; LLVM IR from xxks-kkk/algo :: linkedList/integerList (integerList)

; 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: nounwind uwtable
declare dso_local void @addDigit(i32 noundef, ptr noundef) #1

; 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
declare dso_local ptr @makeEmpty() #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @multiply(ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @powIntegerList(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %7 = load i32, ptr %5, align 4, !tbaa !9
  %8 = icmp eq i32 %7, 0
  br i1 %8, label %9, label %13

9:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %10 = call ptr @makeEmpty()
  store ptr %10, ptr %6, align 8, !tbaa !5
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  call void @addDigit(i32 noundef 1, ptr noundef %11)
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %12, ptr %3, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  br label %38

13:                                               ; preds = %2
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = icmp eq i32 %14, 1
  br i1 %15, label %16, label %18

16:                                               ; preds = %13
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %17, ptr %3, align 8
  br label %38

18:                                               ; preds = %13
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = srem i32 %19, 2
  %21 = icmp eq i32 %20, 0
  br i1 %21, label %22, label %29

22:                                               ; preds = %18
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = call ptr @multiply(ptr noundef %23, ptr noundef %24)
  %26 = load i32, ptr %5, align 4, !tbaa !9
  %27 = sdiv i32 %26, 2
  %28 = call ptr @powIntegerList(ptr noundef %25, i32 noundef %27)
  store ptr %28, ptr %3, align 8
  br label %38

29:                                               ; preds = %18
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = call ptr @multiply(ptr noundef %30, ptr noundef %31)
  %33 = load i32, ptr %5, align 4, !tbaa !9
  %34 = sdiv i32 %33, 2
  %35 = call ptr @powIntegerList(ptr noundef %32, i32 noundef %34)
  %36 = load ptr, ptr %4, align 8, !tbaa !5
  %37 = call ptr @multiply(ptr noundef %35, ptr noundef %36)
  store ptr %37, ptr %3, align 8
  br label %38

38:                                               ; preds = %29, %22, %16, %9
  %39 = load ptr, ptr %3, align 8
  ret ptr %39
}

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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}


; 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: nounwind uwtable
declare dso_local void @addDigit(i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local ptr @makeEmpty() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local ptr @multiply(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local ptr @powIntegerList(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  br label %tailrecurse

tailrecurse:                                      ; preds = %9, %2
  %.tr = phi ptr [ %0, %2 ], [ %8, %9 ]
  %.tr14 = phi i32 [ %1, %2 ], [ %10, %9 ]
  switch i32 %.tr14, label %5 [
    i32 0, label %3
    i32 1, label %common.ret39
  ]

3:                                                ; preds = %tailrecurse
  %4 = tail call ptr @makeEmpty()
  tail call void @addDigit(i32 noundef 1, ptr noundef %4)
  br label %common.ret39

5:                                                ; preds = %tailrecurse
  %6 = and i32 %.tr14, 1
  %7 = icmp eq i32 %6, 0
  %8 = tail call ptr @multiply(ptr noundef %.tr, ptr noundef %.tr)
  br i1 %7, label %9, label %11

9:                                                ; preds = %5
  %10 = ashr exact i32 %.tr14, 1
  br label %tailrecurse

common.ret39:                                     ; preds = %3, %tailrecurse, %11
  %common.ret39.op = phi ptr [ %14, %11 ], [ %4, %3 ], [ %.tr, %tailrecurse ]
  ret ptr %common.ret39.op

11:                                               ; preds = %5
  %12 = sdiv i32 %.tr14, 2
  %13 = tail call ptr @powIntegerList(ptr noundef %8, i32 noundef %12)
  %14 = tail call ptr @multiply(ptr noundef %13, ptr noundef %.tr)
  br label %common.ret39
}

attributes #0 = { 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" }

!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)"}


; Effective O3 passes: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass