; LLVM IR from thepowersgang/mrustc :: src/hir/deserialise.ll (ZN15HirDeserialiser25deserialise_asm_line_fragEv)

; 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.179 }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon.179 = type { i64, [8 x i8] }
%"struct.AsmCommon::LineFragment" = type <{ %"class.std::__cxx11::basic_string", i32, i8, [3 x i8] }>
%class.HirDeserialiser = type { %class.RcString, %"class.std::vector", ptr }
%class.RcString = type { ptr }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<HIR::TypeRef, std::allocator<HIR::TypeRef>>::_Vector_impl" }
%"struct.std::_Vector_base<HIR::TypeRef, std::allocator<HIR::TypeRef>>::_Vector_impl" = type { %"struct.std::_Vector_base<HIR::TypeRef, std::allocator<HIR::TypeRef>>::_Vector_impl_data" }
%"struct.std::_Vector_base<HIR::TypeRef, std::allocator<HIR::TypeRef>>::_Vector_impl_data" = type { ptr, ptr, ptr }

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

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_ZN3HIR9serialise6Reader10read_countEv(ptr noundef nonnull align 8 dereferenceable(96)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3HIR9serialise6Reader11read_stringB5cxx11Ev(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(96)) #1 align 2

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

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN15HirDeserialiser25deserialise_asm_line_fragEv(ptr dead_on_unwind noalias writable sret(%"struct.AsmCommon::LineFragment") align 8 %0, ptr noundef nonnull align 8 dereferenceable(40) %1) #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i1, align 1
  %6 = alloca %"class.std::__cxx11::basic_string", align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  %9 = load ptr, ptr %4, align 8
  store i1 false, ptr %5, align 1
  call void @_ZN9AsmCommon12LineFragmentC2Ev(ptr noundef nonnull align 8 dereferenceable(37) %0)
  call void @llvm.lifetime.start.p0(i64 32, ptr %6) #4
  %10 = getelementptr inbounds %class.HirDeserialiser, ptr %9, i32 0, i32 2
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  invoke void @_ZN3HIR9serialise6Reader11read_stringB5cxx11Ev(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %6, ptr noundef nonnull align 8 dereferenceable(96) %11)
          to label %12 unwind label %28

12:                                               ; preds = %2
  %13 = getelementptr inbounds %"struct.AsmCommon::LineFragment", ptr %0, i32 0, i32 0
  %14 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEaSEOS4_(ptr noundef nonnull align 8 dereferenceable(32) %13, ptr noundef nonnull align 8 dereferenceable(32) %6) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %6) #4
  %15 = getelementptr inbounds %class.HirDeserialiser, ptr %9, i32 0, i32 2
  %16 = load ptr, ptr %15, align 8, !tbaa !9
  %17 = invoke noundef i64 @_ZN3HIR9serialise6Reader10read_countEv(ptr noundef nonnull align 8 dereferenceable(96) %16)
          to label %18 unwind label %32

18:                                               ; preds = %12
  %19 = trunc i64 %17 to i32
  %20 = getelementptr inbounds %"struct.AsmCommon::LineFragment", ptr %0, i32 0, i32 1
  store i32 %19, ptr %20, align 8, !tbaa !16
  %21 = getelementptr inbounds %class.HirDeserialiser, ptr %9, i32 0, i32 2
  %22 = load ptr, ptr %21, align 8, !tbaa !9
  %23 = invoke noundef i64 @_ZN3HIR9serialise6Reader9read_i64cEv(ptr noundef nonnull align 8 dereferenceable(96) %22)
          to label %24 unwind label %32

24:                                               ; preds = %18
  %25 = trunc i64 %23 to i8
  %26 = getelementptr inbounds %"struct.AsmCommon::LineFragment", ptr %0, i32 0, i32 2
  store i8 %25, ptr %26, align 4, !tbaa !22
  store i1 true, ptr %5, align 1
  %27 = load i1, ptr %5, align 1
  br i1 %27, label %37, label %36

28:                                               ; preds = %2
  %29 = landingpad { ptr, i32 }
          cleanup
  %30 = extractvalue { ptr, i32 } %29, 0
  store ptr %30, ptr %7, align 8
  %31 = extractvalue { ptr, i32 } %29, 1
  store i32 %31, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 32, ptr %6) #4
  br label %38

32:                                               ; preds = %18, %12
  %33 = landingpad { ptr, i32 }
          cleanup
  %34 = extractvalue { ptr, i32 } %33, 0
  store ptr %34, ptr %7, align 8
  %35 = extractvalue { ptr, i32 } %33, 1
  store i32 %35, ptr %8, align 4
  br label %38

36:                                               ; preds = %24
  call void @_ZN9AsmCommon12LineFragmentD2Ev(ptr noundef nonnull align 8 dereferenceable(37) %0) #4
  br label %37

37:                                               ; preds = %36, %24
  ret void

38:                                               ; preds = %32, %28
  call void @_ZN9AsmCommon12LineFragmentD2Ev(ptr noundef nonnull align 8 dereferenceable(37) %0) #4
  br label %39

39:                                               ; preds = %38
  %40 = load ptr, ptr %7, align 8
  %41 = load i32, ptr %8, align 4
  %42 = insertvalue { ptr, i32 } poison, ptr %40, 0
  %43 = insertvalue { ptr, i32 } %42, i32 %41, 1
  resume { ptr, i32 } %43
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9AsmCommon12LineFragmentC2Ev(ptr noundef nonnull align 8 dereferenceable(37)) unnamed_addr #2 align 2

; 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)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_ZN3HIR9serialise6Reader9read_i64cEv(ptr noundef nonnull align 8 dereferenceable(96)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN9AsmCommon12LineFragmentD2Ev(ptr noundef nonnull align 8 dereferenceable(37)) unnamed_addr #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { inlinehint 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, !6, i64 32}
!10 = !{!"_ZTS15HirDeserialiser", !11, i64 0, !12, i64 8, !6, i64 32}
!11 = !{!"_ZTS8RcString", !6, i64 0}
!12 = !{!"_ZTSSt6vectorIN3HIR7TypeRefESaIS1_EE", !13, i64 0}
!13 = !{!"_ZTSSt12_Vector_baseIN3HIR7TypeRefESaIS1_EE", !14, i64 0}
!14 = !{!"_ZTSNSt12_Vector_baseIN3HIR7TypeRefESaIS1_EE12_Vector_implE", !15, i64 0}
!15 = !{!"_ZTSNSt12_Vector_baseIN3HIR7TypeRefESaIS1_EE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!16 = !{!17, !21, i64 32}
!17 = !{!"_ZTSN9AsmCommon12LineFragmentE", !18, i64 0, !21, i64 32, !7, i64 36}
!18 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !19, i64 0, !20, i64 8, !7, i64 16}
!19 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !6, i64 0}
!20 = !{!"long", !7, i64 0}
!21 = !{!"int", !7, i64 0}
!22 = !{!17, !7, i64 36}


; 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.179 }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon.179 = type { i64, [8 x i8] }
%"struct.AsmCommon::LineFragment" = type <{ %"class.std::__cxx11::basic_string", i32, i8, [3 x i8] }>

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

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_ZN3HIR9serialise6Reader10read_countEv(ptr noundef nonnull align 8 dereferenceable(96)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3HIR9serialise6Reader11read_stringB5cxx11Ev(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(96)) 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 #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN15HirDeserialiser25deserialise_asm_line_fragEv(ptr dead_on_unwind noalias nonnull writable sret(%"struct.AsmCommon::LineFragment") align 8 %0, ptr nocapture noundef nonnull readonly align 8 dereferenceable(40) %1) local_unnamed_addr #1 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.std::__cxx11::basic_string", align 8
  tail call void @_ZN9AsmCommon12LineFragmentC2Ev(ptr noundef nonnull align 8 dereferenceable(37) %0)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %3) #4
  %4 = getelementptr inbounds i8, ptr %1, i64 32
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  invoke void @_ZN3HIR9serialise6Reader11read_stringB5cxx11Ev(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %3, ptr noundef nonnull align 8 dereferenceable(96) %5)
          to label %6 unwind label %18

6:                                                ; preds = %2
  %7 = 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) %3) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #4
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = invoke noundef i64 @_ZN3HIR9serialise6Reader10read_countEv(ptr noundef nonnull align 8 dereferenceable(96) %8)
          to label %10 unwind label %20

10:                                               ; preds = %6
  %11 = trunc i64 %9 to i32
  %12 = getelementptr inbounds i8, ptr %0, i64 32
  store i32 %11, ptr %12, align 8, !tbaa !15
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = invoke noundef i64 @_ZN3HIR9serialise6Reader9read_i64cEv(ptr noundef nonnull align 8 dereferenceable(96) %13)
          to label %15 unwind label %20

15:                                               ; preds = %10
  %16 = trunc i64 %14 to i8
  %17 = getelementptr inbounds i8, ptr %0, i64 36
  store i8 %16, ptr %17, align 4, !tbaa !21
  ret void

18:                                               ; preds = %2
  %19 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #4
  br label %22

20:                                               ; preds = %10, %6
  %21 = landingpad { ptr, i32 }
          cleanup
  br label %22

22:                                               ; preds = %20, %18
  %.pn = phi { ptr, i32 } [ %21, %20 ], [ %19, %18 ]
  call void @_ZN9AsmCommon12LineFragmentD2Ev(ptr noundef nonnull align 8 dereferenceable(37) %0) #4
  resume { ptr, i32 } %.pn
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN9AsmCommon12LineFragmentC2Ev(ptr noundef nonnull align 8 dereferenceable(37)) unnamed_addr #2 align 2

; 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 #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i64 @_ZN3HIR9serialise6Reader9read_i64cEv(ptr noundef nonnull align 8 dereferenceable(96)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN9AsmCommon12LineFragmentD2Ev(ptr noundef nonnull align 8 dereferenceable(37)) unnamed_addr #3 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { inlinehint 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, !8, i64 32}
!6 = !{!"_ZTS15HirDeserialiser", !7, i64 0, !11, i64 8, !8, i64 32}
!7 = !{!"_ZTS8RcString", !8, i64 0}
!8 = !{!"any pointer", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}
!11 = !{!"_ZTSSt6vectorIN3HIR7TypeRefESaIS1_EE", !12, i64 0}
!12 = !{!"_ZTSSt12_Vector_baseIN3HIR7TypeRefESaIS1_EE", !13, i64 0}
!13 = !{!"_ZTSNSt12_Vector_baseIN3HIR7TypeRefESaIS1_EE12_Vector_implE", !14, i64 0}
!14 = !{!"_ZTSNSt12_Vector_baseIN3HIR7TypeRefESaIS1_EE17_Vector_impl_dataE", !8, i64 0, !8, i64 8, !8, i64 16}
!15 = !{!16, !20, i64 32}
!16 = !{!"_ZTSN9AsmCommon12LineFragmentE", !17, i64 0, !20, i64 32, !9, i64 36}
!17 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !18, i64 0, !19, i64 8, !9, i64 16}
!18 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !8, i64 0}
!19 = !{!"long", !9, i64 0}
!20 = !{!"int", !9, i64 0}
!21 = !{!16, !9, i64 36}


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