; LLVM IR from sympiler/nasoq :: src/common/Etree.ll (ZN5nasoq12update_etreeEiiPiS0_)

; 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: mustprogress nounwind uwtable
define dso_local void @_ZN5nasoq12update_etreeEiiPiS0_(i32 noundef %0, i32 noundef %1, ptr noundef %2, ptr noundef %3) #0 {
  %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
  %10 = 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
  br label %11

11:                                               ; preds = %35, %4
  %12 = load ptr, ptr %8, align 8, !tbaa !9
  %13 = load i32, ptr %5, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds i32, ptr %12, i64 %14
  %16 = load i32, ptr %15, align 4, !tbaa !5
  store i32 %16, ptr %9, align 4, !tbaa !5
  %17 = load i32, ptr %9, align 4, !tbaa !5
  %18 = load i32, ptr %6, align 4, !tbaa !5
  %19 = icmp eq i32 %17, %18
  br i1 %19, label %20, label %21

20:                                               ; preds = %11
  store i32 1, ptr %10, align 4
  br label %37

21:                                               ; preds = %11
  %22 = load i32, ptr %6, align 4, !tbaa !5
  %23 = load ptr, ptr %8, align 8, !tbaa !9
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds i32, ptr %23, i64 %25
  store i32 %22, ptr %26, align 4, !tbaa !5
  %27 = load i32, ptr %9, align 4, !tbaa !5
  %28 = icmp eq i32 %27, -1
  br i1 %28, label %29, label %35

29:                                               ; preds = %21
  %30 = load i32, ptr %6, align 4, !tbaa !5
  %31 = load ptr, ptr %7, align 8, !tbaa !9
  %32 = load i32, ptr %5, align 4, !tbaa !5
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds i32, ptr %31, i64 %33
  store i32 %30, ptr %34, align 4, !tbaa !5
  store i32 1, ptr %10, align 4
  br label %37

35:                                               ; preds = %21
  %36 = load i32, ptr %9, align 4, !tbaa !5
  store i32 %36, ptr %5, align 4, !tbaa !5
  br label %11, !llvm.loop !11

37:                                               ; preds = %29, %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  ret void
}

; 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

attributes #0 = { 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 #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 = !{!"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 memory(argmem: readwrite) uwtable
define dso_local void @_ZN5nasoq12update_etreeEiiPiS0_(i32 noundef %0, i32 noundef %1, ptr nocapture noundef writeonly %2, ptr nocapture noundef %3) local_unnamed_addr #0 {
  br label %5

5:                                                ; preds = %10, %4
  %.0 = phi i32 [ %0, %4 ], [ %8, %10 ]
  %6 = sext i32 %.0 to i64
  %7 = getelementptr inbounds i32, ptr %3, i64 %6
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = icmp eq i32 %8, %1
  br i1 %9, label %.loopexit, label %10

10:                                               ; preds = %5
  store i32 %1, ptr %7, align 4, !tbaa !5
  %11 = icmp eq i32 %8, -1
  br i1 %11, label %12, label %5, !llvm.loop !9

12:                                               ; preds = %10
  %13 = getelementptr inbounds i32, ptr %2, i64 %6
  store i32 %1, ptr %13, align 4, !tbaa !5
  br label %.loopexit

.loopexit:                                        ; preds = %5, %12
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(argmem: readwrite) 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: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass