; LLVM IR from NVIDIA/tensorflow :: tensorflow/lite/experimental/micro/examples/micro_speech (audio_provider)

; 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"

@_ZN12_GLOBAL__N_118g_dummy_audio_dataE = external hidden global [512 x i16], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z15GetAudioSamplesPN6tflite13ErrorReporterEiiPiPPs(ptr noundef %0, i32 noundef %1, i32 noundef %2, ptr noundef %3, ptr noundef %4) #0 {
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i32 %1, ptr %7, align 4, !tbaa !9
  store i32 %2, ptr %8, align 4, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !5
  store ptr %4, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  store i32 0, ptr %11, align 4, !tbaa !9
  br label %12

12:                                               ; preds = %20, %5
  %13 = load i32, ptr %11, align 4, !tbaa !9
  %14 = icmp slt i32 %13, 512
  br i1 %14, label %16, label %15

15:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  br label %23

16:                                               ; preds = %12
  %17 = load i32, ptr %11, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [512 x i16], ptr @_ZN12_GLOBAL__N_118g_dummy_audio_dataE, i64 0, i64 %18
  store i16 0, ptr %19, align 2, !tbaa !11
  br label %20

20:                                               ; preds = %16
  %21 = load i32, ptr %11, align 4, !tbaa !9
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %11, align 4, !tbaa !9
  br label %12, !llvm.loop !13

23:                                               ; preds = %15
  %24 = load ptr, ptr %9, align 8, !tbaa !5
  store i32 512, ptr %24, align 4, !tbaa !9
  %25 = load ptr, ptr %10, align 8, !tbaa !5
  store ptr @_ZN12_GLOBAL__N_118g_dummy_audio_dataE, ptr %25, align 8, !tbaa !5
  ret i32 0
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"short", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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"

@_ZN12_GLOBAL__N_118g_dummy_audio_dataE = external hidden global [512 x i16], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write, inaccessiblemem: none) uwtable
define dso_local noundef i32 @_Z15GetAudioSamplesPN6tflite13ErrorReporterEiiPiPPs(ptr nocapture noundef readnone %0, i32 noundef %1, i32 noundef %2, ptr nocapture noundef writeonly %3, ptr nocapture noundef writeonly %4) local_unnamed_addr #0 {
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 16 dereferenceable(1024) @_ZN12_GLOBAL__N_118g_dummy_audio_dataE, i8 0, i64 1024, i1 false), !tbaa !5
  store i32 512, ptr %3, align 4, !tbaa !9
  store ptr @_ZN12_GLOBAL__N_118g_dummy_audio_dataE, ptr %4, align 8, !tbaa !11
  ret i32 0
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(write, inaccessiblemem: none) 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 = { nocallback nofree nounwind willreturn memory(argmem: write) }

!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 = !{!"short", !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, !12, i64 0}
!12 = !{!"any pointer", !7, i64 0}


; Effective O3 passes: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopIdiomRecognizePass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass