; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 5
; RUN: opt -p loop-vectorize -force-vector-width=2 -S %s | FileCheck %s

declare noalias noundef ptr @calloc(i64 noundef, i64 noundef)

define void @reuse_lcssa_phi_for_add_rec1(ptr %head) {
; CHECK-LABEL: define void @reuse_lcssa_phi_for_add_rec1(
; CHECK-SAME: ptr [[HEAD:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP_1:.*]]
; CHECK:       [[LOOP_1]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ 1, %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[IV_2:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[IV_2_NEXT:%.*]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[FOR:%.*]] = phi ptr [ [[HEAD]], %[[ENTRY]] ], [ [[L_1:%.*]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[L_1]] = load ptr, ptr [[FOR]], align 8
; CHECK-NEXT:    [[IV_2_NEXT]] = add nuw nsw i32 [[IV_2]], 1
; CHECK-NEXT:    [[EC_1:%.*]] = icmp eq ptr [[L_1]], null
; CHECK-NEXT:    [[IV_NEXT]] = add nuw i64 [[IV]], 1
; CHECK-NEXT:    br i1 [[EC_1]], label %[[PH:.*]], label %[[LOOP_1]]
; CHECK:       [[PH]]:
; CHECK-NEXT:    [[IV_LCSSA:%.*]] = phi i64 [ [[IV]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = phi i32 [ [[IV_2_NEXT]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[SRC_2:%.*]] = tail call noalias noundef dereferenceable_or_null(8) ptr @calloc(i64 1, i64 8)
; CHECK-NEXT:    [[SMIN:%.*]] = call i32 @llvm.smin.i32(i32 [[TMP0]], i32 1)
; CHECK-NEXT:    [[TMP1:%.*]] = sub i32 [[TMP0]], [[SMIN]]
; CHECK-NEXT:    [[TMP2:%.*]] = zext i32 [[TMP1]] to i64
; CHECK-NEXT:    [[TMP3:%.*]] = add nuw nsw i64 [[TMP2]], 1
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP3]], 2
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[TMP3]], 2
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 [[TMP3]], [[N_MOD_VF]]
; CHECK-NEXT:    [[TMP4:%.*]] = sub i64 [[IV_LCSSA]], [[N_VEC]]
; 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:%.*]] = sub i64 [[IV_LCSSA]], [[INDEX]]
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr ptr, ptr [[SRC_2]], i64 [[OFFSET_IDX]]
; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr ptr, ptr [[TMP5]], i32 0
; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr ptr, ptr [[TMP6]], i32 -1
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <2 x ptr>, ptr [[TMP7]], align 8
; CHECK-NEXT:    [[REVERSE:%.*]] = shufflevector <2 x ptr> [[WIDE_LOAD]], <2 x ptr> poison, <2 x i32> <i32 1, i32 0>
; CHECK-NEXT:    [[TMP8:%.*]] = extractelement <2 x ptr> [[REVERSE]], i32 0
; CHECK-NEXT:    store ptr null, ptr [[TMP8]], align 8
; CHECK-NEXT:    [[TMP9:%.*]] = extractelement <2 x ptr> [[REVERSE]], i32 1
; CHECK-NEXT:    store ptr null, ptr [[TMP9]], align 8
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT:    [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP10]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[TMP3]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], label %[[FOR_END:.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[TMP4]], %[[MIDDLE_BLOCK]] ], [ [[IV_LCSSA]], %[[PH]] ]
; CHECK-NEXT:    br label %[[LOOP_2:.*]]
; CHECK:       [[LOOP_2]]:
; CHECK-NEXT:    [[IV_3:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[IV_NEXT_3:%.*]], %[[LOOP_2]] ]
; CHECK-NEXT:    [[IV_NEXT_3]] = add nsw i64 [[IV_3]], -1
; CHECK-NEXT:    [[GEP_SRC_2:%.*]] = getelementptr ptr, ptr [[SRC_2]], i64 [[IV_3]]
; CHECK-NEXT:    [[L:%.*]] = load ptr, ptr [[GEP_SRC_2]], align 8
; CHECK-NEXT:    store ptr null, ptr [[L]], align 8
; CHECK-NEXT:    [[T:%.*]] = trunc nuw i64 [[IV_3]] to i32
; CHECK-NEXT:    [[EC_2:%.*]] = icmp sgt i32 [[T]], 1
; CHECK-NEXT:    br i1 [[EC_2]], label %[[LOOP_2]], label %[[FOR_END]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK:       [[FOR_END]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop.1

loop.1:
  %iv = phi i64 [ 1, %entry ], [ %iv.next, %loop.1 ]
  %iv.2 = phi i32 [ 0, %entry ], [ %iv.2.next, %loop.1 ]
  %for = phi ptr [ %head, %entry ], [ %l.1, %loop.1 ]
  %l.1 = load ptr, ptr %for, align 8
  %iv.2.next = add nuw nsw i32 %iv.2, 1
  %ec.1 = icmp eq ptr %l.1, null
  %iv.next = add nuw i64 %iv, 1
  br i1 %ec.1, label %ph, label %loop.1

ph:
  %iv.lcssa = phi i64 [ %iv, %loop.1 ]
  %iv.2.next.lcssa = phi i32 [ %iv.2.next, %loop.1 ]
  %src.2 = tail call noalias noundef dereferenceable_or_null(8) ptr @calloc(i64 1, i64 8)
  br label %loop.2

loop.2:
  %iv.3 = phi i64 [ %iv.lcssa, %ph ], [ %iv.next.3, %loop.2 ]
  %iv.next.3 = add nsw i64 %iv.3, -1
  %gep.src.2 = getelementptr ptr, ptr %src.2, i64 %iv.3
  %l = load ptr, ptr %gep.src.2, align 8
  store ptr null, ptr %l, align 8
  %t = trunc nuw i64 %iv.3 to i32
  %ec.2 = icmp sgt i32 %t, 1
  br i1 %ec.2, label %loop.2, label %for.end

for.end:
  ret void
}

declare i32 @val()

define void @runtime_checks_ptr_inductions(ptr %dst.1, ptr %dst.2, i1 %c) {
; CHECK-LABEL: define void @runtime_checks_ptr_inductions(
; CHECK-SAME: ptr [[DST_1:%.*]], ptr [[DST_2:%.*]], i1 [[C:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP_1:.*]]
; CHECK:       [[LOOP_1]]:
; CHECK-NEXT:    [[PTR_IV_1:%.*]] = phi ptr [ [[DST_1]], %[[ENTRY]] ], [ [[PTR_IV_1_NEXT:%.*]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[CALL:%.*]] = call i32 @val()
; CHECK-NEXT:    [[SEL_DST:%.*]] = select i1 [[C]], ptr [[DST_1]], ptr [[DST_2]]
; CHECK-NEXT:    [[PTR_IV_1_NEXT]] = getelementptr i8, ptr [[PTR_IV_1]], i64 1
; CHECK-NEXT:    [[EC_1:%.*]] = icmp eq i32 [[CALL]], 0
; CHECK-NEXT:    br i1 [[EC_1]], label %[[LOOP_2_HEADER_PREHEADER:.*]], label %[[LOOP_1]]
; CHECK:       [[LOOP_2_HEADER_PREHEADER]]:
; CHECK-NEXT:    [[SEL_DST_LCSSA1:%.*]] = phi ptr [ [[SEL_DST]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[PTR_IV_1_LCSSA:%.*]] = phi ptr [ [[PTR_IV_1]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[SEL_DST_LCSSA:%.*]] = phi ptr [ [[SEL_DST]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[SEL_DST_LCSSA12:%.*]] = ptrtoint ptr [[SEL_DST_LCSSA1]] to i64
; CHECK-NEXT:    br label %[[VECTOR_MEMCHECK:.*]]
; CHECK:       [[VECTOR_MEMCHECK]]:
; CHECK-NEXT:    [[TMP0:%.*]] = ptrtoint ptr [[PTR_IV_1_LCSSA]] to i64
; CHECK-NEXT:    [[TMP1:%.*]] = sub i64 [[TMP0]], [[SEL_DST_LCSSA12]]
; CHECK-NEXT:    [[DIFF_CHECK:%.*]] = icmp ult i64 [[TMP1]], 2
; CHECK-NEXT:    br i1 [[DIFF_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr i8, ptr [[PTR_IV_1_LCSSA]], i64 1022
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr i8, ptr [[SEL_DST_LCSSA]], i64 1022
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[PTR_IV_1_LCSSA]], i64 [[INDEX]]
; CHECK-NEXT:    [[NEXT_GEP4:%.*]] = getelementptr i8, ptr [[SEL_DST_LCSSA]], i64 [[INDEX]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <2 x i8>, ptr [[NEXT_GEP4]], align 1
; CHECK-NEXT:    store <2 x i8> [[WIDE_LOAD]], ptr [[NEXT_GEP]], align 1
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT:    [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1022
; CHECK-NEXT:    br i1 [[TMP6]], 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:    [[BC_RESUME_VAL:%.*]] = phi i32 [ 1023, %[[MIDDLE_BLOCK]] ], [ 1, %[[VECTOR_MEMCHECK]] ]
; CHECK-NEXT:    [[BC_RESUME_VAL4:%.*]] = phi ptr [ [[TMP2]], %[[MIDDLE_BLOCK]] ], [ [[PTR_IV_1_LCSSA]], %[[VECTOR_MEMCHECK]] ]
; CHECK-NEXT:    [[BC_RESUME_VAL5:%.*]] = phi ptr [ [[TMP3]], %[[MIDDLE_BLOCK]] ], [ [[SEL_DST_LCSSA]], %[[VECTOR_MEMCHECK]] ]
; CHECK-NEXT:    br label %[[LOOP_2_HEADER:.*]]
; CHECK:       [[LOOP_2_HEADER]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ [[DEC7:%.*]], %[[LOOP_2_LATCH:.*]] ], [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[PTR_IV_2:%.*]] = phi ptr [ [[PTR_IV_2_NEXT:%.*]], %[[LOOP_2_LATCH]] ], [ [[BC_RESUME_VAL4]], %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[PTR_IV_3:%.*]] = phi ptr [ [[PTR_IV_3_NEXT:%.*]], %[[LOOP_2_LATCH]] ], [ [[BC_RESUME_VAL5]], %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[EC_2:%.*]] = icmp eq i32 [[IV]], 1024
; CHECK-NEXT:    br i1 [[EC_2]], label %[[EXIT:.*]], label %[[LOOP_2_LATCH]]
; CHECK:       [[LOOP_2_LATCH]]:
; CHECK-NEXT:    [[DEC7]] = add i32 [[IV]], 1
; CHECK-NEXT:    [[PTR_IV_3_NEXT]] = getelementptr i8, ptr [[PTR_IV_3]], i64 1
; CHECK-NEXT:    [[L:%.*]] = load i8, ptr [[PTR_IV_3]], align 1
; CHECK-NEXT:    [[PTR_IV_2_NEXT]] = getelementptr i8, ptr [[PTR_IV_2]], i64 1
; CHECK-NEXT:    store i8 [[L]], ptr [[PTR_IV_2]], align 1
; CHECK-NEXT:    br label %[[LOOP_2_HEADER]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop.1

loop.1:
  %ptr.iv.1 = phi ptr [ %dst.1, %entry ], [ %ptr.iv.1.next, %loop.1 ]
  %call = call i32 @val()
  %sel.dst = select i1 %c, ptr %dst.1, ptr %dst.2
  %ptr.iv.1.next = getelementptr i8, ptr %ptr.iv.1, i64 1
  %ec.1 = icmp eq i32 %call, 0
  br i1 %ec.1, label %loop.2.header, label %loop.1

loop.2.header:
  %iv = phi i32 [ 1, %loop.1 ], [ %dec7, %loop.2.latch ]
  %ptr.iv.2 = phi ptr [ %ptr.iv.1, %loop.1 ], [ %ptr.iv.2.next, %loop.2.latch ]
  %ptr.iv.3 = phi ptr [ %sel.dst, %loop.1 ], [ %ptr.iv.3.next, %loop.2.latch ]
  %ec.2 = icmp eq i32 %iv, 1024
  br i1 %ec.2, label %exit, label %loop.2.latch

loop.2.latch:
  %dec7 = add i32 %iv, 1
  %ptr.iv.3.next = getelementptr i8, ptr %ptr.iv.3, i64 1
  %l = load i8, ptr %ptr.iv.3, align 1
  %ptr.iv.2.next = getelementptr i8, ptr %ptr.iv.2, i64 1
  store i8 %l, ptr %ptr.iv.2, align 1
  br label %loop.2.header

exit:
  ret void
}


declare void @foo()
declare void @bar()

define void @expand_diff_scev_unknown(ptr %dst, i1 %invar.c, i32 %step) mustprogress {
; CHECK-LABEL: define void @expand_diff_scev_unknown(
; CHECK-SAME: ptr [[DST:%.*]], i1 [[INVAR_C:%.*]], i32 [[STEP:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    br label %[[LOOP_1:.*]]
; CHECK:       [[LOOP_1]]:
; CHECK-NEXT:    [[INDVAR:%.*]] = phi i32 [ [[INDVAR_NEXT:%.*]], %[[LOOP_1]] ], [ 0, %[[ENTRY]] ]
; CHECK-NEXT:    [[IV_1:%.*]] = phi i32 [ [[STEP]], %[[ENTRY]] ], [ [[IV_1_NEXT:%.*]], %[[LOOP_1]] ]
; CHECK-NEXT:    call void @foo()
; CHECK-NEXT:    [[IV_1_NEXT]] = add i32 [[IV_1]], 1
; CHECK-NEXT:    [[INDVAR_NEXT]] = add i32 [[INDVAR]], 1
; CHECK-NEXT:    br i1 [[INVAR_C]], label %[[LOOP_2_PREHEADER:.*]], label %[[LOOP_1]]
; CHECK:       [[LOOP_2_PREHEADER]]:
; CHECK-NEXT:    [[INDVAR_LCSSA1:%.*]] = phi i32 [ [[INDVAR]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[IV_1_LCSSA:%.*]] = phi i32 [ [[IV_1]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[TMP1:%.*]] = add i32 [[IV_1_LCSSA]], [[STEP]]
; CHECK-NEXT:    [[SMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP1]], i32 0)
; CHECK-NEXT:    [[TMP2:%.*]] = mul i32 [[STEP]], -2
; CHECK-NEXT:    [[TMP3:%.*]] = mul i32 [[INDVAR_LCSSA1]], -1
; CHECK-NEXT:    [[TMP4:%.*]] = add i32 [[TMP3]], [[TMP2]]
; CHECK-NEXT:    [[TMP5:%.*]] = add i32 [[SMAX]], [[TMP4]]
; CHECK-NEXT:    [[UMIN:%.*]] = call i32 @llvm.umin.i32(i32 [[TMP5]], i32 1)
; CHECK-NEXT:    [[TMP6:%.*]] = add i32 [[UMIN]], 1
; CHECK-NEXT:    [[TMP7:%.*]] = sub i32 [[TMP5]], [[UMIN]]
; CHECK-NEXT:    [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[STEP]], i32 1)
; CHECK-NEXT:    [[TMP8:%.*]] = udiv i32 [[TMP7]], [[UMAX]]
; CHECK-NEXT:    [[TMP9:%.*]] = add i32 [[TMP6]], [[TMP8]]
; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[TMP9]], 2
; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_SCEVCHECK:.*]]
; CHECK:       [[VECTOR_SCEVCHECK]]:
; CHECK-NEXT:    [[IDENT_CHECK:%.*]] = icmp ne i32 [[STEP]], 1
; CHECK-NEXT:    br i1 [[IDENT_CHECK]], label %[[SCALAR_PH]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i32 [[TMP9]], 2
; CHECK-NEXT:    [[N_VEC:%.*]] = sub i32 [[TMP9]], [[N_MOD_VF]]
; CHECK-NEXT:    [[TMP10:%.*]] = add i32 [[IV_1_LCSSA]], [[N_VEC]]
; CHECK-NEXT:    br label %[[VECTOR_BODY:.*]]
; CHECK:       [[VECTOR_BODY]]:
; CHECK-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]
; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = add i32 [[IV_1_LCSSA]], [[INDEX]]
; CHECK-NEXT:    [[TMP11:%.*]] = getelementptr inbounds i32, ptr [[DST]], i32 [[OFFSET_IDX]]
; CHECK-NEXT:    store <2 x i32> zeroinitializer, ptr [[TMP11]], align 4
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2
; CHECK-NEXT:    [[TMP13:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[TMP13]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i32 [[TMP9]], [[N_VEC]]
; CHECK-NEXT:    br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i32 [ [[TMP10]], %[[MIDDLE_BLOCK]] ], [ [[IV_1_LCSSA]], %[[LOOP_2_PREHEADER]] ], [ [[IV_1_LCSSA]], %[[VECTOR_SCEVCHECK]] ]
; CHECK-NEXT:    br label %[[LOOP_2:.*]]
; CHECK:       [[LOOP_2]]:
; CHECK-NEXT:    [[IV_2:%.*]] = phi i32 [ [[IV_2_NEXT:%.*]], %[[LOOP_2]] ], [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[IV_2_NEXT]] = add nsw i32 [[IV_2]], [[STEP]]
; CHECK-NEXT:    [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i32 [[IV_2]]
; CHECK-NEXT:    store i32 0, ptr [[GEP_DST]], align 4
; CHECK-NEXT:    [[EC_2:%.*]] = icmp slt i32 [[IV_2_NEXT]], 0
; CHECK-NEXT:    br i1 [[EC_2]], label %[[LOOP_2]], label %[[EXIT]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop.1

loop.1:
  %iv.1 = phi i32 [ %step, %entry ], [ %iv.1.next, %loop.1 ]
  call void @foo()
  %iv.1.next = add i32 %iv.1, 1
  br i1 %invar.c, label %loop.2, label %loop.1

loop.2:
  %iv.2 = phi i32 [ %iv.1, %loop.1 ], [ %iv.2.next, %loop.2 ]
  %iv.2.next = add nsw i32 %iv.2, %step
  %gep.dst = getelementptr inbounds i32, ptr %dst, i32 %iv.2
  store i32 0, ptr %gep.dst
  %ec.2 = icmp slt i32 %iv.2.next, 0
  br i1 %ec.2, label %loop.2, label %exit

exit:
  ret void
}

define void @expand_diff_neg_ptrtoint_expr(ptr %src, ptr %start) {
; CHECK-LABEL: define void @expand_diff_neg_ptrtoint_expr(
; CHECK-SAME: ptr [[SRC:%.*]], ptr [[START:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[SRC2:%.*]] = ptrtoint ptr [[SRC]] to i64
; CHECK-NEXT:    br label %[[LOOP_1:.*]]
; CHECK:       [[LOOP_1]]:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ 1, %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[PTR_IV_1:%.*]] = phi ptr [ [[START]], %[[ENTRY]] ], [ [[PTR_IV_1_NEXT:%.*]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[PTR_IV_1_NEXT]] = getelementptr i8, ptr [[PTR_IV_1]], i64 8
; CHECK-NEXT:    call void @foo()
; CHECK-NEXT:    [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT:    [[EC_1:%.*]] = icmp eq i64 [[IV_NEXT]], 32
; CHECK-NEXT:    br i1 [[EC_1]], label %[[LOOP_2_PREHEADER:.*]], label %[[LOOP_1]]
; CHECK:       [[LOOP_2_PREHEADER]]:
; CHECK-NEXT:    [[PTR_IV_1_NEXT_LCSSA:%.*]] = phi ptr [ [[PTR_IV_1_NEXT]], %[[LOOP_1]] ]
; CHECK-NEXT:    br label %[[LOOP_2:.*]]
; CHECK:       [[LOOP_2]]:
; CHECK-NEXT:    [[IV_1:%.*]] = phi i64 [ [[IV_NEXT_1:%.*]], %[[LOOP_2]] ], [ 1, %[[LOOP_2_PREHEADER]] ]
; CHECK-NEXT:    [[PTR_IV_2:%.*]] = phi ptr [ [[PTR_IV_2_NEXT:%.*]], %[[LOOP_2]] ], [ [[PTR_IV_1_NEXT_LCSSA]], %[[LOOP_2_PREHEADER]] ]
; CHECK-NEXT:    call void @bar()
; CHECK-NEXT:    [[PTR_IV_2_NEXT]] = getelementptr i8, ptr [[PTR_IV_2]], i64 8
; CHECK-NEXT:    [[IV_NEXT_1]] = add i64 [[IV_1]], 1
; CHECK-NEXT:    [[EC_2:%.*]] = icmp eq i64 [[IV_NEXT_1]], 32
; CHECK-NEXT:    br i1 [[EC_2]], label %[[LOOP_3_PREHEADER:.*]], label %[[LOOP_2]]
; CHECK:       [[LOOP_3_PREHEADER]]:
; CHECK-NEXT:    [[TMP1:%.*]] = phi ptr [ [[PTR_IV_2_NEXT]], %[[LOOP_2]] ]
; CHECK-NEXT:    br label %[[VECTOR_MEMCHECK:.*]]
; CHECK:       [[VECTOR_MEMCHECK]]:
; CHECK-NEXT:    [[TMP0:%.*]] = sub i64 0, [[SRC2]]
; CHECK-NEXT:    [[TMP5:%.*]] = ptrtoint ptr [[TMP1]] to i64
; CHECK-NEXT:    [[TMP2:%.*]] = add i64 [[TMP5]], [[TMP0]]
; CHECK-NEXT:    [[DIFF_CHECK:%.*]] = icmp ult i64 [[TMP2]], 16
; CHECK-NEXT:    br i1 [[DIFF_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr i8, ptr [[TMP1]], i64 -16
; 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 1, [[INDEX]]
; CHECK-NEXT:    [[OFFSET_IDX5:%.*]] = mul i64 [[INDEX]], 8
; CHECK-NEXT:    [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[TMP1]], i64 [[OFFSET_IDX5]]
; CHECK-NEXT:    [[TMP7:%.*]] = add i64 [[OFFSET_IDX]], -1
; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr double, ptr [[SRC]], i64 [[TMP7]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <2 x i64>, ptr [[TMP8]], align 8
; CHECK-NEXT:    store <2 x i64> [[WIDE_LOAD]], ptr [[NEXT_GEP]], align 8
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT:    [[TMP11:%.*]] = icmp eq i64 [[INDEX_NEXT]], -2
; CHECK-NEXT:    br i1 [[TMP11]], 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:    [[BC_RESUME_VAL:%.*]] = phi i64 [ -1, %[[MIDDLE_BLOCK]] ], [ 1, %[[VECTOR_MEMCHECK]] ]
; CHECK-NEXT:    [[BC_RESUME_VAL3:%.*]] = phi ptr [ [[TMP3]], %[[MIDDLE_BLOCK]] ], [ [[TMP1]], %[[VECTOR_MEMCHECK]] ]
; CHECK-NEXT:    br label %[[LOOP_3:.*]]
; CHECK:       [[LOOP_3]]:
; CHECK-NEXT:    [[IV_2:%.*]] = phi i64 [ [[IV_NEXT_2:%.*]], %[[LOOP_3]] ], [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[PTR_IV_3:%.*]] = phi ptr [ [[PTR_IV_3_NEXT:%.*]], %[[LOOP_3]] ], [ [[BC_RESUME_VAL3]], %[[SCALAR_PH]] ]
; CHECK-NEXT:    [[TMP12:%.*]] = add i64 [[IV_2]], -1
; CHECK-NEXT:    [[GEP_SRC:%.*]] = getelementptr double, ptr [[SRC]], i64 [[TMP12]]
; CHECK-NEXT:    [[L:%.*]] = load i64, ptr [[GEP_SRC]], align 8
; CHECK-NEXT:    [[PTR_IV_3_NEXT]] = getelementptr i8, ptr [[PTR_IV_3]], i64 8
; CHECK-NEXT:    store i64 [[L]], ptr [[PTR_IV_3]], align 8
; CHECK-NEXT:    [[IV_NEXT_2]] = add i64 [[IV_2]], 1
; CHECK-NEXT:    [[EC_3:%.*]] = icmp eq i64 [[IV_NEXT_2]], 0
; CHECK-NEXT:    br i1 [[EC_3]], label %[[EXIT:.*]], label %[[LOOP_3]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop.1

loop.1:
  %iv = phi i64 [ 1, %entry ], [ %iv.next, %loop.1 ]
  %ptr.iv.1 = phi ptr [ %start, %entry ], [ %ptr.iv.1.next, %loop.1 ]
  %ptr.iv.1.next = getelementptr i8, ptr %ptr.iv.1, i64 8
  call void @foo()
  %iv.next = add i64 %iv, 1
  %ec.1 = icmp eq i64 %iv.next, 32
  br i1 %ec.1, label %loop.2, label %loop.1

loop.2:
  %iv.1 = phi i64 [ 1, %loop.1 ], [ %iv.next.1, %loop.2 ]
  %ptr.iv.2 = phi ptr [ %ptr.iv.1.next, %loop.1 ], [ %ptr.iv.2.next, %loop.2 ]
  call void @bar()
  %ptr.iv.2.next = getelementptr i8, ptr %ptr.iv.2, i64 8
  %iv.next.1 = add i64 %iv.1, 1
  %ec.2 = icmp eq i64 %iv.next.1, 32
  br i1 %ec.2, label %loop.3, label %loop.2

loop.3:
  %iv.2 = phi i64 [ 1, %loop.2 ], [ %iv.next.2, %loop.3 ]
  %ptr.iv.3 = phi ptr [ %ptr.iv.2.next, %loop.2 ], [ %ptr.iv.3.next, %loop.3 ]
  %6 = add i64 %iv.2, -1
  %gep.src = getelementptr double, ptr %src, i64 %6
  %l = load i64, ptr %gep.src, align 8
  %ptr.iv.3.next = getelementptr i8, ptr %ptr.iv.3, i64 8
  store i64 %l, ptr %ptr.iv.3, align 8
  %iv.next.2 = add i64 %iv.2, 1
  %ec.3 = icmp eq i64 %iv.next.2, 0
  br i1 %ec.3, label %exit, label %loop.3

exit:
  ret void
}


declare i1 @cond()

define void @scev_exp_reuse_const_add(ptr %dst, ptr %src) {
; CHECK-LABEL: define void @scev_exp_reuse_const_add(
; CHECK-SAME: ptr [[DST:%.*]], ptr [[SRC:%.*]]) {
; CHECK-NEXT:  [[ENTRY:.*]]:
; CHECK-NEXT:    [[SRC2:%.*]] = ptrtoint ptr [[SRC]] to i64
; CHECK-NEXT:    br label %[[LOOP_1:.*]]
; CHECK:       [[LOOP_1]]:
; CHECK-NEXT:    [[PTR_IV_1:%.*]] = phi ptr [ [[DST]], %[[ENTRY]] ], [ [[PTR_IV_1_NEXT:%.*]], %[[LOOP_1]] ]
; CHECK-NEXT:    [[PTR_IV_1_NEXT]] = getelementptr i8, ptr [[PTR_IV_1]], i64 2
; CHECK-NEXT:    [[C:%.*]] = call i1 @cond()
; CHECK-NEXT:    br i1 [[C]], label %[[LOOP_2_PH:.*]], label %[[LOOP_1]]
; CHECK:       [[LOOP_2_PH]]:
; CHECK-NEXT:    [[PTR_IV_1_NEXT_LCSSA:%.*]] = phi ptr [ [[PTR_IV_1_NEXT]], %[[LOOP_1]] ]
; CHECK-NEXT:    br label %[[VECTOR_MEMCHECK:.*]]
; CHECK:       [[VECTOR_MEMCHECK]]:
; CHECK-NEXT:    [[TMP0:%.*]] = sub i64 -2, [[SRC2]]
; CHECK-NEXT:    [[TMP1:%.*]] = ptrtoint ptr [[PTR_IV_1_NEXT_LCSSA]] to i64
; CHECK-NEXT:    [[TMP2:%.*]] = add i64 [[TMP1]], [[TMP0]]
; CHECK-NEXT:    [[DIFF_CHECK:%.*]] = icmp ult i64 [[TMP2]], 4
; CHECK-NEXT:    br i1 [[DIFF_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]
; CHECK:       [[VECTOR_PH]]:
; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr i8, ptr [[PTR_IV_1_NEXT_LCSSA]], i64 80
; 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:%.*]] = mul i64 [[INDEX]], 2
; CHECK-NEXT:    [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[PTR_IV_1_NEXT_LCSSA]], i64 [[OFFSET_IDX]]
; CHECK-NEXT:    [[TMP4:%.*]] = add i64 [[INDEX]], 1
; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr i16, ptr [[SRC]], i64 [[TMP4]]
; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <2 x i16>, ptr [[TMP5]], align 2
; CHECK-NEXT:    store <2 x i16> [[WIDE_LOAD]], ptr [[NEXT_GEP]], align 2
; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT:    [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT]], 40
; CHECK-NEXT:    br i1 [[TMP8]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK:       [[MIDDLE_BLOCK]]:
; CHECK-NEXT:    br label %[[SCALAR_PH]]
; CHECK:       [[SCALAR_PH]]:
; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 40, %[[MIDDLE_BLOCK]] ], [ 0, %[[VECTOR_MEMCHECK]] ]
; CHECK-NEXT:    [[BC_RESUME_VAL2:%.*]] = phi ptr [ [[TMP3]], %[[MIDDLE_BLOCK]] ], [ [[PTR_IV_1_NEXT_LCSSA]], %[[VECTOR_MEMCHECK]] ]
; CHECK-NEXT:    br label %[[LOOP_2:.*]]
; CHECK:       [[LOOP_2]]:
; CHECK-NEXT:    [[IV_1:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[IV_2_NEXT:%.*]], %[[LOOP_2]] ]
; CHECK-NEXT:    [[PTR_IV_2:%.*]] = phi ptr [ [[BC_RESUME_VAL2]], %[[SCALAR_PH]] ], [ [[PTR_IV_2_NEXT:%.*]], %[[LOOP_2]] ]
; CHECK-NEXT:    [[IV_2_NEXT]] = add i64 [[IV_1]], 1
; CHECK-NEXT:    [[GEP_SRC_1:%.*]] = getelementptr i16, ptr [[SRC]], i64 [[IV_2_NEXT]]
; CHECK-NEXT:    [[L:%.*]] = load i16, ptr [[GEP_SRC_1]], align 2
; CHECK-NEXT:    [[PTR_IV_2_NEXT]] = getelementptr i8, ptr [[PTR_IV_2]], i64 2
; CHECK-NEXT:    store i16 [[L]], ptr [[PTR_IV_2]], align 2
; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV_1]], 40
; CHECK-NEXT:    br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP_2]], !llvm.loop [[LOOP11:![0-9]+]]
; CHECK:       [[EXIT]]:
; CHECK-NEXT:    ret void
;
entry:
  br label %loop.1

loop.1:
  %ptr.iv.1 = phi ptr [ %dst, %entry ], [ %ptr.iv.1.next, %loop.1 ]
  %ptr.iv.1.next = getelementptr i8, ptr %ptr.iv.1, i64 2
  %c = call i1 @cond()
  br i1 %c, label %loop.2.ph, label %loop.1

loop.2.ph:
  br label %loop.2

loop.2:
  %iv.1 = phi i64 [ 0, %loop.2.ph ], [ %iv.2.next, %loop.2 ]
  %ptr.iv.2 = phi ptr [ %ptr.iv.1.next, %loop.2.ph ], [ %ptr.iv.2.next, %loop.2 ]
  %iv.2.next = add i64 %iv.1, 1
  %gep.src.1 = getelementptr i16, ptr %src, i64 %iv.2.next
  %l = load i16, ptr %gep.src.1, align 2
  %ptr.iv.2.next = getelementptr i8, ptr %ptr.iv.2, i64 2
  store i16 %l, ptr %ptr.iv.2, align 2
  %ec = icmp eq i64 %iv.1, 40
  br i1 %ec, label %exit, label %loop.2

exit:
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.cos.f64(double) #0

attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }