt i64 [[I_NEXT]], [[N]]
; CHECK-NEXT:    br i1 [[COND]], label %[[FOR_BODY]], label %[[FOR_END]], !llvm.loop [[LOOP7:![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 ]
  %j = phi i64 [ %j.next, %for.body ], [ 0, %entry ]
  %tmp0 = getelementptr inbounds i32, ptr %a, i64 %i
  %tmp1 = trunc i64 %j to i32
  store i32 %tmp1, ptr %tmp0, align 4
  %i.next = add nuw nsw i64 %i, 1
  %j.next = add nuw nsw i64 %j, %step
  %cond = icmp slt i64 %i.next, %n
  br i1 %cond, label %for.body, label %for.end

for.end:
  ret void
}


define void @iv_no_binary_op_in_descriptor(i1 %c, ptr %dst) {
; CHECK-LABEL: define void @iv_no_binary_op_in_descriptor(
; CHECK-SAME: i1 [[C:%.*]], ptr [[DST:%.*]]) {
; 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:%.*]] = getelementptr inbounds i64, ptr [[DST]], i64 [[TMP0]]
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds i64, ptr [[TMP1]], i32 0
; CHECK-NEXT:    store <8 x i64> [[VEC_IND]], ptr [[TMP2]], 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:    [[TMP3:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1000
; CHECK-NEXT:    br i1 [[TMP3]], 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_HEADER:.*]]
; CHECK:       [[LOOP_HEADER]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[IV_NEXT_P:%.*]], %[[LOOP_LATCH:.*]] ]
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr inbounds i64, ptr [[DST]], i64 [[IV]]
; CHECK-NEXT:    store i64 [[IV]], ptr [[GEP]], align 8
; CHECK-NEXT:    [[IV_NEXT:%.*]] = add i64 [[IV]], 1
; CHECK-NEXT:    br label %[[LOOP_LATCH]]
; CHECK:       [[LOOP_LATCH]]:
; CHECK-NEXT:    [[IV_NEXT_P]] = phi i64 [ [[IV_NEXT]], %[[LOOP_HEADER]] ]
; CHECK-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT_P]], 1000
; CHECK-NEXT:    br i1 [[EXITCOND_NOT]], label %[[EXIT]], label %[[LOOP_HEADER]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop.header

loop.header:
  %iv = phi i64 [ 0, %entry ], [ %iv.next.p, %loop.latch ]
  %gep = getelementptr inbounds i64, ptr %dst, i64 %iv
  store i64 %iv, ptr %gep, align 8
  %iv.next = add i64 %iv, 1
  br label %loop.latch

loop.latch:
  %iv.next.p = phi i64 [ %iv.next, %loop.header ]
  %exitcond.not = icmp eq i64 %iv.next.p, 1000
  br i1 %exitcond.not, label %exit, label %loop.header

exit:
  ret void
}

define void @wide_add_induction_step_live_in(ptr %dst, i64 %N, i16 %off) {
; CHECK-LABEL: define void @wide_add_induction_step_live_in(
; CHECK-SAME: ptr [[DST:%.*]], i64 [[N:%.*]], i16 [[OFF:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[O_1:%.*]] = add i16 [[OFF]], 2
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 8
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[N]], 8
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; CHECK-NEXT:    [[DOTCAST:%.*]] = trunc i64 [[N_VEC]] to i16
; CHECK-NEXT:    [[TMP0:%.*]] = mul i16 [[DOTCAST]], [[O_1]]
; CHECK-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <8 x i16> poison, i16 [[O_1]], i64 0
; CHECK-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <8 x i16> [[DOTSPLATINSERT]], <8 x i16> poison, <8 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP1:%.*]] = mul <8 x i16> <i16 0, i16 1, i16 2, i16 3, i16 4, i16 5, i16 6, i16 7>, [[DOTSPLAT]]
; CHECK-NEXT:    [[INDUCTION:%.*]] = add <8 x i16> zeroinitializer, [[TMP1]]
; CHECK-NEXT:    [[TMP2:%.*]] = mul i16 [[O_1]], 8
; CHECK-NEXT:    [[DOTSPLATINSERT1:%.*]] = insertelement <8 x i16> poison, i16 [[TMP2]], i64 0
; CHECK-NEXT:    [[DOTSPLAT2:%.*]] = shufflevector <8 x i16> [[DOTSPLATINSERT1]], <8 x i16> poison, <8 x i32> zeroinitializer
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <8 x i16> poison, i16 [[O_1]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <8 x i16> [[BROADCAST_SPLATINSERT]], <8 x i16> poison, <8 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 <8 x i16> [ [[INDUCTION]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP3:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT:    [[TMP4:%.*]] = add <8 x i16> [[VEC_IND]], [[BROADCAST_SPLAT]]
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i16, ptr [[DST]], i64 [[TMP3]]
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds i16, ptr [[TMP5]], i32 0
; CHECK-NEXT:    store <8 x i16> [[TMP4]], ptr [[TMP6]], align 2
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <8 x i16> [[VEC_IND]], [[DOTSPLAT2]]
; CHECK-NEXT:    [[TMP7:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP7]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT:    [[BC_RESUME_VAL3:%.*]] = phi i16 [ [[TMP0]], %[[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_2:%.*]] = phi i16 [ [[BC_RESUME_VAL3]], %[[SCALAR_PH]] ], [ [[ADD:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[ADD]] = add i16 [[IV_2]], [[O_1]]
; CHECK-NEXT:    [[GEP_DST:%.*]] = getelementptr inbounds i16, ptr [[DST]], i64 [[IV]]
; CHECK-NEXT:    store i16 [[ADD]], ptr [[GEP_DST]], align 2
; CHECK-NEXT:    [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV_NEXT]], [[N]]
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP11:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  %o.1 = add i16 %off, 2
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %iv.2 = phi i16 [ 0, %entry ], [ %add, %loop ]
  %add = add i16 %iv.2, %o.1
  %gep.dst = getelementptr inbounds i16, ptr %dst, i64 %iv
  store i16 %add, ptr %gep.dst, align 2
  %iv.next = add nuw nsw i64 %iv, 1
  %ec = icmp eq i64 %iv.next, %N
  br i1 %ec , label %exit, label %loop

exit:
  ret void
}

define void @wide_sub_induction_step_live_in(ptr %dst, i64 %N, i16 %off) {
; CHECK-LABEL: define void @wide_sub_induction_step_live_in(
; CHECK-SAME: ptr [[DST:%.*]], i64 [[N:%.*]], i16 [[OFF:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[O_1:%.*]] = add i16 [[OFF]], 2
; CHECK-NEXT:    [[TMP0:%.*]] = sub i16 -2, [[OFF]]
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 8
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[N]], 8
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; CHECK-NEXT:    [[DOTCAST:%.*]] = trunc i64 [[N_VEC]] to i16
; CHECK-NEXT:    [[TMP1:%.*]] = mul i16 [[DOTCAST]], [[TMP0]]
; CHECK-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <8 x i16> poison, i16 [[TMP0]], i64 0
; CHECK-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <8 x i16> [[DOTSPLATINSERT]], <8 x i16> poison, <8 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP2:%.*]] = mul <8 x i16> <i16 0, i16 1, i16 2, i16 3, i16 4, i16 5, i16 6, i16 7>, [[DOTSPLAT]]
; CHECK-NEXT:    [[INDUCTION:%.*]] = add <8 x i16> zeroinitializer, [[TMP2]]
; CHECK-NEXT:    [[TMP3:%.*]] = mul i16 [[TMP0]], 8
; CHECK-NEXT:    [[DOTSPLATINSERT1:%.*]] = insertelement <8 x i16> poison, i16 [[TMP3]], i64 0
; CHECK-NEXT:    [[DOTSPLAT2:%.*]] = shufflevector <8 x i16> [[DOTSPLATINSERT1]], <8 x i16> poison, <8 x i32> zeroinitializer
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <8 x i16> poison, i16 [[O_1]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <8 x i16> [[BROADCAST_SPLATINSERT]], <8 x i16> poison, <8 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 <8 x i16> [ [[INDUCTION]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[TMP4:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT:    [[TMP5:%.*]] = sub <8 x i16> [[VEC_IND]], [[BROADCAST_SPLAT]]
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds i16, ptr [[DST]], i64 [[TMP4]]
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i16, ptr [[TMP6]], i32 0
; CHECK-NEXT:    store <8 x i16> [[TMP5]], ptr [[TMP7]], align 2
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 8
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <8 x i16> [[VEC_IND]], [[DOTSPLAT2]]
; CHECK-NEXT:    [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP8]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP12:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT:    [[BC_RESUME_VAL3:%.*]] = phi i16 [ [[TMP1]], %[[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_2:%.*]] = phi i16 [ [[BC_RESUME_VAL3]], %[[SCALAR_PH]] ], [ [[SUB:%.*]], %[[LOOP]] ]
; CHECK-NEXT:    [[SUB]] = sub i16 [[IV_2]], [[O_1]]
; CHECK-NEXT:    [[GEP_DST:%.*]] = getelementptr inbounds i16, ptr [[DST]], i64 [[IV]]
; CHECK-NEXT:    store i16 [[SUB]], ptr [[GEP_DST]], align 2
; CHECK-NEXT:    [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV_NEXT]], [[N]]
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP13:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  %o.1 = add i16 %off, 2
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %iv.2 = phi i16 [ 0, %entry ], [ %sub, %loop ]
  %sub = sub i16 %iv.2, %o.1
  %gep.dst = getelementptr inbounds i16, ptr %dst, i64 %iv
  store i16 %sub, ptr %gep.dst, align 2
  %iv.next = add nuw nsw i64 %iv, 1
  %ec = icmp eq i64 %iv.next, %N
  br i1 %ec , label %exit, label %loop

exit:
  ret void
}
;.
; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}
; CHECK: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}
; CHECK: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}
; CHECK: [[LOOP3]] = distinct !{[[LOOP3]], [[META2]], [[META1]]}
; CHECK: [[LOOP4]] = distinct !{[[LOOP4]], [[META1]], [[META2]]}
; CHECK: [[LOOP5]] = distinct !{[[LOOP5]], [[META2]], [[META1]]}
; CHECK: [[LOOP6]] = distinct !{[[LOOP6]], [[META1]], [[META2]]}
; CHECK: [[LOOP7]] = distinct !{[[LOOP7]], [[META2]], [[META1]]}
; CHECK: [[LOOP8]] = distinct !{[[LOOP8]], [[META1]], [[META2]]}
; CHECK: [[LOOP9]] = distinct !{[[LOOP9]], [[META2]], [[META1]]}
; CHECK: [[LOOP10]] = distinct !{[[LOOP10]], [[META1]], [[META2]]}
; CHECK: [[LOOP11]] = distinct !{[[LOOP11]], [[META2]], [[META1]]}
; CHECK: [[LOOP12]] = distinct !{[[LOOP12]], [[META1]], [[META2]]}
; CHECK: [[LOOP13]] = distinct !{[[LOOP13]], [[META2]], [[META1]]}
;.