; LLVM IR from xxks-kkk/algo :: linkedList/self-adjusting (arrayList)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local i32 @arrayFind(i32 noundef %0, ptr noundef %1, i32 noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %51, %3
  %12 = load i32, ptr %8, align 4, !tbaa !5
  %13 = load i32, ptr %7, align 4, !tbaa !5
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %15, label %54

15:                                               ; preds = %11
  %16 = load ptr, ptr %6, align 8, !tbaa !9
  %17 = load i32, ptr %8, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds i32, ptr %16, i64 %18
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %21 = load i32, ptr %5, align 4, !tbaa !5
  %22 = icmp eq i32 %20, %21
  br i1 %22, label %23, label %50

23:                                               ; preds = %15
  store i32 0, ptr %9, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %43, %23
  %25 = load i32, ptr %9, align 4, !tbaa !5
  %26 = load i32, ptr %8, align 4, !tbaa !5
  %27 = icmp slt i32 %25, %26
  br i1 %27, label %28, label %46

28:                                               ; preds = %24
  %29 = load ptr, ptr %6, align 8, !tbaa !9
  %30 = load i32, ptr %8, align 4, !tbaa !5
  %31 = load i32, ptr %9, align 4, !tbaa !5
  %32 = sub nsw i32 %30, %31
  %33 = sub nsw i32 %32, 1
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds i32, ptr %29, i64 %34
  %36 = load i32, ptr %35, align 4, !tbaa !5
  %37 = load ptr, ptr %6, align 8, !tbaa !9
  %38 = load i32, ptr %8, align 4, !tbaa !5
  %39 = load i32, ptr %9, align 4, !tbaa !5
  %40 = sub nsw i32 %38, %39
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds i32, ptr %37, i64 %41
  store i32 %36, ptr %42, align 4, !tbaa !5
  br label %43

43:                                               ; preds = %28
  %44 = load i32, ptr %9, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %9, align 4, !tbaa !5
  br label %24, !llvm.loop !11

46:                                               ; preds = %24
  %47 = load i32, ptr %5, align 4, !tbaa !5
  %48 = load ptr, ptr %6, align 8, !tbaa !9
  %49 = getelementptr inbounds i32, ptr %48, i64 0
  store i32 %47, ptr %49, align 4, !tbaa !5
  store i32 0, ptr %4, align 4
  store i32 1, ptr %10, align 4
  br label %55

50:                                               ; preds = %15
  br label %51

51:                                               ; preds = %50
  %52 = load i32, ptr %8, align 4, !tbaa !5
  %53 = add nsw i32 %52, 1
  store i32 %53, ptr %8, align 4, !tbaa !5
  br label %11, !llvm.loop !13

54:                                               ; preds = %11
  store i32 -1, ptr %4, align 4
  store i32 1, ptr %10, align 4
  br label %55

55:                                               ; preds = %54, %46
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %56 = load i32, ptr %4, align 4
  ret i32 %56
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local range(i32 -1, 1) i32 @arrayFind(i32 noundef %0, ptr nocapture noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = icmp sgt i32 %2, 0
  br i1 %4, label %.lr.ph.preheader, label %.loopexit

.lr.ph.preheader:                                 ; preds = %3
  %wide.trip.count = zext nneg i32 %2 to i64
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %20
  %indvars.iv33 = phi i32 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next34, %20 ]
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %20 ]
  %5 = getelementptr inbounds i32, ptr %1, i64 %indvars.iv
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %7 = icmp eq i32 %6, %0
  br i1 %7, label %.preheader, label %20

.preheader:                                       ; preds = %.lr.ph
  %.not = icmp eq i64 %indvars.iv, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph23.preheader

.lr.ph23.preheader:                               ; preds = %.preheader
  %sext = shl i64 %indvars.iv, 32
  %8 = ashr exact i64 %sext, 32
  %wide.trip.count36 = zext nneg i32 %indvars.iv33 to i64
  %min.iters.check = icmp ult i32 %indvars.iv33, 8
  br i1 %min.iters.check, label %.lr.ph23.preheader46, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph23.preheader
  %n.vec = and i64 %wide.trip.count36, 2147483640
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %9 = sub nsw i64 %8, %index
  %10 = getelementptr i32, ptr %1, i64 %9
  %11 = getelementptr i8, ptr %10, i64 -16
  %12 = getelementptr i8, ptr %10, i64 -32
  %wide.load = load <4 x i32>, ptr %11, align 4, !tbaa !5
  %wide.load42 = load <4 x i32>, ptr %12, align 4, !tbaa !5
  %13 = getelementptr i8, ptr %10, i64 -12
  %14 = getelementptr i8, ptr %10, i64 -28
  store <4 x i32> %wide.load, ptr %13, align 4, !tbaa !5
  store <4 x i32> %wide.load42, ptr %14, align 4, !tbaa !5
  %index.next = add nuw i64 %index, 8
  %15 = icmp eq i64 %index.next, %n.vec
  br i1 %15, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count36
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph23.preheader46

.lr.ph23.preheader46:                             ; preds = %middle.block, %.lr.ph23.preheader
  %indvars.iv30.ph = phi i64 [ 0, %.lr.ph23.preheader ], [ %n.vec, %middle.block ]
  br label %.lr.ph23

.lr.ph23:                                         ; preds = %.lr.ph23.preheader46, %.lr.ph23
  %indvars.iv30 = phi i64 [ %indvars.iv.next31, %.lr.ph23 ], [ %indvars.iv30.ph, %.lr.ph23.preheader46 ]
  %16 = sub nsw i64 %8, %indvars.iv30
  %17 = getelementptr i32, ptr %1, i64 %16
  %18 = getelementptr i8, ptr %17, i64 -4
  %19 = load i32, ptr %18, align 4, !tbaa !5
  store i32 %19, ptr %17, align 4, !tbaa !5
  %indvars.iv.next31 = add nuw nsw i64 %indvars.iv30, 1
  %exitcond37.not = icmp eq i64 %indvars.iv.next31, %wide.trip.count36
  br i1 %exitcond37.not, label %._crit_edge, label %.lr.ph23, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph23, %middle.block, %.preheader
  store i32 %0, ptr %1, align 4, !tbaa !5
  br label %.loopexit

20:                                               ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  %indvars.iv.next34 = add nuw nsw i32 %indvars.iv33, 1
  br i1 %exitcond.not, label %.loopexit, label %.lr.ph, !llvm.loop !14

.loopexit:                                        ; preds = %20, %3, %._crit_edge
  %.018 = phi i32 [ 0, %._crit_edge ], [ -1, %3 ], [ -1, %20 ]
  ret i32 %.018
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10, !12, !11}
!14 = distinct !{!14, !10}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass