; LLVM IR from DimitrisJim/leetcode_solutions :: C/Algorithms (1502)

; 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 zeroext i1 @canMakeArithmeticProgression(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i1, align 1
  %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
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = sext i32 %10 to i64
  call void @qsort(ptr noundef %9, i64 noundef %11, i64 noundef 4, ptr noundef @cmpi)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds i32, ptr %12, i64 1
  %14 = load i32, ptr %13, align 4, !tbaa !9
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds i32, ptr %15, i64 0
  %17 = load i32, ptr %16, align 4, !tbaa !9
  %18 = sub nsw i32 %14, %17
  store i32 %18, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 2, ptr %7, align 4, !tbaa !9
  br label %19

19:                                               ; preds = %41, %2
  %20 = load i32, ptr %7, align 4, !tbaa !9
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %19
  store i32 2, ptr %8, align 4
  br label %44

24:                                               ; preds = %19
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = load i32, ptr %7, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds i32, ptr %25, i64 %27
  %29 = load i32, ptr %28, align 4, !tbaa !9
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = load i32, ptr %7, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds i32, ptr %30, i64 %32
  %34 = getelementptr inbounds i32, ptr %33, i64 -1
  %35 = load i32, ptr %34, align 4, !tbaa !9
  %36 = load i32, ptr %6, align 4, !tbaa !9
  %37 = add nsw i32 %35, %36
  %38 = icmp ne i32 %29, %37
  br i1 %38, label %39, label %40

39:                                               ; preds = %24
  store i1 false, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %44

40:                                               ; preds = %24
  br label %41

41:                                               ; preds = %40
  %42 = load i32, ptr %7, align 4, !tbaa !9
  %43 = add nsw i32 %42, 1
  store i32 %43, ptr %7, align 4, !tbaa !9
  br label %19, !llvm.loop !11

44:                                               ; preds = %39, %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  %45 = load i32, ptr %8, align 4
  switch i32 %45, label %47 [
    i32 2, label %46
  ]

46:                                               ; preds = %44
  store i1 true, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %47

47:                                               ; preds = %46, %44
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  %48 = load i1, ptr %3, align 1
  ret i1 %48
}

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 zeroext i1 @canMakeArithmeticProgression(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
  %4 = getelementptr inbounds i8, ptr %0, i64 4
  %5 = load i32, ptr %4, align 4, !tbaa !5
  %6 = load i32, ptr %0, align 4, !tbaa !5
  %7 = sub i32 %5, %6
  %.not1516 = icmp slt i32 %1, 3
  br i1 %.not1516, label %.critedge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext nneg i32 %1 to i64
  %8 = getelementptr inbounds i8, ptr %0, i64 8
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %0, i64 4
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %12 = add nsw i32 %7, %11
  %.not21 = icmp eq i32 %9, %12
  br i1 %.not21, label %.lr.ph23, label %.critedge

.lr.ph23:                                         ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv22 = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 2, %.lr.ph.preheader ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv22, 1
  %exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond, label %.critedge.loopexit, label %.lr.ph, !llvm.loop !9

.lr.ph:                                           ; preds = %.lr.ph23
  %13 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv.next
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = getelementptr inbounds i8, ptr %13, i64 -4
  %16 = load i32, ptr %15, align 4, !tbaa !5
  %17 = add nsw i32 %7, %16
  %.not = icmp eq i32 %14, %17
  br i1 %.not, label %.lr.ph23, label %.critedge.loopexit, !llvm.loop !9

.critedge.loopexit:                               ; preds = %.lr.ph, %.lr.ph23
  %.not15.le = icmp sge i64 %indvars.iv.next, %3
  br label %.critedge

.critedge:                                        ; preds = %.critedge.loopexit, %.lr.ph.preheader, %2
  %.not15.lcssa = phi i1 [ true, %2 ], [ false, %.lr.ph.preheader ], [ %.not15.le, %.critedge.loopexit ]
  ret i1 %.not15.lcssa
}

; 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 = !{!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,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass