; LLVM IR from ahr9n/psolving-paradigms :: 4.dynamic-programming/04.knapsack/UVa 562 - Dividing coins.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
@arr = external dso_local global [101 x i32], align 16
@dp = external dso_local global [101 x [50005 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 %13, label %15

13:                                               ; preds = %2
  %14 = load i32, ptr %5, align 4, !tbaa !5
  store i32 %14, ptr %3, align 4
  br label %53

15:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [101 x [50005 x i32]], ptr @dp, i64 0, i64 %17
  %19 = load i32, ptr %5, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [50005 x i32], ptr %18, i64 0, i64 %20
  store ptr %21, ptr %6, align 8, !tbaa !9
  %22 = load ptr, ptr %6, align 8, !tbaa !9
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %24 = xor i32 %23, -1
  %25 = icmp ne i32 %24, 0
  br i1 %25, label %26, label %29

26:                                               ; preds = %15
  %27 = load ptr, ptr %6, align 8, !tbaa !9
  %28 = load i32, ptr %27, align 4, !tbaa !5
  store i32 %28, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %52

29:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  %30 = load i32, ptr %4, align 4, !tbaa !5
  %31 = add nsw i32 %30, 1
  %32 = load i32, ptr %5, align 4, !tbaa !5
  %33 = load i32, ptr %4, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [101 x i32], ptr @arr, i64 0, i64 %34
  %36 = load i32, ptr %35, align 4, !tbaa !5
  %37 = add nsw i32 %32, %36
  %38 = call noundef i32 @_Z3solii(i32 noundef %31, i32 noundef %37)
  store i32 %38, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %39 = load i32, ptr %4, align 4, !tbaa !5
  %40 = add nsw i32 %39, 1
  %41 = load i32, ptr %4, align 4, !tbaa !5
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds [101 x i32], ptr @arr, i64 0, i64 %42
  %44 = load i32, ptr %43, align 4, !tbaa !5
  %45 = load i32, ptr %5, align 4, !tbaa !5
  %46 = sub nsw i32 %44, %45
  %47 = call i32 @llvm.abs.i32(i32 %46, i1 true)
  %48 = call noundef i32 @_Z3solii(i32 noundef %40, i32 noundef %47)
  store i32 %48, ptr %9, align 4, !tbaa !5
  %49 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %8, ptr noundef nonnull align 4 dereferenceable(4) %9)
  %50 = load i32, ptr %49, align 4, !tbaa !5
  %51 = load ptr, ptr %6, align 8, !tbaa !9
  store i32 %50, ptr %51, align 4, !tbaa !5
  store i32 %50, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  store i32 1, ptr %7, align 4
  br label %52

52:                                               ; preds = %29, %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  br label %53

53:                                               ; preds = %52, %13
  %54 = load i32, ptr %3, align 4
  ret i32 %54
}

; 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 @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.abs.i32(i32, i1 immarg) #3

; 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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = !{!"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
@arr = external dso_local local_unnamed_addr global [101 x i32], align 16
@dp = external dso_local local_unnamed_addr global [101 x [50005 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
  br i1 %6, label %common.ret14, label %7

7:                                                ; preds = %2
  %8 = sext i32 %0 to i64
  %9 = sext i32 %1 to i64
  %10 = getelementptr inbounds [101 x [50005 x i32]], ptr @dp, i64 0, i64 %8, i64 %9
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %.not = icmp eq i32 %11, -1
  br i1 %.not, label %12, label %common.ret14

common.ret14:                                     ; preds = %7, %2, %12
  %common.ret14.op = phi i32 [ %23, %12 ], [ %1, %2 ], [ %11, %7 ]
  ret i32 %common.ret14.op

12:                                               ; preds = %7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  %13 = add nsw i32 %0, 1
  %14 = getelementptr inbounds [101 x i32], ptr @arr, i64 0, i64 %8
  %15 = load i32, ptr %14, align 4, !tbaa !5
  %16 = add nsw i32 %15, %1
  %17 = tail call noundef i32 @_Z3solii(i32 noundef %13, i32 noundef %16)
  store i32 %17, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #4
  %18 = load i32, ptr %14, align 4, !tbaa !5
  %19 = sub nsw i32 %18, %1
  %20 = tail call i32 @llvm.abs.i32(i32 %19, i1 true)
  %21 = tail call noundef i32 @_Z3solii(i32 noundef %13, i32 noundef %20)
  store i32 %21, ptr %4, align 4, !tbaa !5
  %22 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 4 dereferenceable(4) %4)
  %23 = load i32, ptr %22, align 4, !tbaa !5
  store i32 %23, ptr %10, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  br label %common.ret14
}

; 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 @_ZSt3minIiERKT_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 speculatable willreturn memory(none)
declare i32 @llvm.abs.i32(i32, i1 immarg) #3

; 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 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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