; LLVM IR from sympiler/nasoq :: src/common/TreeUtils.ll (ZN5nasoq12getNodeDepthEiiPKiPi)

; 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"

; 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
define dso_local noundef i32 @_ZN5nasoq12getNodeDepthEiiPKiPi(i32 noundef %0, i32 noundef %1, ptr noundef %2, ptr noundef %3) #1 {
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !9
  store ptr %3, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !5
  %10 = load ptr, ptr %8, align 8, !tbaa !9
  %11 = icmp ne ptr %10, null
  br i1 %11, label %12, label %20

12:                                               ; preds = %4
  %13 = load ptr, ptr %8, align 8, !tbaa !9
  %14 = load i32, ptr %5, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds i32, ptr %13, i64 %15
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %18 = load i32, ptr %9, align 4, !tbaa !5
  %19 = add nsw i32 %18, %17
  store i32 %19, ptr %9, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %12, %4
  br label %21

21:                                               ; preds = %47, %20
  %22 = load ptr, ptr %7, align 8, !tbaa !9
  %23 = load i32, ptr %5, align 4, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds i32, ptr %22, i64 %24
  %26 = load i32, ptr %25, align 4, !tbaa !5
  %27 = icmp sge i32 %26, 0
  br i1 %27, label %28, label %48

28:                                               ; preds = %21
  %29 = load ptr, ptr %7, align 8, !tbaa !9
  %30 = load i32, ptr %5, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds i32, ptr %29, i64 %31
  %33 = load i32, ptr %32, align 4, !tbaa !5
  store i32 %33, ptr %5, align 4, !tbaa !5
  %34 = load ptr, ptr %8, align 8, !tbaa !9
  %35 = icmp eq ptr %34, null
  br i1 %35, label %36, label %39

36:                                               ; preds = %28
  %37 = load i32, ptr %9, align 4, !tbaa !5
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %9, align 4, !tbaa !5
  br label %47

39:                                               ; preds = %28
  %40 = load ptr, ptr %8, align 8, !tbaa !9
  %41 = load i32, ptr %5, align 4, !tbaa !5
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds i32, ptr %40, i64 %42
  %44 = load i32, ptr %43, align 4, !tbaa !5
  %45 = load i32, ptr %9, align 4, !tbaa !5
  %46 = add nsw i32 %45, %44
  store i32 %46, ptr %9, align 4, !tbaa !5
  br label %47

47:                                               ; preds = %39, %36
  br label %21, !llvm.loop !11

48:                                               ; preds = %21
  %49 = load i32, ptr %9, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  ret i32 %49
}

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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef i32 @_ZN5nasoq12getNodeDepthEiiPKiPi(i32 noundef %0, i32 noundef %1, ptr nocapture noundef readonly %2, ptr noundef readonly %3) local_unnamed_addr #0 {
  %.not = icmp eq ptr %3, null
  %.pre = sext i32 %0 to i64
  br i1 %.not, label %5, label %.thread

5:                                                ; preds = %4
  %6 = getelementptr inbounds i32, ptr %2, i64 %.pre
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = icmp sgt i32 %7, -1
  br i1 %8, label %.lr.ph.split.us, label %._crit_edge

.thread:                                          ; preds = %4
  %9 = getelementptr inbounds i32, ptr %3, i64 %.pre
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = getelementptr inbounds i32, ptr %2, i64 %.pre
  %12 = load i32, ptr %11, align 4, !tbaa !5
  %13 = icmp sgt i32 %12, -1
  br i1 %13, label %.lr.ph.split, label %._crit_edge

.lr.ph.split.us:                                  ; preds = %5, %.lr.ph.split.us
  %14 = phi i32 [ %18, %.lr.ph.split.us ], [ %7, %5 ]
  %.117.us = phi i32 [ %15, %.lr.ph.split.us ], [ 0, %5 ]
  %15 = add nuw nsw i32 %.117.us, 1
  %16 = zext nneg i32 %14 to i64
  %17 = getelementptr inbounds i32, ptr %2, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = icmp sgt i32 %18, -1
  br i1 %19, label %.lr.ph.split.us, label %._crit_edge, !llvm.loop !9

.lr.ph.split:                                     ; preds = %.thread, %.lr.ph.split
  %20 = phi i32 [ %26, %.lr.ph.split ], [ %12, %.thread ]
  %.117 = phi i32 [ %24, %.lr.ph.split ], [ %10, %.thread ]
  %21 = zext nneg i32 %20 to i64
  %22 = getelementptr inbounds i32, ptr %3, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = add nsw i32 %23, %.117
  %25 = getelementptr inbounds i32, ptr %2, i64 %21
  %26 = load i32, ptr %25, align 4, !tbaa !5
  %27 = icmp sgt i32 %26, -1
  br i1 %27, label %.lr.ph.split, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph.split, %.lr.ph.split.us, %.thread, %5
  %.1.lcssa = phi i32 [ 0, %5 ], [ %10, %.thread ], [ %15, %.lr.ph.split.us ], [ %24, %.lr.ph.split ]
  ret i32 %.1.lcssa
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass