llvm/test/Transforms/LoopVectorize/pr58811-scev-expansion.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 6
; RUN: opt -passes=loop-vectorize -force-vector-width=2 -force-vector-interleave=1 -S %s | FileCheck --check-prefix=VF2 %s
; RUN: opt -passes=loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S %s | FileCheck %s

define void @test1_pr58811(ptr %dst) {
; VF2-LABEL: define void @test1_pr58811(
; VF2-SAME: ptr [[DST:%.*]]) {
; VF2-NEXT:  [[ENTRY:.*]]:
; VF2-NEXT:    br label %[[LOOP_1_PREHEADER:.*]]
; VF2:       [[LOOP_1_PREHEADER]]:
; VF2-NEXT:    [[IV_1_PH:%.*]] = phi i32 [ [[SUB93_2:%.*]], %[[UNREACHABLE_BB:.*]] ], [ 0, %[[ENTRY]] ]
; VF2-NEXT:    [[TMP0:%.*]] = sub i32 0, [[IV_1_PH]]
; VF2-NEXT:    br label %[[LOOP_1:.*]]
; VF2:       [[LOOP_1]]:
; VF2-NEXT:    [[INDUCTION_IV:%.*]] = phi i32 [ [[INDUCTION_IV_NEXT:%.*]], %[[LOOP_1]] ], [ [[TMP0]], %[[LOOP_1_PREHEADER]] ]
; VF2-NEXT:    [[IV_1:%.*]] = phi i32 [ [[IV_1_NEXT:%.*]], %[[LOOP_1]] ], [ [[IV_1_PH]], %[[LOOP_1_PREHEADER]] ]
; VF2-NEXT:    [[IV_2:%.*]] = phi i32 [ [[IV_2_NEXT:%.*]], %[[LOOP_1]] ], [ 0, %[[LOOP_1_PREHEADER]] ]
; VF2-NEXT:    [[TMP1:%.*]] = mul nuw nsw i32 [[IV_2]], -1
; VF2-NEXT:    [[IV_2_NEXT]] = add i32 [[IV_2]], 1
; VF2-NEXT:    [[IV_1_NEXT]] = add i32 [[IV_2]], [[IV_1]]
; VF2-NEXT:    [[INDUCTION_IV_NEXT]] = add i32 [[INDUCTION_IV]], [[TMP1]]
; VF2-NEXT:    br i1 false, label %[[LOOP_1]], label %[[LOOP_2_PREHEADER:.*]]
; VF2:       [[LOOP_2_PREHEADER]]:
; VF2-NEXT:    [[IV_1_LCSSA:%.*]] = phi i32 [ [[IV_1]], %[[LOOP_1]] ]
; VF2-NEXT:    br label %[[VECTOR_PH:.*]]
; VF2:       [[VECTOR_PH]]:
; VF2-NEXT:    [[TMP2:%.*]] = mul i32 198, [[INDUCTION_IV]]
; VF2-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i32> poison, i32 [[INDUCTION_IV]], i64 0
; VF2-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i32> [[BROADCAST_SPLATINSERT]], <2 x i32> poison, <2 x i32> zeroinitializer
; VF2-NEXT:    [[TMP3:%.*]] = mul <2 x i32> <i32 0, i32 1>, [[BROADCAST_SPLAT]]
; VF2-NEXT:    [[INDUCTION:%.*]] = add <2 x i32> zeroinitializer, [[TMP3]]
; VF2-NEXT:    [[TMP4:%.*]] = mul i32 [[INDUCTION_IV]], 2
; VF2-NEXT:    [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <2 x i32> poison, i32 [[TMP4]], i64 0
; VF2-NEXT:    [[BROADCAST_SPLAT2:%.*]] = shufflevector <2 x i32> [[BROADCAST_SPLATINSERT1]], <2 x i32> poison, <2 x i32> zeroinitializer
; VF2-NEXT:    br label %[[VECTOR_BODY:.*]]
; VF2:       [[VECTOR_BODY]]:
; VF2-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; VF2-NEXT:    [[VEC_IND:%.*]] = phi <2 x i32> [ [[INDUCTION]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; VF2-NEXT:    [[OFFSET_IDX:%.*]] = trunc i32 [[INDEX]] to i16
; VF2-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i32, ptr [[DST]], i16 [[OFFSET_IDX]]
; VF2-NEXT:    store <2 x i32> [[VEC_IND]], ptr [[TMP5]], align 4
; VF2-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2
; VF2-NEXT:    [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], [[BROADCAST_SPLAT2]]
; VF2-NEXT:    [[TMP6:%.*]] = icmp eq i32 [[INDEX_NEXT]], 198
; VF2-NEXT:    br i1 [[TMP6]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; VF2:       [[MIDDLE_BLOCK]]:
; VF2-NEXT:    br label %[[SCALAR_PH:.*]]
; VF2:       [[SCALAR_PH]]:
; VF2-NEXT:    br label %[[LOOP_2:.*]]
; VF2:       [[LOOP_2]]:
; VF2-NEXT:    [[IV_3:%.*]] = phi i16 [ [[IV_3_NEXT:%.*]], %[[LOOP_2]] ], [ 198, %[[SCALAR_PH]] ]
; VF2-NEXT:    [[IV_4:%.*]] = phi i32 [ [[IV_4_NEXT:%.*]], %[[LOOP_2]] ], [ [[TMP2]], %[[SCALAR_PH]] ]
; VF2-NEXT:    [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i16 [[IV_3]]
; VF2-NEXT:    store i32 [[IV_4]], ptr [[GEP_DST]], align 4
; VF2-NEXT:    [[IV_4_NEXT]] = sub i32 [[IV_4]], [[IV_1_LCSSA]]
; VF2-NEXT:    [[IV_3_NEXT]] = add i16 [[IV_3]], 1
; VF2-NEXT:    [[CMP88_1:%.*]] = icmp ult i16 [[IV_3]], 198
; VF2-NEXT:    br i1 [[CMP88_1]], label %[[LOOP_2]], label %[[LOOP_3_PREHEADER:.*]], !llvm.loop [[LOOP3:![0-9]+]]
; VF2:       [[LOOP_3_PREHEADER]]:
; VF2-NEXT:    [[IV_4_LCSSA:%.*]] = phi i32 [ [[IV_4]], %[[LOOP_2]] ]
; VF2-NEXT:    br label %[[LOOP_3:.*]]
; VF2:       [[LOOP_3]]:
; VF2-NEXT:    [[IV_5:%.*]] = phi i32 [ [[SUB93_2]], %[[LOOP_3]] ], [ 0, %[[LOOP_3_PREHEADER]] ]
; VF2-NEXT:    [[SUB93_2]] = sub i32 [[IV_5]], [[IV_4_LCSSA]]
; VF2-NEXT:    br label %[[LOOP_3]]
; VF2:       [[UNREACHABLE_BB]]:
; VF2-NEXT:    br label %[[LOOP_1_PREHEADER]]
;
; CHECK-LABEL: define void @test1_pr58811(
; CHECK-SAME: ptr [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP_1_PREHEADER:.*]]
; CHECK:       [[LOOP_1_PREHEADER]]:
; CHECK-NEXT:    [[IV_1_PH:%.*]] = phi i32 [ [[SUB93_2:%.*]], %[[UNREACHABLE_BB:.*]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = sub i32 0, [[IV_1_PH]]
; CHECK-NEXT:    br label %[[LOOP_1:.*]]
; CHECK:       [[LOOP_1]]:
; CHECK-NEXT:    [[INDUCTION_IV:%.*]] = phi i32 [ [[INDUCTION_IV_NEXT:%.*]], %[[LOOP_1]] ], [ [[TMP0]], %[[LOOP_1_PREHEADER]] ]
; CHECK-NEXT:    [[IV_1:%.*]] = phi i32 [ [[IV_1_NEXT:%.*]], %[[LOOP_1]] ], [ [[IV_1_PH]], %[[LOOP_1_PREHEADER]] ]
; CHECK-NEXT:    [[IV_2:%.*]] = phi i32 [ [[IV_2_NEXT:%.*]], %[[LOOP_1]] ], [ 0, %[[LOOP_1_PREHEADER]] ]
; CHECK-NEXT:    [[TMP1:%.*]] = mul nuw nsw i32 [[IV_2]], -1
; CHECK-NEXT:    [[IV_2_NEXT]] = add i32 [[IV_2]], 1
; CHECK-NEXT:    [[IV_1_NEXT]] = add i32 [[IV_2]], [[IV_1]]
; CHECK-NEXT:    [[INDUCTION_IV_NEXT]] = add i32 [[INDUCTION_IV]], [[TMP1]]
; CHECK-NEXT:    br i1 false, label %[[LOOP_1]], label %[[LOOP_2_PREHEADER:.*]]
; CHECK:       [[LOOP_2_PREHEADER]]:
; CHECK-NEXT:    [[IV_1_LCSSA:%.*]] = phi i32 [ [[IV_1]], %[[LOOP_1]] ]
; CHECK-NEXT:    br label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[IND_END:%.*]] = mul i32 196, [[INDUCTION_IV]]
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[INDUCTION_IV]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP3:%.*]] = mul <4 x i32> <i32 0, i32 1, i32 2, i32 3>, [[BROADCAST_SPLAT]]
; CHECK-NEXT:    [[INDUCTION:%.*]] = add <4 x i32> zeroinitializer, [[TMP3]]
; CHECK-NEXT:    [[TMP4:%.*]] = mul i32 [[INDUCTION_IV]], 4
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <4 x i32> poison, i32 [[TMP4]], 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 i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ [[INDUCTION]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = trunc i32 [[INDEX]] to i16
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i32, ptr [[DST]], i16 [[OFFSET_IDX]]
; CHECK-NEXT:    store <4 x i32> [[VEC_IND]], ptr [[TMP5]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], [[BROADCAST_SPLAT2]]
; CHECK-NEXT:    [[TMP2:%.*]] = icmp eq i32 [[INDEX_NEXT]], 196
; CHECK-NEXT:    br i1 [[TMP2]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[SCALAR_PH:.*]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP_2:.*]]
; CHECK:       [[LOOP_2]]:
; CHECK-NEXT:    [[IV_3:%.*]] = phi i16 [ [[IV_3_NEXT:%.*]], %[[LOOP_2]] ], [ 196, %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[IV_4:%.*]] = phi i32 [ [[IV_4_NEXT:%.*]], %[[LOOP_2]] ], [ [[IND_END]], %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i16 [[IV_3]]
; CHECK-NEXT:    store i32 [[IV_4]], ptr [[GEP_DST]], align 4
; CHECK-NEXT:    [[IV_4_NEXT]] = sub i32 [[IV_4]], [[IV_1_LCSSA]]
; CHECK-NEXT:    [[IV_3_NEXT]] = add i16 [[IV_3]], 1
; CHECK-NEXT:    [[CMP88_1:%.*]] = icmp ult i16 [[IV_3]], 198
; CHECK-NEXT:    br i1 [[CMP88_1]], label %[[LOOP_2]], label %[[LOOP_3_PREHEADER:.*]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK:       [[LOOP_3_PREHEADER]]:
; CHECK-NEXT:    [[IV_4_LCSSA:%.*]] = phi i32 [ [[IV_4]], %[[LOOP_2]] ]
; CHECK-NEXT:    br label %[[LOOP_3:.*]]
; CHECK:       [[LOOP_3]]:
; CHECK-NEXT:    [[IV_5:%.*]] = phi i32 [ [[SUB93_2]], %[[LOOP_3]] ], [ 0, %[[LOOP_3_PREHEADER]] ]
; CHECK-NEXT:    [[SUB93_2]] = sub i32 [[IV_5]], [[IV_4_LCSSA]]
; CHECK-NEXT:    br label %[[LOOP_3]]
; CHECK:       [[UNREACHABLE_BB]]:
; CHECK-NEXT:    br label %[[LOOP_1_PREHEADER]]
;
entry:
  br label %loop.1.preheader

loop.1.preheader:
  %iv.1.ph = phi i32 [ %sub93.2, %unreachable.bb ], [ 0, %entry ]
  br label %loop.1

loop.1:
  %iv.1 = phi i32 [ %iv.1.next, %loop.1 ], [ %iv.1.ph, %loop.1.preheader ]
  %iv.2 = phi i32 [ %iv.2.next, %loop.1 ], [ 0, %loop.1.preheader ]
  %iv.2.next = add i32 %iv.2, 1
  %iv.1.next = add i32 %iv.2, %iv.1
  br i1 false, label %loop.1, label %loop.2.preheader

loop.2.preheader:
  %iv.1.lcssa = phi i32 [ %iv.1, %loop.1 ]
  br label %loop.2

loop.2:
  %iv.3 = phi i16 [ %iv.3.next, %loop.2 ], [ 0, %loop.2.preheader ]
  %iv.4 = phi i32 [ %iv.4.next, %loop.2 ], [ 0, %loop.2.preheader ]
  %gep.dst = getelementptr inbounds i32, ptr %dst, i16 %iv.3
  store i32 %iv.4, ptr %gep.dst
  %iv.4.next = sub i32 %iv.4, %iv.1.lcssa
  %iv.3.next = add i16 %iv.3, 1
  %cmp88.1 = icmp ult i16 %iv.3, 198
  br i1 %cmp88.1, label %loop.2, label %loop.3.preheader

loop.3.preheader:
  %iv.4.lcssa = phi i32 [ %iv.4, %loop.2 ]
  br label %loop.3

loop.3:
  %iv.5 = phi i32 [ %sub93.2, %loop.3 ], [ 0, %loop.3.preheader ]
  %sub93.2 = sub i32 %iv.5, %iv.4.lcssa
  br label %loop.3

unreachable.bb:                                   ; No predecessors!
  br label %loop.1.preheader
}

