; LLVM IR from steps3d/graphics-book :: Code/Core/Data.ll (ZN4DataC2EPNS_10SharedBitsEii)

; 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.Data = type { ptr, ptr, i32, i32 }
%"struct.Data::SharedBits" = type <{ ptr, i32, [4 x i8], %"class.std::__cxx11::basic_string", i32, [4 x i8] }>
%"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: mustprogress nounwind uwtable
define dso_local void @_ZN4DataC2EPNS_10SharedBitsEii(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef %1, i32 noundef %2, i32 noundef %3) unnamed_addr #0 align 2 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  store i32 %3, ptr %8, align 4, !tbaa !9
  %9 = load ptr, ptr %5, align 8
  %10 = getelementptr inbounds %class.Data, ptr %9, i32 0, i32 0
  store ptr null, ptr %10, align 8, !tbaa !11
  %11 = getelementptr inbounds %class.Data, ptr %9, i32 0, i32 1
  store ptr null, ptr %11, align 8, !tbaa !13
  %12 = getelementptr inbounds %class.Data, ptr %9, i32 0, i32 2
  store i32 0, ptr %12, align 8, !tbaa !14
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = getelementptr inbounds %class.Data, ptr %9, i32 0, i32 0
  store ptr %13, ptr %14, align 8, !tbaa !11
  %15 = load i32, ptr %7, align 4, !tbaa !9
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  %17 = getelementptr inbounds %"struct.Data::SharedBits", ptr %16, i32 0, i32 0
  %18 = load ptr, ptr %17, align 8, !tbaa !15
  %19 = sext i32 %15 to i64
  %20 = getelementptr inbounds i8, ptr %18, i64 %19
  %21 = getelementptr inbounds %class.Data, ptr %9, i32 0, i32 1
  store ptr %20, ptr %21, align 8, !tbaa !13
  %22 = load i32, ptr %8, align 4, !tbaa !9
  %23 = getelementptr inbounds %class.Data, ptr %9, i32 0, i32 2
  store i32 %22, ptr %23, align 8, !tbaa !14
  %24 = getelementptr inbounds %class.Data, ptr %9, i32 0, i32 3
  store i32 0, ptr %24, align 4, !tbaa !20
  %25 = getelementptr inbounds %class.Data, ptr %9, i32 0, i32 0
  %26 = load ptr, ptr %25, align 8, !tbaa !11
  %27 = getelementptr inbounds %"struct.Data::SharedBits", ptr %26, i32 0, i32 4
  %28 = load i32, ptr %27, align 8, !tbaa !21
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %27, align 8, !tbaa !21
  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" }

!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 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"_ZTS4Data", !6, i64 0, !6, i64 8, !10, i64 16, !10, i64 20}
!13 = !{!12, !6, i64 8}
!14 = !{!12, !10, i64 16}
!15 = !{!16, !6, i64 0}
!16 = !{!"_ZTSN4Data10SharedBitsE", !6, i64 0, !10, i64 8, !17, i64 16, !10, i64 48}
!17 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !18, i64 0, !19, i64 8, !7, i64 16}
!18 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !6, i64 0}
!19 = !{!"long", !7, i64 0}
!20 = !{!12, !10, i64 20}
!21 = !{!16, !10, i64 48}


; 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 nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local void @_ZN4DataC2EPNS_10SharedBitsEii(ptr nocapture noundef nonnull writeonly align 8 dereferenceable(24) %0, ptr noundef %1, i32 noundef %2, i32 noundef %3) unnamed_addr #0 align 2 {
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  %6 = getelementptr inbounds i8, ptr %0, i64 16
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(12) %7, i8 0, i64 12, i1 false)
  store ptr %1, ptr %0, align 8, !tbaa !5
  %8 = load ptr, ptr %1, align 8, !tbaa !11
  %9 = sext i32 %2 to i64
  %10 = getelementptr inbounds i8, ptr %8, i64 %9
  store ptr %10, ptr %5, align 8, !tbaa !16
  store i32 %3, ptr %6, align 8, !tbaa !17
  %11 = getelementptr inbounds i8, ptr %0, i64 20
  store i32 0, ptr %11, align 4, !tbaa !18
  %12 = getelementptr inbounds i8, ptr %1, i64 48
  %13 = load i32, ptr %12, align 8, !tbaa !19
  %14 = add nsw i32 %13, 1
  store i32 %14, ptr %12, align 8, !tbaa !19
  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 nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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 = !{!"_ZTS4Data", !7, i64 0, !7, i64 8, !10, i64 16, !10, i64 20}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!12, !7, i64 0}
!12 = !{!"_ZTSN4Data10SharedBitsE", !7, i64 0, !10, i64 8, !13, i64 16, !10, i64 48}
!13 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !14, i64 0, !15, i64 8, !8, i64 16}
!14 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !7, i64 0}
!15 = !{!"long", !8, i64 0}
!16 = !{!6, !7, i64 8}
!17 = !{!6, !10, i64 16}
!18 = !{!6, !10, i64 20}
!19 = !{!12, !10, i64 48}


; Effective O3 passes: DSEPass,EarlyCSEPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass