; LLVM IR from codemistic/Data-Structures-and-Algorithms :: Arrays/18_Menu_Based_problem.ll (ZN5Array8isSortedEv)

; 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"

%class.Array = type { ptr, i32, i32 }

; 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: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN5Array8isSortedEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #1 align 2 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %30, %1
  %8 = load i32, ptr %4, align 4, !tbaa !9
  %9 = getelementptr inbounds %class.Array, ptr %6, i32 0, i32 2
  %10 = load i32, ptr %9, align 4, !tbaa !11
  %11 = sub nsw i32 %10, 1
  %12 = icmp slt i32 %8, %11
  br i1 %12, label %13, label %33

13:                                               ; preds = %7
  %14 = getelementptr inbounds %class.Array, ptr %6, i32 0, i32 0
  %15 = load ptr, ptr %14, align 8, !tbaa !13
  %16 = load i32, ptr %4, 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 = getelementptr inbounds %class.Array, ptr %6, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8, !tbaa !13
  %22 = load i32, ptr %4, align 4, !tbaa !9
  %23 = add nsw i32 %22, 1
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds i32, ptr %21, i64 %24
  %26 = load i32, ptr %25, align 4, !tbaa !9
  %27 = icmp sgt i32 %19, %26
  br i1 %27, label %28, label %29

28:                                               ; preds = %13
  store i32 0, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %34

29:                                               ; preds = %13
  br label %30

30:                                               ; preds = %29
  %31 = load i32, ptr %4, align 4, !tbaa !9
  %32 = add nsw i32 %31, 1
  store i32 %32, ptr %4, align 4, !tbaa !9
  br label %7, !llvm.loop !14

33:                                               ; preds = %7
  store i32 1, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %34

34:                                               ; preds = %33, %28
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  %35 = load i32, ptr %2, align 4
  ret i32 %35
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 12}
!12 = !{!"_ZTS5Array", !6, i64 0, !10, i64 8, !10, i64 12}
!13 = !{!12, !6, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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: mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local noundef range(i32 0, 2) i32 @_ZN5Array8isSortedEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 12
  %3 = load i32, ptr %2, align 4, !tbaa !5
  %4 = load ptr, ptr %0, align 8
  %5 = tail call i32 @llvm.smax.i32(i32 %3, i32 1)
  %smax = add nsw i32 %5, -1
  %wide.trip.count = zext nneg i32 %smax to i64
  br label %6

6:                                                ; preds = %7, %1
  %indvars.iv = phi i64 [ %indvars.iv.next, %7 ], [ 0, %1 ]
  %exitcond.not = icmp eq i64 %indvars.iv, %wide.trip.count
  br i1 %exitcond.not, label %13, label %7

7:                                                ; preds = %6
  %8 = getelementptr inbounds i32, ptr %4, i64 %indvars.iv
  %9 = load i32, ptr %8, align 4, !tbaa !11
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %10 = getelementptr inbounds i32, ptr %4, i64 %indvars.iv.next
  %11 = load i32, ptr %10, align 4, !tbaa !11
  %12 = icmp sgt i32 %9, %11
  br i1 %12, label %13, label %6, !llvm.loop !12

13:                                               ; preds = %6, %7
  %.05 = phi i32 [ 0, %7 ], [ 1, %6 ]
  ret i32 %.05
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) 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 speculatable willreturn memory(none) }

!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, !10, i64 12}
!6 = !{!"_ZTS5Array", !7, i64 0, !10, i64 8, !10, i64 12}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!10, !10, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LICMPass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass