; LLVM IR from devparthgarg/Data-Structures-and-Algorithms :: 21. Dynamic Programming/06 Maximum Sum with no 2 Consecutive/06b Maximum Sum with n_e4d7e36d (Z6maxSumRSt6vectorIiSaIiEEiPi)

; 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 uwtable
define dso_local noundef i32 @_Z6maxSumRSt6vectorIiSaIiEEiPi(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1, ptr noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !5
  %10 = load ptr, ptr %7, align 8, !tbaa !5
  %11 = load i32, ptr %6, align 4, !tbaa !9
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds i32, ptr %10, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !9
  %15 = icmp eq i32 %14, -1
  br i1 %15, label %16, label %57

16:                                               ; preds = %3
  %17 = load i32, ptr %6, align 4, !tbaa !9
  %18 = icmp eq i32 %17, 1
  br i1 %18, label %19, label %23

19:                                               ; preds = %16
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %20, i64 noundef 0) #4
  %22 = load i32, ptr %21, align 4, !tbaa !9
  store i32 %22, ptr %4, align 4
  br label %63

23:                                               ; preds = %16
  %24 = load i32, ptr %6, align 4, !tbaa !9
  %25 = icmp eq i32 %24, 2
  br i1 %25, label %26, label %33

26:                                               ; preds = %23
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %27, i64 noundef 0) #4
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %29, i64 noundef 1) #4
  %31 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %28, ptr noundef nonnull align 4 dereferenceable(4) %30)
  %32 = load i32, ptr %31, align 4, !tbaa !9
  store i32 %32, ptr %4, align 4
  br label %63

33:                                               ; preds = %23
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  %34 = load ptr, ptr %5, align 8, !tbaa !5
  %35 = load i32, ptr %6, align 4, !tbaa !9
  %36 = sub nsw i32 %35, 1
  %37 = load ptr, ptr %7, align 8, !tbaa !5
  %38 = call noundef i32 @_Z6maxSumRSt6vectorIiSaIiEEiPi(ptr noundef nonnull align 8 dereferenceable(24) %34, i32 noundef %36, ptr noundef %37)
  store i32 %38, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %39 = load ptr, ptr %5, align 8, !tbaa !5
  %40 = load i32, ptr %6, align 4, !tbaa !9
  %41 = sub nsw i32 %40, 2
  %42 = load ptr, ptr %7, align 8, !tbaa !5
  %43 = call noundef i32 @_Z6maxSumRSt6vectorIiSaIiEEiPi(ptr noundef nonnull align 8 dereferenceable(24) %39, i32 noundef %41, ptr noundef %42)
  %44 = load ptr, ptr %5, align 8, !tbaa !5
  %45 = load i32, ptr %6, align 4, !tbaa !9
  %46 = sub nsw i32 %45, 1
  %47 = sext i32 %46 to i64
  %48 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %44, i64 noundef %47) #4
  %49 = load i32, ptr %48, align 4, !tbaa !9
  %50 = add nsw i32 %43, %49
  store i32 %50, ptr %9, align 4, !tbaa !9
  %51 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %8, ptr noundef nonnull align 4 dereferenceable(4) %9)
  %52 = load i32, ptr %51, align 4, !tbaa !9
  %53 = load ptr, ptr %7, align 8, !tbaa !5
  %54 = load i32, ptr %6, align 4, !tbaa !9
  %55 = sext i32 %54 to i64
  %56 = getelementptr inbounds i32, ptr %53, i64 %55
  store i32 %52, ptr %56, align 4, !tbaa !9
  store i32 %52, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %63

57:                                               ; preds = %3
  %58 = load ptr, ptr %7, align 8, !tbaa !5
  %59 = load i32, ptr %6, align 4, !tbaa !9
  %60 = sext i32 %59 to i64
  %61 = getelementptr inbounds i32, ptr %58, i64 %60
  %62 = load i32, ptr %61, align 4, !tbaa !9
  store i32 %62, ptr %4, align 4
  br label %63

63:                                               ; preds = %57, %33, %26, %19
  %64 = load i32, ptr %4, align 4
  ret i32 %64
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

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" }
attributes #1 = { 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 #2 = { inlinehint 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 #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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}


; 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 i32 @_Z6maxSumRSt6vectorIiSaIiEEiPi(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = sext i32 %1 to i64
  %7 = getelementptr inbounds i32, ptr %2, i64 %6
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = icmp eq i32 %8, -1
  br i1 %9, label %10, label %common.ret21

10:                                               ; preds = %3
  switch i32 %1, label %19 [
    i32 1, label %11
    i32 2, label %14
  ]

11:                                               ; preds = %10
  %12 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 0) #3
  %13 = load i32, ptr %12, align 4, !tbaa !5
  br label %common.ret21

14:                                               ; preds = %10
  %15 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 0) #3
  %16 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 1) #3
  %17 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %15, ptr noundef nonnull align 4 dereferenceable(4) %16)
  %18 = load i32, ptr %17, align 4, !tbaa !5
  br label %common.ret21

common.ret21:                                     ; preds = %3, %14, %11, %19
  %common.ret21.op = phi i32 [ %29, %19 ], [ %13, %11 ], [ %18, %14 ], [ %8, %3 ]
  ret i32 %common.ret21.op

19:                                               ; preds = %10
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #3
  %20 = add nsw i32 %1, -1
  %21 = tail call noundef i32 @_Z6maxSumRSt6vectorIiSaIiEEiPi(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %20, ptr noundef nonnull %2)
  store i32 %21, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #3
  %22 = add nsw i32 %1, -2
  %23 = tail call noundef i32 @_Z6maxSumRSt6vectorIiSaIiEEiPi(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %22, ptr noundef nonnull %2)
  %24 = sext i32 %20 to i64
  %25 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %24) #3
  %26 = load i32, ptr %25, align 4, !tbaa !5
  %27 = add nsw i32 %26, %23
  store i32 %27, ptr %5, align 4, !tbaa !5
  %28 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %5)
  %29 = load i32, ptr %28, align 4, !tbaa !5
  store i32 %29, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #3
  br label %common.ret21
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { inlinehint 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 #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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"}


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