; LLVM IR from DionysiosB/CodeForces :: 0600-0699/635A-Orchestra.ll (Z11countViolasSt6vectorISt4pairIiiESaIS1_EEiiii)

; 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"

%"struct.std::pair" = type { i32, i32 }

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z11countViolasSt6vectorISt4pairIiiESaIS1_EEiiii(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) #0 {
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i64, align 8
  %12 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i32 %1, ptr %7, align 4, !tbaa !9
  store i32 %2, ptr %8, align 4, !tbaa !9
  store i32 %3, ptr %9, align 4, !tbaa !9
  store i32 %4, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #2
  store i64 0, ptr %11, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #2
  store i32 0, ptr %12, align 4, !tbaa !9
  br label %13

13:                                               ; preds = %56, %5
  %14 = load i32, ptr %12, align 4, !tbaa !9
  %15 = sext i32 %14 to i64
  %16 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #2
  %17 = icmp ult i64 %15, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #2
  br label %59

19:                                               ; preds = %13
  %20 = load i32, ptr %7, align 4, !tbaa !9
  %21 = load i32, ptr %12, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %22) #2
  %24 = getelementptr inbounds %"struct.std::pair", ptr %23, i32 0, i32 0
  %25 = load i32, ptr %24, align 4, !tbaa !13
  %26 = icmp sle i32 %20, %25
  br i1 %26, label %27, label %51

27:                                               ; preds = %19
  %28 = load i32, ptr %12, align 4, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %29) #2
  %31 = getelementptr inbounds %"struct.std::pair", ptr %30, i32 0, i32 0
  %32 = load i32, ptr %31, align 4, !tbaa !13
  %33 = load i32, ptr %8, align 4, !tbaa !9
  %34 = icmp sle i32 %32, %33
  br i1 %34, label %35, label %51

35:                                               ; preds = %27
  %36 = load i32, ptr %9, align 4, !tbaa !9
  %37 = load i32, ptr %12, align 4, !tbaa !9
  %38 = sext i32 %37 to i64
  %39 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %38) #2
  %40 = getelementptr inbounds %"struct.std::pair", ptr %39, i32 0, i32 1
  %41 = load i32, ptr %40, align 4, !tbaa !15
  %42 = icmp sle i32 %36, %41
  br i1 %42, label %43, label %51

43:                                               ; preds = %35
  %44 = load i32, ptr %12, align 4, !tbaa !9
  %45 = sext i32 %44 to i64
  %46 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %45) #2
  %47 = getelementptr inbounds %"struct.std::pair", ptr %46, i32 0, i32 1
  %48 = load i32, ptr %47, align 4, !tbaa !15
  %49 = load i32, ptr %10, align 4, !tbaa !9
  %50 = icmp sle i32 %48, %49
  br label %51

51:                                               ; preds = %43, %35, %27, %19
  %52 = phi i1 [ false, %35 ], [ false, %27 ], [ false, %19 ], [ %50, %43 ]
  %53 = zext i1 %52 to i64
  %54 = load i64, ptr %11, align 8, !tbaa !11
  %55 = add nsw i64 %54, %53
  store i64 %55, ptr %11, align 8, !tbaa !11
  br label %56

56:                                               ; preds = %51
  %57 = load i32, ptr %12, align 4, !tbaa !9
  %58 = add nsw i32 %57, 1
  store i32 %58, ptr %12, align 4, !tbaa !9
  br label %13, !llvm.loop !16

59:                                               ; preds = %18
  %60 = load i64, ptr %11, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #2
  ret i64 %60
}

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!14, !10, i64 0}
!14 = !{!"_ZTSSt4pairIiiE", !10, i64 0, !10, i64 4}
!15 = !{!14, !10, i64 4}
!16 = distinct !{!16, !17}
!17 = !{!"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"

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z11countViolasSt6vectorISt4pairIiiESaIS1_EEiiii(ptr noundef nonnull %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) local_unnamed_addr #0 {
  %6 = tail call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #1
  %.not18 = icmp eq i64 %6, 0
  br i1 %.not18, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %21, %5
  %.012.lcssa = phi i64 [ 0, %5 ], [ %24, %21 ]
  ret i64 %.012.lcssa

.lr.ph:                                           ; preds = %5, %21
  %indvars.iv = phi i64 [ %indvars.iv.next, %21 ], [ 0, %5 ]
  %.01216 = phi i64 [ %24, %21 ], [ 0, %5 ]
  %7 = tail call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #1
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %.not = icmp slt i32 %8, %1
  br i1 %.not, label %21, label %9

9:                                                ; preds = %.lr.ph
  %10 = tail call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #1
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %.not14 = icmp sgt i32 %11, %2
  br i1 %.not14, label %21, label %12

12:                                               ; preds = %9
  %13 = tail call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #1
  %14 = getelementptr inbounds i8, ptr %13, i64 4
  %15 = load i32, ptr %14, align 4, !tbaa !10
  %.not15 = icmp slt i32 %15, %3
  br i1 %.not15, label %21, label %16

16:                                               ; preds = %12
  %17 = tail call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #1
  %18 = getelementptr inbounds i8, ptr %17, i64 4
  %19 = load i32, ptr %18, align 4, !tbaa !10
  %20 = icmp sle i32 %19, %4
  br label %21

21:                                               ; preds = %16, %12, %9, %.lr.ph
  %22 = phi i1 [ false, %12 ], [ false, %9 ], [ false, %.lr.ph ], [ %20, %16 ]
  %23 = zext i1 %22 to i64
  %24 = add nuw nsw i64 %.01216, %23
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %25 = tail call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #1
  %26 = icmp ugt i64 %25, %indvars.iv.next
  br i1 %26, label %.lr.ph, label %._crit_edge, !llvm.loop !11
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

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 = { 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, !7, i64 0}
!6 = !{!"_ZTSSt4pairIiiE", !7, i64 0, !7, i64 4}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 4}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass