; LLVM IR from ahr9n/psolving-paradigms :: 4.dynamic-programming/04.knapsack/UVa 10130 - SuperSale.ll (Z3solii)

; 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
@pw = external dso_local global [1005 x [2 x i32]], align 16
@dp = external dso_local global [1005 x [35 x i32]], align 16

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z3solii(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 %4, align 4, !tbaa !5
  %11 = load i32, ptr @n, align 4, !tbaa !5
  %12 = icmp eq i32 %10, %11
  br i1 %12, label %16, label %13

13:                                               ; preds = %2
  %14 = load i32, ptr %5, align 4, !tbaa !5
  %15 = icmp slt i32 %14, 1
  br i1 %15, label %16, label %17

16:                                               ; preds = %13, %2
  store i32 0, ptr %3, align 4
  br label %65

17:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds [1005 x [35 x i32]], ptr @dp, i64 0, i64 %19
  %21 = load i32, ptr %5, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [35 x i32], ptr %20, i64 0, i64 %22
  store ptr %23, ptr %6, align 8, !tbaa !9
  %24 = load ptr, ptr %6, align 8, !tbaa !9
  %25 = load i32, ptr %24, align 4, !tbaa !5
  %26 = xor i32 %25, -1
  %27 = icmp ne i32 %26, 0
  br i1 %27, label %28, label %31

28:                                               ; preds = %17
  %29 = load ptr, ptr %6, align 8, !tbaa !9
  %30 = load i32, ptr %29, align 4, !tbaa !5
  store i32 %30, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %64

31:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  %32 = load i32, ptr %4, align 4, !tbaa !5
  %33 = add nsw i32 %32, 1
  %34 = load i32, ptr %5, align 4, !tbaa !5
  %35 = call noundef i32 @_Z3solii(i32 noundef %33, i32 noundef %34)
  store i32 %35, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  store i32 0, ptr %9, align 4, !tbaa !5
  %36 = load i32, ptr %5, align 4, !tbaa !5
  %37 = load i32, ptr %4, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds [1005 x [2 x i32]], ptr @pw, i64 0, i64 %38
  %40 = getelementptr inbounds [2 x i32], ptr %39, i64 0, i64 1
  %41 = load i32, ptr %40, align 4, !tbaa !5
  %42 = icmp sge i32 %36, %41
  br i1 %42, label %43, label %60

43:                                               ; preds = %31
  %44 = load i32, ptr %4, align 4, !tbaa !5
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds [1005 x [2 x i32]], ptr @pw, i64 0, i64 %45
  %47 = getelementptr inbounds [2 x i32], ptr %46, i64 0, i64 0
  %48 = load i32, ptr %47, align 8, !tbaa !5
  %49 = load i32, ptr %4, align 4, !tbaa !5
  %50 = add nsw i32 %49, 1
  %51 = load i32, ptr %5, align 4, !tbaa !5
  %52 = load i32, ptr %4, align 4, !tbaa !5
  %53 = sext i32 %52 to i64
  %54 = getelementptr inbounds [1005 x [2 x i32]], ptr @pw, i64 0, i64 %53
  %55 = getelementptr inbounds [2 x i32], ptr %54, i64 0, i64 1
  %56 = load i32, ptr %55, align 4, !tbaa !5
  %57 = sub nsw i32 %51, %56
  %58 = call noundef i32 @_Z3solii(i32 noundef %50, i32 noundef %57)
  %59 = add nsw i32 %48, %58
  store i32 %59, ptr %9, align 4, !tbaa !5
  br label %60

60:                                               ; preds = %43, %31
  %61 = 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)
  %62 = load i32, ptr %61, align 4, !tbaa !5
  %63 = load ptr, ptr %6, align 8, !tbaa !9
  store i32 %62, ptr %63, align 4, !tbaa !5
  store i32 %62, ptr %3, align 4
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  br label %64

64:                                               ; preds = %60, %28
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %65

65:                                               ; preds = %64, %16
  %66 = load i32, ptr %3, align 4
  ret i32 %66
}

; 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
@pw = external dso_local local_unnamed_addr global [1005 x [2 x i32]], align 16
@dp = external dso_local local_unnamed_addr global [1005 x [35 x i32]], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z3solii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = load i32, ptr @n, align 4, !tbaa !5
  %6 = icmp eq i32 %5, %0
  %7 = icmp slt i32 %1, 1
  %or.cond = or i1 %7, %6
  br i1 %or.cond, label %27, label %8

8:                                                ; preds = %2
  %9 = sext i32 %0 to i64
  %10 = zext nneg i32 %1 to i64
  %11 = getelementptr inbounds [1005 x [35 x i32]], ptr @dp, i64 0, i64 %9, i64 %10
  %12 = load i32, ptr %11, align 4, !tbaa !5
  %.not = icmp eq i32 %12, -1
  br i1 %.not, label %13, label %27

13:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %14 = add nsw i32 %0, 1
  %15 = tail call noundef i32 @_Z3solii(i32 noundef %14, i32 noundef %1)
  store i32 %15, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #3
  store i32 0, ptr %4, align 4, !tbaa !5
  %16 = getelementptr inbounds [1005 x [2 x i32]], ptr @pw, i64 0, i64 %9
  %17 = getelementptr inbounds i8, ptr %16, i64 4
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %.not19 = icmp sgt i32 %18, %1
  br i1 %.not19, label %24, label %19

19:                                               ; preds = %13
  %20 = load i32, ptr %16, align 8, !tbaa !5
  %21 = sub nsw i32 %1, %18
  %22 = tail call noundef i32 @_Z3solii(i32 noundef %14, i32 noundef %21)
  %23 = add nsw i32 %22, %20
  store i32 %23, ptr %4, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %19, %13
  %25 = 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)
  %26 = load i32, ptr %25, align 4, !tbaa !5
  store i32 %26, ptr %11, 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 %27

27:                                               ; preds = %24, %8, %2
  %.1 = phi i32 [ 0, %2 ], [ %26, %24 ], [ %12, %8 ]
  ret i32 %.1
}

; 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,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass