; LLVM IR from Xiangyu-Hu/SPHinXsys :: src/shared/tools/tinyxml2.ll (ZN8tinyxml27StrPair10TransferToEPS0_)

; 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.tinyxml2::StrPair" = type { i32, ptr, ptr }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN8tinyxml27StrPair5ResetEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN8tinyxml27StrPair10TransferToEPS0_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %5 = load ptr, ptr %3, align 8
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = icmp eq ptr %5, %6
  br i1 %7, label %8, label %9

8:                                                ; preds = %2
  br label %34

9:                                                ; preds = %2
  br label %10

10:                                               ; preds = %9
  br label %11

11:                                               ; preds = %10
  br label %12

12:                                               ; preds = %11
  br label %13

13:                                               ; preds = %12
  br label %14

14:                                               ; preds = %13
  br label %15

15:                                               ; preds = %14
  br label %16

16:                                               ; preds = %15
  br label %17

17:                                               ; preds = %16
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  call void @_ZN8tinyxml27StrPair5ResetEv(ptr noundef nonnull align 8 dereferenceable(24) %18)
  %19 = getelementptr inbounds %"class.tinyxml2::StrPair", ptr %5, i32 0, i32 0
  %20 = load i32, ptr %19, align 8, !tbaa !9
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %"class.tinyxml2::StrPair", ptr %21, i32 0, i32 0
  store i32 %20, ptr %22, align 8, !tbaa !9
  %23 = getelementptr inbounds %"class.tinyxml2::StrPair", ptr %5, i32 0, i32 1
  %24 = load ptr, ptr %23, align 8, !tbaa !12
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %"class.tinyxml2::StrPair", ptr %25, i32 0, i32 1
  store ptr %24, ptr %26, align 8, !tbaa !12
  %27 = getelementptr inbounds %"class.tinyxml2::StrPair", ptr %5, i32 0, i32 2
  %28 = load ptr, ptr %27, align 8, !tbaa !13
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = getelementptr inbounds %"class.tinyxml2::StrPair", ptr %29, i32 0, i32 2
  store ptr %28, ptr %30, align 8, !tbaa !13
  %31 = getelementptr inbounds %"class.tinyxml2::StrPair", ptr %5, i32 0, i32 0
  store i32 0, ptr %31, align 8, !tbaa !9
  %32 = getelementptr inbounds %"class.tinyxml2::StrPair", ptr %5, i32 0, i32 1
  store ptr null, ptr %32, align 8, !tbaa !12
  %33 = getelementptr inbounds %"class.tinyxml2::StrPair", ptr %5, i32 0, i32 2
  store ptr null, ptr %33, align 8, !tbaa !13
  br label %34

34:                                               ; preds = %17, %8
  ret void
}

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 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" }

!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, !11, i64 0}
!10 = !{!"_ZTSN8tinyxml27StrPairE", !11, i64 0, !6, i64 8, !6, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !6, i64 8}
!13 = !{!10, !6, i64 16}


; 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 dso_local void @_ZN8tinyxml27StrPair5ResetEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN8tinyxml27StrPair10TransferToEPS0_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef %1) local_unnamed_addr #0 align 2 {
  %3 = icmp eq ptr %0, %1
  br i1 %3, label %9, label %4

4:                                                ; preds = %2
  tail call void @_ZN8tinyxml27StrPair5ResetEv(ptr noundef nonnull align 8 dereferenceable(24) %1)
  %5 = load i32, ptr %0, align 8, !tbaa !5
  store i32 %5, ptr %1, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  %7 = getelementptr inbounds i8, ptr %1, i64 8
  %8 = load <2 x ptr>, ptr %6, align 8, !tbaa !11
  store <2 x ptr> %8, ptr %7, align 8, !tbaa !11
  store i32 0, ptr %0, align 8, !tbaa !5
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %6, i8 0, i64 16, i1 false)
  br label %9

9:                                                ; preds = %2, %4
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

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 = { 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, !7, i64 0}
!6 = !{!"_ZTSN8tinyxml27StrPairE", !7, i64 0, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!10, !10, i64 0}


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