; LLVM IR from MostafaTwfiq/C-DataStructures-And-Algorithms :: DataStructure/Trees/Sources (RedBlackTree)

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

; Function Attrs: nounwind uwtable
define dso_local i32 @isCaseOne(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds %struct.RBNode, ptr %3, i32 0, i32 1
  %5 = load i32, ptr %4, align 8, !tbaa !9
  %6 = icmp eq i32 %5, 0
  br i1 %6, label %7, label %25

7:                                                ; preds = %1
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.RBNode, ptr %8, i32 0, i32 4
  %10 = load ptr, ptr %9, align 8, !tbaa !12
  %11 = call i32 @getNodeColor(ptr noundef %10)
  %12 = icmp eq i32 %11, 0
  br i1 %12, label %13, label %25

13:                                               ; preds = %7
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.RBNode, ptr %14, i32 0, i32 4
  %16 = load ptr, ptr %15, align 8, !tbaa !12
  %17 = getelementptr inbounds %struct.RBNode, ptr %16, i32 0, i32 4
  %18 = load ptr, ptr %17, align 8, !tbaa !12
  %19 = icmp ne ptr %18, null
  br i1 %19, label %20, label %25

20:                                               ; preds = %13
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = call ptr @getUncle(ptr noundef %21)
  %23 = call i32 @getNodeColor(ptr noundef %22)
  %24 = icmp eq i32 %23, 0
  br label %25

25:                                               ; preds = %20, %13, %7, %1
  %26 = phi i1 [ false, %13 ], [ false, %7 ], [ false, %1 ], [ %24, %20 ]
  %27 = zext i1 %26 to i32
  ret i32 %27
}

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

; Function Attrs: nounwind uwtable
declare dso_local i32 @getNodeColor(ptr noundef) #0

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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 8}
!10 = !{!"RBNode", !6, i64 0, !11, i64 8, !6, i64 16, !6, i64 24, !6, i64 32}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !6, i64 32}


; 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
define dso_local range(i32 0, 2) i32 @isCaseOne(ptr noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %4 = icmp eq i32 %3, 0
  br i1 %4, label %5, label %19

5:                                                ; preds = %1
  %6 = getelementptr inbounds i8, ptr %0, i64 32
  %7 = load ptr, ptr %6, align 8, !tbaa !11
  %8 = tail call i32 @getNodeColor(ptr noundef %7)
  %9 = icmp eq i32 %8, 0
  br i1 %9, label %10, label %19

10:                                               ; preds = %5
  %11 = load ptr, ptr %6, align 8, !tbaa !11
  %12 = getelementptr inbounds i8, ptr %11, i64 32
  %13 = load ptr, ptr %12, align 8, !tbaa !11
  %.not = icmp eq ptr %13, null
  br i1 %.not, label %19, label %14

14:                                               ; preds = %10
  %15 = tail call ptr @getUncle(ptr noundef nonnull %0)
  %16 = tail call i32 @getNodeColor(ptr noundef %15)
  %17 = icmp eq i32 %16, 0
  %18 = zext i1 %17 to i32
  br label %19

19:                                               ; preds = %14, %10, %5, %1
  %20 = phi i32 [ 0, %10 ], [ 0, %5 ], [ 0, %1 ], [ %18, %14 ]
  ret i32 %20
}

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

; Function Attrs: nounwind uwtable
declare dso_local i32 @getNodeColor(ptr noundef) local_unnamed_addr #0

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 = !{!"RBNode", !7, i64 0, !10, i64 8, !7, i64 16, !7, i64 24, !7, i64 32}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 32}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InstCombinePass,SROAPass,TailCallElimPass