; LLVM IR from Dev-XYS/Algorithms :: Persistent-Treap.ll (Z4findRP4nodei)

; 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 { [2 x ptr], i32, i32 }

; 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
declare dso_local noundef i32 @_Z3cmpii(i32 noundef, i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z4findRP4nodei(ptr noundef nonnull align 8 dereferenceable(8) %0, i32 noundef %1) #2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = load ptr, ptr %8, align 8, !tbaa !5
  %10 = icmp eq ptr %9, null
  br i1 %10, label %11, label %12

11:                                               ; preds = %2
  store i32 -1, ptr %3, align 4
  br label %32

12:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = load ptr, ptr %14, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.node, ptr %15, i32 0, i32 1
  %17 = load i32, ptr %16, align 8, !tbaa !11
  %18 = call noundef i32 @_Z3cmpii(i32 noundef %13, i32 noundef %17)
  store i32 %18, ptr %6, align 4, !tbaa !9
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = icmp eq i32 %19, -1
  br i1 %20, label %21, label %22

21:                                               ; preds = %12
  store i32 1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

22:                                               ; preds = %12
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = load ptr, ptr %23, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.node, ptr %24, i32 0, i32 0
  %26 = load i32, ptr %6, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds [2 x ptr], ptr %25, i64 0, i64 %27
  %29 = load i32, ptr %5, align 4, !tbaa !9
  %30 = call noundef i32 @_Z4findRP4nodei(ptr noundef nonnull align 8 dereferenceable(8) %28, i32 noundef %29)
  store i32 %30, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

31:                                               ; preds = %22, %21
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %32

32:                                               ; preds = %31, %11
  %33 = load i32, ptr %3, align 4
  ret i32 %33
}

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 = { mustprogress 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 #3 = { 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 16}
!12 = !{!"_ZTS4node", !7, i64 0, !10, i64 16, !10, i64 20}


; 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 nounwind uwtable
declare dso_local noundef i32 @_Z3cmpii(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef range(i32 -1, 2) i32 @_Z4findRP4nodei(ptr nocapture noundef nonnull readonly align 8 dereferenceable(8) %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %4 = icmp eq ptr %3, null
  br i1 %4, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %tailrecurse
  %5 = phi ptr [ %13, %tailrecurse ], [ %3, %2 ]
  %.tr10 = phi ptr [ %12, %tailrecurse ], [ %0, %2 ]
  %6 = getelementptr inbounds i8, ptr %5, i64 16
  %7 = load i32, ptr %6, align 8, !tbaa !9
  %8 = tail call noundef i32 @_Z3cmpii(i32 noundef %1, i32 noundef %7)
  %9 = icmp eq i32 %8, -1
  br i1 %9, label %._crit_edge, label %tailrecurse

tailrecurse:                                      ; preds = %.lr.ph
  %10 = load ptr, ptr %.tr10, align 8, !tbaa !5
  %11 = sext i32 %8 to i64
  %12 = getelementptr inbounds [2 x ptr], ptr %10, i64 0, i64 %11
  %13 = load ptr, ptr %12, align 8, !tbaa !5
  %14 = icmp eq ptr %13, null
  br i1 %14, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %tailrecurse, %.lr.ph, %2
  %.1 = phi i32 [ -1, %2 ], [ 1, %.lr.ph ], [ -1, %tailrecurse ]
  ret i32 %.1
}

attributes #0 = { 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" }

!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, !11, i64 16}
!10 = !{!"_ZTS4node", !7, i64 0, !11, i64 16, !11, i64 20}
!11 = !{!"int", !7, i64 0}


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