; LLVM IR from facebookresearch/habitat-sim :: src/deps/basis-universal/encoder/basisu_enc.ll (ZN6basisu18write_data_to_fileEPKcPKvm)

; 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"

@.str.14 = external hidden unnamed_addr constant [3 x i8], align 1

; 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

declare noalias ptr @fopen(ptr noundef, ptr noundef) #1

declare i32 @fclose(ptr noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_ZN6basisu18write_data_to_fileEPKcPKvm(ptr noundef %0, ptr noundef %1, i64 noundef %2) #2 {
  %4 = alloca i1, align 1
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store ptr null, ptr %8, align 8, !tbaa !5
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = call noalias ptr @fopen(ptr noundef %10, ptr noundef @.str.14)
  store ptr %11, ptr %8, align 8, !tbaa !5
  %12 = load ptr, ptr %8, align 8, !tbaa !5
  %13 = icmp ne ptr %12, null
  br i1 %13, label %15, label %14

14:                                               ; preds = %3
  store i1 false, ptr %4, align 1
  store i32 1, ptr %9, align 4
  br label %33

15:                                               ; preds = %3
  %16 = load i64, ptr %7, align 8, !tbaa !9
  %17 = icmp ne i64 %16, 0
  br i1 %17, label %18, label %29

18:                                               ; preds = %15
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = load i64, ptr %7, align 8, !tbaa !9
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  %22 = call i64 @fwrite(ptr noundef %19, i64 noundef 1, i64 noundef %20, ptr noundef %21)
  %23 = load i64, ptr %7, align 8, !tbaa !9
  %24 = icmp ne i64 %22, %23
  br i1 %24, label %25, label %28

25:                                               ; preds = %18
  %26 = load ptr, ptr %8, align 8, !tbaa !5
  %27 = call i32 @fclose(ptr noundef %26)
  store i1 false, ptr %4, align 1
  store i32 1, ptr %9, align 4
  br label %33

28:                                               ; preds = %18
  br label %29

29:                                               ; preds = %28, %15
  %30 = load ptr, ptr %8, align 8, !tbaa !5
  %31 = call i32 @fclose(ptr noundef %30)
  %32 = icmp ne i32 %31, -1
  store i1 %32, ptr %4, align 1
  store i32 1, ptr %9, align 4
  br label %33

33:                                               ; preds = %29, %25, %14
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  %34 = load i1, ptr %4, align 1
  ret i1 %34
}

declare i64 @fwrite(ptr noundef, i64 noundef, i64 noundef, ptr noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 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, !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", !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"

@.str.14 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: nofree nounwind
declare noalias noundef ptr @fopen(ptr nocapture noundef readonly, ptr nocapture noundef readonly) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @fclose(ptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local noundef zeroext i1 @_ZN6basisu18write_data_to_fileEPKcPKvm(ptr nocapture noundef readonly %0, ptr nocapture noundef %1, i64 noundef %2) local_unnamed_addr #1 {
  %4 = tail call noalias ptr @fopen(ptr noundef %0, ptr noundef nonnull @.str.14)
  %.not = icmp eq ptr %4, null
  br i1 %.not, label %13, label %5

5:                                                ; preds = %3
  %.not11 = icmp eq i64 %2, 0
  br i1 %.not11, label %10, label %6

6:                                                ; preds = %5
  %7 = tail call i64 @fwrite(ptr noundef %1, i64 noundef 1, i64 noundef %2, ptr noundef nonnull %4)
  %.not12 = icmp eq i64 %7, %2
  br i1 %.not12, label %10, label %8

8:                                                ; preds = %6
  %9 = tail call i32 @fclose(ptr noundef nonnull %4)
  br label %13

10:                                               ; preds = %6, %5
  %11 = tail call i32 @fclose(ptr noundef nonnull %4)
  %12 = icmp ne i32 %11, -1
  br label %13

13:                                               ; preds = %3, %10, %8
  %.0 = phi i1 [ false, %8 ], [ %12, %10 ], [ false, %3 ]
  ret i1 %.0
}

; Function Attrs: nofree nounwind
declare noundef i64 @fwrite(ptr nocapture noundef, i64 noundef, i64 noundef, ptr nocapture noundef) local_unnamed_addr #0

attributes #0 = { nofree 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 nofree 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)"}


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