; LLVM IR from ninn-kou/Lux :: LeetCode/0075. Sort Colors (75-241020)

; 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: nounwind uwtable
declare dso_local void @swap(ptr noundef, ptr noundef) #0

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

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

; Function Attrs: nounwind uwtable
define dso_local void @sortColors(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %8 = load i32, ptr %4, align 4, !tbaa !9
  %9 = sub nsw i32 %8, 1
  store i32 %9, ptr %7, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %53, %2
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = load i32, ptr %7, align 4, !tbaa !9
  %13 = icmp sle i32 %11, %12
  br i1 %13, label %14, label %54

14:                                               ; preds = %10
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds i32, ptr %15, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !9
  %20 = icmp eq i32 %19, 0
  br i1 %20, label %21, label %32

21:                                               ; preds = %14
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = load i32, ptr %5, align 4, !tbaa !9
  %24 = add nsw i32 %23, 1
  store i32 %24, ptr %5, align 4, !tbaa !9
  %25 = sext i32 %23 to i64
  %26 = getelementptr inbounds i32, ptr %22, i64 %25
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = load i32, ptr %6, align 4, !tbaa !9
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %6, align 4, !tbaa !9
  %30 = sext i32 %28 to i64
  %31 = getelementptr inbounds i32, ptr %27, i64 %30
  call void @swap(ptr noundef %26, ptr noundef %31)
  br label %53

32:                                               ; preds = %14
  %33 = load ptr, ptr %3, align 8, !tbaa !5
  %34 = load i32, ptr %5, align 4, !tbaa !9
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds i32, ptr %33, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !9
  %38 = icmp eq i32 %37, 2
  br i1 %38, label %39, label %49

39:                                               ; preds = %32
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = load i32, ptr %5, align 4, !tbaa !9
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds i32, ptr %40, i64 %42
  %44 = load ptr, ptr %3, align 8, !tbaa !5
  %45 = load i32, ptr %7, align 4, !tbaa !9
  %46 = add nsw i32 %45, -1
  store i32 %46, ptr %7, align 4, !tbaa !9
  %47 = sext i32 %45 to i64
  %48 = getelementptr inbounds i32, ptr %44, i64 %47
  call void @swap(ptr noundef %43, ptr noundef %48)
  br label %52

49:                                               ; preds = %32
  %50 = load i32, ptr %5, align 4, !tbaa !9
  %51 = add nsw i32 %50, 1
  store i32 %51, ptr %5, align 4, !tbaa !9
  br label %52

52:                                               ; preds = %49, %39
  br label %53

53:                                               ; preds = %52, %21
  br label %10, !llvm.loop !11

54:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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 void @swap(ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @sortColors(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %.not20 = icmp slt i32 %1, 1
  br i1 %.not20, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %3 = add nsw i32 %1, -1
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %18
  %.023 = phi i32 [ %.1, %18 ], [ %3, %.lr.ph.preheader ]
  %.01522 = phi i32 [ %.116, %18 ], [ 0, %.lr.ph.preheader ]
  %.01721 = phi i32 [ %.118, %18 ], [ 0, %.lr.ph.preheader ]
  %4 = sext i32 %.01721 to i64
  %5 = getelementptr inbounds i32, ptr %0, i64 %4
  %6 = load i32, ptr %5, align 4, !tbaa !5
  switch i32 %6, label %16 [
    i32 0, label %7
    i32 2, label %12
  ]

7:                                                ; preds = %.lr.ph
  %8 = add nsw i32 %.01721, 1
  %9 = add nsw i32 %.01522, 1
  %10 = sext i32 %.01522 to i64
  %11 = getelementptr inbounds i32, ptr %0, i64 %10
  tail call void @swap(ptr noundef nonnull %5, ptr noundef %11)
  br label %18

12:                                               ; preds = %.lr.ph
  %13 = add nsw i32 %.023, -1
  %14 = sext i32 %.023 to i64
  %15 = getelementptr inbounds i32, ptr %0, i64 %14
  tail call void @swap(ptr noundef nonnull %5, ptr noundef %15)
  br label %18

16:                                               ; preds = %.lr.ph
  %17 = add nsw i32 %.01721, 1
  br label %18

18:                                               ; preds = %12, %16, %7
  %.118 = phi i32 [ %8, %7 ], [ %.01721, %12 ], [ %17, %16 ]
  %.116 = phi i32 [ %9, %7 ], [ %.01522, %12 ], [ %.01522, %16 ]
  %.1 = phi i32 [ %.023, %7 ], [ %13, %12 ], [ %.023, %16 ]
  %.not = icmp sgt i32 %.118, %.1
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %18, %2
  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)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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