; LLVM IR from mkazhdan/DMG :: Util/MultiStreamIO.ll (ZN19FixedIOClientStreamC2Ev)

; 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.FixedIOClientStream = type { %class.IOClient, i32, ptr, ptr, i32, i32, i32, i32, ptr, i8, i32, i32, i32 }
%class.IOClient = type { ptr, %"class.boost::recursive_timed_mutex", ptr }
%"class.boost::recursive_timed_mutex" = type <{ %union.pthread_mutex_t, %union.pthread_cond_t, i8, [7 x i8], i64, i32, [4 x i8] }>
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }
%union.pthread_cond_t = type { %struct.__pthread_cond_s }
%struct.__pthread_cond_s = type { %union.__atomic_wide_counter, %union.__atomic_wide_counter, [2 x i32], [2 x i32], i32, i32, [2 x i32] }
%union.__atomic_wide_counter = type { i64 }

@_ZTV19FixedIOClientStream = external dso_local unnamed_addr constant { [3 x ptr] }, align 8

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nounwind
declare void @_ZN8IOClientD2Ev(ptr noundef nonnull align 8 dereferenceable(128)) unnamed_addr #0

declare void @_ZN8IOClientC2Ev(ptr noundef nonnull align 8 dereferenceable(128)) unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN19FixedIOClientStreamC2Ev(ptr noundef nonnull align 8 dereferenceable(192) %0) unnamed_addr #2 align 2 personality ptr @__gxx_personality_v0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8
  call void @_ZN8IOClientC2Ev(ptr noundef nonnull align 8 dereferenceable(128) %5)
  store ptr getelementptr inbounds inrange(-16, 8) ({ [3 x ptr] }, ptr @_ZTV19FixedIOClientStream, i32 0, i32 0, i32 2), ptr %5, align 8, !tbaa !9
  %6 = getelementptr inbounds %class.FixedIOClientStream, ptr %5, i32 0, i32 8
  store ptr null, ptr %6, align 8, !tbaa !11
  %7 = invoke noundef ptr @_Z11NullPointerIiEPT_v()
          to label %8 unwind label %18

8:                                                ; preds = %1
  %9 = getelementptr inbounds %class.FixedIOClientStream, ptr %5, i32 0, i32 2
  store ptr %7, ptr %9, align 8, !tbaa !18
  %10 = invoke noundef ptr @_Z11NullPointerIhEPT_v()
          to label %11 unwind label %18

11:                                               ; preds = %8
  %12 = getelementptr inbounds %class.FixedIOClientStream, ptr %5, i32 0, i32 3
  store ptr %10, ptr %12, align 8, !tbaa !19
  %13 = getelementptr inbounds %class.FixedIOClientStream, ptr %5, i32 0, i32 7
  store i32 0, ptr %13, align 4, !tbaa !20
  %14 = getelementptr inbounds %class.FixedIOClientStream, ptr %5, i32 0, i32 6
  store i32 0, ptr %14, align 8, !tbaa !21
  %15 = getelementptr inbounds %class.FixedIOClientStream, ptr %5, i32 0, i32 5
  store i32 0, ptr %15, align 4, !tbaa !22
  %16 = getelementptr inbounds %class.FixedIOClientStream, ptr %5, i32 0, i32 4
  store i32 0, ptr %16, align 8, !tbaa !23
  %17 = getelementptr inbounds %class.FixedIOClientStream, ptr %5, i32 0, i32 1
  store i32 0, ptr %17, align 8, !tbaa !24
  ret void

18:                                               ; preds = %8, %1
  %19 = landingpad { ptr, i32 }
          cleanup
  %20 = extractvalue { ptr, i32 } %19, 0
  store ptr %20, ptr %3, align 8
  %21 = extractvalue { ptr, i32 } %19, 1
  store i32 %21, ptr %4, align 4
  call void @_ZN8IOClientD2Ev(ptr noundef nonnull align 8 dereferenceable(128) %5) #4
  br label %22

