; 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.4 = external hidden unnamed_addr constant [30 x i8], align 1
@__PRETTY_FUNCTION__._ZN6tflite11tflm_signal29CircularBufferReserveForWriteEPNS0_14CircularBufferEm = external hidden unnamed_addr constant [99 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
define dso_local noundef ptr @_ZN6tflite11tflm_signal29CircularBufferReserveForWriteEPNS0_14CircularBufferEm(ptr noundef %0, i64 noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !9
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %6, i32 0, i32 2
  %8 = load i64, ptr %7, align 8, !tbaa !11
  %9 = load i64, ptr %4, align 8, !tbaa !9
  %10 = add i64 %8, %9
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %11, i32 0, i32 0
  %13 = load i64, ptr %12, align 8, !tbaa !14
  %14 = icmp ule i64 %10, %13
  br i1 %14, label %15, label %16

15:                                               ; preds = %2
  br label %18

16:                                               ; preds = %2
  call void @__assert_fail(ptr noundef @.str.4, ptr noundef @.str.1, i32 noundef 147, ptr noundef @__PRETTY_FUNCTION__._ZN6tflite11tflm_signal29CircularBufferReserveForWriteEPNS0_14CircularBufferEm) #3
  unreachable

17:                                               ; No predecessors!
  br label %18

18:                                               ; preds = %17, %15
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %19, i32 0, i32 5
  %21 = load ptr, ptr %20, align 8, !tbaa !15
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %22, i32 0, i32 2
  %24 = load i64, ptr %23, align 8, !tbaa !11
  %25 = getelementptr inbounds i16, ptr %21, i64 %24
  store ptr %25, ptr %5, align 8, !tbaa !5
  %26 = load i64, ptr %4, align 8, !tbaa !9
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %27, i32 0, i32 2
  %29 = load i64, ptr %28, align 8, !tbaa !11
  %30 = add i64 %29, %26
  store i64 %30, ptr %28, align 8, !tbaa !11
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %31, i32 0, i32 2
  %33 = load i64, ptr %32, align 8, !tbaa !11
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  %35 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %34, i32 0, i32 0
  %36 = load i64, ptr %35, align 8, !tbaa !14
  %37 = icmp eq i64 %33, %36
  br i1 %37, label %38, label %41

38:                                               ; preds = %18
  %39 = load ptr, ptr %3, align 8, !tbaa !5
  %40 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %39, i32 0, i32 2
  store i64 0, ptr %40, align 8, !tbaa !11
  br label %41

41:                                               ; preds = %38, %18
  %42 = load ptr, ptr %3, align 8, !tbaa !5
  %43 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %42, i32 0, i32 3
  %44 = load i32, ptr %43, align 8, !tbaa !16
  %45 = icmp ne i32 %44, 0
  br i1 %45, label %46, label %49

46:                                               ; preds = %41
  %47 = load i64, ptr %4, align 8, !tbaa !9
  %48 = icmp eq i64 %47, 0
  br label %49

49:                                               ; preds = %46, %41
  %50 = phi i1 [ false, %41 ], [ %48, %46 ]
  %51 = zext i1 %50 to i32
  %52 = load ptr, ptr %3, align 8, !tbaa !5
  %53 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %52, i32 0, i32 3
  store i32 %51, ptr %53, align 8, !tbaa !16
  %54 = load ptr, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  ret ptr %54
}

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, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 16}
!12 = !{!"_ZTSN6tflite11tflm_signal14CircularBufferE", !10, i64 0, !10, i64 8, !10, i64 16, !13, i64 24, !13, i64 28, !6, i64 32}
!13 = !{!"int", !7, i64 0}
!14 = !{!12, !10, i64 0}
!15 = !{!12, !6, i64 32}
!16 = !{!12, !13, 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.4 = external hidden unnamed_addr constant [30 x i8], align 1
@__PRETTY_FUNCTION__._ZN6tflite11tflm_signal29CircularBufferReserveForWriteEPNS0_14CircularBufferEm = external hidden unnamed_addr constant [99 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
define dso_local noundef ptr @_ZN6tflite11tflm_signal29CircularBufferReserveForWriteEPNS0_14CircularBufferEm(ptr nocapture noundef %0, i64 noundef %1) local_unnamed_addr #1 {
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %5 = add i64 %4, %1
  %6 = load i64, ptr %0, align 8, !tbaa !12
  %.not = icmp ugt i64 %5, %6
  br i1 %.not, label %7, label %8

7:                                                ; preds = %2
  tail call void @__assert_fail(ptr noundef nonnull @.str.4, ptr noundef nonnull @.str.1, i32 noundef 147, ptr noundef nonnull @__PRETTY_FUNCTION__._ZN6tflite11tflm_signal29CircularBufferReserveForWriteEPNS0_14CircularBufferEm) #2
  unreachable

8:                                                ; preds = %2
  %9 = getelementptr inbounds i8, ptr %0, i64 32
  %10 = load ptr, ptr %9, align 8, !tbaa !13
  %11 = icmp eq i64 %5, %6
  %spec.store.select = select i1 %11, i64 0, i64 %5
  store i64 %spec.store.select, ptr %3, align 8
  %12 = getelementptr inbounds i16, ptr %10, i64 %4
  %13 = getelementptr inbounds i8, ptr %0, i64 24
  %14 = load i32, ptr %13, align 8, !tbaa !14
  %15 = icmp ne i32 %14, 0
  %16 = icmp eq i64 %1, 0
  %17 = and i1 %16, %15
  %18 = zext i1 %17 to i32
  store i32 %18, ptr %13, align 8, !tbaa !14
  ret ptr %12
}

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, !7, i64 16}
!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 0}
!13 = !{!6, !11, i64 32}
!14 = !{!6, !10, i64 24}


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