; LLVM IR from pixelsdb/mini-pixels :: pixels-common/lib/physical/natives/ByteBuffer.ll (ZN10ByteBuffer5clearEv)

; 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.ByteBuffer = type <{ i32, i32, ptr, i32, [4 x i8], %"class.std::__cxx11::basic_string", i32, i8, i8, [2 x i8] }>
%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN10ByteBuffer13resetPositionEv(ptr noundef nonnull align 8 dereferenceable(62)) #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN10ByteBuffer5clearEv(ptr noundef nonnull align 8 dereferenceable(62) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  call void @_ZN10ByteBuffer13resetPositionEv(ptr noundef nonnull align 8 dereferenceable(62) %3)
  %4 = getelementptr inbounds %class.ByteBuffer, ptr %3, i32 0, i32 7
  %5 = load i8, ptr %4, align 4, !tbaa !9, !range !16, !noundef !17
  %6 = trunc i8 %5 to i1
  br i1 %6, label %26, label %7

7:                                                ; preds = %1
  %8 = getelementptr inbounds %class.ByteBuffer, ptr %3, i32 0, i32 2
  %9 = load ptr, ptr %8, align 8, !tbaa !18
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %25

11:                                               ; preds = %7
  %12 = getelementptr inbounds %class.ByteBuffer, ptr %3, i32 0, i32 8
  %13 = load i8, ptr %12, align 1, !tbaa !19, !range !16, !noundef !17
  %14 = trunc i8 %13 to i1
  br i1 %14, label %15, label %21

15:                                               ; preds = %11
  %16 = getelementptr inbounds %class.ByteBuffer, ptr %3, i32 0, i32 2
  %17 = load ptr, ptr %16, align 8, !tbaa !18
  %18 = icmp eq ptr %17, null
  br i1 %18, label %20, label %19

19:                                               ; preds = %15
  call void @_ZdaPv(ptr noundef %17) #4
  br label %20

20:                                               ; preds = %19, %15
  br label %24

21:                                               ; preds = %11
  %22 = getelementptr inbounds %class.ByteBuffer, ptr %3, i32 0, i32 2
  %23 = load ptr, ptr %22, align 8, !tbaa !18
  call void @free(ptr noundef %23) #5
  br label %24

24:                                               ; preds = %21, %20
  br label %25

25:                                               ; preds = %24, %7
  br label %26

26:                                               ; preds = %25, %1
  %27 = getelementptr inbounds %class.ByteBuffer, ptr %3, i32 0, i32 2
  store ptr null, ptr %27, align 8, !tbaa !18
  %28 = getelementptr inbounds %class.ByteBuffer, ptr %3, i32 0, i32 3
  store i32 0, ptr %28, align 8, !tbaa !20
  ret void
}

; Function Attrs: nobuiltin nounwind
declare void @_ZdaPv(ptr noundef) #2

; Function Attrs: nounwind
declare void @free(ptr noundef) #3

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 = { nobuiltin nounwind "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 "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 #4 = { builtin nounwind }
attributes #5 = { 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, !15, i64 60}
!10 = !{!"_ZTS10ByteBuffer", !11, i64 0, !11, i64 4, !6, i64 8, !11, i64 16, !12, i64 24, !11, i64 56, !15, i64 60, !15, i64 61}
!11 = !{!"int", !7, i64 0}
!12 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !13, i64 0, !14, i64 8, !7, i64 16}
!13 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !6, i64 0}
!14 = !{!"long", !7, i64 0}
!15 = !{!"bool", !7, i64 0}
!16 = !{i8 0, i8 2}
!17 = !{}
!18 = !{!10, !6, i64 8}
!19 = !{!10, !15, i64 61}
!20 = !{!10, !11, i64 16}


; 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 void @_ZN10ByteBuffer13resetPositionEv(ptr noundef nonnull align 8 dereferenceable(62)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN10ByteBuffer5clearEv(ptr noundef nonnull align 8 dereferenceable(62) %0) local_unnamed_addr #0 align 2 {
  tail call void @_ZN10ByteBuffer13resetPositionEv(ptr noundef nonnull align 8 dereferenceable(62) %0)
  %2 = getelementptr inbounds i8, ptr %0, i64 60
  %3 = load i8, ptr %2, align 4, !tbaa !5, !range !15, !noundef !16
  %4 = trunc nuw i8 %3 to i1
  br i1 %4, label %14, label %5

5:                                                ; preds = %1
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  %7 = load ptr, ptr %6, align 8, !tbaa !17
  %.not = icmp eq ptr %7, null
  br i1 %.not, label %14, label %8

8:                                                ; preds = %5
  %9 = getelementptr inbounds i8, ptr %0, i64 61
  %10 = load i8, ptr %9, align 1, !tbaa !18, !range !15, !noundef !16
  %11 = trunc nuw i8 %10 to i1
  br i1 %11, label %12, label %13

12:                                               ; preds = %8
  tail call void @_ZdaPv(ptr noundef nonnull %7) #3
  br label %14

13:                                               ; preds = %8
  tail call void @free(ptr noundef nonnull %7) #4
  br label %14

14:                                               ; preds = %5, %12, %13, %1
  %15 = getelementptr inbounds i8, ptr %0, i64 8
  store ptr null, ptr %15, align 8, !tbaa !17
  %16 = getelementptr inbounds i8, ptr %0, i64 16
  store i32 0, ptr %16, align 8, !tbaa !19
  ret void
}

; Function Attrs: nobuiltin nounwind
declare void @_ZdaPv(ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #2

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 = { nobuiltin nounwind "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 nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { builtin nounwind }
attributes #4 = { 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, !14, i64 60}
!6 = !{!"_ZTS10ByteBuffer", !7, i64 0, !7, i64 4, !10, i64 8, !7, i64 16, !11, i64 24, !7, i64 56, !14, i64 60, !14, i64 61}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !12, i64 0, !13, i64 8, !8, i64 16}
!12 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !10, i64 0}
!13 = !{!"long", !8, i64 0}
!14 = !{!"bool", !8, i64 0}
!15 = !{i8 0, i8 2}
!16 = !{}
!17 = !{!6, !10, i64 8}
!18 = !{!6, !14, i64 61}
!19 = !{!6, !7, i64 16}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass