; LLVM IR from div-bargali/Data-Structures-and-Algorithms :: C/Algorithms/Greedy-Algorithms (FractionalKnapsack)

; 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: 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: nounwind uwtable
declare dso_local i32 @partition(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i32 noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @quickSort(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, i32 noundef %4, i32 noundef %5) #1 {
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !5
  store ptr %2, ptr %9, align 8, !tbaa !5
  store ptr %3, ptr %10, align 8, !tbaa !5
  store i32 %4, ptr %11, align 4, !tbaa !9
  store i32 %5, ptr %12, align 4, !tbaa !9
  %14 = load i32, ptr %11, align 4, !tbaa !9
  %15 = load i32, ptr %12, align 4, !tbaa !9
  %16 = icmp slt i32 %14, %15
  br i1 %16, label %17, label %39

17:                                               ; preds = %6
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #2
  %18 = load ptr, ptr %7, align 8, !tbaa !5
  %19 = load ptr, ptr %8, align 8, !tbaa !5
  %20 = load ptr, ptr %9, align 8, !tbaa !5
  %21 = load ptr, ptr %10, align 8, !tbaa !5
  %22 = load i32, ptr %11, align 4, !tbaa !9
  %23 = load i32, ptr %12, align 4, !tbaa !9
  %24 = call i32 @partition(ptr noundef %18, ptr noundef %19, ptr noundef %20, ptr noundef %21, i32 noundef %22, i32 noundef %23)
  store i32 %24, ptr %13, align 4, !tbaa !9
  %25 = load ptr, ptr %7, align 8, !tbaa !5
  %26 = load ptr, ptr %8, align 8, !tbaa !5
  %27 = load ptr, ptr %9, align 8, !tbaa !5
  %28 = load ptr, ptr %10, align 8, !tbaa !5
  %29 = load i32, ptr %11, align 4, !tbaa !9
  %30 = load i32, ptr %13, align 4, !tbaa !9
  %31 = sub nsw i32 %30, 1
  call void @quickSort(ptr noundef %25, ptr noundef %26, ptr noundef %27, ptr noundef %28, i32 noundef %29, i32 noundef %31)
  %32 = load ptr, ptr %7, align 8, !tbaa !5
  %33 = load ptr, ptr %8, align 8, !tbaa !5
  %34 = load ptr, ptr %9, align 8, !tbaa !5
  %35 = load ptr, ptr %10, align 8, !tbaa !5
  %36 = load i32, ptr %13, align 4, !tbaa !9
  %37 = add nsw i32 %36, 1
  %38 = load i32, ptr %12, align 4, !tbaa !9
  call void @quickSort(ptr noundef %32, ptr noundef %33, ptr noundef %34, ptr noundef %35, i32 noundef %37, i32 noundef %38)
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #2
  br label %39

39:                                               ; preds = %17, %6
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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/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: nounwind uwtable
declare dso_local i32 @partition(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @quickSort(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, i32 noundef %4, i32 noundef %5) local_unnamed_addr #0 {
  %7 = icmp slt i32 %4, %5
  br i1 %7, label %tailrecurse, label %tailrecurse._crit_edge

tailrecurse:                                      ; preds = %6, %tailrecurse
  %.tr2325 = phi i32 [ %10, %tailrecurse ], [ %4, %6 ]
  %8 = tail call i32 @partition(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, i32 noundef %.tr2325, i32 noundef %5)
  %9 = add nsw i32 %8, -1
  tail call void @quickSort(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, i32 noundef %.tr2325, i32 noundef %9)
  %10 = add nsw i32 %8, 1
  %11 = icmp slt i32 %10, %5
  br i1 %11, label %tailrecurse, label %tailrecurse._crit_edge

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %6
  ret void
}

attributes #0 = { 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" }

!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)"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass