; LLVM IR from specinfo-ua/UAPKI :: library/uapki/src/content-hasher.ll (ZN7UapkiNS13ContentHasher5resetEv)

; 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.UapkiNS::ContentHasher" = type { i32, i32, ptr, i8, %"class.std::__cxx11::basic_string", ptr, i64, %"class.UapkiNS::SmartBA" }
%"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] }
%"class.UapkiNS::SmartBA" = type { ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN7UapkiNS13ContentHasher5resetEv(ptr noundef nonnull align 8 dereferenceable(80) %0) #0 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  %4 = getelementptr inbounds %"class.UapkiNS::ContentHasher", ptr %3, i32 0, i32 3
  %5 = load i8, ptr %4, align 8, !tbaa !9, !range !18, !noundef !19
  %6 = trunc i8 %5 to i1
  br i1 %6, label %7, label %15

7:                                                ; preds = %1
  %8 = getelementptr inbounds %"class.UapkiNS::ContentHasher", ptr %3, i32 0, i32 2
  %9 = load ptr, ptr %8, align 8, !tbaa !20
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %15

11:                                               ; preds = %7
  %12 = getelementptr inbounds %"class.UapkiNS::ContentHasher", ptr %3, i32 0, i32 2
  %13 = load ptr, ptr %12, align 8, !tbaa !20
  call void @ba_free(ptr noundef %13)
  %14 = getelementptr inbounds %"class.UapkiNS::ContentHasher", ptr %3, i32 0, i32 2
  store ptr null, ptr %14, align 8, !tbaa !20
  br label %15

15:                                               ; preds = %11, %7, %1
  %16 = getelementptr inbounds %"class.UapkiNS::ContentHasher", ptr %3, i32 0, i32 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5clearEv(ptr noundef nonnull align 8 dereferenceable(32) %16) #3
  %17 = getelementptr inbounds %"class.UapkiNS::ContentHasher", ptr %3, i32 0, i32 5
  store ptr null, ptr %17, align 8, !tbaa !21
  %18 = getelementptr inbounds %"class.UapkiNS::ContentHasher", ptr %3, i32 0, i32 6
  store i64 0, ptr %18, align 8, !tbaa !22
  %19 = getelementptr inbounds %"class.UapkiNS::ContentHasher", ptr %3, i32 0, i32 0
  store i32 0, ptr %19, align 8, !tbaa !23
  ret void
}

declare void @ba_free(ptr noundef) #1

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5clearEv(ptr noundef nonnull align 8 dereferenceable(32)) #2 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" }
attributes #1 = { "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 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, !13, i64 16}
!10 = !{!"_ZTSN7UapkiNS13ContentHasherE", !11, i64 0, !12, i64 4, !6, i64 8, !13, i64 16, !14, i64 24, !6, i64 56, !16, i64 64, !17, i64 72}
!11 = !{!"_ZTSN7UapkiNS13ContentHasher10SourceTypeE", !7, i64 0}
!12 = !{!"_ZTS7HashAlg", !7, i64 0}
!13 = !{!"bool", !7, i64 0}
!14 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !15, i64 0, !16, i64 8, !7, i64 16}
!15 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !6, i64 0}
!16 = !{!"long", !7, i64 0}
!17 = !{!"_ZTSN7UapkiNS7SmartBAE", !6, i64 0}
!18 = !{i8 0, i8 2}
!19 = !{}
!20 = !{!10, !6, i64 8}
!21 = !{!10, !6, i64 56}
!22 = !{!10, !16, i64 64}
!23 = !{!10, !11, 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 void @_ZN7UapkiNS13ContentHasher5resetEv(ptr noundef nonnull align 8 dereferenceable(80) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 16
  %3 = load i8, ptr %2, align 8, !tbaa !5, !range !17, !noundef !18
  %4 = trunc nuw i8 %3 to i1
  br i1 %4, label %5, label %9

5:                                                ; preds = %1
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  %7 = load ptr, ptr %6, align 8, !tbaa !19
  %.not = icmp eq ptr %7, null
  br i1 %.not, label %9, label %8

8:                                                ; preds = %5
  tail call void @ba_free(ptr noundef nonnull %7)
  store ptr null, ptr %6, align 8, !tbaa !19
  br label %9

9:                                                ; preds = %8, %5, %1
  %10 = getelementptr inbounds i8, ptr %0, i64 24
  tail call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5clearEv(ptr noundef nonnull align 8 dereferenceable(32) %10) #4
  %11 = getelementptr inbounds i8, ptr %0, i64 56
  store i32 0, ptr %0, align 8, !tbaa !20
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %11, i8 0, i64 16, i1 false)
  ret void
}

declare void @ba_free(ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5clearEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

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 = { "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 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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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, !12, i64 16}
!6 = !{!"_ZTSN7UapkiNS13ContentHasherE", !7, i64 0, !10, i64 4, !11, i64 8, !12, i64 16, !13, i64 24, !11, i64 56, !15, i64 64, !16, i64 72}
!7 = !{!"_ZTSN7UapkiNS13ContentHasher10SourceTypeE", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTS7HashAlg", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!"bool", !8, i64 0}
!13 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !14, i64 0, !15, i64 8, !8, i64 16}
!14 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !11, i64 0}
!15 = !{!"long", !8, i64 0}
!16 = !{!"_ZTSN7UapkiNS7SmartBAE", !11, i64 0}
!17 = !{i8 0, i8 2}
!18 = !{}
!19 = !{!6, !11, i64 8}
!20 = !{!6, !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InstCombinePass,MemCpyOptPass,SROAPass,TailCallElimPass