22:                                               ; preds = %18
  %23 = load ptr, ptr %3, align 8
  %24 = load i32, ptr %4, align 4
  %25 = insertvalue { ptr, i32 } poison, ptr %23, 0
  %26 = insertvalue { ptr, i32 } %25, i32 %24, 1
  resume { ptr, i32 } %26
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_Z11NullPointerIiEPT_v() #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_Z11NullPointerIhEPT_v() #3

attributes #0 = { 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 #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 = { 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 #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, !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 = !{!"vtable pointer", !8, i64 0}
!11 = !{!12, !6, i64 168}
!12 = !{!"_ZTS19FixedIOClientStream", !13, i64 0, !17, i64 128, !6, i64 136, !6, i64 144, !17, i64 152, !17, i64 156, !17, i64 160, !17, i64 164, !6, i64 168, !15, i64 176, !17, i64 180, !17, i64 184, !17, i64 188}
!13 = !{!"_ZTS8IOClient", !14, i64 8, !6, i64 120}
!14 = !{!"_ZTSN5boost21recursive_timed_mutexE", !7, i64 0, !7, i64 40, !15, i64 88, !16, i64 96, !17, i64 104}
!15 = !{!"bool", !7, i64 0}
!16 = !{!"long", !7, i64 0}
!17 = !{!"int", !7, i64 0}
!18 = !{!12, !6, i64 136}
!19 = !{!12, !6, i64 144}
!20 = !{!12, !17, i64 164}
!21 = !{!12, !17, i64 160}
!22 = !{!12, !17, i64 156}
!23 = !{!12, !17, i64 152}
!24 = !{!12, !17, i64 128}


; 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"

@_ZTV19FixedIOClientStream = external dso_local unnamed_addr constant { [3 x ptr] }, align 8

declare i32 @__gxx_personality_v0(...)

declare void @_ZN8IOClientC2Ev(ptr noundef nonnull align 8 dereferenceable(128)) unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN19FixedIOClientStreamC2Ev(ptr noundef nonnull align 8 dereferenceable(192) %0) unnamed_addr #1 align 2 personality ptr @__gxx_personality_v0 {
  tail call void @_ZN8IOClientC2Ev(ptr noundef nonnull align 8 dereferenceable(128) %0)
  store ptr getelementptr inbounds inrange(-16, 8) (i8, ptr @_ZTV19FixedIOClientStream, i64 16), ptr %0, align 8, !tbaa !5
  %2 = getelementptr inbounds i8, ptr %0, i64 168
  store ptr null, ptr %2, align 8, !tbaa !8
  %3 = tail call noundef ptr @_Z11NullPointerIiEPT_v()
  %4 = getelementptr inbounds i8, ptr %0, i64 136
  store ptr %3, ptr %4, align 8, !tbaa !17
  %5 = tail call noundef ptr @_Z11NullPointerIhEPT_v()
  %6 = getelementptr inbounds i8, ptr %0, i64 144
  store ptr %5, ptr %6, align 8, !tbaa !18
  %7 = getelementptr inbounds i8, ptr %0, i64 152
  %8 = getelementptr inbounds i8, ptr %0, i64 128
  store i32 0, ptr %8, align 8, !tbaa !19
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %7, i8 0, i64 16, i1 false)
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_Z11NullPointerIiEPT_v() local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_Z11NullPointerIhEPT_v() local_unnamed_addr #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 = { "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 = { 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) }

!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 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !16, i64 168}
!9 = !{!"_ZTS19FixedIOClientStream", !10, i64 0, !15, i64 128, !16, i64 136, !16, i64 144, !15, i64 152, !15, i64 156, !15, i64 160, !15, i64 164, !16, i64 168, !13, i64 176, !15, i64 180, !15, i64 184, !15, i64 188}
!10 = !{!"_ZTS8IOClient", !11, i64 8, !16, i64 120}
!11 = !{!"_ZTSN5boost21recursive_timed_mutexE", !12, i64 0, !12, i64 40, !13, i64 88, !14, i64 96, !15, i64 104}
!12 = !{!"omnipotent char", !7, i64 0}
!13 = !{!"bool", !12, i64 0}
!14 = !{!"long", !12, i64 0}
!15 = !{!"int", !12, i64 0}
!16 = !{!"any pointer", !12, i64 0}
!17 = !{!9, !16, i64 136}
!18 = !{!9, !16, i64 144}
!19 = !{!9, !15, i64 128}


; Effective O3 passes: GlobalOptPass,InstCombinePass,MemCpyOptPass,SROAPass,SimplifyCFGPass,TailCallElimPass