; LLVM IR from rweather/lightweight-crypto :: src/genavr/code.ll (ZN3Reg5x_ptrEv)

; 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.Reg = type { %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl" = type { %"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" = type { ptr, ptr, ptr }

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3RegC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3RegD2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3Reg5x_ptrEv(ptr dead_on_unwind noalias writable sret(%class.Reg) align 8 %0) #2 align 2 personality ptr @__gxx_personality_v0 {
  %2 = alloca ptr, align 8
  %3 = alloca i1, align 1
  %4 = alloca i8, align 1
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i8, align 1
  store ptr %0, ptr %2, align 8
  store i1 false, ptr %3, align 1
  call void @_ZN3RegC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0)
  %8 = getelementptr inbounds %class.Reg, ptr %0, i32 0, i32 0
  call void @llvm.lifetime.start.p0(i64 1, ptr %4) #3
  store i8 26, ptr %4, align 1, !tbaa !5
  invoke void @_ZNSt6vectorIhSaIhEE9push_backEOh(ptr noundef nonnull align 8 dereferenceable(24) %8, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %9 unwind label %13

9:                                                ; preds = %1
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #3
  %10 = getelementptr inbounds %class.Reg, ptr %0, i32 0, i32 0
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #3
  store i8 27, ptr %7, align 1, !tbaa !5
  invoke void @_ZNSt6vectorIhSaIhEE9push_backEOh(ptr noundef nonnull align 8 dereferenceable(24) %10, ptr noundef nonnull align 1 dereferenceable(1) %7)
          to label %11 unwind label %17

11:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #3
  store i1 true, ptr %3, align 1
  %12 = load i1, ptr %3, align 1
  br i1 %12, label %22, label %21

13:                                               ; preds = %1
  %14 = landingpad { ptr, i32 }
          cleanup
  %15 = extractvalue { ptr, i32 } %14, 0
  store ptr %15, ptr %5, align 8
  %16 = extractvalue { ptr, i32 } %14, 1
  store i32 %16, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 1, ptr %4) #3
  br label %23

17:                                               ; preds = %9
  %18 = landingpad { ptr, i32 }
          cleanup
  %19 = extractvalue { ptr, i32 } %18, 0
  store ptr %19, ptr %5, align 8
  %20 = extractvalue { ptr, i32 } %18, 1
  store i32 %20, ptr %6, align 4
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #3
  br label %23

21:                                               ; preds = %11
  call void @_ZN3RegD2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  br label %22

22:                                               ; preds = %21, %11
  ret void

23:                                               ; preds = %17, %13
  call void @_ZN3RegD2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  br label %24

24:                                               ; preds = %23
  %25 = load ptr, ptr %5, align 8
  %26 = load i32, ptr %6, align 4
  %27 = insertvalue { ptr, i32 } poison, ptr %25, 0
  %28 = insertvalue { ptr, i32 } %27, i32 %26, 1
  resume { ptr, i32 } %28
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIhSaIhEE9push_backEOh(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 1 dereferenceable(1)) #2 align 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}


; 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.Reg = type { %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl" = type { %"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" }
%"struct.std::_Vector_base<unsigned char, std::allocator<unsigned char>>::_Vector_impl_data" = type { ptr, ptr, ptr }

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3RegC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

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

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN3RegD2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN3Reg5x_ptrEv(ptr dead_on_unwind noalias nonnull writable sret(%class.Reg) align 8 %0) local_unnamed_addr #2 align 2 personality ptr @__gxx_personality_v0 {
  %2 = alloca i8, align 1
  %3 = alloca i8, align 1
  tail call void @_ZN3RegC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0)
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %2) #3
  store i8 26, ptr %2, align 1, !tbaa !5
  invoke void @_ZNSt6vectorIhSaIhEE9push_backEOh(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 1 dereferenceable(1) %2)
          to label %4 unwind label %6

4:                                                ; preds = %1
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %3) #3
  store i8 27, ptr %3, align 1, !tbaa !5
  invoke void @_ZNSt6vectorIhSaIhEE9push_backEOh(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 1 dereferenceable(1) %3)
          to label %5 unwind label %8

5:                                                ; preds = %4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #3
  ret void

6:                                                ; preds = %1
  %7 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %2) #3
  br label %10

8:                                                ; preds = %4
  %9 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #3
  br label %10

10:                                               ; preds = %8, %6
  %.pn = phi { ptr, i32 } [ %9, %8 ], [ %7, %6 ]
  call void @_ZN3RegD2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  resume { ptr, i32 } %.pn
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIhSaIhEE9push_backEOh(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #2 align 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}


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