; LLVM IR from mncoppola/rpef :: utilities_src/squashfs4.2/lzma465/CPP/7zip/Common (OffsetStream)

; 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.COffsetOutStream = type { %struct.IOutStream, %class.CMyUnknownImp, i64, %class.CMyComPtr }
%struct.IOutStream = type { %struct.ISequentialOutStream }
%struct.ISequentialOutStream = type { %struct.IUnknown }
%struct.IUnknown = type { ptr }
%class.CMyUnknownImp = type { i32 }
%class.CMyComPtr = type { ptr }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK9CMyComPtrI10IOutStreamEptEv(ptr noundef nonnull align 8 dereferenceable(8)) #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN16COffsetOutStream4SeekExjPy(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %1, i32 noundef %2, ptr noundef %3) unnamed_addr #1 align 2 {
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i64, align 8
  %10 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i64 %1, ptr %6, align 8, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !11
  store ptr %3, ptr %8, align 8, !tbaa !5
  %11 = load ptr, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %12 = load i32, ptr %7, align 4, !tbaa !11
  %13 = icmp eq i32 %12, 0
  br i1 %13, label %14, label %19

14:                                               ; preds = %4
  %15 = getelementptr inbounds %class.COffsetOutStream, ptr %11, i32 0, i32 2
  %16 = load i64, ptr %15, align 8, !tbaa !13
  %17 = load i64, ptr %6, align 8, !tbaa !9
  %18 = add i64 %17, %16
  store i64 %18, ptr %6, align 8, !tbaa !9
  br label %19

19:                                               ; preds = %14, %4
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %20 = getelementptr inbounds %class.COffsetOutStream, ptr %11, i32 0, i32 3
  %21 = call noundef ptr @_ZNK9CMyComPtrI10IOutStreamEptEv(ptr noundef nonnull align 8 dereferenceable(8) %20)
  %22 = load i64, ptr %6, align 8, !tbaa !9
  %23 = load i32, ptr %7, align 4, !tbaa !11
  %24 = load ptr, ptr %21, align 8, !tbaa !20
  %25 = getelementptr inbounds ptr, ptr %24, i64 6
  %26 = load ptr, ptr %25, align 8
  %27 = call noundef i32 %26(ptr noundef nonnull align 8 dereferenceable(8) %21, i64 noundef %22, i32 noundef %23, ptr noundef %9)
  store i32 %27, ptr %10, align 4, !tbaa !11
  %28 = load ptr, ptr %8, align 8, !tbaa !5
  %29 = icmp ne ptr %28, null
  br i1 %29, label %30, label %36

30:                                               ; preds = %19
  %31 = load i64, ptr %9, align 8, !tbaa !9
  %32 = getelementptr inbounds %class.COffsetOutStream, ptr %11, i32 0, i32 2
  %33 = load i64, ptr %32, align 8, !tbaa !13
  %34 = sub i64 %31, %33
  %35 = load ptr, ptr %8, align 8, !tbaa !5
  store i64 %34, ptr %35, align 8, !tbaa !9
  br label %36

36:                                               ; preds = %30, %19
  %37 = load i32, ptr %10, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  ret i32 %37
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

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" }
attributes #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { nounwind }

!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 long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!14, !10, i64 16}
!14 = !{!"_ZTS16COffsetOutStream", !15, i64 0, !18, i64 8, !10, i64 16, !19, i64 24}
!15 = !{!"_ZTS10IOutStream", !16, i64 0}
!16 = !{!"_ZTS20ISequentialOutStream", !17, i64 0}
!17 = !{!"_ZTS8IUnknown"}
!18 = !{!"_ZTS13CMyUnknownImp", !12, i64 0}
!19 = !{!"_ZTS9CMyComPtrI10IOutStreamE", !6, i64 0}
!20 = !{!21, !21, i64 0}
!21 = !{!"vtable pointer", !8, 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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK9CMyComPtrI10IOutStreamEptEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN16COffsetOutStream4SeekExjPy(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef %1, i32 noundef %2, ptr noundef writeonly %3) unnamed_addr #1 align 2 {
  %5 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %5) #3
  %6 = icmp eq i32 %2, 0
  %7 = getelementptr inbounds i8, ptr %0, i64 16
  %8 = load i64, ptr %7, align 8
  %9 = select i1 %6, i64 %8, i64 0
  %.0 = add i64 %9, %1
  %10 = getelementptr inbounds i8, ptr %0, i64 24
  %11 = tail call noundef ptr @_ZNK9CMyComPtrI10IOutStreamEptEv(ptr noundef nonnull align 8 dereferenceable(8) %10)
  %12 = load ptr, ptr %11, align 8, !tbaa !5
  %13 = getelementptr inbounds i8, ptr %12, i64 48
  %14 = load ptr, ptr %13, align 8
  %15 = call noundef i32 %14(ptr noundef nonnull align 8 dereferenceable(8) %11, i64 noundef %.0, i32 noundef %2, ptr noundef nonnull %5)
  %.not = icmp eq ptr %3, null
  br i1 %.not, label %20, label %16

16:                                               ; preds = %4
  %17 = load i64, ptr %5, align 8, !tbaa !8
  %18 = load i64, ptr %7, align 8, !tbaa !11
  %19 = sub i64 %17, %18
  store i64 %19, ptr %3, align 8, !tbaa !8
  br label %20

20:                                               ; preds = %16, %4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %5) #3
  ret i32 %15
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

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" }
attributes #2 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { nounwind }

!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, !9, i64 0}
!9 = !{!"long long", !10, i64 0}
!10 = !{!"omnipotent char", !7, i64 0}
!11 = !{!12, !9, i64 16}
!12 = !{!"_ZTS16COffsetOutStream", !13, i64 0, !16, i64 8, !9, i64 16, !18, i64 24}
!13 = !{!"_ZTS10IOutStream", !14, i64 0}
!14 = !{!"_ZTS20ISequentialOutStream", !15, i64 0}
!15 = !{!"_ZTS8IUnknown"}
!16 = !{!"_ZTS13CMyUnknownImp", !17, i64 0}
!17 = !{!"int", !10, i64 0}
!18 = !{!"_ZTS9CMyComPtrI10IOutStreamE", !19, i64 0}
!19 = !{!"any pointer", !10, i64 0}


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