; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 15. Binary Search Tree/merging-two-bst.ll (Z12storeInorderP4nodePiS1_)

; 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"

%class.node = type { i32, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z12storeInorderP4nodePiS1_(ptr noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = icmp eq ptr %7, null
  br i1 %8, label %9, label %10

9:                                                ; preds = %3
  br label %32

10:                                               ; preds = %3
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %class.node, ptr %11, i32 0, i32 1
  %13 = load ptr, ptr %12, align 8, !tbaa !9
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  call void @_Z12storeInorderP4nodePiS1_(ptr noundef %13, ptr noundef %14, ptr noundef %15)
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = getelementptr inbounds %class.node, ptr %16, i32 0, i32 0
  %18 = load i32, ptr %17, align 8, !tbaa !12
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = load i32, ptr %20, align 4, !tbaa !13
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i32, ptr %19, i64 %22
  store i32 %18, ptr %23, align 4, !tbaa !13
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  %25 = load i32, ptr %24, align 4, !tbaa !13
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %24, align 4, !tbaa !13
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = getelementptr inbounds %class.node, ptr %27, i32 0, i32 2
  %29 = load ptr, ptr %28, align 8, !tbaa !14
  %30 = load ptr, ptr %5, align 8, !tbaa !5
  %31 = load ptr, ptr %6, align 8, !tbaa !5
  call void @_Z12storeInorderP4nodePiS1_(ptr noundef %29, ptr noundef %30, ptr noundef %31)
  br label %32

32:                                               ; preds = %10, %9
  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" }

!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, !6, i64 8}
!10 = !{!"_ZTS4node", !11, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 0}
!13 = !{!11, !11, i64 0}
!14 = !{!10, !6, i64 16}


; 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 nosync nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local void @_Z12storeInorderP4nodePiS1_(ptr noundef readonly %0, ptr nocapture noundef writeonly %1, ptr nocapture noundef %2) local_unnamed_addr #0 {
  %4 = icmp eq ptr %0, null
  br i1 %4, label %tailrecurse._crit_edge, label %tailrecurse

tailrecurse:                                      ; preds = %3, %tailrecurse
  %.tr13 = phi ptr [ %14, %tailrecurse ], [ %0, %3 ]
  %5 = getelementptr inbounds i8, ptr %.tr13, i64 8
  %6 = load ptr, ptr %5, align 8, !tbaa !5
  tail call void @_Z12storeInorderP4nodePiS1_(ptr noundef %6, ptr noundef %1, ptr noundef %2)
  %7 = load i32, ptr %.tr13, align 8, !tbaa !11
  %8 = load i32, ptr %2, align 4, !tbaa !12
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds i32, ptr %1, i64 %9
  store i32 %7, ptr %10, align 4, !tbaa !12
  %11 = load i32, ptr %2, align 4, !tbaa !12
  %12 = add nsw i32 %11, 1
  store i32 %12, ptr %2, align 4, !tbaa !12
  %13 = getelementptr inbounds i8, ptr %.tr13, i64 16
  %14 = load ptr, ptr %13, align 8, !tbaa !13
  %15 = icmp eq ptr %14, null
  br i1 %15, label %tailrecurse._crit_edge, label %tailrecurse

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %3
  ret void
}

attributes #0 = { mustprogress nofree nosync nounwind memory(readwrite, 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, !10, i64 8}
!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, !7, i64 0}
!12 = !{!7, !7, i64 0}
!13 = !{!6, !10, i64 16}


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