; LLVM IR from tangjz/acm-icpc :: lydsy/1576.ll (Z6updateiii)

; 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"

@dis = external dso_local global [100001 x i32], align 16
@dep = external dso_local global [100001 x i32], align 16
@fa = external dso_local global [100001 x [17 x i32]], align 16
@nxt = external dso_local global [100001 x i32], align 16
@ans = external dso_local global [100001 x i32], align 16

; 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 uwtable
declare dso_local noundef i32 @_Z4findi(i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6updateiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = call noundef i32 @_Z4findi(i32 noundef %8)
  store i32 %9, ptr %7, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %39, %3
  %11 = load i32, ptr %7, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [100001 x i32], ptr @dep, i64 0, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = load i32, ptr %5, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [100001 x i32], ptr @dep, i64 0, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = icmp sgt i32 %14, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %42

21:                                               ; preds = %10
  %22 = load i32, ptr %6, align 4, !tbaa !5
  %23 = load i32, ptr %7, align 4, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds [100001 x i32], ptr @dis, i64 0, i64 %24
  %26 = load i32, ptr %25, align 4, !tbaa !5
  %27 = sub nsw i32 %22, %26
  %28 = load i32, ptr %7, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [100001 x i32], ptr @ans, i64 0, i64 %29
  store i32 %27, ptr %30, align 4, !tbaa !5
  %31 = load i32, ptr %7, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [100001 x [17 x i32]], ptr @fa, i64 0, i64 %32
  %34 = getelementptr inbounds [17 x i32], ptr %33, i64 0, i64 0
  %35 = load i32, ptr %34, align 4, !tbaa !5
  %36 = load i32, ptr %7, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds [100001 x i32], ptr @nxt, i64 0, i64 %37
  store i32 %35, ptr %38, align 4, !tbaa !5
  br label %39

39:                                               ; preds = %21
  %40 = load i32, ptr %7, align 4, !tbaa !5
  %41 = call noundef i32 @_Z4findi(i32 noundef %40)
  store i32 %41, ptr %7, align 4, !tbaa !5
  br label %10, !llvm.loop !9

42:                                               ; preds = %20
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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" }
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 = distinct !{!9, !10}
!10 = !{!"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"

@dis = external dso_local local_unnamed_addr global [100001 x i32], align 16
@dep = external dso_local local_unnamed_addr global [100001 x i32], align 16
@fa = external dso_local local_unnamed_addr global [100001 x [17 x i32]], align 16
@nxt = external dso_local local_unnamed_addr global [100001 x i32], align 16
@ans = external dso_local local_unnamed_addr global [100001 x i32], align 16

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z4findi(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6updateiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = tail call noundef i32 @_Z4findi(i32 noundef %0)
  %5 = sext i32 %1 to i64
  %6 = getelementptr inbounds [100001 x i32], ptr @dep, i64 0, i64 %5
  %7 = sext i32 %4 to i64
  %8 = getelementptr inbounds [100001 x i32], ptr @dep, i64 0, i64 %7
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %10 = load i32, ptr %6, align 4, !tbaa !5
  %11 = icmp sgt i32 %9, %10
  br i1 %11, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %3
  ret void

.lr.ph:                                           ; preds = %3, %.lr.ph
  %12 = phi i64 [ %21, %.lr.ph ], [ %7, %3 ]
  %.09 = phi i32 [ %20, %.lr.ph ], [ %4, %3 ]
  %13 = getelementptr inbounds [100001 x i32], ptr @dis, i64 0, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = sub nsw i32 %2, %14
  %16 = getelementptr inbounds [100001 x i32], ptr @ans, i64 0, i64 %12
  store i32 %15, ptr %16, align 4, !tbaa !5
  %17 = getelementptr inbounds [100001 x [17 x i32]], ptr @fa, i64 0, i64 %12
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = getelementptr inbounds [100001 x i32], ptr @nxt, i64 0, i64 %12
  store i32 %18, ptr %19, align 4, !tbaa !5
  %20 = tail call noundef i32 @_Z4findi(i32 noundef %.09)
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [100001 x i32], ptr @dep, i64 0, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = icmp sgt i32 %23, %24
  br i1 %25, label %.lr.ph, label %._crit_edge, !llvm.loop !9
}

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 = !{!"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,GlobalOptPass,InferFunctionAttrsPass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass