; LLVM IR from fast-pack/FastPFOR :: src (benchbitpacking)

; 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: 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
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z10pack_tightRKSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEERS3_j(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, i32 noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = call noundef i64 @_ZNKSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #3
  store i64 %10, ptr %7, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store i64 0, ptr %8, align 8, !tbaa !11
  br label %11

11:                                               ; preds = %31, %3
  %12 = load i64, ptr %8, align 8, !tbaa !11
  %13 = load i64, ptr %7, align 8, !tbaa !11
  %14 = udiv i64 %13, 32
  %15 = icmp ult i64 %12, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  br label %34

17:                                               ; preds = %11
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %18, i64 noundef 0) #3
  %20 = load i64, ptr %8, align 8, !tbaa !11
  %21 = mul i64 32, %20
  %22 = getelementptr inbounds i32, ptr %19, i64 %21
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %23, i64 noundef 0) #3
  %25 = load i32, ptr %6, align 4, !tbaa !9
  %26 = zext i32 %25 to i64
  %27 = load i64, ptr %8, align 8, !tbaa !11
  %28 = mul i64 %26, %27
  %29 = getelementptr inbounds i32, ptr %24, i64 %28
  %30 = load i32, ptr %6, align 4, !tbaa !9
  call void @_ZN11FastPForLib10pack_tightILb1EEEvPKjPjj(ptr noundef %22, ptr noundef %29, i32 noundef %30)
  br label %31

31:                                               ; preds = %17
  %32 = load i64, ptr %8, align 8, !tbaa !11
  %33 = add i64 %32, 1
  store i64 %33, ptr %8, align 8, !tbaa !11
  br label %11, !llvm.loop !13

34:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN11FastPForLib10pack_tightILb1EEEvPKjPjj(ptr noalias noundef, ptr noalias noundef, i32 noundef) #2

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 = { 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 = !{!"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, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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 nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z10pack_tightRKSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEERS3_j(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, i32 noundef %2) local_unnamed_addr #1 {
  %4 = tail call noundef i64 @_ZNKSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #2
  %5 = lshr i64 %4, 5
  %.not = icmp ult i64 %4, 32
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %6 = zext i32 %2 to i64
  br label %7

._crit_edge:                                      ; preds = %7, %3
  ret void

7:                                                ; preds = %.lr.ph, %7
  %.09 = phi i64 [ 0, %.lr.ph ], [ %13, %7 ]
  %8 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 0) #2
  %.idx = shl i64 %.09, 7
  %9 = getelementptr inbounds i8, ptr %8, i64 %.idx
  %10 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIjN11FastPForLib19AlignedSTLAllocatorIjLm64EEEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef 0) #2
  %11 = mul i64 %.09, %6
  %12 = getelementptr inbounds i32, ptr %10, i64 %11
  tail call void @_ZN11FastPForLib10pack_tightILb1EEEvPKjPjj(ptr noundef nonnull %9, ptr noundef nonnull %12, i32 noundef %2)
  %13 = add nuw nsw i64 %.09, 1
  %exitcond.not = icmp eq i64 %13, %5
  br i1 %exitcond.not, label %._crit_edge, label %7, !llvm.loop !5
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN11FastPForLib10pack_tightILb1EEEvPKjPjj(ptr noalias noundef, ptr noalias noundef, i32 noundef) local_unnamed_addr #1

attributes #0 = { 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 #1 = { 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 #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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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