; LLVM IR from VastoLorde95/Competitive-Programming :: SPOJ/Random/UCBINTA (sum)

; 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 [7 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca [1000 x [1000 x i32]], align 16
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 4000000, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %33, %0
  %11 = load i32, ptr %5, align 4, !tbaa !5
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = icmp slt i32 %11, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  store i32 2, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %36

15:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %29, %15
  %17 = load i32, ptr %7, align 4, !tbaa !5
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = icmp slt i32 %17, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %16
  store i32 5, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %32

21:                                               ; preds = %16
  %22 = load i32, ptr %5, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [1000 x [1000 x i32]], ptr %3, i64 0, i64 %23
  %25 = load i32, ptr %7, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds [1000 x i32], ptr %24, i64 0, i64 %26
  %28 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %27)
  br label %29

29:                                               ; preds = %21
  %30 = load i32, ptr %7, align 4, !tbaa !5
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %7, align 4, !tbaa !5
  br label %16, !llvm.loop !9

32:                                               ; preds = %20
  br label %33

33:                                               ; preds = %32
  %34 = load i32, ptr %5, align 4, !tbaa !5
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %5, align 4, !tbaa !5
  br label %10, !llvm.loop !11

36:                                               ; preds = %14
  %37 = load i32, ptr %2, align 4, !tbaa !5
  %38 = icmp eq i32 %37, 2
  br i1 %38, label %39, label %49

39:                                               ; preds = %36
  %40 = getelementptr inbounds [1000 x [1000 x i32]], ptr %3, i64 0, i64 0
  %41 = getelementptr inbounds [1000 x i32], ptr %40, i64 0, i64 1
  %42 = load i32, ptr %41, align 4, !tbaa !5
  %43 = sdiv i32 %42, 2
  %44 = getelementptr inbounds [1000 x [1000 x i32]], ptr %3, i64 0, i64 0
  %45 = getelementptr inbounds [1000 x i32], ptr %44, i64 0, i64 1
  %46 = load i32, ptr %45, align 4, !tbaa !5
  %47 = sdiv i32 %46, 2
  %48 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %43, i32 noundef %47)
  br label %83

49:                                               ; preds = %36
  %50 = getelementptr inbounds [1000 x [1000 x i32]], ptr %3, i64 0, i64 0
  %51 = getelementptr inbounds [1000 x i32], ptr %50, i64 0, i64 1
  %52 = load i32, ptr %51, align 4, !tbaa !5
  %53 = getelementptr inbounds [1000 x [1000 x i32]], ptr %3, i64 0, i64 0
  %54 = getelementptr inbounds [1000 x i32], ptr %53, i64 0, i64 2
  %55 = load i32, ptr %54, align 8, !tbaa !5
  %56 = add nsw i32 %52, %55
  %57 = getelementptr inbounds [1000 x [1000 x i32]], ptr %3, i64 0, i64 1
  %58 = getelementptr inbounds [1000 x i32], ptr %57, i64 0, i64 2
  %59 = load i32, ptr %58, align 8, !tbaa !5
  %60 = sub nsw i32 %56, %59
  %61 = sdiv i32 %60, 2
  store i32 %61, ptr %4, align 4, !tbaa !5
  %62 = load i32, ptr %4, align 4, !tbaa !5
  %63 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %62)
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 1, ptr %8, align 4, !tbaa !5
  br label %64

64:                                               ; preds = %78, %49
  %65 = load i32, ptr %8, align 4, !tbaa !5
  %66 = load i32, ptr %2, align 4, !tbaa !5
  %67 = icmp slt i32 %65, %66
  br i1 %67, label %69, label %68

68:                                               ; preds = %64
  store i32 8, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %81

69:                                               ; preds = %64
  %70 = load i32, ptr %8, align 4, !tbaa !5
  %71 = sext i32 %70 to i64
  %72 = getelementptr inbounds [1000 x [1000 x i32]], ptr %3, i64 0, i64 %71
  %73 = getelementptr inbounds [1000 x i32], ptr %72, i64 0, i64 0
  %74 = load i32, ptr %73, align 16, !tbaa !5
  %75 = load i32, ptr %4, align 4, !tbaa !5
  %76 = sub nsw i32 %74, %75
  %77 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %76)
  br label %78

78:                                               ; preds = %69
  %79 = load i32, ptr %8, align 4, !tbaa !5
  %80 = add nsw i32 %79, 1
  store i32 %80, ptr %8, align 4, !tbaa !5
  br label %64, !llvm.loop !12

81:                                               ; preds = %68
  %82 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %83

83:                                               ; preds = %81, %39
  store i32 0, ptr %1, align 4
  store i32 1, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4000000, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  %84 = load i32, ptr %1, align 4
  ret i32 %84
}

; 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


; 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 [7 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca [1000 x [1000 x i32]], align 16
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  call void @llvm.lifetime.start.p0(i64 4000000, ptr nonnull %2) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %.pr = load i32, ptr %1, align 4, !tbaa !5
  %4 = icmp sgt i32 %.pr, 0
  br i1 %4, label %.preheader, label %._crit_edge18.thread

.preheader:                                       ; preds = %0, %._crit_edge
  %5 = phi i32 [ %8, %._crit_edge ], [ %.pr, %0 ]
  %indvars.iv27 = phi i64 [ %indvars.iv.next28, %._crit_edge ], [ 0, %0 ]
  %6 = icmp sgt i32 %5, 0
  br i1 %6, label %.lr.ph, label %.preheader.._crit_edge_crit_edge

.preheader.._crit_edge_crit_edge:                 ; preds = %.preheader
  %.pre = sext i32 %5 to i64
  br label %._crit_edge

._crit_edge18:                                    ; preds = %._crit_edge
  %7 = icmp eq i32 %8, 2
  br i1 %7, label %15, label %._crit_edge18.thread

._crit_edge:                                      ; preds = %.lr.ph, %.preheader.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.preheader.._crit_edge_crit_edge ], [ %13, %.lr.ph ]
  %8 = phi i32 [ %5, %.preheader.._crit_edge_crit_edge ], [ %12, %.lr.ph ]
  %indvars.iv.next28 = add nuw nsw i64 %indvars.iv27, 1
  %9 = icmp slt i64 %indvars.iv.next28, %.pre-phi
  br i1 %9, label %.preheader, label %._crit_edge18, !llvm.loop !9

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %.preheader ]
  %10 = getelementptr inbounds [1000 x [1000 x i32]], ptr %2, i64 0, i64 %indvars.iv27, i64 %indvars.iv
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %10)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %12 = load i32, ptr %1, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = icmp slt i64 %indvars.iv.next, %13
  br i1 %14, label %.lr.ph, label %._crit_edge, !llvm.loop !12

15:                                               ; preds = %._crit_edge18
  %16 = getelementptr inbounds i8, ptr %2, i64 4
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %18 = sdiv i32 %17, 2
  %19 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %18, i32 noundef %18)
  br label %40

._crit_edge18.thread:                             ; preds = %0, %._crit_edge18
  %20 = getelementptr inbounds i8, ptr %2, i64 4
  %21 = load i32, ptr %20, align 4, !tbaa !5
  %22 = getelementptr inbounds i8, ptr %2, i64 8
  %23 = load i32, ptr %22, align 8, !tbaa !5
  %24 = add nsw i32 %23, %21
  %25 = getelementptr inbounds i8, ptr %2, i64 4008
  %26 = load i32, ptr %25, align 8, !tbaa !5
  %27 = sub i32 %24, %26
  %28 = sdiv i32 %27, 2
  %29 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %28)
  %30 = load i32, ptr %1, align 4, !tbaa !5
  %31 = icmp sgt i32 %30, 1
  br i1 %31, label %.lr.ph22, label %._crit_edge23

._crit_edge23:                                    ; preds = %.lr.ph22, %._crit_edge18.thread
  %32 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  br label %40

.lr.ph22:                                         ; preds = %._crit_edge18.thread, %.lr.ph22
  %indvars.iv30 = phi i64 [ %indvars.iv.next31, %.lr.ph22 ], [ 1, %._crit_edge18.thread ]
  %33 = getelementptr inbounds [1000 x [1000 x i32]], ptr %2, i64 0, i64 %indvars.iv30
  %34 = load i32, ptr %33, align 16, !tbaa !5
  %35 = sub nsw i32 %34, %28
  %36 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %35)
  %indvars.iv.next31 = add nuw nsw i64 %indvars.iv30, 1
  %37 = load i32, ptr %1, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = icmp slt i64 %indvars.iv.next31, %38
  br i1 %39, label %.lr.ph22, label %._crit_edge23, !llvm.loop !13

40:                                               ; preds = %._crit_edge23, %15
  call void @llvm.lifetime.end.p0(i64 4000000, ptr nonnull %2) #3
  call void @llvm.lifetime.end.p0(i64 4, 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10, !11}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.unswitch.partial.disable"}
!12 = distinct !{!12, !10}
!13 = distinct !{!13, !10}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SCCPPass,SROAPass,SimpleLoopUnswitchPass,SimplifyCFGPass