; LLVM IR from DionysiosB/CodeForces :: 1788B-SumOfTwoNumbers (main)

; 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 [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [9 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i8, align 1
  %8 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  br label %10

10:                                               ; preds = %58, %0
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = add nsw i64 %11, -1
  store i64 %12, ptr %2, align 8, !tbaa !5
  %13 = icmp ne i64 %11, 0
  br i1 %13, label %14, label %62

14:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3)
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 0, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 0, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 1, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #3
  store i8 0, ptr %7, align 1, !tbaa !11
  br label %16

16:                                               ; preds = %34, %14
  %17 = load i64, ptr %3, align 8, !tbaa !9
  %18 = icmp ne i64 %17, 0
  br i1 %18, label %19, label %58

19:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %20 = load i64, ptr %3, align 8, !tbaa !9
  %21 = srem i64 %20, 10
  store i64 %21, ptr %8, align 8, !tbaa !9
  %22 = load i64, ptr %3, align 8, !tbaa !9
  %23 = sdiv i64 %22, 10
  store i64 %23, ptr %3, align 8, !tbaa !9
  %24 = load i64, ptr %8, align 8, !tbaa !9
  %25 = srem i64 %24, 2
  %26 = icmp ne i64 %25, 0
  br i1 %26, label %27, label %34

27:                                               ; preds = %19
  %28 = load i8, ptr %7, align 1, !tbaa !11, !range !13, !noundef !14
  %29 = trunc i8 %28 to i1
  %30 = zext i1 %29 to i32
  %31 = sub nsw i32 1, %30
  %32 = icmp ne i32 %31, 0
  %33 = zext i1 %32 to i8
  store i8 %33, ptr %7, align 1, !tbaa !11
  br label %34

34:                                               ; preds = %27, %19
  %35 = load i64, ptr %6, align 8, !tbaa !9
  %36 = load i64, ptr %8, align 8, !tbaa !9
  %37 = load i8, ptr %7, align 1, !tbaa !11, !range !13, !noundef !14
  %38 = trunc i8 %37 to i1
  %39 = zext i1 %38 to i64
  %40 = add nsw i64 %36, %39
  %41 = sdiv i64 %40, 2
  %42 = mul nsw i64 %35, %41
  %43 = load i64, ptr %4, align 8, !tbaa !9
  %44 = add nsw i64 %43, %42
  store i64 %44, ptr %4, align 8, !tbaa !9
  %45 = load i64, ptr %6, align 8, !tbaa !9
  %46 = load i64, ptr %8, align 8, !tbaa !9
  %47 = add nsw i64 %46, 1
  %48 = load i8, ptr %7, align 1, !tbaa !11, !range !13, !noundef !14
  %49 = trunc i8 %48 to i1
  %50 = zext i1 %49 to i64
  %51 = sub nsw i64 %47, %50
  %52 = sdiv i64 %51, 2
  %53 = mul nsw i64 %45, %52
  %54 = load i64, ptr %5, align 8, !tbaa !9
  %55 = add nsw i64 %54, %53
  store i64 %55, ptr %5, align 8, !tbaa !9
  %56 = load i64, ptr %6, align 8, !tbaa !9
  %57 = mul nsw i64 %56, 10
  store i64 %57, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %16, !llvm.loop !15

58:                                               ; preds = %16
  %59 = load i64, ptr %4, align 8, !tbaa !9
  %60 = load i64, ptr %5, align 8, !tbaa !9
  %61 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %59, i64 noundef %60)
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  br label %10, !llvm.loop !17

62:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  %63 = load i32, ptr %1, align 4
  ret i32 %63
}

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

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

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

declare i32 @printf(ptr noundef, ...) #2

attributes #0 = { mustprogress norecurse 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 = { "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 #3 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"bool", !7, i64 0}
!13 = !{i8 0, i8 2}
!14 = !{}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}
!17 = distinct !{!17, !16}


; 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 [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [9 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %4 = load i64, ptr %1, align 8, !tbaa !5
  %5 = add nsw i64 %4, -1
  store i64 %5, ptr %1, align 8, !tbaa !5
  %.not28 = icmp eq i64 %4, 0
  br i1 %.not28, label %._crit_edge31, label %.lr.ph30

.lr.ph30:                                         ; preds = %0, %22
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2)
  %.promoted = load i64, ptr %2, align 8, !tbaa !9
  %.not1822 = icmp eq i64 %.promoted, 0
  br i1 %.not1822, label %22, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph30, %.lr.ph
  %.026 = phi i64 [ %16, %.lr.ph ], [ 0, %.lr.ph30 ]
  %.01425 = phi i8 [ %.1, %.lr.ph ], [ 0, %.lr.ph30 ]
  %.01524 = phi i64 [ %21, %.lr.ph ], [ 1, %.lr.ph30 ]
  %.01623 = phi i64 [ %20, %.lr.ph ], [ 0, %.lr.ph30 ]
  %7 = phi i64 [ %9, %.lr.ph ], [ %.promoted, %.lr.ph30 ]
  %8 = srem i64 %7, 10
  %9 = sdiv i64 %7, 10
  %10 = trunc nsw i64 %8 to i8
  %11 = and i8 %10, 1
  %.1 = xor i8 %.01425, %11
  %12 = and i8 %.1, 1
  %13 = trunc nsw i64 %8 to i8
  %.lhs.trunc = add nsw i8 %12, %13
  %14 = sdiv i8 %.lhs.trunc, 2
  %.sext = sext i8 %14 to i64
  %15 = mul nsw i64 %.01524, %.sext
  %16 = add nsw i64 %15, %.026
  %17 = add nsw i8 %13, 1
  %.lhs.trunc20 = sub nsw i8 %17, %12
  %18 = sdiv i8 %.lhs.trunc20, 2
  %.sext21 = sext i8 %18 to i64
  %19 = mul nsw i64 %.01524, %.sext21
  %20 = add nsw i64 %19, %.01623
  %21 = mul nuw nsw i64 %.01524, 10
  %.off = add i64 %7, 9
  %.not18 = icmp ult i64 %.off, 19
  br i1 %.not18, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph
  store i64 %9, ptr %2, align 8, !tbaa !9
  br label %22

22:                                               ; preds = %._crit_edge, %.lr.ph30
  %.016.lcssa = phi i64 [ %20, %._crit_edge ], [ 0, %.lr.ph30 ]
  %.0.lcssa = phi i64 [ %16, %._crit_edge ], [ 0, %.lr.ph30 ]
  %23 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %.0.lcssa, i64 noundef %.016.lcssa)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  %24 = load i64, ptr %1, align 8, !tbaa !5
  %25 = add nsw i64 %24, -1
  store i64 %25, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %24, 0
  br i1 %.not, label %._crit_edge31, label %.lr.ph30, !llvm.loop !13

._crit_edge31:                                    ; preds = %22, %0
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #3
  ret i32 0
}

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

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

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

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

attributes #0 = { mustprogress nofree norecurse 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 = { 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 #3 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; Effective O3 passes: BDCEPass,CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass