; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/Croc Champ 2013 Round 1/Problem E/E.ll (Z5shiftiii)

; 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"

@lazy = external dso_local global [262144 x i32], align 16
@pass = external dso_local global [262144 x i8], align 16

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3updiiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5shiftiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [262144 x i8], ptr @pass, i64 0, i64 %9
  %11 = load i8, ptr %10, align 1, !tbaa !9, !range !11, !noundef !12
  %12 = trunc i8 %11 to i1
  br i1 %12, label %14, label %13

13:                                               ; preds = %3
  br label %42

14:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %15 = load i32, ptr %5, align 4, !tbaa !5
  %16 = load i32, ptr %6, align 4, !tbaa !5
  %17 = add nsw i32 %15, %16
  %18 = sdiv i32 %17, 2
  store i32 %18, ptr %7, align 4, !tbaa !5
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %20 = mul nsw i32 %19, 2
  %21 = load i32, ptr %5, align 4, !tbaa !5
  %22 = load i32, ptr %7, align 4, !tbaa !5
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds [262144 x i32], ptr @lazy, i64 0, i64 %24
  %26 = load i32, ptr %25, align 4, !tbaa !5
  call void @_Z3updiiii(i32 noundef %20, i32 noundef %21, i32 noundef %22, i32 noundef %26)
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = mul nsw i32 %27, 2
  %29 = add nsw i32 %28, 1
  %30 = load i32, ptr %7, align 4, !tbaa !5
  %31 = load i32, ptr %6, align 4, !tbaa !5
  %32 = load i32, ptr %4, align 4, !tbaa !5
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds [262144 x i32], ptr @lazy, i64 0, i64 %33
  %35 = load i32, ptr %34, align 4, !tbaa !5
  call void @_Z3updiiii(i32 noundef %29, i32 noundef %30, i32 noundef %31, i32 noundef %35)
  %36 = load i32, ptr %4, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds [262144 x i32], ptr @lazy, i64 0, i64 %37
  store i32 0, ptr %38, align 4, !tbaa !5
  %39 = load i32, ptr %4, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds [262144 x i8], ptr @pass, i64 0, i64 %40
  store i8 0, ptr %41, align 1, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %42

42:                                               ; preds = %14, %13
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 #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 = !{i8 0, i8 2}
!12 = !{}


; 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"

@lazy = external dso_local local_unnamed_addr global [262144 x i32], align 16
@pass = external dso_local local_unnamed_addr global [262144 x i8], align 16

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z3updiiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5shiftiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = sext i32 %0 to i64
  %5 = getelementptr inbounds [262144 x i8], ptr @pass, i64 0, i64 %4
  %6 = load i8, ptr %5, align 1, !tbaa !5, !range !9, !noundef !10
  %7 = trunc nuw i8 %6 to i1
  br i1 %7, label %8, label %16

8:                                                ; preds = %3
  %9 = add nsw i32 %2, %1
  %10 = sdiv i32 %9, 2
  %11 = shl nsw i32 %0, 1
  %12 = getelementptr inbounds [262144 x i32], ptr @lazy, i64 0, i64 %4
  %13 = load i32, ptr %12, align 4, !tbaa !11
  tail call void @_Z3updiiii(i32 noundef %11, i32 noundef %1, i32 noundef %10, i32 noundef %13)
  %14 = or disjoint i32 %11, 1
  %15 = load i32, ptr %12, align 4, !tbaa !11
  tail call void @_Z3updiiii(i32 noundef %14, i32 noundef %10, i32 noundef %2, i32 noundef %15)
  store i32 0, ptr %12, align 4, !tbaa !11
  store i8 0, ptr %5, align 1, !tbaa !5
  br label %16

16:                                               ; preds = %3, %8
  ret void
}

attributes #0 = { mustprogress 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)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"bool", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{i8 0, i8 2}
!10 = !{}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}


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