; LLVM IR from facebook/redex :: libresource/Serialize.ll (ZN4arsc9align_vecEmPN7android6VectorIcEE)

; 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: mustprogress uwtable
define dso_local void @_ZN4arsc9align_vecEmPN7android6VectorIcEE(i64 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i64, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i8, align 1
  store i64 %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %8 = load ptr, ptr %4, align 8, !tbaa !9
  %9 = call noundef i64 @_ZNK7android6VectorIcE4sizeEv(ptr noundef nonnull align 8 dereferenceable(40) %8)
  %10 = load i64, ptr %3, align 8, !tbaa !5
  %11 = urem i64 %9, %10
  store i64 %11, ptr %5, align 8, !tbaa !5
  %12 = load i64, ptr %5, align 8, !tbaa !5
  %13 = icmp ugt i64 %12, 0
  br i1 %13, label %14, label %28

14:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %15 = load i64, ptr %3, align 8, !tbaa !5
  %16 = load i64, ptr %5, align 8, !tbaa !5
  %17 = sub i64 %15, %16
  store i64 %17, ptr %6, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %24, %14
  %19 = load i64, ptr %6, align 8, !tbaa !5
  %20 = icmp ugt i64 %19, 0
  br i1 %20, label %22, label %21

21:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %27

22:                                               ; preds = %18
  %23 = load ptr, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #3
  store i8 0, ptr %7, align 1, !tbaa !11
  call void @_ZN7android6VectorIcE9push_backERKc(ptr noundef nonnull align 8 dereferenceable(40) %23, ptr noundef nonnull align 1 dereferenceable(1) %7)
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #3
  br label %24

24:                                               ; preds = %22
  %25 = load i64, ptr %6, align 8, !tbaa !5
  %26 = add i64 %25, -1
  store i64 %26, ptr %6, align 8, !tbaa !5
  br label %18, !llvm.loop !12

27:                                               ; preds = %21
  br label %28

28:                                               ; preds = %27, %2
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret void
}

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i64 @_ZNK7android6VectorIcE4sizeEv(ptr noundef nonnull align 8 dereferenceable(40)) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN7android6VectorIcE9push_backERKc(ptr noundef nonnull align 8 dereferenceable(40), ptr noundef nonnull align 1 dereferenceable(1)) #2 align 2

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

attributes #0 = { mustprogress 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 = { inlinehint mustprogress 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 #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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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 uwtable
define dso_local void @_ZN4arsc9align_vecEmPN7android6VectorIcEE(i64 noundef %0, ptr noundef nonnull %1) local_unnamed_addr #0 {
  %3 = alloca i8, align 1
  %4 = tail call noundef i64 @_ZNK7android6VectorIcE4sizeEv(ptr noundef nonnull align 8 dereferenceable(40) %1)
  %5 = urem i64 %4, %0
  %.not = icmp eq i64 %5, 0
  %6 = sub i64 %0, %5
  %.not89 = icmp eq i64 %6, 0
  %or.cond = or i1 %.not, %.not89
  br i1 %or.cond, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.010 = phi i64 [ %7, %.lr.ph ], [ %6, %2 ]
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %3) #3
  store i8 0, ptr %3, align 1, !tbaa !5
  call void @_ZN7android6VectorIcE9push_backERKc(ptr noundef nonnull align 8 dereferenceable(40) %1, ptr noundef nonnull align 1 dereferenceable(1) %3)
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #3
  %7 = add i64 %.010, -1
  %.not8 = icmp eq i64 %7, 0
  br i1 %.not8, label %.loopexit, label %.lr.ph, !llvm.loop !8

.loopexit:                                        ; preds = %.lr.ph, %2
  ret void
}

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i64 @_ZNK7android6VectorIcE4sizeEv(ptr noundef nonnull align 8 dereferenceable(40)) local_unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN7android6VectorIcE9push_backERKc(ptr noundef nonnull align 8 dereferenceable(40), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #2 align 2

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

attributes #0 = { mustprogress 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint mustprogress 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 #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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


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