; LLVM IR from chrismile/cfd3d :: src/IO/BinaryStream.ll (ZN16BinaryReadStreamC2ER17BinaryWriteStream)

; 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.BinaryWriteStream = type { i64, i64, ptr }
%class.BinaryReadStream = type { i64, i64, ptr }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN16BinaryReadStreamC2ER17BinaryWriteStream(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1) unnamed_addr #0 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 = getelementptr inbounds %class.BinaryWriteStream, ptr %6, i32 0, i32 2
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  %9 = getelementptr inbounds %class.BinaryReadStream, ptr %5, i32 0, i32 2
  store ptr %8, ptr %9, align 8, !tbaa !12
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = getelementptr inbounds %class.BinaryWriteStream, ptr %10, i32 0, i32 0
  %12 = load i64, ptr %11, align 8, !tbaa !14
  %13 = getelementptr inbounds %class.BinaryReadStream, ptr %5, i32 0, i32 0
  store i64 %12, ptr %13, align 8, !tbaa !15
  %14 = getelementptr inbounds %class.BinaryReadStream, ptr %5, i32 0, i32 1
  store i64 0, ptr %14, align 8, !tbaa !16
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %class.BinaryWriteStream, ptr %15, i32 0, i32 2
  store ptr null, ptr %16, align 8, !tbaa !9
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %class.BinaryWriteStream, ptr %17, i32 0, i32 0
  store i64 0, ptr %18, align 8, !tbaa !14
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = getelementptr inbounds %class.BinaryWriteStream, ptr %19, i32 0, i32 1
  store i64 0, ptr %20, align 8, !tbaa !17
  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, !6, i64 16}
!10 = !{!"_ZTS17BinaryWriteStream", !11, i64 0, !11, i64 8, !6, i64 16}
!11 = !{!"long", !7, i64 0}
!12 = !{!13, !6, i64 16}
!13 = !{!"_ZTS16BinaryReadStream", !11, i64 0, !11, i64 8, !6, i64 16}
!14 = !{!10, !11, i64 0}
!15 = !{!13, !11, i64 0}
!16 = !{!13, !11, i64 8}
!17 = !{!10, !11, i64 8}


; 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 @_ZN16BinaryReadStreamC2ER17BinaryWriteStream(ptr nocapture noundef nonnull writeonly align 8 dereferenceable(24) %0, ptr nocapture noundef nonnull align 8 dereferenceable(24) %1) unnamed_addr #0 align 2 {
  %3 = getelementptr inbounds i8, ptr %1, i64 16
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  store ptr %4, ptr %5, align 8, !tbaa !11
  %6 = load i64, ptr %1, align 8, !tbaa !13
  store i64 %6, ptr %0, align 8, !tbaa !14
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  store i64 0, ptr %7, align 8, !tbaa !15
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %1, i8 0, i64 24, i1 false)
  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, !10, i64 16}
!6 = !{!"_ZTS17BinaryWriteStream", !7, i64 0, !7, i64 8, !10, i64 16}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!12, !10, i64 16}
!12 = !{!"_ZTS16BinaryReadStream", !7, i64 0, !7, i64 8, !10, i64 16}
!13 = !{!6, !7, i64 0}
!14 = !{!12, !7, i64 0}
!15 = !{!12, !7, i64 8}


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