; LLVM IR from HiroIshida/tinyfk :: urdf_parser/tinyxml/tinyxml.ll (ZNK17TiXmlAttributeSet4FindEPKc)

; 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.TiXmlAttributeSet = type { %class.TiXmlAttribute }
%class.TiXmlAttribute = type { %class.TiXmlBase, ptr, %"class.std::__cxx11::basic_string", %"class.std::__cxx11::basic_string", ptr, ptr }
%class.TiXmlBase = type { ptr, %struct.TiXmlCursor, ptr }
%struct.TiXmlCursor = type { i32, i32 }
%"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] }

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5c_strEv(ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

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

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strcmp(ptr noundef, ptr noundef) #2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef ptr @_ZNK17TiXmlAttributeSet4FindEPKc(ptr noundef nonnull align 8 dereferenceable(112) %0, ptr noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %9 = getelementptr inbounds %class.TiXmlAttributeSet, ptr %8, i32 0, i32 0
  %10 = getelementptr inbounds %class.TiXmlAttribute, ptr %9, i32 0, i32 5
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  store ptr %11, ptr %6, align 8, !tbaa !5
  br label %12

12:                                               ; preds = %27, %2
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = getelementptr inbounds %class.TiXmlAttributeSet, ptr %8, i32 0, i32 0
  %15 = icmp ne ptr %13, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %12
  store i32 2, ptr %7, align 4
  br label %31

17:                                               ; preds = %12
  %18 = load ptr, ptr %6, align 8, !tbaa !5
  %19 = getelementptr inbounds %class.TiXmlAttribute, ptr %18, i32 0, i32 2
  %20 = call noundef ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5c_strEv(ptr noundef nonnull align 8 dereferenceable(32) %19) #3
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = call i32 @strcmp(ptr noundef %20, ptr noundef %21) #4
  %23 = icmp eq i32 %22, 0
  br i1 %23, label %24, label %26

24:                                               ; preds = %17
  %25 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %25, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %31

26:                                               ; preds = %17
  br label %27

27:                                               ; preds = %26
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = getelementptr inbounds %class.TiXmlAttribute, ptr %28, i32 0, i32 5
  %30 = load ptr, ptr %29, align 8, !tbaa !18
  store ptr %30, ptr %6, align 8, !tbaa !5
  br label %12, !llvm.loop !19

31:                                               ; preds = %24, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %32 = load i32, ptr %7, align 4
  switch i32 %32, label %36 [
    i32 2, label %33
    i32 1, label %34
  ]

33:                                               ; preds = %31
  store ptr null, ptr %3, align 8
  br label %34

34:                                               ; preds = %33, %31
  %35 = load ptr, ptr %3, align 8
  ret ptr %35

36:                                               ; preds = %31
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 willreturn memory(read) "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 }
attributes #4 = { nounwind willreturn memory(read) }

!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 104}
!10 = !{!"_ZTS17TiXmlAttributeSet", !11, i64 0}
!11 = !{!"_ZTS14TiXmlAttribute", !12, i64 0, !6, i64 24, !15, i64 32, !15, i64 64, !6, i64 96, !6, i64 104}
!12 = !{!"_ZTS9TiXmlBase", !13, i64 8, !6, i64 16}
!13 = !{!"_ZTS11TiXmlCursor", !14, i64 0, !14, i64 4}
!14 = !{!"int", !7, i64 0}
!15 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !16, i64 0, !17, i64 8, !7, i64 16}
!16 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !6, i64 0}
!17 = !{!"long", !7, i64 0}
!18 = !{!11, !6, i64 104}
!19 = distinct !{!19, !20}
!20 = !{!"llvm.loop.mustprogress"}


; 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"

; Function Attrs: mustprogress nounwind uwtable
declare noundef ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5c_strEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i32 @strcmp(ptr nocapture noundef, ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef ptr @_ZNK17TiXmlAttributeSet4FindEPKc(ptr noundef nonnull readonly align 8 dereferenceable(112) %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 align 2 {
  br label %3

3:                                                ; preds = %4, %2
  %.pn = phi ptr [ %0, %2 ], [ %.07, %4 ]
  %.07.in = getelementptr inbounds i8, ptr %.pn, i64 104
  %.07 = load ptr, ptr %.07.in, align 8, !tbaa !5
  %.not = icmp eq ptr %.07, %0
  br i1 %.not, label %9, label %4

4:                                                ; preds = %3
  %5 = getelementptr inbounds i8, ptr %.07, i64 32
  %6 = tail call noundef ptr @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE5c_strEv(ptr noundef nonnull align 8 dereferenceable(32) %5) #2
  %7 = tail call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %6, ptr noundef nonnull dereferenceable(1) %1) #3
  %8 = icmp eq i32 %7, 0
  br i1 %8, label %9, label %3, !llvm.loop !16

9:                                                ; preds = %4, %3
  %spec.select = phi ptr [ null, %3 ], [ %.07, %4 ]
  ret ptr %spec.select
}

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 nofree nounwind willreturn memory(argmem: read) "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 }
attributes #3 = { nounwind willreturn memory(read) }

!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, !12, i64 104}
!6 = !{!"_ZTS14TiXmlAttribute", !7, i64 0, !12, i64 24, !13, i64 32, !13, i64 64, !12, i64 96, !12, i64 104}
!7 = !{!"_ZTS9TiXmlBase", !8, i64 8, !12, i64 16}
!8 = !{!"_ZTS11TiXmlCursor", !9, i64 0, !9, i64 4}
!9 = !{!"int", !10, i64 0}
!10 = !{!"omnipotent char", !11, i64 0}
!11 = !{!"Simple C++ TBAA"}
!12 = !{!"any pointer", !10, i64 0}
!13 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !14, i64 0, !15, i64 8, !10, i64 16}
!14 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !12, i64 0}
!15 = !{!"long", !10, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}


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