; LLVM IR from tensorflow/tflite-micro :: signal/src (pcan_argc_fixed)

; 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"

; Function Attrs: mustprogress uwtable
declare dso_local noundef signext i16 @_ZN6tflite11tflm_signal19WideDynamicFunctionEjPKs(i32 noundef, ptr noundef) #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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN6tflite11tflm_signal10PcanShrinkEj(i32 noundef) #2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6tflite11tflm_signal29ApplyPcanAutoGainControlFixedEPKsiPKjPji(ptr noundef %0, i32 noundef %1, ptr noundef %2, ptr noundef %3, i32 noundef %4) #0 {
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i32 %1, ptr %7, align 4, !tbaa !9
  store ptr %2, ptr %8, align 8, !tbaa !5
  store ptr %3, ptr %9, align 8, !tbaa !5
  store i32 %4, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  store i32 0, ptr %11, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %46, %5
  %15 = load i32, ptr %11, align 4, !tbaa !9
  %16 = load i32, ptr %10, align 4, !tbaa !9
  %17 = icmp slt i32 %15, %16
  br i1 %17, label %18, label %49

18:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %19 = load ptr, ptr %8, align 8, !tbaa !5
  %20 = load i32, ptr %11, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds i32, ptr %19, i64 %21
  %23 = load i32, ptr %22, align 4, !tbaa !9
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  %25 = call noundef signext i16 @_ZN6tflite11tflm_signal19WideDynamicFunctionEjPKs(i32 noundef %23, ptr noundef %24)
  %26 = sext i16 %25 to i32
  store i32 %26, ptr %12, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #3
  %27 = load ptr, ptr %9, align 8, !tbaa !5
  %28 = load i32, ptr %11, align 4, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds i32, ptr %27, i64 %29
  %31 = load i32, ptr %30, align 4, !tbaa !9
  %32 = zext i32 %31 to i64
  %33 = load i32, ptr %12, align 4, !tbaa !9
  %34 = zext i32 %33 to i64
  %35 = mul i64 %32, %34
  %36 = load i32, ptr %7, align 4, !tbaa !9
  %37 = zext i32 %36 to i64
  %38 = lshr i64 %35, %37
  %39 = trunc i64 %38 to i32
  store i32 %39, ptr %13, align 4, !tbaa !9
  %40 = load i32, ptr %13, align 4, !tbaa !9
  %41 = call noundef i32 @_ZN6tflite11tflm_signal10PcanShrinkEj(i32 noundef %40)
  %42 = load ptr, ptr %9, align 8, !tbaa !5
  %43 = load i32, ptr %11, align 4, !tbaa !9
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds i32, ptr %42, i64 %44
  store i32 %41, ptr %45, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  br label %46

46:                                               ; preds = %18
  %47 = load i32, ptr %11, align 4, !tbaa !9
  %48 = add nsw i32 %47, 1
  store i32 %48, ptr %11, align 4, !tbaa !9
  br label %14, !llvm.loop !11

49:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  ret void
}

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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 uwtable
declare dso_local noundef signext i16 @_ZN6tflite11tflm_signal19WideDynamicFunctionEjPKs(i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_ZN6tflite11tflm_signal10PcanShrinkEj(i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN6tflite11tflm_signal29ApplyPcanAutoGainControlFixedEPKsiPKjPji(ptr noundef %0, i32 noundef %1, ptr nocapture noundef readonly %2, ptr nocapture noundef %3, i32 noundef %4) local_unnamed_addr #0 {
  %6 = icmp sgt i32 %4, 0
  br i1 %6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %5
  %7 = zext nneg i32 %1 to i64
  %wide.trip.count = zext nneg i32 %4 to i64
  br label %8

8:                                                ; preds = %.lr.ph, %8
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %8 ]
  %9 = getelementptr inbounds i32, ptr %2, i64 %indvars.iv
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = tail call noundef signext i16 @_ZN6tflite11tflm_signal19WideDynamicFunctionEjPKs(i32 noundef %10, ptr noundef %0)
  %12 = sext i16 %11 to i64
  %13 = getelementptr inbounds i32, ptr %3, i64 %indvars.iv
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = zext i32 %14 to i64
  %16 = and i64 %12, 4294967295
  %17 = mul nuw i64 %16, %15
  %18 = lshr i64 %17, %7
  %19 = trunc i64 %18 to i32
  %20 = tail call noundef i32 @_ZN6tflite11tflm_signal10PcanShrinkEj(i32 noundef %19)
  store i32 %20, ptr %13, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %8, !llvm.loop !9

._crit_edge:                                      ; preds = %8, %5
  ret void
}

attributes #0 = { 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 #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" }

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


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