; LLVM IR from swifterfit/algorithm :: linkedList/linkedList (designLinkedList)

; 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"

%struct.A = type { i32, ptr }

; Function Attrs: nounwind uwtable
declare dso_local void @printLinkedList(ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @myLinkedListGet(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !9
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = icmp eq ptr %9, null
  br i1 %10, label %16, label %11

11:                                               ; preds = %2
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.A, ptr %12, i32 0, i32 1
  %14 = load ptr, ptr %13, align 8, !tbaa !11
  %15 = icmp eq ptr %14, null
  br i1 %15, label %16, label %17

16:                                               ; preds = %11, %2
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %41

17:                                               ; preds = %11
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  call void @printLinkedList(ptr noundef %18)
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.A, ptr %19, i32 0, i32 1
  %21 = load ptr, ptr %20, align 8, !tbaa !11
  store ptr %21, ptr %6, align 8, !tbaa !5
  br label %22

22:                                               ; preds = %39, %17
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = icmp ne ptr %23, null
  br i1 %24, label %25, label %40

25:                                               ; preds = %22
  %26 = load i32, ptr %7, align 4, !tbaa !9
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = icmp eq i32 %26, %27
  br i1 %28, label %29, label %33

29:                                               ; preds = %25
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.A, ptr %30, i32 0, i32 0
  %32 = load i32, ptr %31, align 8, !tbaa !13
  store i32 %32, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %41

33:                                               ; preds = %25
  %34 = load i32, ptr %7, align 4, !tbaa !9
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %7, align 4, !tbaa !9
  %36 = load ptr, ptr %6, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.A, ptr %36, i32 0, i32 1
  %38 = load ptr, ptr %37, align 8, !tbaa !11
  store ptr %38, ptr %6, align 8, !tbaa !5
  br label %39

39:                                               ; preds = %33
  br label %22, !llvm.loop !14

40:                                               ; preds = %22
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %41

41:                                               ; preds = %40, %29, %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  %42 = load i32, ptr %3, align 4
  ret i32 %42
}

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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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}
!11 = !{!12, !6, i64 8}
!12 = !{!"A", !10, i64 0, !6, i64 8}
!13 = !{!12, !10, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; 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 @printLinkedList(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i32 @myLinkedListGet(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp eq ptr %0, null
  br i1 %3, label %.loopexit, label %4

4:                                                ; preds = %2
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  %6 = load ptr, ptr %5, align 8, !tbaa !5
  %7 = icmp eq ptr %6, null
  br i1 %7, label %.loopexit, label %8

8:                                                ; preds = %4
  tail call void @printLinkedList(ptr noundef nonnull %0)
  %.01014 = load ptr, ptr %5, align 8, !tbaa !5
  %.not15 = icmp eq ptr %.01014, null
  br i1 %.not15, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %8, %12
  %.01017 = phi ptr [ %.010, %12 ], [ %.01014, %8 ]
  %.016 = phi i32 [ %13, %12 ], [ 0, %8 ]
  %9 = icmp eq i32 %.016, %1
  br i1 %9, label %10, label %12

10:                                               ; preds = %.lr.ph
  %11 = load i32, ptr %.01017, align 8, !tbaa !11
  br label %.loopexit

12:                                               ; preds = %.lr.ph
  %13 = add nuw nsw i32 %.016, 1
  %14 = getelementptr inbounds i8, ptr %.01017, i64 8
  %.010 = load ptr, ptr %14, align 8, !tbaa !5
  %.not = icmp eq ptr %.010, null
  br i1 %.not, label %.loopexit, label %.lr.ph, !llvm.loop !12

.loopexit:                                        ; preds = %12, %8, %2, %4, %10
  %.011 = phi i32 [ %11, %10 ], [ -1, %4 ], [ -1, %2 ], [ -1, %8 ], [ -1, %12 ]
  ret i32 %.011
}

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)"}
!5 = !{!6, !10, i64 8}
!6 = !{!"A", !7, i64 0, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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