; LLVM IR from thepowersgang/mrustc :: tools/standalone_miri/lex.ll (ZN5Lexer7consumeEv)

; 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.Token = type { i32, %"class.std::__cxx11::basic_string", %"union.Token::Numbers" }
%"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] }
%"union.Token::Numbers" = type { %class.U128 }
%class.U128 = type { i64, i64 }
%class.Lexer = type { %"class.std::__cxx11::basic_string", i32, %"class.std::basic_ifstream", %struct.Token, i8, %struct.Token }
%"class.std::basic_ifstream" = type { %"class.std::basic_istream.base", %"class.std::basic_filebuf", %"class.std::basic_ios" }
%"class.std::basic_istream.base" = type { ptr, i64 }
%"class.std::basic_filebuf" = type { %"class.std::basic_streambuf", %union.pthread_mutex_t, %"class.std::__basic_file", i32, %struct.__mbstate_t, %struct.__mbstate_t, %struct.__mbstate_t, ptr, i64, i8, i8, i8, i8, ptr, ptr, i8, ptr, ptr, i64, ptr, ptr }
%"class.std::basic_streambuf" = type { ptr, ptr, ptr, ptr, ptr, ptr, ptr, %"class.std::locale" }
%"class.std::locale" = type { ptr }
%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 }
%"class.std::__basic_file" = type <{ ptr, i8, [7 x i8] }>
%struct.__mbstate_t = type { i32, %union.anon.0 }
%union.anon.0 = type { i32 }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5Lexer7advanceEv(ptr noundef nonnull align 8 dereferenceable(680)) #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN5TokenD2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN5TokenC2EOS_(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN5Lexer7consumeEv(ptr dead_on_unwind noalias writable sret(%struct.Token) align 8 %0, ptr noundef nonnull align 8 dereferenceable(680) %1) #0 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i1, align 1
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8
  store i1 false, ptr %5, align 1
  %9 = getelementptr inbounds %class.Lexer, ptr %8, i32 0, i32 3
  call void @_ZN5TokenC2EOS_(ptr noundef nonnull align 8 dereferenceable(56) %0, ptr noundef nonnull align 8 dereferenceable(56) %9) #2
  invoke void @_ZN5Lexer7advanceEv(ptr noundef nonnull align 8 dereferenceable(680) %8)
          to label %10 unwind label %12

10:                                               ; preds = %2
  store i1 true, ptr %5, align 1
  %11 = load i1, ptr %5, align 1
  br i1 %11, label %17, label %16

12:                                               ; preds = %2
  %13 = landingpad { ptr, i32 }
          cleanup
  %14 = extractvalue { ptr, i32 } %13, 0
  store ptr %14, ptr %6, align 8
  %15 = extractvalue { ptr, i32 } %13, 1
  store i32 %15, ptr %7, align 4
  call void @_ZN5TokenD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %0) #2
  br label %18

16:                                               ; preds = %10
  call void @_ZN5TokenD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %0) #2
  br label %17

17:                                               ; preds = %16, %10
  ret void

18:                                               ; preds = %12
  %19 = load ptr, ptr %6, align 8
  %20 = load i32, ptr %7, align 4
  %21 = insertvalue { ptr, i32 } poison, ptr %19, 0
  %22 = insertvalue { ptr, i32 } %21, i32 %20, 1
  resume { ptr, i32 } %22
}

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 = { 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 #2 = { 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"}


; 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.Token = type { i32, %"class.std::__cxx11::basic_string", %"union.Token::Numbers" }
%"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] }
%"union.Token::Numbers" = type { %class.U128 }
%class.U128 = type { i64, i64 }

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN5Lexer7advanceEv(ptr noundef nonnull align 8 dereferenceable(680)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN5TokenD2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN5TokenC2EOS_(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN5Lexer7consumeEv(ptr dead_on_unwind noalias nonnull writable sret(%struct.Token) align 8 %0, ptr noundef nonnull align 8 dereferenceable(680) %1) local_unnamed_addr #0 align 2 personality ptr @__gxx_personality_v0 {
  %3 = getelementptr inbounds i8, ptr %1, i64 560
  tail call void @_ZN5TokenC2EOS_(ptr noundef nonnull align 8 dereferenceable(56) %0, ptr noundef nonnull align 8 dereferenceable(56) %3) #2
  invoke void @_ZN5Lexer7advanceEv(ptr noundef nonnull align 8 dereferenceable(680) %1)
          to label %6 unwind label %4

4:                                                ; preds = %2
  %5 = landingpad { ptr, i32 }
          cleanup
  tail call void @_ZN5TokenD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %0) #2
  resume { ptr, i32 } %5

6:                                                ; preds = %2
  ret void
}

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 = { 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 #2 = { 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,IPSCCPPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass