; LLVM IR from NVIDIA/tensorflow :: tensorflow/lite/experimental/micro/examples/micro_speech (feature_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"

%class.FeatureProvider = type <{ i32, [4 x i8], ptr, i8, [7 x i8] }>

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN15FeatureProviderC2EiPh(ptr noundef nonnull align 8 dereferenceable(17) %0, i32 noundef %1, ptr noundef %2) unnamed_addr #0 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  %8 = load ptr, ptr %4, align 8
  %9 = getelementptr inbounds %class.FeatureProvider, ptr %8, i32 0, i32 0
  %10 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %10, ptr %9, align 8, !tbaa !11
  %11 = getelementptr inbounds %class.FeatureProvider, ptr %8, i32 0, i32 2
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %12, ptr %11, align 8, !tbaa !14
  %13 = getelementptr inbounds %class.FeatureProvider, ptr %8, i32 0, i32 3
  store i8 1, ptr %13, align 8, !tbaa !15
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %26, %3
  %15 = load i32, ptr %7, align 4, !tbaa !9
  %16 = getelementptr inbounds %class.FeatureProvider, ptr %8, i32 0, i32 0
  %17 = load i32, ptr %16, align 8, !tbaa !11
  %18 = icmp slt i32 %15, %17
  br i1 %18, label %20, label %19

19:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %29

20:                                               ; preds = %14
  %21 = getelementptr inbounds %class.FeatureProvider, ptr %8, i32 0, i32 2
  %22 = load ptr, ptr %21, align 8, !tbaa !14
  %23 = load i32, ptr %7, align 4, !tbaa !9
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds i8, ptr %22, i64 %24
  store i8 0, ptr %25, align 1, !tbaa !16
  br label %26

26:                                               ; preds = %20
  %27 = load i32, ptr %7, align 4, !tbaa !9
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %7, align 4, !tbaa !9
  br label %14, !llvm.loop !17

29:                                               ; preds = %19
  ret void
}

; 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, !10, i64 0}
!12 = !{!"_ZTS15FeatureProvider", !10, i64 0, !6, i64 8, !13, i64 16}
!13 = !{!"bool", !7, i64 0}
!14 = !{!12, !6, i64 8}
!15 = !{!12, !13, i64 16}
!16 = !{!7, !7, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"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 norecurse nosync nounwind memory(write, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local void @_ZN15FeatureProviderC2EiPh(ptr nocapture noundef nonnull align 8 dereferenceable(17) %0, i32 noundef %1, ptr noundef %2) unnamed_addr #0 align 2 {
  store i32 %1, ptr %0, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  store ptr %2, ptr %4, align 8, !tbaa !12
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  store i8 1, ptr %5, align 8, !tbaa !13
  %6 = icmp sgt i32 %1, 0
  br i1 %6, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %3
  ret void

.lr.ph:                                           ; preds = %3, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %3 ]
  %7 = load ptr, ptr %4, align 8, !tbaa !12
  %8 = getelementptr inbounds i8, ptr %7, i64 %indvars.iv
  store i8 0, ptr %8, align 1, !tbaa !14
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %9 = load i32, ptr %0, align 8, !tbaa !5
  %10 = sext i32 %9 to i64
  %11 = icmp slt i64 %indvars.iv.next, %10
  br i1 %11, label %.lr.ph, label %._crit_edge, !llvm.loop !15
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(write, argmem: readwrite, 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" }

!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 = !{!"_ZTS15FeatureProvider", !7, i64 0, !10, i64 8, !11, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"bool", !8, i64 0}
!12 = !{!6, !10, i64 8}
!13 = !{!6, !11, i64 16}
!14 = !{!8, !8, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass