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

; 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"

%"struct.tflite::tflm_signal::CircularBuffer" = type { i64, i64, i64, i32, i32, ptr }

@.str.1 = external hidden unnamed_addr constant [87 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [25 x i8], align 1
@__PRETTY_FUNCTION__._ZN6tflite11tflm_signal20CircularBufferRemoveEPNS0_14CircularBufferE = external hidden unnamed_addr constant [81 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, 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 zeroext i1 @_ZN6tflite11tflm_signal19CircularBufferEmptyEPKNS0_14CircularBufferE(ptr noundef) #2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef signext i16 @_ZN6tflite11tflm_signal20CircularBufferRemoveEPNS0_14CircularBufferE(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca i16, align 2
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = call noundef zeroext i1 @_ZN6tflite11tflm_signal19CircularBufferEmptyEPKNS0_14CircularBufferE(ptr noundef %4)
  %6 = xor i1 %5, true
  br i1 %6, label %7, label %8

7:                                                ; preds = %1
  br label %10

8:                                                ; preds = %1
  call void @__assert_fail(ptr noundef @.str.7, ptr noundef @.str.1, i32 noundef 187, ptr noundef @__PRETTY_FUNCTION__._ZN6tflite11tflm_signal20CircularBufferRemoveEPNS0_14CircularBufferE) #3
  unreachable

9:                                                ; No predecessors!
  br label %10

10:                                               ; preds = %9, %7
  call void @llvm.lifetime.start.p0(i64 2, ptr %3) #4
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %11, i32 0, i32 5
  %13 = load ptr, ptr %12, align 8, !tbaa !9
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %14, i32 0, i32 1
  %16 = load i64, ptr %15, align 8, !tbaa !13
  %17 = getelementptr inbounds i16, ptr %13, i64 %16
  %18 = load i16, ptr %17, align 2, !tbaa !14
  store i16 %18, ptr %3, align 2, !tbaa !14
  %19 = load ptr, ptr %2, align 8, !tbaa !5
  %20 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %19, i32 0, i32 1
  %21 = load i64, ptr %20, align 8, !tbaa !13
  %22 = add i64 %21, 1
  store i64 %22, ptr %20, align 8, !tbaa !13
  %23 = load ptr, ptr %2, align 8, !tbaa !5
  %24 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %23, i32 0, i32 0
  %25 = load i64, ptr %24, align 8, !tbaa !16
  %26 = icmp eq i64 %22, %25
  br i1 %26, label %27, label %30

27:                                               ; preds = %10
  %28 = load ptr, ptr %2, align 8, !tbaa !5
  %29 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %28, i32 0, i32 1
  store i64 0, ptr %29, align 8, !tbaa !13
  br label %30

30:                                               ; preds = %27, %10
  %31 = load ptr, ptr %2, align 8, !tbaa !5
  %32 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %31, i32 0, i32 1
  %33 = load i64, ptr %32, align 8, !tbaa !13
  %34 = load ptr, ptr %2, align 8, !tbaa !5
  %35 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %34, i32 0, i32 2
  %36 = load i64, ptr %35, align 8, !tbaa !17
  %37 = icmp eq i64 %33, %36
  br i1 %37, label %38, label %41

38:                                               ; preds = %30
  %39 = load ptr, ptr %2, align 8, !tbaa !5
  %40 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %39, i32 0, i32 3
  store i32 1, ptr %40, align 8, !tbaa !18
  br label %41

41:                                               ; preds = %38, %30
  %42 = load i16, ptr %3, align 2, !tbaa !14
  call void @llvm.lifetime.end.p0(i64 2, ptr %3) #4
  ret i16 %42
}

attributes #0 = { noreturn 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 = { 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 = { noreturn nounwind }
attributes #4 = { 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, !6, i64 32}
!10 = !{!"_ZTSN6tflite11tflm_signal14CircularBufferE", !11, i64 0, !11, i64 8, !11, i64 16, !12, i64 24, !12, i64 28, !6, i64 32}
!11 = !{!"long", !7, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!10, !11, i64 8}
!14 = !{!15, !15, i64 0}
!15 = !{!"short", !7, i64 0}
!16 = !{!10, !11, i64 0}
!17 = !{!10, !11, i64 16}
!18 = !{!10, !12, i64 24}


; 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.1 = external hidden unnamed_addr constant [87 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [25 x i8], align 1
@__PRETTY_FUNCTION__._ZN6tflite11tflm_signal20CircularBufferRemoveEPNS0_14CircularBufferE = external hidden unnamed_addr constant [81 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN6tflite11tflm_signal19CircularBufferEmptyEPKNS0_14CircularBufferE(ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef signext i16 @_ZN6tflite11tflm_signal20CircularBufferRemoveEPNS0_14CircularBufferE(ptr noundef %0) local_unnamed_addr #1 {
  %2 = tail call noundef zeroext i1 @_ZN6tflite11tflm_signal19CircularBufferEmptyEPKNS0_14CircularBufferE(ptr noundef %0)
  br i1 %2, label %3, label %4

3:                                                ; preds = %1
  tail call void @__assert_fail(ptr noundef nonnull @.str.7, ptr noundef nonnull @.str.1, i32 noundef 187, ptr noundef nonnull @__PRETTY_FUNCTION__._ZN6tflite11tflm_signal20CircularBufferRemoveEPNS0_14CircularBufferE) #2
  unreachable

4:                                                ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 32
  %6 = load ptr, ptr %5, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load i64, ptr %7, align 8, !tbaa !12
  %9 = getelementptr inbounds i16, ptr %6, i64 %8
  %10 = load i16, ptr %9, align 2, !tbaa !13
  %11 = add i64 %8, 1
  %12 = load i64, ptr %0, align 8, !tbaa !15
  %13 = icmp eq i64 %11, %12
  %spec.store.select = select i1 %13, i64 0, i64 %11
  store i64 %spec.store.select, ptr %7, align 8
  %14 = getelementptr inbounds i8, ptr %0, i64 16
  %15 = load i64, ptr %14, align 8, !tbaa !16
  %16 = icmp eq i64 %spec.store.select, %15
  br i1 %16, label %17, label %19

17:                                               ; preds = %4
  %18 = getelementptr inbounds i8, ptr %0, i64 24
  store i32 1, ptr %18, align 8, !tbaa !17
  br label %19

19:                                               ; preds = %17, %4
  ret i16 %10
}

attributes #0 = { noreturn 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 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 #2 = { noreturn 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, !11, i64 32}
!6 = !{!"_ZTSN6tflite11tflm_signal14CircularBufferE", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24, !10, i64 28, !11, i64 32}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!6, !7, i64 8}
!13 = !{!14, !14, i64 0}
!14 = !{!"short", !8, i64 0}
!15 = !{!6, !7, i64 0}
!16 = !{!6, !7, i64 16}
!17 = !{!6, !10, i64 24}


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