; LLVM IR from andreimaximov/algorithms :: codeforces/cards-sorting/main.ll (Z6updateii)

; 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"

@N = external dso_local global i32, align 4
@T = external dso_local global [100010 x i32], align 16
@.str = external hidden unnamed_addr constant [16 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [92 x i8], align 1
@__PRETTY_FUNCTION__._Z6updateii = external hidden unnamed_addr constant [22 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z6updateii(i32 noundef %0, i32 noundef %1) #0 {
  %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
  %6 = icmp sge i32 %5, 0
  br i1 %6, label %7, label %11

7:                                                ; preds = %2
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %9 = load i32, ptr @N, align 4, !tbaa !5
  %10 = icmp slt i32 %8, %9
  br label %11

11:                                               ; preds = %7, %2
  %12 = phi i1 [ false, %2 ], [ %10, %7 ]
  br i1 %12, label %13, label %14

13:                                               ; preds = %11
  br label %16

14:                                               ; preds = %11
  call void @__assert_fail(ptr noundef @.str, ptr noundef @.str.1, i32 noundef 20, ptr noundef @__PRETTY_FUNCTION__._Z6updateii) #2
  unreachable

15:                                               ; No predecessors!
  br label %16

16:                                               ; preds = %15, %13
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %3, align 4, !tbaa !5
  br label %19

19:                                               ; preds = %23, %16
  %20 = load i32, ptr %3, align 4, !tbaa !5
  %21 = load i32, ptr @N, align 4, !tbaa !5
  %22 = icmp sle i32 %20, %21
  br i1 %22, label %23, label %36

23:                                               ; preds = %19
  %24 = load i32, ptr %4, align 4, !tbaa !5
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds [100010 x i32], ptr @T, i64 0, i64 %26
  %28 = load i32, ptr %27, align 4, !tbaa !5
  %29 = add nsw i32 %28, %24
  store i32 %29, ptr %27, align 4, !tbaa !5
  %30 = load i32, ptr %3, align 4, !tbaa !5
  %31 = load i32, ptr %3, align 4, !tbaa !5
  %32 = sub nsw i32 0, %31
  %33 = and i32 %30, %32
  %34 = load i32, ptr %3, align 4, !tbaa !5
  %35 = add nsw i32 %34, %33
  store i32 %35, ptr %3, align 4, !tbaa !5
  br label %19, !llvm.loop !9

36:                                               ; preds = %19
  ret void
}

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #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 = { noreturn nounwind "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 = { noreturn 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"

@N = external dso_local local_unnamed_addr global i32, align 4
@T = external dso_local local_unnamed_addr global [100010 x i32], align 16
@.str = external hidden unnamed_addr constant [16 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [92 x i8], align 1
@__PRETTY_FUNCTION__._Z6updateii = external hidden unnamed_addr constant [22 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z6updateii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %0, -1
  %4 = load i32, ptr @N, align 4
  %5 = icmp sgt i32 %4, %0
  %6 = select i1 %3, i1 %5, i1 false
  br i1 %6, label %.lr.ph.preheader, label %7

7:                                                ; preds = %2
  tail call void @__assert_fail(ptr noundef nonnull @.str, ptr noundef nonnull @.str.1, i32 noundef 20, ptr noundef nonnull @__PRETTY_FUNCTION__._Z6updateii) #2
  unreachable

.lr.ph.preheader:                                 ; preds = %2
  %8 = add nuw nsw i32 %0, 1
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %.011 = phi i32 [ %15, %.lr.ph ], [ %8, %.lr.ph.preheader ]
  %9 = zext nneg i32 %.011 to i64
  %10 = getelementptr inbounds [100010 x i32], ptr @T, i64 0, i64 %9
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %12 = add nsw i32 %11, %1
  store i32 %12, ptr %10, align 4, !tbaa !5
  %13 = sub nsw i32 0, %.011
  %14 = and i32 %.011, %13
  %15 = add nuw nsw i32 %14, %.011
  %.not = icmp sgt i32 %15, %4
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

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

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #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 = { noreturn nounwind "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 = { noreturn 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"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass