; LLVM IR from Mohammed-Shoaib/Coding-Problems :: Codeforces/Solutions/1080C.ll (Z1Biiii)

; 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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_Z1Riiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z1Biiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #0 {
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i8, align 1
  %10 = alloca i64, align 8
  store i32 %0, ptr %5, align 4, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !5
  store i32 %3, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %9) #2
  store i8 0, ptr %9, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  %11 = load i32, ptr %5, align 4, !tbaa !5
  %12 = load i32, ptr %6, align 4, !tbaa !5
  %13 = load i32, ptr %7, align 4, !tbaa !5
  %14 = load i32, ptr %8, align 4, !tbaa !5
  %15 = call noundef i64 @_Z1Riiii(i32 noundef %11, i32 noundef %12, i32 noundef %13, i32 noundef %14)
  store i64 %15, ptr %10, align 8, !tbaa !11
  %16 = load i32, ptr %5, align 4, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !5
  %18 = xor i32 %16, %17
  %19 = and i32 %18, 1
  %20 = icmp ne i32 %19, 0
  br i1 %20, label %21, label %22

21:                                               ; preds = %4
  store i8 1, ptr %9, align 1, !tbaa !9
  br label %22

22:                                               ; preds = %21, %4
  %23 = load i8, ptr %9, align 1, !tbaa !9, !range !13, !noundef !14
  %24 = trunc i8 %23 to i1
  br i1 %24, label %25, label %29

25:                                               ; preds = %22
  %26 = load i64, ptr %10, align 8, !tbaa !11
  %27 = add nsw i64 %26, 1
  %28 = sdiv i64 %27, 2
  br label %32

29:                                               ; preds = %22
  %30 = load i64, ptr %10, align 8, !tbaa !11
  %31 = sdiv i64 %30, 2
  br label %32

32:                                               ; preds = %29, %25
  %33 = phi i64 [ %28, %25 ], [ %31, %29 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 1, ptr %9) #2
  ret i64 %33
}

; 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 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long long", !7, i64 0}
!13 = !{i8 0, i8 2}
!14 = !{}


; 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
declare dso_local noundef i64 @_Z1Riiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef range(i64 -4611686018427387904, 4611686018427387904) i64 @_Z1Biiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = tail call noundef i64 @_Z1Riiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3)
  %6 = xor i32 %1, %0
  %7 = and i32 %6, 1
  %8 = zext nneg i32 %7 to i64
  %.in = add i64 %5, %8
  %9 = sdiv i64 %.in, 2
  ret i64 %9
}

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)"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass