; LLVM IR from AlgoGenesis/C :: Trie/Maximum XOR (Program)

; 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.TrieNode = type { [2 x ptr] }

; Function Attrs: nounwind uwtable
declare dso_local ptr @createBinaryNode() #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 void @insertBinaryTrie(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %8, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 31, ptr %6, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %39, %2
  %10 = load i32, ptr %6, align 4, !tbaa !9
  %11 = icmp sge i32 %10, 0
  br i1 %11, label %13, label %12

12:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %42

13:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %14 = load i32, ptr %4, align 4, !tbaa !9
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = ashr i32 %14, %15
  %17 = and i32 %16, 1
  store i32 %17, ptr %7, align 4, !tbaa !9
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.TrieNode, ptr %18, i32 0, i32 0
  %20 = load i32, ptr %7, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [2 x ptr], ptr %19, i64 0, i64 %21
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  %24 = icmp ne ptr %23, null
  br i1 %24, label %32, label %25

25:                                               ; preds = %13
  %26 = call ptr @createBinaryNode()
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.TrieNode, ptr %27, i32 0, i32 0
  %29 = load i32, ptr %7, align 4, !tbaa !9
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [2 x ptr], ptr %28, i64 0, i64 %30
  store ptr %26, ptr %31, align 8, !tbaa !5
  br label %32

32:                                               ; preds = %25, %13
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.TrieNode, ptr %33, i32 0, i32 0
  %35 = load i32, ptr %7, align 4, !tbaa !9
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds [2 x ptr], ptr %34, i64 0, i64 %36
  %38 = load ptr, ptr %37, align 8, !tbaa !5
  store ptr %38, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %39

39:                                               ; preds = %32
  %40 = load i32, ptr %6, align 4, !tbaa !9
  %41 = add nsw i32 %40, -1
  store i32 %41, ptr %6, align 4, !tbaa !9
  br label %9, !llvm.loop !11

42:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret void
}

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 = distinct !{!11, !12}
!12 = !{!"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 ptr @createBinaryNode() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @insertBinaryTrie(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  br label %4

3:                                                ; preds = %12
  ret void

4:                                                ; preds = %2, %12
  %.012 = phi ptr [ %0, %2 ], [ %13, %12 ]
  %.01011 = phi i32 [ 31, %2 ], [ %14, %12 ]
  %5 = lshr i32 %1, %.01011
  %6 = and i32 %5, 1
  %7 = zext nneg i32 %6 to i64
  %8 = getelementptr inbounds [2 x ptr], ptr %.012, i64 0, i64 %7
  %9 = load ptr, ptr %8, align 8, !tbaa !5
  %.not = icmp eq ptr %9, null
  br i1 %.not, label %10, label %12

10:                                               ; preds = %4
  %11 = tail call ptr @createBinaryNode()
  store ptr %11, ptr %8, align 8, !tbaa !5
  br label %12

12:                                               ; preds = %10, %4
  %13 = phi ptr [ %11, %10 ], [ %9, %4 ]
  %14 = add nsw i32 %.01011, -1
  %.not13 = icmp eq i32 %.01011, 0
  br i1 %.not13, label %3, label %4, !llvm.loop !9
}

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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass