; LLVM IR from KoishiDB/Koishi-DB :: src/type/key.ll (ZN8koishidb11InternalKeyC2ERKNS_5SliceEmNS_7KeyTypeE)

; 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.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.koishidb::InternalKey" = type { %"class.std::__cxx11::basic_string" }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN8koishidb11InternalKeyC2ERKNS_5SliceEmNS_7KeyTypeE(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull align 8 dereferenceable(16) %1, i64 noundef %2, i8 noundef zeroext %3) unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca i8, align 1
  %9 = alloca %"class.std::__cxx11::basic_string", align 8
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca i64, align 8
  %13 = alloca %"class.std::__cxx11::basic_string", align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !9
  store i8 %3, ptr %8, align 1, !tbaa !11
  %14 = load ptr, ptr %5, align 8
  %15 = getelementptr inbounds %"class.koishidb::InternalKey", ptr %14, i32 0, i32 0
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %15) #5
  call void @llvm.lifetime.start.p0(i64 32, ptr %9) #5
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  invoke void @_ZNK8koishidb5Slice8ToStringB5cxx11Ev(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %9, ptr noundef nonnull align 8 dereferenceable(16) %16)
          to label %17 unwind label %30

17:                                               ; preds = %4
  %18 = getelementptr inbounds %"class.koishidb::InternalKey", ptr %14, i32 0, i32 0
  %19 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32) %18, ptr noundef nonnull align 8 dereferenceable(32) %9) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %9) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr %9) #5
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #5
  %20 = load i64, ptr %7, align 8, !tbaa !9
  %21 = shl i64 %20, 8
  %22 = load i8, ptr %8, align 1, !tbaa !11
  %23 = sext i8 %22 to i64
  %24 = or i64 %21, %23
  store i64 %24, ptr %12, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 32, ptr %13) #5
  %25 = load i64, ptr %12, align 8, !tbaa !9
  invoke void @_ZNSt7__cxx119to_stringEm(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %13, i64 noundef %25)
          to label %26 unwind label %34

26:                                               ; preds = %17
  %27 = getelementptr inbounds %"class.koishidb::InternalKey", ptr %14, i32 0, i32 0
  %28 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %27, ptr noundef nonnull align 8 dereferenceable(32) %13)
          to label %29 unwind label %38

29:                                               ; preds = %26
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr %13) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #5
  ret void

30:                                               ; preds = %4
  %31 = landingpad { ptr, i32 }
          cleanup
  %32 = extractvalue { ptr, i32 } %31, 0
  store ptr %32, ptr %10, align 8
  %33 = extractvalue { ptr, i32 } %31, 1
  store i32 %33, ptr %11, align 4
  call void @llvm.lifetime.end.p0(i64 32, ptr %9) #5
  br label %43

34:                                               ; preds = %17
  %35 = landingpad { ptr, i32 }
          cleanup
  %36 = extractvalue { ptr, i32 } %35, 0
  store ptr %36, ptr %10, align 8
  %37 = extractvalue { ptr, i32 } %35, 1
  store i32 %37, ptr %11, align 4
  br label %42

38:                                               ; preds = %26
  %39 = landingpad { ptr, i32 }
          cleanup
  %40 = extractvalue { ptr, i32 } %39, 0
  store ptr %40, ptr %10, align 8
  %41 = extractvalue { ptr, i32 } %39, 1
  store i32 %41, ptr %11, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #5
  br label %42

42:                                               ; preds = %38, %34
  call void @llvm.lifetime.end.p0(i64 32, ptr %13) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #5
  br label %43

43:                                               ; preds = %42, %30
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %15) #5
  br label %44

44:                                               ; preds = %43
  %45 = load ptr, ptr %10, align 8
  %46 = load i32, ptr %11, align 4
  %47 = insertvalue { ptr, i32 } poison, ptr %45, 0
  %48 = insertvalue { ptr, i32 } %47, i32 %46, 1
  resume { ptr, i32 } %48
}

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

declare void @_ZNK8koishidb5Slice8ToStringB5cxx11Ev(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(16)) #3

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZNSt7__cxx119to_stringEm(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, i64 noundef) #4

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #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" }
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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 = { 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 #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, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"_ZTSN8koishidb7KeyTypeE", !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"

%"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 uwtable
define dso_local void @_ZN8koishidb11InternalKeyC2ERKNS_5SliceEmNS_7KeyTypeE(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull align 8 dereferenceable(16) %1, i64 noundef %2, i8 noundef zeroext %3) unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %5 = alloca %"class.std::__cxx11::basic_string", align 8
  %6 = alloca %"class.std::__cxx11::basic_string", align 8
  tail call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) #5
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %5) #5
  invoke void @_ZNK8koishidb5Slice8ToStringB5cxx11Ev(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %5, ptr noundef nonnull align 8 dereferenceable(16) %1)
          to label %7 unwind label %15

7:                                                ; preds = %4
  %8 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull align 8 dereferenceable(32) %5) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #5
  %9 = shl i64 %2, 8
  %10 = sext i8 %3 to i64
  %11 = or i64 %9, %10
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %6) #5
  invoke void @_ZNSt7__cxx119to_stringEm(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %6, i64 noundef %11)
          to label %12 unwind label %17

12:                                               ; preds = %7
  %13 = invoke noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull align 8 dereferenceable(32) %6)
          to label %14 unwind label %19

14:                                               ; preds = %12
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %6) #5
  ret void

15:                                               ; preds = %4
  %16 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #5
  br label %22

17:                                               ; preds = %7
  %18 = landingpad { ptr, i32 }
          cleanup
  br label %21

19:                                               ; preds = %12
  %20 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #5
  br label %21

21:                                               ; preds = %19, %17
  %.pn = phi { ptr, i32 } [ %20, %19 ], [ %18, %17 ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %6) #5
  br label %22

22:                                               ; preds = %21, %15
  %.pn.pn = phi { ptr, i32 } [ %.pn, %21 ], [ %16, %15 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %0) #5
  resume { ptr, i32 } %.pn.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

declare void @_ZNK8koishidb5Slice8ToStringB5cxx11Ev(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(16)) local_unnamed_addr #3

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZNSt7__cxx119to_stringEm(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, i64 noundef) local_unnamed_addr #4

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEpLERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) 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" }
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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 = { 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 #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)"}


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