; LLVM IR from facebook/redex :: libredex (IRMetaIO)

; 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"

%"struct.ir_meta_io::IRMetaIO::bit_rstate_t" = type { %"struct.ReferencedState::InnerStruct" }
%"struct.ReferencedState::InnerStruct" = type <{ i8, i16, %union.anon.5 }>
%union.anon.5 = type { %struct.anon }
%struct.anon = type { i8 }
%class.ReferencedState = type { %"struct.ReferencedState::InnerStruct", i32, %"struct.std::atomic" }
%"struct.std::atomic" = type { %"struct.std::__atomic_base" }
%"struct.std::__atomic_base" = type { ptr }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSo5writeEPKcl(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef, i64 noundef) #2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN10ir_meta_io8IRMetaIO16serialize_rstateERK15ReferencedStateRSt14basic_ofstreamIcSt11char_traitsIcEE(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef nonnull align 8 dereferenceable(248) %1) #3 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca %"struct.ir_meta_io::IRMetaIO::bit_rstate_t", align 1
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  call void @_ZN10ir_meta_io8IRMetaIO12bit_rstate_tC2Ev(ptr noundef nonnull align 1 dereferenceable(4) %5)
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = getelementptr inbounds %class.ReferencedState, ptr %6, i32 0, i32 0
  %8 = getelementptr inbounds %"struct.ir_meta_io::IRMetaIO::bit_rstate_t", ptr %5, i32 0, i32 0
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %8, ptr align 8 %7, i64 4, i1 false), !tbaa.struct !9
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSo5writeEPKcl(ptr noundef nonnull align 8 dereferenceable(8) %9, ptr noundef %5, i64 noundef 4)
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  ret void
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN10ir_meta_io8IRMetaIO12bit_rstate_tC2Ev(ptr noundef nonnull align 1 dereferenceable(4)) unnamed_addr #4 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 = { 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 #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 = !{i64 0, i64 1, !10, i64 1, i64 2, !10, i64 3, i64 1, !10}
!10 = !{!7, !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"

%"struct.ir_meta_io::IRMetaIO::bit_rstate_t" = type { %"struct.ReferencedState::InnerStruct" }
%"struct.ReferencedState::InnerStruct" = type <{ i8, i16, %union.anon.5 }>
%union.anon.5 = type { %struct.anon }
%struct.anon = type { i8 }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSo5writeEPKcl(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN10ir_meta_io8IRMetaIO16serialize_rstateERK15ReferencedStateRSt14basic_ofstreamIcSt11char_traitsIcEE(ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %0, ptr noundef nonnull align 8 dereferenceable(248) %1) local_unnamed_addr #2 align 2 {
  %3 = alloca %"struct.ir_meta_io::IRMetaIO::bit_rstate_t", align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  call void @_ZN10ir_meta_io8IRMetaIO12bit_rstate_tC2Ev(ptr noundef nonnull align 1 dereferenceable(4) %3)
  %4 = load i32, ptr %0, align 8
  store i32 %4, ptr %3, align 4
  %5 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSo5writeEPKcl(ptr noundef nonnull align 8 dereferenceable(8) %1, ptr noundef nonnull %3, i64 noundef 4)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  ret void
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZN10ir_meta_io8IRMetaIO12bit_rstate_tC2Ev(ptr noundef nonnull align 1 dereferenceable(4)) unnamed_addr #3 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 = { 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 #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)"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass