; LLVM IR from tangjz/acm-icpc :: codeforces/gym/100540J.ll (Z3addii)

; 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
@mod = external dso_local global i32, align 4
@bit = external dso_local global [100001 x i32], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z3addii(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
  br label %5

5:                                                ; preds = %26, %2
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = load i32, ptr @n, align 4, !tbaa !5
  %8 = icmp sle i32 %6, %7
  br i1 %8, label %9, label %33

9:                                                ; preds = %5
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = load i32, ptr %3, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [100001 x i32], ptr @bit, i64 0, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = add nsw i32 %14, %10
  store i32 %15, ptr %13, align 4, !tbaa !5
  %16 = load i32, ptr @mod, align 4, !tbaa !5
  %17 = icmp sge i32 %15, %16
  br i1 %17, label %18, label %25

18:                                               ; preds = %9
  %19 = load i32, ptr @mod, align 4, !tbaa !5
  %20 = load i32, ptr %3, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [100001 x i32], ptr @bit, i64 0, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = sub nsw i32 %23, %19
  store i32 %24, ptr %22, align 4, !tbaa !5
  br label %25

25:                                               ; preds = %18, %9
  br label %26

26:                                               ; preds = %25
  %27 = load i32, ptr %3, align 4, !tbaa !5
  %28 = load i32, ptr %3, align 4, !tbaa !5
  %29 = sub nsw i32 0, %28
  %30 = and i32 %27, %29
  %31 = load i32, ptr %3, align 4, !tbaa !5
  %32 = add nsw i32 %31, %30
  store i32 %32, ptr %3, align 4, !tbaa !5
  br label %5, !llvm.loop !9

33:                                               ; preds = %5
  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" }

!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
@mod = external dso_local local_unnamed_addr global i32, align 4
@bit = external dso_local local_unnamed_addr global [100001 x i32], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind memory(readwrite, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @_Z3addii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = load i32, ptr @n, align 4, !tbaa !5
  %.not10 = icmp slt i32 %3, %0
  br i1 %.not10, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %4 = load i32, ptr @mod, align 4, !tbaa !5
  br label %5

5:                                                ; preds = %.lr.ph, %5
  %.011 = phi i32 [ %0, %.lr.ph ], [ %13, %5 ]
  %6 = sext i32 %.011 to i64
  %7 = getelementptr inbounds [100001 x i32], ptr @bit, i64 0, i64 %6
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = add nsw i32 %8, %1
  %.not9 = icmp slt i32 %9, %4
  %10 = select i1 %.not9, i32 0, i32 %4
  %spec.select = sub nsw i32 %9, %10
  store i32 %spec.select, ptr %7, align 4, !tbaa !5
  %11 = sub nsw i32 0, %.011
  %12 = and i32 %.011, %11
  %13 = add nsw i32 %12, %.011
  %.not = icmp sgt i32 %13, %3
  br i1 %.not, label %._crit_edge, label %5, !llvm.loop !9

._crit_edge:                                      ; preds = %5, %2
  ret void
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(readwrite, argmem: none, inaccessiblemem: none) 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,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass