; LLVM IR from NervanaSystems/ngraph :: doc/examples/mnist_mlp (mnist_loader)

; 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.MNistLoader = type { ptr, %"class.std::__cxx11::basic_string", ptr, i32, i32, %struct._G_fpos_t }
%"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] }
%struct._G_fpos_t = type { i64, %struct.__mbstate_t }
%struct.__mbstate_t = type { i32, %union.anon.0 }
%union.anon.0 = type { i32 }

@_ZTV11MNistLoader = external dso_local unnamed_addr constant { [5 x ptr] }, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11MNistLoaderC2ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEj(ptr noundef nonnull align 8 dereferenceable(72) %0, ptr noundef nonnull align 8 dereferenceable(32) %1, i32 noundef %2) unnamed_addr #0 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !9
  %7 = load ptr, ptr %4, align 8
  store ptr getelementptr inbounds inrange(-16, 24) ({ [5 x ptr] }, ptr @_ZTV11MNistLoader, i32 0, i32 0, i32 2), ptr %7, align 8, !tbaa !11
  %8 = getelementptr inbounds %class.MNistLoader, ptr %7, i32 0, i32 1
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %8, ptr noundef nonnull align 8 dereferenceable(32) %9)
  %10 = getelementptr inbounds %class.MNistLoader, ptr %7, i32 0, i32 2
  store ptr null, ptr %10, align 8, !tbaa !13
  %11 = getelementptr inbounds %class.MNistLoader, ptr %7, i32 0, i32 3
  %12 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %12, ptr %11, align 8, !tbaa !20
  %13 = getelementptr inbounds %class.MNistLoader, ptr %7, i32 0, i32 4
  store i32 0, ptr %13, align 4, !tbaa !21
  %14 = getelementptr inbounds %class.MNistLoader, ptr %7, i32 0, i32 5
  %15 = getelementptr inbounds %struct._G_fpos_t, ptr %14, i32 0, i32 0
  store i64 0, ptr %15, align 8, !tbaa !22
  %16 = getelementptr inbounds %struct._G_fpos_t, ptr %14, i32 0, i32 1
  %17 = getelementptr inbounds %struct.__mbstate_t, ptr %16, i32 0, i32 0
  store i32 0, ptr %17, align 8, !tbaa !23
  %18 = getelementptr inbounds %struct.__mbstate_t, ptr %16, i32 0, i32 1
  store i32 0, ptr %18, align 4, !tbaa !24
  ret void
}

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #0 align 2

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" }

!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, !12, i64 0}
!12 = !{!"vtable pointer", !8, i64 0}
!13 = !{!14, !6, i64 40}
!14 = !{!"_ZTS11MNistLoader", !15, i64 8, !6, i64 40, !10, i64 48, !10, i64 52, !18, i64 56}
!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 = !{!"_ZTS9_G_fpos_t", !17, i64 0, !19, i64 8}
!19 = !{!"_ZTS11__mbstate_t", !10, i64 0, !7, i64 4}
!20 = !{!14, !10, i64 48}
!21 = !{!14, !10, i64 52}
!22 = !{!18, !17, i64 0}
!23 = !{!19, !10, i64 0}
!24 = !{!7, !7, i64 0}


; 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"

@_ZTV11MNistLoader = external dso_local unnamed_addr constant { [5 x ptr] }, align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11MNistLoaderC2ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEj(ptr noundef nonnull align 8 dereferenceable(72) %0, ptr noundef nonnull align 8 dereferenceable(32) %1, i32 noundef %2) unnamed_addr #0 align 2 {
  store ptr getelementptr inbounds inrange(-16, 24) (i8, ptr @_ZTV11MNistLoader, i64 16), ptr %0, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  tail call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32) %4, ptr noundef nonnull align 8 dereferenceable(32) %1)
  %5 = getelementptr inbounds i8, ptr %0, i64 40
  store ptr null, ptr %5, align 8, !tbaa !8
  %6 = getelementptr inbounds i8, ptr %0, i64 48
  store i32 %2, ptr %6, align 8, !tbaa !18
  %7 = getelementptr inbounds i8, ptr %0, i64 52
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 4 dereferenceable(20) %7, i8 0, i64 20, i1 false)
  ret void
}

; Function Attrs: mustprogress uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2ERKS4_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #0 align 2

; 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 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, !6, i64 0}
!6 = !{!"vtable pointer", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !12, i64 40}
!9 = !{!"_ZTS11MNistLoader", !10, i64 8, !12, i64 40, !15, i64 48, !15, i64 52, !16, i64 56}
!10 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !11, i64 0, !14, i64 8, !13, i64 16}
!11 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !12, i64 0}
!12 = !{!"any pointer", !13, i64 0}
!13 = !{!"omnipotent char", !7, i64 0}
!14 = !{!"long", !13, i64 0}
!15 = !{!"int", !13, i64 0}
!16 = !{!"_ZTS9_G_fpos_t", !14, i64 0, !17, i64 8}
!17 = !{!"_ZTS11__mbstate_t", !15, i64 0, !13, i64 4}
!18 = !{!9, !15, i64 48}


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