; LLVM IR from pixelsdb/mini-pixels :: pixels-core/lib/encoding/RunLenIntDecoder.ll (ZN16RunLenIntDecoder4nextEv)

; 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.RunLenIntDecoder = type <{ %class.Decoder, ptr, i8, [3 x i8], i32, i32, [4 x i8], %"class.std::shared_ptr", %class.EncodingUtils, i8, [7 x i8] }>
%class.Decoder = type { ptr }
%"class.std::shared_ptr" = type { %"class.std::__shared_ptr" }
%"class.std::__shared_ptr" = type { ptr, %"class.std::__shared_count" }
%"class.std::__shared_count" = type { ptr }
%class.EncodingUtils = type { ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_ZN16RunLenIntDecoder4nextEv(ptr noundef nonnull align 8 dereferenceable(65) %0) unnamed_addr #0 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  %5 = getelementptr inbounds %class.RunLenIntDecoder, ptr %4, i32 0, i32 5
  %6 = load i32, ptr %5, align 8, !tbaa !9
  %7 = getelementptr inbounds %class.RunLenIntDecoder, ptr %4, i32 0, i32 4
  %8 = load i32, ptr %7, align 4, !tbaa !18
  %9 = icmp eq i32 %6, %8
  br i1 %9, label %10, label %13

10:                                               ; preds = %1
  %11 = getelementptr inbounds %class.RunLenIntDecoder, ptr %4, i32 0, i32 4
  store i32 0, ptr %11, align 4, !tbaa !18
  %12 = getelementptr inbounds %class.RunLenIntDecoder, ptr %4, i32 0, i32 5
  store i32 0, ptr %12, align 8, !tbaa !9
  call void @_ZN16RunLenIntDecoder10readValuesEv(ptr noundef nonnull align 8 dereferenceable(65) %4)
  br label %13

13:                                               ; preds = %10, %1
  %14 = getelementptr inbounds %class.RunLenIntDecoder, ptr %4, i32 0, i32 1
  %15 = load ptr, ptr %14, align 8, !tbaa !19
  %16 = getelementptr inbounds %class.RunLenIntDecoder, ptr %4, i32 0, i32 5
  %17 = load i32, ptr %16, align 8, !tbaa !9
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %16, align 8, !tbaa !9
  %19 = sext i32 %17 to i64
  %20 = getelementptr inbounds i64, ptr %15, i64 %19
  %21 = load i64, ptr %20, align 8, !tbaa !20
  store i64 %21, ptr %3, align 8, !tbaa !20
  %22 = load i64, ptr %3, align 8, !tbaa !20
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret i64 %22
}

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN16RunLenIntDecoder10readValuesEv(ptr noundef nonnull align 8 dereferenceable(65)) #0 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 = { 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, !13, i64 24}
!10 = !{!"_ZTS16RunLenIntDecoder", !11, i64 0, !6, i64 8, !12, i64 16, !13, i64 20, !13, i64 24, !14, i64 32, !17, i64 48, !12, i64 64}
!11 = !{!"_ZTS7Decoder"}
!12 = !{!"bool", !7, i64 0}
!13 = !{!"int", !7, i64 0}
!14 = !{!"_ZTSSt10shared_ptrI10ByteBufferE", !15, i64 0}
!15 = !{!"_ZTSSt12__shared_ptrI10ByteBufferLN9__gnu_cxx12_Lock_policyE2EE", !6, i64 0, !16, i64 8}
!16 = !{!"_ZTSSt14__shared_countILN9__gnu_cxx12_Lock_policyE2EE", !6, i64 0}
!17 = !{!"_ZTS13EncodingUtils", !6, i64 0, !6, i64 8}
!18 = !{!10, !13, i64 20}
!19 = !{!10, !6, i64 8}
!20 = !{!21, !21, i64 0}
!21 = !{!"long", !7, i64 0}


; 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 noundef i64 @_ZN16RunLenIntDecoder4nextEv(ptr noundef nonnull align 8 dereferenceable(65) %0) unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 24
  %3 = load i32, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 20
  %5 = load i32, ptr %4, align 4, !tbaa !17
  %6 = icmp eq i32 %3, %5
  br i1 %6, label %7, label %8

7:                                                ; preds = %1
  store i32 0, ptr %4, align 4, !tbaa !17
  store i32 0, ptr %2, align 8, !tbaa !5
  tail call void @_ZN16RunLenIntDecoder10readValuesEv(ptr noundef nonnull align 8 dereferenceable(65) %0)
  %.pre = load i32, ptr %2, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %7, %1
  %9 = phi i32 [ %.pre, %7 ], [ %3, %1 ]
  %10 = getelementptr inbounds i8, ptr %0, i64 8
  %11 = load ptr, ptr %10, align 8, !tbaa !18
  %12 = add nsw i32 %9, 1
  store i32 %12, ptr %2, align 8, !tbaa !5
  %13 = sext i32 %9 to i64
  %14 = getelementptr inbounds i64, ptr %11, i64 %13
  %15 = load i64, ptr %14, align 8, !tbaa !19
  ret i64 %15
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN16RunLenIntDecoder10readValuesEv(ptr noundef nonnull align 8 dereferenceable(65)) local_unnamed_addr #0 align 2

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" }

!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, !12, i64 24}
!6 = !{!"_ZTS16RunLenIntDecoder", !7, i64 0, !8, i64 8, !11, i64 16, !12, i64 20, !12, i64 24, !13, i64 32, !16, i64 48, !11, i64 64}
!7 = !{!"_ZTS7Decoder"}
!8 = !{!"any pointer", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}
!11 = !{!"bool", !9, i64 0}
!12 = !{!"int", !9, i64 0}
!13 = !{!"_ZTSSt10shared_ptrI10ByteBufferE", !14, i64 0}
!14 = !{!"_ZTSSt12__shared_ptrI10ByteBufferLN9__gnu_cxx12_Lock_policyE2EE", !8, i64 0, !15, i64 8}
!15 = !{!"_ZTSSt14__shared_countILN9__gnu_cxx12_Lock_policyE2EE", !8, i64 0}
!16 = !{!"_ZTS13EncodingUtils", !8, i64 0, !8, i64 8}
!17 = !{!6, !12, i64 20}
!18 = !{!6, !8, i64 8}
!19 = !{!20, !20, i64 0}
!20 = !{!"long", !9, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,TailCallElimPass