; LLVM IR from filipwasil/fillwave :: ext/nv_helpers_gl/nv_dds.ll (ZN6nv_dds8CTextureaSERKS0_)

; 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.nv_dds::CTexture" = type { %"class.nv_dds::CSurface", %"class.std::deque.0" }
%"class.nv_dds::CSurface" = type { ptr, i32, i32, i32, i32, ptr }
%"class.std::deque.0" = type { %"class.std::_Deque_base.1" }
%"class.std::_Deque_base.1" = type { %"struct.std::_Deque_base<nv_dds::CSurface, std::allocator<nv_dds::CSurface>>::_Deque_impl" }
%"struct.std::_Deque_base<nv_dds::CSurface, std::allocator<nv_dds::CSurface>>::_Deque_impl" = type { %"struct.std::_Deque_base<nv_dds::CSurface, std::allocator<nv_dds::CSurface>>::_Deque_impl_data" }
%"struct.std::_Deque_base<nv_dds::CSurface, std::allocator<nv_dds::CSurface>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator.5", %"struct.std::_Deque_iterator.5" }
%"struct.std::_Deque_iterator.5" = type { ptr, ptr, ptr, ptr }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull align 8 dereferenceable(112) ptr @_ZN6nv_dds8CTextureaSERKS0_(ptr noundef nonnull align 8 dereferenceable(112) %0, ptr noundef nonnull align 8 dereferenceable(112) %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = icmp ne ptr %6, %7
  br i1 %8, label %9, label %28

9:                                                ; preds = %2
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZN6nv_dds8CSurfaceaSERKS0_(ptr noundef nonnull align 8 dereferenceable(32) %6, ptr noundef nonnull align 8 dereferenceable(32) %10)
  %12 = getelementptr inbounds %"class.nv_dds::CTexture", ptr %6, i32 0, i32 1
  call void @_ZNSt5dequeIN6nv_dds8CSurfaceESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(80) %12) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %13

13:                                               ; preds = %24, %9
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = call noundef i32 @_ZNK6nv_dds8CTexture15get_num_mipmapsEv(ptr noundef nonnull align 8 dereferenceable(112) %15)
  %17 = icmp ult i32 %14, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  br label %27

19:                                               ; preds = %13
  %20 = getelementptr inbounds %"class.nv_dds::CTexture", ptr %6, i32 0, i32 1
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = load i32, ptr %5, align 4, !tbaa !9
  %23 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNK6nv_dds8CTexture10get_mipmapEj(ptr noundef nonnull align 8 dereferenceable(112) %21, i32 noundef %22)
  call void @_ZNSt5dequeIN6nv_dds8CSurfaceESaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(80) %20, ptr noundef nonnull align 8 dereferenceable(32) %23)
  br label %24

24:                                               ; preds = %19
  %25 = load i32, ptr %5, align 4, !tbaa !9
  %26 = add i32 %25, 1
  store i32 %26, ptr %5, align 4, !tbaa !9
  br label %13, !llvm.loop !11

27:                                               ; preds = %18
  br label %28

28:                                               ; preds = %27, %2
  ret ptr %6
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZNK6nv_dds8CTexture15get_num_mipmapsEv(ptr noundef nonnull align 8 dereferenceable(112)) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(32) ptr @_ZNK6nv_dds8CTexture10get_mipmapEj(ptr noundef nonnull align 8 dereferenceable(112), i32 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5dequeIN6nv_dds8CSurfaceESaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(32) ptr @_ZN6nv_dds8CSurfaceaSERKS0_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5dequeIN6nv_dds8CSurfaceESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(80)) #3 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { inlinehint 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 #3 = { 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 #4 = { 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 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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 uwtable
define dso_local noundef nonnull align 8 dereferenceable(112) ptr @_ZN6nv_dds8CTextureaSERKS0_(ptr noundef nonnull returned align 8 dereferenceable(112) %0, ptr noundef nonnull align 8 dereferenceable(112) %1) local_unnamed_addr #0 align 2 {
  %.not = icmp eq ptr %0, %1
  br i1 %.not, label %.loopexit, label %3

3:                                                ; preds = %2
  %4 = tail call noundef nonnull align 8 dereferenceable(32) ptr @_ZN6nv_dds8CSurfaceaSERKS0_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull align 8 dereferenceable(32) %1)
  %5 = getelementptr inbounds i8, ptr %0, i64 32
  tail call void @_ZNSt5dequeIN6nv_dds8CSurfaceESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(80) %5) #3
  %6 = tail call noundef i32 @_ZNK6nv_dds8CTexture15get_num_mipmapsEv(ptr noundef nonnull align 8 dereferenceable(112) %1)
  %.not10 = icmp eq i32 %6, 0
  br i1 %.not10, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.09 = phi i32 [ %8, %.lr.ph ], [ 0, %3 ]
  %7 = tail call noundef nonnull align 8 dereferenceable(32) ptr @_ZNK6nv_dds8CTexture10get_mipmapEj(ptr noundef nonnull align 8 dereferenceable(112) %1, i32 noundef %.09)
  tail call void @_ZNSt5dequeIN6nv_dds8CSurfaceESaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(80) %5, ptr noundef nonnull align 8 dereferenceable(32) %7)
  %8 = add nuw i32 %.09, 1
  %9 = tail call noundef i32 @_ZNK6nv_dds8CTexture15get_num_mipmapsEv(ptr noundef nonnull align 8 dereferenceable(112) %1)
  %10 = icmp ult i32 %8, %9
  br i1 %10, label %.lr.ph, label %.loopexit, !llvm.loop !5

.loopexit:                                        ; preds = %.lr.ph, %3, %2
  ret ptr %0
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZNK6nv_dds8CTexture15get_num_mipmapsEv(ptr noundef nonnull align 8 dereferenceable(112)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(32) ptr @_ZNK6nv_dds8CTexture10get_mipmapEj(ptr noundef nonnull align 8 dereferenceable(112), i32 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5dequeIN6nv_dds8CSurfaceESaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef nonnull align 8 dereferenceable(32) ptr @_ZN6nv_dds8CSurfaceaSERKS0_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5dequeIN6nv_dds8CSurfaceESaIS1_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 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" }
attributes #1 = { inlinehint 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 #2 = { 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 #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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass