; LLVM IR from aap/librw :: src/gl/gl3raster.ll (ZN2rw3gl320getSizeNativeTextureEPNS_7TextureE)

; 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"

%"struct.rw::Texture" = type { ptr, ptr, %"struct.rw::LLLink", [32 x i8], [32 x i8], i32, i32, %"struct.rw::LLLink" }
%"struct.rw::LLLink" = type { 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 i32 @_ZN2rw3gl320getSizeNativeTextureEPNS_7TextureE(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 116, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds %"struct.rw::Texture", ptr %6, i32 0, i32 0
  %8 = load ptr, ptr %7, align 8, !tbaa !11
  %9 = call noundef i32 @_ZN2rw6Raster12getNumLevelsEv(ptr noundef nonnull align 8 dereferenceable(96) %8)
  store i32 %9, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %10

10:                                               ; preds = %24, %1
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = load i32, ptr %4, align 4, !tbaa !9
  %13 = icmp slt i32 %11, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  br label %27

15:                                               ; preds = %10
  %16 = load ptr, ptr %2, align 8, !tbaa !5
  %17 = getelementptr inbounds %"struct.rw::Texture", ptr %16, i32 0, i32 0
  %18 = load ptr, ptr %17, align 8, !tbaa !11
  %19 = load i32, ptr %5, align 4, !tbaa !9
  %20 = call noundef i32 @_ZN2rw3gl3L12getLevelSizeEPNS_6RasterEi(ptr noundef %18, i32 noundef %19)
  %21 = add i32 4, %20
  %22 = load i32, ptr %3, align 4, !tbaa !9
  %23 = add i32 %22, %21
  store i32 %23, ptr %3, align 4, !tbaa !9
  br label %24

24:                                               ; preds = %15
  %25 = load i32, ptr %5, align 4, !tbaa !9
  %26 = add nsw i32 %25, 1
  store i32 %26, ptr %5, align 4, !tbaa !9
  br label %10, !llvm.loop !14

27:                                               ; preds = %14
  %28 = load i32, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  ret i32 %28
}

; Function Attrs: mustprogress nounwind uwtable
declare hidden noundef i32 @_ZN2rw3gl3L12getLevelSizeEPNS_6RasterEi(ptr noundef, i32 noundef) #2

declare noundef i32 @_ZN2rw6Raster12getNumLevelsEv(ptr noundef nonnull align 8 dereferenceable(96)) #3

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 = { 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 = { "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 = !{!12, !6, i64 0}
!12 = !{!"_ZTSN2rw7TextureE", !6, i64 0, !6, i64 8, !13, i64 16, !7, i64 32, !7, i64 64, !10, i64 96, !10, i64 100, !13, i64 104}
!13 = !{!"_ZTSN2rw6LLLinkE", !6, i64 0, !6, i64 8}
!14 = distinct !{!14, !15}
!15 = !{!"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 i32 @_ZN2rw3gl320getSizeNativeTextureEPNS_7TextureE(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load ptr, ptr %0, align 8, !tbaa !5
  %3 = tail call noundef i32 @_ZN2rw6Raster12getNumLevelsEv(ptr noundef nonnull align 8 dereferenceable(96) %2)
  %4 = icmp sgt i32 %3, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %1
  %.07.lcssa = phi i32 [ 116, %1 ], [ %8, %.lr.ph ]
  ret i32 %.07.lcssa

.lr.ph:                                           ; preds = %1, %.lr.ph
  %.09 = phi i32 [ %9, %.lr.ph ], [ 0, %1 ]
  %.078 = phi i32 [ %8, %.lr.ph ], [ 116, %1 ]
  %5 = load ptr, ptr %0, align 8, !tbaa !5
  %6 = tail call noundef i32 @_ZN2rw3gl3L12getLevelSizeEPNS_6RasterEi(ptr noundef %5, i32 noundef %.09)
  %7 = add i32 %.078, 4
  %8 = add i32 %7, %6
  %9 = add nuw nsw i32 %.09, 1
  %exitcond.not = icmp eq i32 %9, %3
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !12
}

; Function Attrs: mustprogress nounwind uwtable
declare hidden noundef i32 @_ZN2rw3gl3L12getLevelSizeEPNS_6RasterEi(ptr noundef, i32 noundef) local_unnamed_addr #1

declare noundef i32 @_ZN2rw6Raster12getNumLevelsEv(ptr noundef nonnull align 8 dereferenceable(96)) local_unnamed_addr #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 = { 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 = { "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, !7, i64 0}
!6 = !{!"_ZTSN2rw7TextureE", !7, i64 0, !7, i64 8, !10, i64 16, !8, i64 32, !8, i64 64, !11, i64 96, !11, i64 100, !10, i64 104}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTSN2rw6LLLinkE", !7, i64 0, !7, i64 8}
!11 = !{!"int", !8, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass