; LLVM IR from afrozchakure/Competitive-Programming-Solutions :: HackerRank/C (DigitFrequency)

; 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"

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i8, align 1
  %3 = alloca [10 x i32], align 16
  %4 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 1, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 40, ptr %3) #4
  call void @llvm.memset.p0.i64(ptr align 16 %3, i8 0, i64 40, i1 false)
  br label %5

5:                                                ; preds = %24, %0
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  %7 = icmp eq i32 %6, 1
  br i1 %7, label %8, label %25

8:                                                ; preds = %5
  %9 = load i8, ptr %2, align 1, !tbaa !5
  %10 = sext i8 %9 to i32
  %11 = icmp sge i32 %10, 48
  br i1 %11, label %12, label %24

12:                                               ; preds = %8
  %13 = load i8, ptr %2, align 1, !tbaa !5
  %14 = sext i8 %13 to i32
  %15 = icmp sle i32 %14, 57
  br i1 %15, label %16, label %24

16:                                               ; preds = %12
  %17 = load i8, ptr %2, align 1, !tbaa !5
  %18 = sext i8 %17 to i32
  %19 = sub nsw i32 %18, 48
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [10 x i32], ptr %3, i64 0, i64 %20
  %22 = load i32, ptr %21, align 4, !tbaa !8
  %23 = add nsw i32 %22, 1
  store i32 %23, ptr %21, align 4, !tbaa !8
  br label %24

24:                                               ; preds = %16, %12, %8
  br label %5, !llvm.loop !10

25:                                               ; preds = %5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  store i32 0, ptr %4, align 4, !tbaa !8
  br label %26

26:                                               ; preds = %36, %25
  %27 = load i32, ptr %4, align 4, !tbaa !8
  %28 = icmp slt i32 %27, 10
  br i1 %28, label %30, label %29

29:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  br label %39

30:                                               ; preds = %26
  %31 = load i32, ptr %4, align 4, !tbaa !8
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [10 x i32], ptr %3, i64 0, i64 %32
  %34 = load i32, ptr %33, align 4, !tbaa !8
  %35 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %34)
  br label %36

36:                                               ; preds = %30
  %37 = load i32, ptr %4, align 4, !tbaa !8
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %4, align 4, !tbaa !8
  br label %26, !llvm.loop !12

39:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 40, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %2) #4
  ret i32 0
}

; 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 nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

declare i32 @__isoc99_scanf(ptr noundef, ...) #3

declare i32 @printf(ptr noundef, ...) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { "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 #4 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !6, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = distinct !{!12, !11}


; 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"

@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i8, align 1
  %2 = alloca [10 x i32], align 16
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %2) #4
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(40) %2, i8 0, i64 40, i1 false)
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %4 = icmp eq i32 %3, 1
  br i1 %4, label %.lr.ph, label %.preheader

.preheader.loopexit:                              ; preds = %33
  %.pre = load i32, ptr %2, align 16, !tbaa !5
  %.phi.trans.insert = getelementptr inbounds i8, ptr %2, i64 4
  %.pre8 = load i32, ptr %.phi.trans.insert, align 4, !tbaa !5
  %.phi.trans.insert9 = getelementptr inbounds i8, ptr %2, i64 8
  %.pre10 = load i32, ptr %.phi.trans.insert9, align 8, !tbaa !5
  %.phi.trans.insert11 = getelementptr inbounds i8, ptr %2, i64 12
  %.pre12 = load i32, ptr %.phi.trans.insert11, align 4, !tbaa !5
  %.phi.trans.insert13 = getelementptr inbounds i8, ptr %2, i64 16
  %.pre14 = load i32, ptr %.phi.trans.insert13, align 16, !tbaa !5
  %.phi.trans.insert15 = getelementptr inbounds i8, ptr %2, i64 20
  %.pre16 = load i32, ptr %.phi.trans.insert15, align 4, !tbaa !5
  %.phi.trans.insert17 = getelementptr inbounds i8, ptr %2, i64 24
  %.pre18 = load i32, ptr %.phi.trans.insert17, align 8, !tbaa !5
  %.phi.trans.insert19 = getelementptr inbounds i8, ptr %2, i64 28
  %.pre20 = load i32, ptr %.phi.trans.insert19, align 4, !tbaa !5
  %.phi.trans.insert21 = getelementptr inbounds i8, ptr %2, i64 32
  %.pre22 = load i32, ptr %.phi.trans.insert21, align 16, !tbaa !5
  %.phi.trans.insert23 = getelementptr inbounds i8, ptr %2, i64 36
  %.pre24 = load i32, ptr %.phi.trans.insert23, align 4, !tbaa !5
  br label %.preheader

.preheader:                                       ; preds = %.preheader.loopexit, %0
  %5 = phi i32 [ %.pre24, %.preheader.loopexit ], [ 0, %0 ]
  %6 = phi i32 [ %.pre22, %.preheader.loopexit ], [ 0, %0 ]
  %7 = phi i32 [ %.pre20, %.preheader.loopexit ], [ 0, %0 ]
  %8 = phi i32 [ %.pre18, %.preheader.loopexit ], [ 0, %0 ]
  %9 = phi i32 [ %.pre16, %.preheader.loopexit ], [ 0, %0 ]
  %10 = phi i32 [ %.pre14, %.preheader.loopexit ], [ 0, %0 ]
  %11 = phi i32 [ %.pre12, %.preheader.loopexit ], [ 0, %0 ]
  %12 = phi i32 [ %.pre10, %.preheader.loopexit ], [ 0, %0 ]
  %13 = phi i32 [ %.pre8, %.preheader.loopexit ], [ 0, %0 ]
  %14 = phi i32 [ %.pre, %.preheader.loopexit ], [ 0, %0 ]
  %15 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %14)
  %16 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %13)
  %17 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %12)
  %18 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %11)
  %19 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %10)
  %20 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %9)
  %21 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %8)
  %22 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %7)
  %23 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %6)
  %24 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %5)
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %1) #4
  ret i32 0

.lr.ph:                                           ; preds = %0, %33
  %25 = load i8, ptr %1, align 1
  %26 = add i8 %25, -48
  %or.cond = icmp ult i8 %26, 10
  br i1 %or.cond, label %27, label %33

27:                                               ; preds = %.lr.ph
  %28 = and i8 %25, 15
  %29 = zext nneg i8 %28 to i64
  %30 = getelementptr inbounds [10 x i32], ptr %2, i64 0, i64 %29
  %31 = load i32, ptr %30, align 4, !tbaa !5
  %32 = add nsw i32 %31, 1
  store i32 %32, ptr %30, align 4, !tbaa !5
  br label %33

33:                                               ; preds = %27, %.lr.ph
  %34 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %35 = icmp eq i32 %34, 1
  br i1 %35, label %.lr.ph, label %.preheader.loopexit, !llvm.loop !9
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { nofree 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { nofree 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 #4 = { 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/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: BDCEPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass