; LLVM IR from tensorflow/tensorflow :: tensorflow/lite/delegates/xnnpack (file_util)

; 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.tflite::xnnpack::FileDescriptor" = type { i32 }

; 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 zeroext i1 @_ZNK6tflite7xnnpack14FileDescriptor5WriteEPKvm(ptr noundef nonnull align 4 dereferenceable(4) %0, ptr noundef %1, i64 noundef %2) #1 align 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 i64, align 8
  %10 = 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
  %11 = load ptr, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %12, ptr %8, align 8, !tbaa !5
  br label %13

13:                                               ; preds = %34, %3
  %14 = load i64, ptr %7, align 8, !tbaa !9
  %15 = icmp ugt i64 %14, 0
  br i1 %15, label %16, label %35

16:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %17 = getelementptr inbounds %"class.tflite::xnnpack::FileDescriptor", ptr %11, i32 0, i32 0
  %18 = load i32, ptr %17, align 4, !tbaa !11
  %19 = load ptr, ptr %8, align 8, !tbaa !5
  %20 = load i64, ptr %7, align 8, !tbaa !9
  %21 = call i64 @write(i32 noundef %18, ptr noundef %19, i64 noundef %20)
  store i64 %21, ptr %9, align 8, !tbaa !9
  %22 = load i64, ptr %9, align 8, !tbaa !9
  %23 = icmp eq i64 %22, -1
  br i1 %23, label %24, label %25

24:                                               ; preds = %16
  store i1 false, ptr %4, align 1
  store i32 1, ptr %10, align 4
  br label %32

25:                                               ; preds = %16
  %26 = load i64, ptr %9, align 8, !tbaa !9
  %27 = load i64, ptr %7, align 8, !tbaa !9
  %28 = sub i64 %27, %26
  store i64 %28, ptr %7, align 8, !tbaa !9
  %29 = load i64, ptr %9, align 8, !tbaa !9
  %30 = load ptr, ptr %8, align 8, !tbaa !5
  %31 = getelementptr inbounds i8, ptr %30, i64 %29
  store ptr %31, ptr %8, align 8, !tbaa !5
  store i32 0, ptr %10, align 4
  br label %32

32:                                               ; preds = %25, %24
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  %33 = load i32, ptr %10, align 4
  switch i32 %33, label %36 [
    i32 0, label %34
  ]

34:                                               ; preds = %32
  br label %13, !llvm.loop !14

35:                                               ; preds = %13
  store i1 true, ptr %4, align 1
  store i32 1, ptr %10, align 4
  br label %36

36:                                               ; preds = %35, %32
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  %37 = load i1, ptr %4, align 1
  ret i1 %37
}

declare i64 @write(i32 noundef, ptr noundef, i64 noundef) #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 = { "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}
!11 = !{!12, !13, i64 0}
!12 = !{!"_ZTSN6tflite7xnnpack14FileDescriptorE", !13, i64 0}
!13 = !{!"int", !7, i64 0}
!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 nofree uwtable
define dso_local noundef zeroext i1 @_ZNK6tflite7xnnpack14FileDescriptor5WriteEPKvm(ptr nocapture noundef nonnull readonly align 4 dereferenceable(4) %0, ptr nocapture noundef readonly %1, i64 noundef %2) local_unnamed_addr #0 align 2 {
  br label %4

4:                                                ; preds = %5, %3
  %.014 = phi i64 [ %2, %3 ], [ %8, %5 ]
  %.012 = phi ptr [ %1, %3 ], [ %9, %5 ]
  %.not = icmp eq i64 %.014, 0
  br i1 %.not, label %10, label %5

5:                                                ; preds = %4
  %6 = load i32, ptr %0, align 4, !tbaa !5
  %7 = tail call i64 @write(i32 noundef %6, ptr noundef %.012, i64 noundef %.014)
  %.not17 = icmp eq i64 %7, -1
  %8 = sub i64 %.014, %7
  %9 = getelementptr inbounds i8, ptr %.012, i64 %7
  br i1 %.not17, label %10, label %4, !llvm.loop !10

10:                                               ; preds = %4, %5
  ret i1 %.not
}

; Function Attrs: nofree
declare noundef i64 @write(i32 noundef, ptr nocapture noundef readonly, i64 noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nofree 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 = { nofree "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 = !{!"_ZTSN6tflite7xnnpack14FileDescriptorE", !7, i64 0}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass