; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 21. Trie/Maximum_Subarray_XOR.ll (Z6insertP8TrieNodei)

; 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 { i32, [2 x ptr] }

; Function Attrs: mustprogress uwtable
declare dso_local noundef ptr @_Z7newNodev() #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: mustprogress uwtable
define dso_local void @_Z6insertP8TrieNodei(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 i8, align 1
  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 = %44, %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 %47

13:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #2
  %14 = load i32, ptr %4, align 4, !tbaa !9
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = shl i32 1, %15
  %17 = and i32 %14, %16
  %18 = icmp ne i32 %17, 0
  %19 = zext i1 %18 to i8
  store i8 %19, ptr %7, align 1, !tbaa !11
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.TrieNode, ptr %20, i32 0, i32 1
  %22 = load i8, ptr %7, align 1, !tbaa !11, !range !13, !noundef !14
  %23 = trunc i8 %22 to i1
  %24 = zext i1 %23 to i64
  %25 = getelementptr inbounds [2 x ptr], ptr %21, i64 0, i64 %24
  %26 = load ptr, ptr %25, align 8, !tbaa !5
  %27 = icmp eq ptr %26, null
  br i1 %27, label %28, label %36

28:                                               ; preds = %13
  %29 = call noundef ptr @_Z7newNodev()
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.TrieNode, ptr %30, i32 0, i32 1
  %32 = load i8, ptr %7, align 1, !tbaa !11, !range !13, !noundef !14
  %33 = trunc i8 %32 to i1
  %34 = zext i1 %33 to i64
  %35 = getelementptr inbounds [2 x ptr], ptr %31, i64 0, i64 %34
  store ptr %29, ptr %35, align 8, !tbaa !5
  br label %36

36:                                               ; preds = %28, %13
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.TrieNode, ptr %37, i32 0, i32 1
  %39 = load i8, ptr %7, align 1, !tbaa !11, !range !13, !noundef !14
  %40 = trunc i8 %39 to i1
  %41 = zext i1 %40 to i64
  %42 = getelementptr inbounds [2 x ptr], ptr %38, i64 0, i64 %41
  %43 = load ptr, ptr %42, align 8, !tbaa !5
  store ptr %43, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #2
  br label %44

44:                                               ; preds = %36
  %45 = load i32, ptr %6, align 4, !tbaa !9
  %46 = add nsw i32 %45, -1
  store i32 %46, ptr %6, align 4, !tbaa !9
  br label %9, !llvm.loop !15

47:                                               ; preds = %12
  %48 = load i32, ptr %4, align 4, !tbaa !9
  %49 = load ptr, ptr %5, align 8, !tbaa !5
  %50 = getelementptr inbounds %struct.TrieNode, ptr %49, i32 0, i32 0
  store i32 %48, ptr %50, align 8, !tbaa !17
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret void
}

attributes #0 = { 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 #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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"bool", !7, i64 0}
!13 = !{i8 0, i8 2}
!14 = !{}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}
!17 = !{!18, !10, i64 0}
!18 = !{!"_ZTS8TrieNode", !10, i64 0, !7, i64 8}


; 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 uwtable
declare dso_local noundef ptr @_Z7newNodev() local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6insertP8TrieNodei(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  br label %4

3:                                                ; preds = %15
  store i32 %1, ptr %16, align 8, !tbaa !5
  ret void

4:                                                ; preds = %2, %15
  %.014 = phi ptr [ %0, %2 ], [ %16, %15 ]
  %.01213 = phi i32 [ 31, %2 ], [ %17, %15 ]
  %5 = shl nuw i32 1, %.01213
  %6 = and i32 %5, %1
  %7 = icmp ne i32 %6, 0
  %8 = getelementptr inbounds i8, ptr %.014, i64 8
  %9 = zext i1 %7 to i64
  %10 = getelementptr inbounds [2 x ptr], ptr %8, i64 0, i64 %9
  %11 = load ptr, ptr %10, align 8, !tbaa !10
  %12 = icmp eq ptr %11, null
  br i1 %12, label %13, label %15

13:                                               ; preds = %4
  %14 = tail call noundef ptr @_Z7newNodev()
  store ptr %14, ptr %10, align 8, !tbaa !10
  br label %15

15:                                               ; preds = %13, %4
  %16 = phi ptr [ %14, %13 ], [ %11, %4 ]
  %17 = add nsw i32 %.01213, -1
  %.not = icmp eq i32 %.01213, 0
  br i1 %.not, label %3, label %4, !llvm.loop !12
}

attributes #0 = { 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" }

!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 = !{!"_ZTS8TrieNode", !7, i64 0, !8, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!11, !11, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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