; LLVM IR from mlcommons/tiny :: benchmark/interface/Application/IO/MemoryReader.ll (ZN2IO12MemoryReader8ReadDataEPvm)

; 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.IO::MemoryReader" = type { %class.IDataSource, %"class.std::__cxx11::basic_string", ptr, i64, i64 }
%class.IDataSource = type { ptr }
%"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 noundef i64 @_ZN2IO12MemoryReader8ReadDataEPvm(ptr noundef nonnull align 8 dereferenceable(64) %0, ptr noundef %1, i64 noundef %2) unnamed_addr #0 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  %7 = load ptr, ptr %4, align 8
  %8 = getelementptr inbounds %"class.IO::MemoryReader", ptr %7, i32 0, i32 3
  %9 = load i64, ptr %8, align 8, !tbaa !11
  %10 = getelementptr inbounds %"class.IO::MemoryReader", ptr %7, i32 0, i32 4
  %11 = load i64, ptr %10, align 8, !tbaa !16
  %12 = load i64, ptr %6, align 8, !tbaa !9
  %13 = add i64 %11, %12
  %14 = icmp ugt i64 %9, %13
  br i1 %14, label %15, label %17

15:                                               ; preds = %3
  %16 = load i64, ptr %6, align 8, !tbaa !9
  br label %23

17:                                               ; preds = %3
  %18 = getelementptr inbounds %"class.IO::MemoryReader", ptr %7, i32 0, i32 3
  %19 = load i64, ptr %18, align 8, !tbaa !11
  %20 = getelementptr inbounds %"class.IO::MemoryReader", ptr %7, i32 0, i32 4
  %21 = load i64, ptr %20, align 8, !tbaa !16
  %22 = sub i64 %19, %21
  br label %23

23:                                               ; preds = %17, %15
  %24 = phi i64 [ %16, %15 ], [ %22, %17 ]
  store i64 %24, ptr %6, align 8, !tbaa !9
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = getelementptr inbounds %"class.IO::MemoryReader", ptr %7, i32 0, i32 2
  %27 = load ptr, ptr %26, align 8, !tbaa !17
  %28 = getelementptr inbounds %"class.IO::MemoryReader", ptr %7, i32 0, i32 4
  %29 = load i64, ptr %28, align 8, !tbaa !16
  %30 = getelementptr inbounds i8, ptr %27, i64 %29
  %31 = load i64, ptr %6, align 8, !tbaa !9
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %25, ptr align 1 %30, i64 %31, i1 false)
  %32 = load i64, ptr %6, align 8, !tbaa !9
  %33 = getelementptr inbounds %"class.IO::MemoryReader", ptr %7, i32 0, i32 4
  %34 = load i64, ptr %33, align 8, !tbaa !16
  %35 = add i64 %34, %32
  store i64 %35, ptr %33, align 8, !tbaa !16
  %36 = load i64, ptr %6, align 8, !tbaa !9
  ret i64 %36
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, 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: readwrite) }

!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 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 48}
!12 = !{!"_ZTSN2IO12MemoryReaderE", !13, i64 0, !14, i64 8, !6, i64 40, !10, i64 48, !10, i64 56}
!13 = !{!"_ZTS11IDataSource"}
!14 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !15, i64 0, !10, i64 8, !7, i64 16}
!15 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !6, i64 0}
!16 = !{!12, !10, i64 56}
!17 = !{!12, !6, i64 40}


; 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(readwrite, inaccessiblemem: none) uwtable
define dso_local noundef i64 @_ZN2IO12MemoryReader8ReadDataEPvm(ptr nocapture noundef nonnull align 8 dereferenceable(64) %0, ptr nocapture noundef writeonly %1, i64 noundef %2) unnamed_addr #0 align 2 {
  %4 = getelementptr inbounds i8, ptr %0, i64 48
  %5 = load i64, ptr %4, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 56
  %7 = load i64, ptr %6, align 8, !tbaa !14
  %8 = add i64 %7, %2
  %9 = icmp ugt i64 %5, %8
  %10 = sub i64 %5, %7
  %11 = select i1 %9, i64 %2, i64 %10
  %12 = getelementptr inbounds i8, ptr %0, i64 40
  %13 = load ptr, ptr %12, align 8, !tbaa !15
  %14 = getelementptr inbounds i8, ptr %13, i64 %7
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 1 %1, ptr align 1 %14, i64 %11, i1 false)
  %15 = load i64, ptr %6, align 8, !tbaa !14
  %16 = add i64 %15, %11
  store i64 %16, ptr %6, align 8, !tbaa !14
  ret i64 %11
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, inaccessiblemem: none) 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 nocallback nofree nounwind willreturn memory(argmem: readwrite) }

!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, !13, i64 48}
!6 = !{!"_ZTSN2IO12MemoryReaderE", !7, i64 0, !8, i64 8, !10, i64 40, !13, i64 48, !13, i64 56}
!7 = !{!"_ZTS11IDataSource"}
!8 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE", !9, i64 0, !13, i64 8, !11, i64 16}
!9 = !{!"_ZTSNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE12_Alloc_hiderE", !10, i64 0}
!10 = !{!"any pointer", !11, i64 0}
!11 = !{!"omnipotent char", !12, i64 0}
!12 = !{!"Simple C++ TBAA"}
!13 = !{!"long", !11, i64 0}
!14 = !{!6, !13, i64 56}
!15 = !{!6, !10, i64 40}


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