; LLVM IR from tangjz/acm-icpc :: hdu/5994.ll (Z6kd_setii)

; 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.Node = type { i32, i32, i32, [2 x i32], [2 x i32], [2 x i32], i32, i32, i32, i32 }

@tree = external dso_local global [200001 x %struct.Node], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z5kd_upi(i32 noundef) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z9kd_accessi(i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6kd_setii(i32 noundef %0, i32 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  %5 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z9kd_accessi(i32 noundef %5)
  %6 = load i32, ptr %4, align 4, !tbaa !5
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = sext i32 %7 to i64
  %9 = getelementptr inbounds [200001 x %struct.Node], ptr @tree, i64 0, i64 %8
  %10 = getelementptr inbounds %struct.Node, ptr %9, i32 0, i32 6
  store i32 %6, ptr %10, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %16, %2
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = icmp ne i32 %12, 0
  br i1 %13, label %14, label %22

14:                                               ; preds = %11
  %15 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z5kd_upi(i32 noundef %15)
  br label %16

16:                                               ; preds = %14
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [200001 x %struct.Node], ptr @tree, i64 0, i64 %18
  %20 = getelementptr inbounds %struct.Node, ptr %19, i32 0, i32 0
  %21 = load i32, ptr %20, align 4, !tbaa !11
  store i32 %21, ptr %3, align 4, !tbaa !5
  br label %11, !llvm.loop !12

22:                                               ; preds = %11
  ret void
}

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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 36}
!10 = !{!"_ZTS4Node", !6, i64 0, !6, i64 4, !6, i64 8, !7, i64 12, !7, i64 20, !7, i64 28, !6, i64 36, !6, i64 40, !6, i64 44, !6, i64 48}
!11 = !{!10, !6, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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"

%struct.Node = type { i32, i32, i32, [2 x i32], [2 x i32], [2 x i32], i32, i32, i32, i32 }

@tree = external dso_local local_unnamed_addr global [200001 x %struct.Node], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z5kd_upi(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z9kd_accessi(i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6kd_setii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #1 {
  tail call void @_Z9kd_accessi(i32 noundef %0)
  %3 = sext i32 %0 to i64
  %4 = getelementptr inbounds [200001 x %struct.Node], ptr @tree, i64 0, i64 %3, i32 6
  store i32 %1, ptr %4, align 4, !tbaa !5
  %.not6 = icmp eq i32 %0, 0
  br i1 %.not6, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.07 = phi i32 [ %7, %.lr.ph ], [ %0, %2 ]
  tail call void @_Z5kd_upi(i32 noundef %.07)
  %5 = sext i32 %.07 to i64
  %6 = getelementptr inbounds [200001 x %struct.Node], ptr @tree, i64 0, i64 %5
  %7 = load i32, ptr %6, align 4, !tbaa !10
  %.not = icmp eq i32 %7, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph, %2
  ret void
}

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 = { 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 36}
!6 = !{!"_ZTS4Node", !7, i64 0, !7, i64 4, !7, i64 8, !8, i64 12, !8, i64 20, !8, i64 28, !7, i64 36, !7, i64 40, !7, i64 44, !7, i64 48}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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