; LLVM IR from niessner/Matterport :: code/gaps/pkgs/R3Graphics/R2Texture.ll (ZN9R2Texture11SetFilenameEPKc)

; 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.R2Texture = type <{ ptr, i32, [4 x i8], ptr, ptr, ptr, i32, i32, i32, i32, i32, [4 x i8], %class.RNFlags, i32, [4 x i8] }>
%class.RNFlags = type { i64 }

; Function Attrs: nounwind
declare noalias ptr @strdup(ptr noundef) #0

; Function Attrs: nounwind
declare void @free(ptr noundef) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN9R2Texture11SetFilenameEPKc(ptr noundef nonnull align 8 dereferenceable(76) %0, ptr noundef %1) #1 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 = getelementptr inbounds %class.R2Texture, ptr %5, i32 0, i32 4
  %7 = load ptr, ptr %6, align 8, !tbaa !9
  %8 = icmp ne ptr %7, null
  br i1 %8, label %9, label %12

9:                                                ; preds = %2
  %10 = getelementptr inbounds %class.R2Texture, ptr %5, i32 0, i32 4
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  call void @free(ptr noundef %11) #2
  br label %12

12:                                               ; preds = %9, %2
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = icmp ne ptr %13, null
  br i1 %14, label %15, label %19

15:                                               ; preds = %12
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = call noalias ptr @strdup(ptr noundef %16) #2
  %18 = getelementptr inbounds %class.R2Texture, ptr %5, i32 0, i32 4
  store ptr %17, ptr %18, align 8, !tbaa !9
  br label %21

19:                                               ; preds = %12
  %20 = getelementptr inbounds %class.R2Texture, ptr %5, i32 0, i32 4
  store ptr null, ptr %20, align 8, !tbaa !9
  br label %21

21:                                               ; preds = %19, %15
  ret void
}

attributes #0 = { nounwind "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 = { 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, !6, i64 24}
!10 = !{!"_ZTS9R2Texture", !6, i64 0, !11, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !12, i64 40, !12, i64 44, !13, i64 48, !13, i64 52, !14, i64 56, !15, i64 64, !11, i64 72}
!11 = !{!"int", !7, i64 0}
!12 = !{!"_ZTS13R2TextureWrap", !7, i64 0}
!13 = !{!"_ZTS15R2TextureFilter", !7, i64 0}
!14 = !{!"_ZTS14R2TextureBlend", !7, i64 0}
!15 = !{!"_ZTS7RNFlags", !16, i64 0}
!16 = !{!"long", !7, 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 nofree nounwind willreturn memory(argmem: readwrite, inaccessiblemem: readwrite)
declare noalias ptr @strdup(ptr nocapture noundef readonly) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind willreturn uwtable
define dso_local void @_ZN9R2Texture11SetFilenameEPKc(ptr nocapture noundef nonnull align 8 dereferenceable(76) %0, ptr noundef readonly %1) local_unnamed_addr #2 align 2 {
  %3 = getelementptr inbounds i8, ptr %0, i64 24
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %6, label %5

5:                                                ; preds = %2
  tail call void @free(ptr noundef nonnull %4) #3
  br label %6

6:                                                ; preds = %5, %2
  %.not4 = icmp eq ptr %1, null
  br i1 %.not4, label %9, label %7

7:                                                ; preds = %6
  %8 = tail call noalias ptr @strdup(ptr noundef nonnull %1) #3
  br label %9

9:                                                ; preds = %6, %7
  %storemerge = phi ptr [ %8, %7 ], [ null, %6 ]
  store ptr %storemerge, ptr %3, align 8, !tbaa !5
  ret void
}

attributes #0 = { mustprogress nofree nounwind willreturn memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 willreturn 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 = !{!6, !7, i64 24}
!6 = !{!"_ZTS9R2Texture", !7, i64 0, !10, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !11, i64 40, !11, i64 44, !12, i64 48, !12, i64 52, !13, i64 56, !14, i64 64, !10, i64 72}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"_ZTS13R2TextureWrap", !8, i64 0}
!12 = !{!"_ZTS15R2TextureFilter", !8, i64 0}
!13 = !{!"_ZTS14R2TextureBlend", !8, i64 0}
!14 = !{!"_ZTS7RNFlags", !15, i64 0}
!15 = !{!"long", !8, i64 0}


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