; LLVM IR from UtkarshPathrabe/Competitive-Coding :: Model Algorithms/Binary Search Tree/Find Triplet in BST.ll (Z14isPresentInDLLP4nodeS0_i)

; 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.node = type { i32, ptr, ptr }

; 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: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z14isPresentInDLLP4nodeS0_i(ptr noundef %0, ptr noundef %1, i32 noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %42, %3
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = icmp ne ptr %11, %12
  br i1 %13, label %14, label %43

14:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.node, ptr %15, i32 0, i32 0
  %17 = load i32, ptr %16, align 8, !tbaa !11
  %18 = load ptr, ptr %6, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.node, ptr %18, i32 0, i32 0
  %20 = load i32, ptr %19, align 8, !tbaa !11
  %21 = add nsw i32 %17, %20
  store i32 %21, ptr %8, align 4, !tbaa !9
  %22 = load i32, ptr %8, align 4, !tbaa !9
  %23 = load i32, ptr %7, align 4, !tbaa !9
  %24 = icmp eq i32 %22, %23
  br i1 %24, label %25, label %26

25:                                               ; preds = %14
  store i32 1, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %40

26:                                               ; preds = %14
  %27 = load i32, ptr %8, align 4, !tbaa !9
  %28 = load i32, ptr %7, align 4, !tbaa !9
  %29 = icmp sgt i32 %27, %28
  br i1 %29, label %30, label %34

30:                                               ; preds = %26
  %31 = load ptr, ptr %6, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.node, ptr %31, i32 0, i32 1
  %33 = load ptr, ptr %32, align 8, !tbaa !13
  store ptr %33, ptr %6, align 8, !tbaa !5
  br label %38

34:                                               ; preds = %26
  %35 = load ptr, ptr %5, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.node, ptr %35, i32 0, i32 2
  %37 = load ptr, ptr %36, align 8, !tbaa !14
  store ptr %37, ptr %5, align 8, !tbaa !5
  br label %38

38:                                               ; preds = %34, %30
  br label %39

39:                                               ; preds = %38
  store i32 0, ptr %9, align 4
  br label %40

40:                                               ; preds = %39, %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %41 = load i32, ptr %9, align 4
  switch i32 %41, label %46 [
    i32 0, label %42
    i32 1, label %44
  ]

42:                                               ; preds = %40
  br label %10, !llvm.loop !15

43:                                               ; preds = %10
  store i32 0, ptr %4, align 4
  br label %44

44:                                               ; preds = %43, %40
  %45 = load i32, ptr %4, align 4
  ret i32 %45

46:                                               ; preds = %40
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_ZTS4node", !10, i64 0, !6, i64 8, !6, i64 16}
!13 = !{!12, !6, i64 8}
!14 = !{!12, !6, i64 16}
!15 = distinct !{!15, !16}
!16 = !{!"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: mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local noundef i32 @_Z14isPresentInDLLP4nodeS0_i(ptr noundef readonly %0, ptr noundef readonly %1, i32 noundef %2) local_unnamed_addr #0 {
  %.not23 = icmp eq ptr %0, %1
  br i1 %.not23, label %.thread, label %.lr.ph

.lr.ph:                                           ; preds = %3, %16
  %.01225 = phi ptr [ %.214, %16 ], [ %0, %3 ]
  %.01524 = phi ptr [ %.217, %16 ], [ %1, %3 ]
  %4 = load i32, ptr %.01225, align 8, !tbaa !5
  %5 = load i32, ptr %.01524, align 8, !tbaa !5
  %6 = add nsw i32 %5, %4
  %7 = icmp eq i32 %6, %2
  br i1 %7, label %.thread, label %8

8:                                                ; preds = %.lr.ph
  %9 = icmp sgt i32 %6, %2
  br i1 %9, label %10, label %13

10:                                               ; preds = %8
  %11 = getelementptr inbounds i8, ptr %.01524, i64 8
  %12 = load ptr, ptr %11, align 8, !tbaa !11
  br label %16

13:                                               ; preds = %8
  %14 = getelementptr inbounds i8, ptr %.01225, i64 16
  %15 = load ptr, ptr %14, align 8, !tbaa !12
  br label %16

16:                                               ; preds = %13, %10
  %.217 = phi ptr [ %12, %10 ], [ %.01524, %13 ]
  %.214 = phi ptr [ %.01225, %10 ], [ %15, %13 ]
  %.not = icmp eq ptr %.214, %.217
  br i1 %.not, label %.thread, label %.lr.ph

.thread:                                          ; preds = %16, %.lr.ph, %3
  %.2 = phi i32 [ 0, %3 ], [ 1, %.lr.ph ], [ 0, %16 ]
  ret i32 %.2
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) 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, !7, i64 0}
!6 = !{!"_ZTS4node", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !10, i64 16}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass