; LLVM IR from ahr9n/psolving-paradigms :: 4.dynamic-programming/04.knapsack/CodeForces 35D - Animals.ll (Z2dpii)

; 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"

@n = external dso_local global i32, align 4
@ton = external dso_local global [101 x i32], align 16
@mem = external dso_local global [101 x [30401 x i32]], align 16

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z2dpii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  %10 = load i32, ptr %5, align 4, !tbaa !5
  %11 = icmp slt i32 %10, 0
  br i1 %11, label %12, label %13

12:                                               ; preds = %2
  store i32 -10000000, ptr %3, align 4
  br label %55

13:                                               ; preds = %2
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = load i32, ptr @n, align 4, !tbaa !5
  %16 = icmp eq i32 %14, %15
  br i1 %16, label %17, label %18

17:                                               ; preds = %13
  store i32 0, ptr %3, align 4
  br label %55

18:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [101 x [30401 x i32]], ptr @mem, i64 0, i64 %20
  %22 = load i32, ptr %5, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [30401 x i32], ptr %21, i64 0, i64 %23
  store ptr %24, ptr %6, align 8, !tbaa !9
  %25 = load ptr, ptr %6, align 8, !tbaa !9
  %26 = load i32, ptr %25, align 4, !tbaa !5
  %27 = xor i32 %26, -1
  %28 = icmp ne i32 %27, 0
  br i1 %28, label %29, label %32

29:                                               ; preds = %18
  %30 = load ptr, ptr %6, align 8, !tbaa !9
  %31 = load i32, ptr %30, align 4, !tbaa !5
  store i32 %31, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %54

32:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  %33 = load i32, ptr %4, align 4, !tbaa !5
  %34 = add nsw i32 %33, 1
  %35 = load i32, ptr %5, align 4, !tbaa !5
  %36 = call noundef i32 @_Z2dpii(i32 noundef %34, i32 noundef %35)
  store i32 %36, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %37 = load i32, ptr %4, align 4, !tbaa !5
  %38 = add nsw i32 %37, 1
  %39 = load i32, ptr %5, align 4, !tbaa !5
  %40 = load i32, ptr @n, align 4, !tbaa !5
  %41 = load i32, ptr %4, align 4, !tbaa !5
  %42 = sub nsw i32 %40, %41
  %43 = load i32, ptr %4, align 4, !tbaa !5
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds [101 x i32], ptr @ton, i64 0, i64 %44
  %46 = load i32, ptr %45, align 4, !tbaa !5
  %47 = mul nsw i32 %42, %46
  %48 = sub nsw i32 %39, %47
  %49 = call noundef i32 @_Z2dpii(i32 noundef %38, i32 noundef %48)
  %50 = add nsw i32 1, %49
  store i32 %50, ptr %9, align 4, !tbaa !5
  %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 !5
  %53 = load ptr, ptr %6, align 8, !tbaa !9
  store i32 %52, ptr %53, align 4, !tbaa !5
  store i32 %52, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  store i32 1, ptr %7, align 4
  br label %54

54:                                               ; preds = %32, %29
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %55

55:                                               ; preds = %54, %17, %12
  %56 = load i32, ptr %3, align 4
  ret i32 %56
}

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

; 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.end.p0(i64 immarg, ptr nocapture) #1

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 = !{!"any pointer", !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"

@n = external dso_local local_unnamed_addr global i32, align 4
@ton = external dso_local local_unnamed_addr global [101 x i32], align 16
@mem = external dso_local local_unnamed_addr global [101 x [30401 x i32]], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z2dpii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = icmp slt i32 %1, 0
  br i1 %5, label %common.ret16, label %6

6:                                                ; preds = %2
  %7 = load i32, ptr @n, align 4, !tbaa !5
  %8 = icmp eq i32 %7, %0
  br i1 %8, label %common.ret16, label %9

9:                                                ; preds = %6
  %10 = sext i32 %0 to i64
  %11 = zext nneg i32 %1 to i64
  %12 = getelementptr inbounds [101 x [30401 x i32]], ptr @mem, i64 0, i64 %10, i64 %11
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %.not = icmp eq i32 %13, -1
  br i1 %.not, label %14, label %common.ret16

common.ret16:                                     ; preds = %9, %6, %2, %14
  %common.ret16.op = phi i32 [ %24, %14 ], [ -10000000, %2 ], [ 0, %6 ], [ %13, %9 ]
  ret i32 %common.ret16.op

14:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %15 = add nsw i32 %0, 1
  %16 = tail call noundef i32 @_Z2dpii(i32 noundef %15, i32 noundef %1)
  store i32 %16, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #3
  %17 = load i32, ptr @n, align 4, !tbaa !5
  %.neg = sub i32 %0, %17
  %18 = getelementptr inbounds [101 x i32], ptr @ton, i64 0, i64 %10
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %.neg15 = mul i32 %.neg, %19
  %20 = add i32 %.neg15, %1
  %21 = tail call noundef i32 @_Z2dpii(i32 noundef %15, i32 noundef %20)
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %4, align 4, !tbaa !5
  %23 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %24 = load i32, ptr %23, align 4, !tbaa !5
  store i32 %24, ptr %12, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  br label %common.ret16
}

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

; 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 #2

; Function Attrs: mustprogress 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass