; LLVM IR from DimitrisJim/leetcode_solutions :: C/Algorithms (976)

; 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 i32 @cmpi(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 i32 @largestPerimeter(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = sub nsw i32 %12, 2
  store i32 %13, ptr %6, align 4, !tbaa !9
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = load i32, ptr %5, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  call void @qsort(ptr noundef %14, i64 noundef %16, i64 noundef 4, ptr noundef @cmpi)
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %17

17:                                               ; preds = %67, %2
  %18 = load i32, ptr %7, align 4, !tbaa !9
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = icmp slt i32 %18, %19
  br i1 %20, label %22, label %21

21:                                               ; preds = %17
  store i32 2, ptr %8, align 4
  br label %70

22:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = load i32, ptr %7, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds i32, ptr %23, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !9
  store i32 %27, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = load i32, ptr %7, align 4, !tbaa !9
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds i32, ptr %28, i64 %30
  %32 = getelementptr inbounds i32, ptr %31, i64 1
  %33 = load i32, ptr %32, align 4, !tbaa !9
  store i32 %33, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = load i32, ptr %7, align 4, !tbaa !9
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds i32, ptr %34, i64 %36
  %38 = getelementptr inbounds i32, ptr %37, i64 2
  %39 = load i32, ptr %38, align 4, !tbaa !9
  store i32 %39, ptr %11, align 4, !tbaa !9
  %40 = load i32, ptr %9, align 4, !tbaa !9
  %41 = load i32, ptr %10, align 4, !tbaa !9
  %42 = add nsw i32 %40, %41
  %43 = load i32, ptr %11, align 4, !tbaa !9
  %44 = icmp sgt i32 %42, %43
  br i1 %44, label %45, label %63

45:                                               ; preds = %22
  %46 = load i32, ptr %10, align 4, !tbaa !9
  %47 = load i32, ptr %11, align 4, !tbaa !9
  %48 = add nsw i32 %46, %47
  %49 = load i32, ptr %9, align 4, !tbaa !9
  %50 = icmp sgt i32 %48, %49
  br i1 %50, label %51, label %63

51:                                               ; preds = %45
  %52 = load i32, ptr %11, align 4, !tbaa !9
  %53 = load i32, ptr %9, align 4, !tbaa !9
  %54 = add nsw i32 %52, %53
  %55 = load i32, ptr %10, align 4, !tbaa !9
  %56 = icmp sgt i32 %54, %55
  br i1 %56, label %57, label %63

57:                                               ; preds = %51
  %58 = load i32, ptr %9, align 4, !tbaa !9
  %59 = load i32, ptr %10, align 4, !tbaa !9
  %60 = add nsw i32 %58, %59
  %61 = load i32, ptr %11, align 4, !tbaa !9
  %62 = add nsw i32 %60, %61
  store i32 %62, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %64

63:                                               ; preds = %51, %45, %22
  store i32 0, ptr %8, align 4
  br label %64

64:                                               ; preds = %63, %57
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  %65 = load i32, ptr %8, align 4
  switch i32 %65, label %70 [
    i32 0, label %66
  ]

66:                                               ; preds = %64
  br label %67

67:                                               ; preds = %66
  %68 = load i32, ptr %7, align 4, !tbaa !9
  %69 = add nsw i32 %68, 1
  store i32 %69, ptr %7, align 4, !tbaa !9
  br label %17, !llvm.loop !11

70:                                               ; preds = %64, %21
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  %71 = load i32, ptr %8, align 4
  switch i32 %71, label %73 [
    i32 2, label %72
  ]

72:                                               ; preds = %70
  store i32 0, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %73

73:                                               ; preds = %72, %70
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  %74 = load i32, ptr %3, align 4
  ret i32 %74
}

declare void @qsort(ptr noundef, i64 noundef, i64 noundef, ptr noundef) #2

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 = { "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 = !{!"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 i32 @cmpi(ptr noundef, ptr noundef) #0

; Function Attrs: nofree nounwind uwtable
define dso_local i32 @largestPerimeter(ptr noundef %0, i32 noundef %1) local_unnamed_addr #1 {
  %3 = sext i32 %1 to i64
  tail call void @qsort(ptr noundef %0, i64 noundef %3, i64 noundef 4, ptr noundef nonnull @cmpi) #3
  %.not42 = icmp sgt i32 %1, 2
  br i1 %.not42, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %4 = add nsw i32 %1, -2
  %wide.trip.count = zext nneg i32 %4 to i64
  br label %.lr.ph

5:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

.lr.ph:                                           ; preds = %.lr.ph.preheader, %5
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %5 ]
  %6 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %7 = load i32, ptr %6, align 4, !tbaa !7
  %8 = getelementptr inbounds i8, ptr %6, i64 4
  %9 = load i32, ptr %8, align 4, !tbaa !7
  %10 = getelementptr inbounds i8, ptr %6, i64 8
  %11 = load i32, ptr %10, align 4, !tbaa !7
  %12 = add nsw i32 %9, %7
  %13 = icmp sle i32 %12, %11
  %14 = add nsw i32 %11, %9
  %15 = icmp sle i32 %14, %7
  %or.cond.not41 = select i1 %13, i1 true, i1 %15
  %16 = add nsw i32 %11, %7
  %17 = icmp sle i32 %16, %9
  %or.cond35.not = select i1 %or.cond.not41, i1 true, i1 %17
  br i1 %or.cond35.not, label %5, label %._crit_edge.loopexit.split.loop.exit48

._crit_edge.loopexit.split.loop.exit48:           ; preds = %.lr.ph
  %18 = add nsw i32 %12, %11
  br label %._crit_edge

._crit_edge:                                      ; preds = %5, %._crit_edge.loopexit.split.loop.exit48, %2
  %spec.select = phi i32 [ 0, %2 ], [ %18, %._crit_edge.loopexit.split.loop.exit48 ], [ 0, %5 ]
  ret i32 %spec.select
}

; Function Attrs: nofree
declare void @qsort(ptr noundef, i64 noundef, i64 noundef, ptr nocapture noundef) local_unnamed_addr #2

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 = { nofree 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 = { nofree "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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{!8, !8, i64 0}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass