; LLVM IR from codemistic/Data-Structures-and-Algorithms :: Arrays/18_Menu_Based_problem.ll (ZN5Array7ReverseEv)

; 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 void @_ZN5Array7ReverseEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %6 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %7 = getelementptr inbounds %class.Array, ptr %6, i32 0, i32 2
  %8 = load i32, ptr %7, align 4, !tbaa !9
  %9 = sub nsw i32 %8, 1
  store i32 %9, ptr %4, align 4, !tbaa !12
  store i32 0, ptr %5, align 4, !tbaa !12
  br label %10

10:                                               ; preds = %24, %1
  %11 = load i32, ptr %4, align 4, !tbaa !12
  %12 = icmp sge i32 %11, 0
  br i1 %12, label %13, label %29

13:                                               ; preds = %10
  %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 !12
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds i32, ptr %15, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !12
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = load i32, ptr %5, align 4, !tbaa !12
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds i32, ptr %20, i64 %22
  store i32 %19, ptr %23, align 4, !tbaa !12
  br label %24

24:                                               ; preds = %13
  %25 = load i32, ptr %4, align 4, !tbaa !12
  %26 = add nsw i32 %25, -1
  store i32 %26, ptr %4, align 4, !tbaa !12
  %27 = load i32, ptr %5, align 4, !tbaa !12
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %5, align 4, !tbaa !12
  br label %10, !llvm.loop !14

29:                                               ; preds = %10
  store i32 0, ptr %4, align 4, !tbaa !12
  br label %30

30:                                               ; preds = %46, %29
  %31 = load i32, ptr %4, align 4, !tbaa !12
  %32 = getelementptr inbounds %class.Array, ptr %6, i32 0, i32 2
  %33 = load i32, ptr %32, align 4, !tbaa !9
  %34 = icmp slt i32 %31, %33
  br i1 %34, label %35, label %49

35:                                               ; preds = %30
  %36 = load ptr, ptr %3, align 8, !tbaa !5
  %37 = load i32, ptr %4, align 4, !tbaa !12
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds i32, ptr %36, i64 %38
  %40 = load i32, ptr %39, align 4, !tbaa !12
  %41 = getelementptr inbounds %class.Array, ptr %6, i32 0, i32 0
  %42 = load ptr, ptr %41, align 8, !tbaa !13
  %43 = load i32, ptr %4, align 4, !tbaa !12
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds i32, ptr %42, i64 %44
  store i32 %40, ptr %45, align 4, !tbaa !12
  br label %46

46:                                               ; preds = %35
  %47 = load i32, ptr %4, align 4, !tbaa !12
  %48 = add nsw i32 %47, 1
  store i32 %48, ptr %4, align 4, !tbaa !12
  br label %30, !llvm.loop !16

49:                                               ; preds = %30
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret void
}

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, !11, i64 12}
!10 = !{!"_ZTS5Array", !6, i64 0, !11, i64 8, !11, i64 12}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !6, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}
!16 = distinct !{!16, !15}


; 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(argmem: read, inaccessiblemem: write) uwtable
define dso_local void @_ZN5Array7ReverseEv(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 = icmp slt i32 %3, 1
  tail call void @llvm.assume(i1 %4)
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)
declare void @llvm.assume(i1 noundef) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read, inaccessiblemem: write) 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(inaccessiblemem: write) }

!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}


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