define void @test2_pr58811(ptr %dst) {
; VF2-LABEL: define void @test2_pr58811(
; VF2-SAME: ptr [[DST:%.*]]) {
; VF2-NEXT:  [[ENTRY:.*]]:
; VF2-NEXT:    br label %[[LOOP_1_HEADER:.*]]
; VF2:       [[LOOP_1_HEADER_LOOPEXIT:.*]]:
; VF2-NEXT:    [[SUB93_2_LCSSA:%.*]] = phi i32 [ [[SUB93_2:%.*]], %[[LOOP_4:.*]] ]
; VF2-NEXT:    br label %[[LOOP_1_HEADER]]
; VF2:       [[LOOP_1_HEADER]]:
; VF2-NEXT:    [[P_1:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[SUB93_2_LCSSA]], %[[LOOP_1_HEADER_LOOPEXIT]] ]
; VF2-NEXT:    [[TMP0:%.*]] = mul i32 [[P_1]], -1
; VF2-NEXT:    br label %[[LOOP_2:.*]]
; VF2:       [[LOOP_2]]:
; VF2-NEXT:    [[INDUCTION_IV:%.*]] = phi i32 [ [[INDUCTION_IV_NEXT:%.*]], %[[LOOP_2]] ], [ [[TMP0]], %[[LOOP_1_HEADER]] ]
; VF2-NEXT:    [[IV_2:%.*]] = phi i32 [ [[P_1]], %[[LOOP_1_HEADER]] ], [ [[ADD101:%.*]], %[[LOOP_2]] ]
; VF2-NEXT:    [[IV_3:%.*]] = phi i32 [ 0, %[[LOOP_1_HEADER]] ], [ [[SUB93:%.*]], %[[LOOP_2]] ]
; VF2-NEXT:    [[TMP1:%.*]] = mul nuw nsw i32 [[IV_3]], -1
; VF2-NEXT:    [[SUB93]] = add i32 [[IV_3]], 1
; VF2-NEXT:    [[ADD101]] = add i32 [[IV_3]], [[IV_2]]
; VF2-NEXT:    [[INDUCTION_IV_NEXT]] = add i32 [[INDUCTION_IV]], [[TMP1]]
; VF2-NEXT:    br i1 false, label %[[LOOP_2]], label %[[LOOP_3_PREHEADER:.*]]
; VF2:       [[LOOP_3_PREHEADER]]:
; VF2-NEXT:    [[INDUCTION_IV_LCSSA:%.*]] = phi i32 [ [[INDUCTION_IV]], %[[LOOP_2]] ]
; VF2-NEXT:    [[IV_2_LCSSA:%.*]] = phi i32 [ [[IV_2]], %[[LOOP_2]] ]
; VF2-NEXT:    br label %[[VECTOR_PH:.*]]
; VF2:       [[VECTOR_PH]]:
; VF2-NEXT:    [[TMP2:%.*]] = mul i32 198, [[INDUCTION_IV_LCSSA]]
; VF2-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i32> poison, i32 [[INDUCTION_IV_LCSSA]], i64 0
; VF2-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i32> [[BROADCAST_SPLATINSERT]], <2 x i32> poison, <2 x i32> zeroinitializer
; VF2-NEXT:    [[TMP3:%.*]] = mul <2 x i32> <i32 0, i32 1>, [[BROADCAST_SPLAT]]
; VF2-NEXT:    [[INDUCTION:%.*]] = add <2 x i32> zeroinitializer, [[TMP3]]
; VF2-NEXT:    [[TMP4:%.*]] = mul i32 [[INDUCTION_IV_LCSSA]], 2
; VF2-NEXT:    [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <2 x i32> poison, i32 [[TMP4]], i64 0
; VF2-NEXT:    [[BROADCAST_SPLAT2:%.*]] = shufflevector <2 x i32> [[BROADCAST_SPLATINSERT1]], <2 x i32> poison, <2 x i32> zeroinitializer
; VF2-NEXT:    br label %[[VECTOR_BODY:.*]]
; VF2:       [[VECTOR_BODY]]:
; VF2-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; VF2-NEXT:    [[VEC_IND:%.*]] = phi <2 x i32> [ [[INDUCTION]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; VF2-NEXT:    [[OFFSET_IDX:%.*]] = trunc i32 [[INDEX]] to i16
; VF2-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i32, ptr [[DST]], i16 [[OFFSET_IDX]]
; VF2-NEXT:    store <2 x i32> [[VEC_IND]], ptr [[TMP5]], align 4
; VF2-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2
; VF2-NEXT:    [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], [[BROADCAST_SPLAT2]]
; VF2-NEXT:    [[TMP6:%.*]] = icmp eq i32 [[INDEX_NEXT]], 198
; VF2-NEXT:    br i1 [[TMP6]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; VF2:       [[MIDDLE_BLOCK]]:
; VF2-NEXT:    br label %[[SCALAR_PH:.*]]
; VF2:       [[SCALAR_PH]]:
; VF2-NEXT:    br label %[[LOOP_3:.*]]
; VF2:       [[LOOP_3]]:
; VF2-NEXT:    [[IV_4:%.*]] = phi i16 [ [[INC_1:%.*]], %[[LOOP_3]] ], [ 198, %[[SCALAR_PH]] ]
; VF2-NEXT:    [[IV_5:%.*]] = phi i32 [ [[SUB93_1:%.*]], %[[LOOP_3]] ], [ [[TMP2]], %[[SCALAR_PH]] ]
; VF2-NEXT:    [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i16 [[IV_4]]
; VF2-NEXT:    store i32 [[IV_5]], ptr [[GEP_DST]], align 4
; VF2-NEXT:    [[SUB93_1]] = sub i32 [[IV_5]], [[IV_2_LCSSA]]
; VF2-NEXT:    [[INC_1]] = add i16 [[IV_4]], 1
; VF2-NEXT:    [[CMP88_1:%.*]] = icmp ult i16 [[IV_4]], 198
; VF2-NEXT:    br i1 [[CMP88_1]], label %[[LOOP_3]], label %[[LOOP_4_PREHEADER:.*]], !llvm.loop [[LOOP5:![0-9]+]]
; VF2:       [[LOOP_4_PREHEADER]]:
; VF2-NEXT:    [[IV_5_LCSSA:%.*]] = phi i32 [ [[IV_5]], %[[LOOP_3]] ]
; VF2-NEXT:    br label %[[LOOP_4]]
; VF2:       [[LOOP_4]]:
; VF2-NEXT:    [[IV_6:%.*]] = phi i32 [ [[SUB93_2]], %[[LOOP_4]] ], [ 0, %[[LOOP_4_PREHEADER]] ]
; VF2-NEXT:    [[SUB93_2]] = sub i32 [[IV_6]], [[IV_5_LCSSA]]
; VF2-NEXT:    br i1 false, label %[[LOOP_4]], label %[[LOOP_1_HEADER_LOOPEXIT]]
;
; CHECK-LABEL: define void @test2_pr58811(
; CHECK-SAME: ptr [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP_1_HEADER:.*]]
; CHECK:       [[LOOP_1_HEADER_LOOPEXIT:.*]]:
; CHECK-NEXT:    [[SUB93_2_LCSSA:%.*]] = phi i32 [ [[SUB93_2:%.*]], %[[LOOP_4:.*]] ]
; CHECK-NEXT:    br label %[[LOOP_1_HEADER]]
; CHECK:       [[LOOP_1_HEADER]]:
; CHECK-NEXT:    [[P_1:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[SUB93_2_LCSSA]], %[[LOOP_1_HEADER_LOOPEXIT]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = mul i32 [[P_1]], -1
; CHECK-NEXT:    br label %[[LOOP_2:.*]]
; CHECK:       [[LOOP_2]]:
; CHECK-NEXT:    [[INDUCTION_IV:%.*]] = phi i32 [ [[INDUCTION_IV_NEXT:%.*]], %[[LOOP_2]] ], [ [[TMP0]], %[[LOOP_1_HEADER]] ]
; CHECK-NEXT:    [[IV_2:%.*]] = phi i32 [ [[P_1]], %[[LOOP_1_HEADER]] ], [ [[ADD101:%.*]], %[[LOOP_2]] ]
; CHECK-NEXT:    [[IV_3:%.*]] = phi i32 [ 0, %[[LOOP_1_HEADER]] ], [ [[SUB93:%.*]], %[[LOOP_2]] ]
; CHECK-NEXT:    [[TMP1:%.*]] = mul nuw nsw i32 [[IV_3]], -1
; CHECK-NEXT:    [[SUB93]] = add i32 [[IV_3]], 1
; CHECK-NEXT:    [[ADD101]] = add i32 [[IV_3]], [[IV_2]]
; CHECK-NEXT:    [[INDUCTION_IV_NEXT]] = add i32 [[INDUCTION_IV]], [[TMP1]]
; CHECK-NEXT:    br i1 false, label %[[LOOP_2]], label %[[LOOP_3_PREHEADER:.*]]
; CHECK:       [[LOOP_3_PREHEADER]]:
; CHECK-NEXT:    [[INDUCTION_IV_LCSSA:%.*]] = phi i32 [ [[INDUCTION_IV]], %[[LOOP_2]] ]
; CHECK-NEXT:    [[IV_2_LCSSA:%.*]] = phi i32 [ [[IV_2]], %[[LOOP_2]] ]
; CHECK-NEXT:    br label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[IND_END:%.*]] = mul i32 196, [[INDUCTION_IV_LCSSA]]
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[INDUCTION_IV_LCSSA]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP3:%.*]] = mul <4 x i32> <i32 0, i32 1, i32 2, i32 3>, [[BROADCAST_SPLAT]]
; CHECK-NEXT:    [[INDUCTION:%.*]] = add <4 x i32> zeroinitializer, [[TMP3]]
; CHECK-NEXT:    [[TMP4:%.*]] = mul i32 [[INDUCTION_IV_LCSSA]], 4
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <4 x i32> poison, i32 [[TMP4]], 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 i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ [[INDUCTION]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = trunc i32 [[INDEX]] to i16
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i32, ptr [[DST]], i16 [[OFFSET_IDX]]
; CHECK-NEXT:    store <4 x i32> [[VEC_IND]], ptr [[TMP5]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], [[BROADCAST_SPLAT2]]
; CHECK-NEXT:    [[TMP2:%.*]] = icmp eq i32 [[INDEX_NEXT]], 196
; CHECK-NEXT:    br i1 [[TMP2]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[SCALAR_PH:.*]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP_3:.*]]
; CHECK:       [[LOOP_3]]:
; CHECK-NEXT:    [[IV_4:%.*]] = phi i16 [ [[INC_1:%.*]], %[[LOOP_3]] ], [ 196, %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[IV_5:%.*]] = phi i32 [ [[SUB93_1:%.*]], %[[LOOP_3]] ], [ [[IND_END]], %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i16 [[IV_4]]
; CHECK-NEXT:    store i32 [[IV_5]], ptr [[GEP_DST]], align 4
; CHECK-NEXT:    [[SUB93_1]] = sub i32 [[IV_5]], [[IV_2_LCSSA]]
; CHECK-NEXT:    [[INC_1]] = add i16 [[IV_4]], 1
; CHECK-NEXT:    [[CMP88_1:%.*]] = icmp ult i16 [[IV_4]], 198
; CHECK-NEXT:    br i1 [[CMP88_1]], label %[[LOOP_3]], label %[[LOOP_4_PREHEADER:.*]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK:       [[LOOP_4_PREHEADER]]:
; CHECK-NEXT:    [[IV_5_LCSSA:%.*]] = phi i32 [ [[IV_5]], %[[LOOP_3]] ]
; CHECK-NEXT:    br label %[[LOOP_4]]
; CHECK:       [[LOOP_4]]:
; CHECK-NEXT:    [[IV_6:%.*]] = phi i32 [ [[SUB93_2]], %[[LOOP_4]] ], [ 0, %[[LOOP_4_PREHEADER]] ]
; CHECK-NEXT:    [[SUB93_2]] = sub i32 [[IV_6]], [[IV_5_LCSSA]]
; CHECK-NEXT:    br i1 false, label %[[LOOP_4]], label %[[LOOP_1_HEADER_LOOPEXIT]]
;
entry:
  br label %loop.1.header

loop.1.header:
  %p.1 = phi i32 [ 0, %entry ], [ %sub93.2, %loop.4 ]
  br label %loop.2

loop.2:
  %iv.2 = phi i32 [ %p.1, %loop.1.header ], [ %add101, %loop.2 ]
  %iv.3 = phi i32 [ 0, %loop.1.header ], [ %sub93, %loop.2 ]
  %sub93 = add i32 %iv.3, 1
  %add101 = add i32 %iv.3, %iv.2
  br i1 false, label %loop.2, label %loop.3

loop.3:
  %iv.4 = phi i16 [ 0, %loop.2 ], [ %inc.1, %loop.3 ]
  %iv.5 = phi i32 [ 0, %loop.2 ], [ %sub93.1, %loop.3 ]
  %gep.dst = getelementptr inbounds i32, ptr %dst, i16 %iv.4
  store i32 %iv.5, ptr %gep.dst
  %sub93.1 = sub i32 %iv.5, %iv.2
  %inc.1 = add i16 %iv.4, 1
  %cmp88.1 = icmp ult i16 %iv.4, 198
  br i1 %cmp88.1, label %loop.3, label %loop.4

loop.4:
  %iv.6 = phi i32 [ 0, %loop.3 ], [ %sub93.2, %loop.4 ]
  %sub93.2 = sub i32 %iv.6, %iv.5
  br i1 false, label %loop.4, label %loop.1.header
}

define void @test3_pr58811(ptr %dst) {
; VF2-LABEL: define void @test3_pr58811(
; VF2-SAME: ptr [[DST:%.*]]) {
; VF2-NEXT:  [[ENTRY:.*]]:
; VF2-NEXT:    br label %[[LOOP_1_HEADER:.*]]
; VF2:       [[LOOP_1_HEADER]]:
; VF2-NEXT:    [[P_1:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[SUB93_2:%.*]], %[[LOOP_1_LATCH:.*]] ]
; VF2-NEXT:    [[REM85:%.*]] = urem i32 1, [[P_1]]
; VF2-NEXT:    br label %[[LOOP_2:.*]]
; VF2:       [[LOOP_2]]:
; VF2-NEXT:    [[P_2:%.*]] = phi i32 [ 1, %[[LOOP_1_HEADER]] ], [ 0, %[[LOOP_2]] ]
; VF2-NEXT:    [[ADD101:%.*]] = add i32 [[REM85]], [[P_2]]
; VF2-NEXT:    br i1 false, label %[[LOOP_2]], label %[[LOOP_3_PREHEADER:.*]]
; VF2:       [[LOOP_3_PREHEADER]]:
; VF2-NEXT:    [[ADD101_LCSSA:%.*]] = phi i32 [ [[ADD101]], %[[LOOP_2]] ]
; VF2-NEXT:    [[TMP0:%.*]] = udiv i32 1, [[P_1]]
; VF2-NEXT:    [[TMP1:%.*]] = mul nuw i32 [[P_1]], [[TMP0]]
; VF2-NEXT:    [[TMP2:%.*]] = add i32 [[TMP1]], -1
; VF2-NEXT:    [[TMP3:%.*]] = sub i32 [[TMP2]], [[P_2]]
; VF2-NEXT:    br label %[[VECTOR_PH:.*]]
; VF2:       [[VECTOR_PH]]:
; VF2-NEXT:    [[TMP15:%.*]] = mul i32 198, [[TMP3]]
; VF2-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i32> poison, i32 [[TMP3]], i64 0
; VF2-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i32> [[BROADCAST_SPLATINSERT]], <2 x i32> poison, <2 x i32> zeroinitializer
; VF2-NEXT:    [[TMP5:%.*]] = mul <2 x i32> <i32 0, i32 1>, [[BROADCAST_SPLAT]]
; VF2-NEXT:    [[INDUCTION:%.*]] = add <2 x i32> zeroinitializer, [[TMP5]]
; VF2-NEXT:    [[TMP6:%.*]] = mul i32 [[TMP3]], 2
; VF2-NEXT:    [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <2 x i32> poison, i32 [[TMP6]], i64 0
; VF2-NEXT:    [[BROADCAST_SPLAT2:%.*]] = shufflevector <2 x i32> [[BROADCAST_SPLATINSERT1]], <2 x i32> poison, <2 x i32> zeroinitializer
; VF2-NEXT:    br label %[[VECTOR_BODY:.*]]
; VF2:       [[VECTOR_BODY]]:
; VF2-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; VF2-NEXT:    [[VEC_IND:%.*]] = phi <2 x i32> [ [[INDUCTION]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; VF2-NEXT:    [[OFFSET_IDX:%.*]] = trunc i32 [[INDEX]] to i16
; VF2-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i32, ptr [[DST]], i16 [[OFFSET_IDX]]
; VF2-NEXT:    store <2 x i32> [[VEC_IND]], ptr [[TMP7]], align 4
; VF2-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2
; VF2-NEXT:    [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], [[BROADCAST_SPLAT2]]
; VF2-NEXT:    [[TMP22:%.*]] = icmp eq i32 [[INDEX_NEXT]], 198
; VF2-NEXT:    br i1 [[TMP22]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; VF2:       [[MIDDLE_BLOCK]]:
; VF2-NEXT:    br label %[[SCALAR_PH:.*]]
; VF2:       [[SCALAR_PH]]:
; VF2-NEXT:    br label %[[LOOP_3:.*]]
; VF2:       [[LOOP_3]]:
; VF2-NEXT:    [[IV_3:%.*]] = phi i16 [ [[INC_1:%.*]], %[[LOOP_3]] ], [ 198, %[[SCALAR_PH]] ]
; VF2-NEXT:    [[IV_4:%.*]] = phi i32 [ [[SUB93_1:%.*]], %[[LOOP_3]] ], [ [[TMP15]], %[[SCALAR_PH]] ]
; VF2-NEXT:    [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i16 [[IV_3]]
; VF2-NEXT:    store i32 [[IV_4]], ptr [[GEP_DST]], align 4
; VF2-NEXT:    [[SUB93_1]] = sub i32 [[IV_4]], [[ADD101_LCSSA]]
; VF2-NEXT:    [[INC_1]] = add i16 [[IV_3]], 1
; VF2-NEXT:    [[CMP88_1:%.*]] = icmp ult i16 [[IV_3]], 198
; VF2-NEXT:    br i1 [[CMP88_1]], label %[[LOOP_3]], label %[[LOOP_4_PREHEADER:.*]], !llvm.loop [[LOOP7:![0-9]+]]
; VF2:       [[LOOP_4_PREHEADER]]:
; VF2-NEXT:    [[IV_4_LCSSA:%.*]] = phi i32 [ [[IV_4]], %[[LOOP_3]] ]
; VF2-NEXT:    br label %[[LOOP_4:.*]]
; VF2:       [[LOOP_4]]:
; VF2-NEXT:    [[IV_5:%.*]] = phi i32 [ [[SUB93_2]], %[[LOOP_4]] ], [ 0, %[[LOOP_4_PREHEADER]] ]
; VF2-NEXT:    [[SUB93_2]] = sub i32 [[IV_5]], [[IV_4_LCSSA]]
; VF2-NEXT:    br label %[[LOOP_4]]
; VF2:       [[LOOP_1_LATCH]]:
; VF2-NEXT:    br label %[[LOOP_1_HEADER]]
;
; CHECK-LABEL: define void @test3_pr58811(
; CHECK-SAME: ptr [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP_1_HEADER:.*]]
; CHECK:       [[LOOP_1_HEADER]]:
; CHECK-NEXT:    [[P_1:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[SUB93_2:%.*]], %[[LOOP_1_LATCH:.*]] ]
; CHECK-NEXT:    [[REM85:%.*]] = urem i32 1, [[P_1]]
; CHECK-NEXT:    br label %[[LOOP_2:.*]]
; CHECK:       [[LOOP_2]]:
; CHECK-NEXT:    [[P_2:%.*]] = phi i32 [ 1, %[[LOOP_1_HEADER]] ], [ 0, %[[LOOP_2]] ]
; CHECK-NEXT:    [[ADD101:%.*]] = add i32 [[REM85]], [[P_2]]
; CHECK-NEXT:    br i1 false, label %[[LOOP_2]], label %[[LOOP_3_PREHEADER:.*]]
; CHECK:       [[LOOP_3_PREHEADER]]:
; CHECK-NEXT:    [[ADD101_LCSSA:%.*]] = phi i32 [ [[ADD101]], %[[LOOP_2]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = udiv i32 1, [[P_1]]
; CHECK-NEXT:    [[TMP1:%.*]] = mul nuw i32 [[P_1]], [[TMP0]]
; CHECK-NEXT:    [[TMP2:%.*]] = add i32 [[TMP1]], -1
; CHECK-NEXT:    [[TMP3:%.*]] = sub i32 [[TMP2]], [[P_2]]
; CHECK-NEXT:    br label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[IND_END:%.*]] = mul i32 196, [[TMP3]]
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[TMP3]], i64 0
; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP5:%.*]] = mul <4 x i32> <i32 0, i32 1, i32 2, i32 3>, [[BROADCAST_SPLAT]]
; CHECK-NEXT:    [[INDUCTION:%.*]] = add <4 x i32> zeroinitializer, [[TMP5]]
; CHECK-NEXT:    [[TMP6:%.*]] = mul i32 [[TMP3]], 4
; CHECK-NEXT:    [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <4 x i32> poison, i32 [[TMP6]], 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 i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <4 x i32> [ [[INDUCTION]], %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = trunc i32 [[INDEX]] to i16
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i32, ptr [[DST]], i16 [[OFFSET_IDX]]
; CHECK-NEXT:    store <4 x i32> [[VEC_IND]], ptr [[TMP7]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4
; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], [[BROADCAST_SPLAT2]]
; CHECK-NEXT:    [[TMP4:%.*]] = icmp eq i32 [[INDEX_NEXT]], 196
; CHECK-NEXT:    br i1 [[TMP4]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[SCALAR_PH:.*]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP_3:.*]]
; CHECK:       [[LOOP_3]]:
; CHECK-NEXT:    [[IV_3:%.*]] = phi i16 [ [[INC_1:%.*]], %[[LOOP_3]] ], [ 196, %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[IV_4:%.*]] = phi i32 [ [[SUB93_1:%.*]], %[[LOOP_3]] ], [ [[IND_END]], %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i16 [[IV_3]]
; CHECK-NEXT:    store i32 [[IV_4]], ptr [[GEP_DST]], align 4
; CHECK-NEXT:    [[SUB93_1]] = sub i32 [[IV_4]], [[ADD101_LCSSA]]
; CHECK-NEXT:    [[INC_1]] = add i16 [[IV_3]], 1
; CHECK-NEXT:    [[CMP88_1:%.*]] = icmp ult i16 [[IV_3]], 198
; CHECK-NEXT:    br i1 [[CMP88_1]], label %[[LOOP_3]], label %[[LOOP_4_PREHEADER:.*]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK:       [[LOOP_4_PREHEADER]]:
; CHECK-NEXT:    [[IV_4_LCSSA:%.*]] = phi i32 [ [[IV_4]], %[[LOOP_3]] ]
; CHECK-NEXT:    br label %[[LOOP_4:.*]]
; CHECK:       [[LOOP_4]]:
; CHECK-NEXT:    [[IV_5:%.*]] = phi i32 [ [[SUB93_2]], %[[LOOP_4]] ], [ 0, %[[LOOP_4_PREHEADER]] ]
; CHECK-NEXT:    [[SUB93_2]] = sub i32 [[IV_5]], [[IV_4_LCSSA]]
; CHECK-NEXT:    br label %[[LOOP_4]]
; CHECK:       [[LOOP_1_LATCH]]:
; CHECK-NEXT:    br label %[[LOOP_1_HEADER]]
;
entry:
  br label %loop.1.header

loop.1.header:
  %p.1 = phi i32 [ 0, %entry ], [ %sub93.2, %loop.1.latch ]
  %rem85 = urem i32 1, %p.1
  br label %loop.2

loop.2:
  %p.2 = phi i32 [ 1, %loop.1.header ], [ 0, %loop.2 ]
  %add101 = add i32 %rem85, %p.2
  br i1 false, label %loop.2, label %loop.3

loop.3:
  %iv.3 = phi i16 [ 0, %loop.2 ], [ %inc.1, %loop.3 ]
  %iv.4 = phi i32 [ 0, %loop.2 ], [ %sub93.1, %loop.3 ]
  %gep.dst = getelementptr inbounds i32, ptr %dst, i16 %iv.3
  store i32 %iv.4, ptr %gep.dst
  %sub93.1 = sub i32 %iv.4, %add101
  %inc.1 = add i16 %iv.3, 1
  %cmp88.1 = icmp ult i16 %iv.3, 198
  br i1 %cmp88.1, label %loop.3, label %loop.4

loop.4:
  %iv.5 = phi i32 [ 0, %loop.3 ], [ %sub93.2, %loop.4 ]
  %sub93.2 = sub i32 %iv.5, %iv.4
  br label %loop.4

loop.1.latch:                                 ; No predecessors!
  br label %loop.1.header
}

define void @iv_start_from_shl_of_previous_iv(ptr %dst) {
; VF2-LABEL: define void @iv_start_from_shl_of_previous_iv(
; VF2-SAME: ptr [[DST:%.*]]) {
; VF2-NEXT:  [[ENTRY:.*:]]
; VF2-NEXT:    br label %[[VECTOR_PH:.*]]
; VF2:       [[VECTOR_PH]]:
; VF2-NEXT:    br label %[[VECTOR_BODY:.*]]
; VF2:       [[VECTOR_BODY]]:
; VF2-NEXT:    store <2 x i8> zeroinitializer, ptr [[DST]], align 1
; VF2-NEXT:    br label %[[MIDDLE_BLOCK:.*]]
; VF2:       [[MIDDLE_BLOCK]]:
; VF2-NEXT:    br label %[[LOOP_1_EXIT:.*]]
; VF2:       [[LOOP_1_EXIT]]:
; VF2-NEXT:    [[IV_1_SHL:%.*]] = shl i64 1, 1
; VF2-NEXT:    br label %[[VECTOR_PH1:.*]]
; VF2:       [[VECTOR_PH1]]:
; VF2-NEXT:    br label %[[VECTOR_BODY2:.*]]
; VF2:       [[VECTOR_BODY2]]:
; VF2-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH1]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY2]] ]
; VF2-NEXT:    [[OFFSET_IDX:%.*]] = add i64 2, [[INDEX]]
; VF2-NEXT:    [[TMP1:%.*]] = getelementptr i8, ptr [[DST]], i64 [[OFFSET_IDX]]
; VF2-NEXT:    store <2 x i8> splat (i8 1), ptr [[TMP1]], align 1
; VF2-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; VF2-NEXT:    [[TMP2:%.*]] = icmp eq i64 [[INDEX_NEXT]], 98
; VF2-NEXT:    br i1 [[TMP2]], label %[[MIDDLE_BLOCK3:.*]], label %[[VECTOR_BODY2]], !llvm.loop [[LOOP8:![0-9]+]]
; VF2:       [[MIDDLE_BLOCK3]]:
; VF2-NEXT:    br label %[[SCALAR_PH:.*]]
; VF2:       [[SCALAR_PH]]:
; VF2-NEXT:    br label %[[LOOP_2:.*]]
; VF2:       [[LOOP_2]]:
; VF2-NEXT:    [[IV_2:%.*]] = phi i64 [ 100, %[[SCALAR_PH]] ], [ [[IV_2_NEXT:%.*]], %[[LOOP_2]] ]
; VF2-NEXT:    [[GEP_2:%.*]] = getelementptr i8, ptr [[DST]], i64 [[IV_2]]
; VF2-NEXT:    store i8 1, ptr [[GEP_2]], align 1
; VF2-NEXT:    [[IV_2_NEXT]] = add i64 [[IV_2]], 1
; VF2-NEXT:    [[CMP_2:%.*]] = icmp eq i64 [[IV_2]], 100
; VF2-NEXT:    br i1 [[CMP_2]], label %[[EXIT:.*]], label %[[LOOP_2]], !llvm.loop [[LOOP9:![0-9]+]]
; VF2:       [[EXIT]]:
; VF2-NEXT:    ret void
;
; CHECK-LABEL: define void @iv_start_from_shl_of_previous_iv(
; CHECK-SAME: ptr [[DST:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP_1:.*]]
; CHECK:       [[LOOP_1]]:
; CHECK-NEXT:    [[IV_1:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[IV_1_NEXT:%.*]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[GEP_1:%.*]] = getelementptr i8, ptr [[DST]], i64 [[IV_1]]
; CHECK-NEXT:    store i8 0, ptr [[GEP_1]], align 1
; CHECK-NEXT:    [[IV_1_NEXT]] = add i64 [[IV_1]], 1
; CHECK-NEXT:    [[CMP_1:%.*]] = icmp eq i64 [[IV_1]], 0
; CHECK-NEXT:    br i1 [[CMP_1]], label %[[LOOP_1]], label %[[LOOP_1_EXIT:.*]]
; CHECK:       [[LOOP_1_EXIT]]:
; CHECK-NEXT:    [[IV_1_LCSSA:%.*]] = phi i64 [ [[IV_1]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[IV_1_SHL:%.*]] = shl i64 [[IV_1_LCSSA]], 1
; CHECK-NEXT:    br label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[TMP2:%.*]] = add i64 [[IV_1_SHL]], 96
; 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:%.*]] = add i64 [[IV_1_SHL]], [[INDEX]]
; CHECK-NEXT:    [[TMP0:%.*]] = getelementptr i8, ptr [[DST]], i64 [[OFFSET_IDX]]
; CHECK-NEXT:    store <4 x i8> splat (i8 1), ptr [[TMP0]], align 1
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i64 [[INDEX_NEXT]], 96
; CHECK-NEXT:    br i1 [[TMP1]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[SCALAR_PH:.*]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    br label %[[LOOP_2:.*]]
; CHECK:       [[LOOP_2]]:
; CHECK-NEXT:    [[IV_2:%.*]] = phi i64 [ [[TMP2]], %[[SCALAR_PH]] ], [ [[IV_2_NEXT:%.*]], %[[LOOP_2]] ]
; CHECK-NEXT:    [[GEP_2:%.*]] = getelementptr i8, ptr [[DST]], i64 [[IV_2]]
; CHECK-NEXT:    store i8 1, ptr [[GEP_2]], align 1
; CHECK-NEXT:    [[IV_2_NEXT]] = add i64 [[IV_2]], 1
; CHECK-NEXT:    [[CMP_2:%.*]] = icmp eq i64 [[IV_2]], 100
; CHECK-NEXT:    br i1 [[CMP_2]], label %[[EXIT:.*]], label %[[LOOP_2]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop.1

loop.1:
  %iv.1 = phi i64 [ 0, %entry ], [ %iv.1.next, %loop.1 ]
  %gep.1 = getelementptr i8, ptr %dst, i64 %iv.1
  store i8 0, ptr %gep.1, align 1
  %iv.1.next = add i64 %iv.1, 1
  %cmp.1 = icmp eq i64 %iv.1, 0
  br i1 %cmp.1, label %loop.1, label %loop.1.exit

loop.1.exit:
  %iv.1.shl = shl i64 %iv.1, 1
  br label %loop.2

loop.2:
  %iv.2 = phi i64 [ %iv.1.shl, %loop.1.exit ], [ %iv.2.next, %loop.2 ]
  %gep.2 = getelementptr i8, ptr %dst, i64 %iv.2
  store i8 1, ptr %gep.2, align 1
  %iv.2.next = add i64 %iv.2, 1
  %cmp.2 = icmp eq i64 %iv.2, 100
  br i1 %cmp.2, label %exit, label %loop.2

exit:
  ret void
}