; 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.9 = external hidden unnamed_addr constant [32 x i8], align 1
@__PRETTY_FUNCTION__._ZN6tflite11tflm_signal20CircularBufferRewindEPNS0_14CircularBufferEm = external hidden unnamed_addr constant [86 x i8], align 1

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZN6tflite11tflm_signal22CircularBufferCanWriteEPKNS0_14CircularBufferE(ptr noundef) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN6tflite11tflm_signal20CircularBufferRewindEPNS0_14CircularBufferEm(ptr noundef %0, i64 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !9
  %5 = load i64, ptr %4, align 8, !tbaa !9
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = call noundef i64 @_ZN6tflite11tflm_signal22CircularBufferCanWriteEPKNS0_14CircularBufferE(ptr noundef %6)
  %8 = icmp ule i64 %5, %7
  br i1 %8, label %9, label %10

9:                                                ; preds = %2
  br label %12

10:                                               ; preds = %2
  call void @__assert_fail(ptr noundef @.str.9, ptr noundef @.str.1, i32 noundef 209, ptr noundef @__PRETTY_FUNCTION__._ZN6tflite11tflm_signal20CircularBufferRewindEPNS0_14CircularBufferEm) #2
  unreachable

11:                                               ; No predecessors!
  br label %12

12:                                               ; preds = %11, %9
  %13 = load i64, ptr %4, align 8, !tbaa !9
  %14 = load ptr, ptr %3, 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 !11
  %17 = icmp ugt i64 %13, %16
  br i1 %17, label %18, label %30

18:                                               ; preds = %12
  %19 = load ptr, ptr %3, 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 !11
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %22, i32 0, i32 0
  %24 = load i64, ptr %23, align 8, !tbaa !14
  %25 = add i64 %21, %24
  %26 = load i64, ptr %4, align 8, !tbaa !9
  %27 = sub i64 %25, %26
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  %29 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %28, i32 0, i32 1
  store i64 %27, ptr %29, align 8, !tbaa !11
  br label %36

30:                                               ; preds = %12
  %31 = load i64, ptr %4, align 8, !tbaa !9
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %32, i32 0, i32 1
  %34 = load i64, ptr %33, align 8, !tbaa !11
  %35 = sub i64 %34, %31
  store i64 %35, ptr %33, align 8, !tbaa !11
  br label %36

36:                                               ; preds = %30, %18
  %37 = load i64, ptr %4, align 8, !tbaa !9
  %38 = icmp ugt i64 %37, 0
  br i1 %38, label %39, label %42

39:                                               ; preds = %36
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %40, i32 0, i32 3
  store i32 0, ptr %41, align 8, !tbaa !15
  br label %42

42:                                               ; preds = %39, %36
  ret void
}

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, !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 8}
!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, !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.9 = external hidden unnamed_addr constant [32 x i8], align 1
@__PRETTY_FUNCTION__._ZN6tflite11tflm_signal20CircularBufferRewindEPNS0_14CircularBufferEm = external hidden unnamed_addr constant [86 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 i64 @_ZN6tflite11tflm_signal22CircularBufferCanWriteEPKNS0_14CircularBufferE(ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN6tflite11tflm_signal20CircularBufferRewindEPNS0_14CircularBufferEm(ptr noundef %0, i64 noundef %1) local_unnamed_addr #1 {
  %3 = tail call noundef i64 @_ZN6tflite11tflm_signal22CircularBufferCanWriteEPKNS0_14CircularBufferE(ptr noundef %0)
  %.not = icmp ult i64 %3, %1
  br i1 %.not, label %4, label %5

4:                                                ; preds = %2
  tail call void @__assert_fail(ptr noundef nonnull @.str.9, ptr noundef nonnull @.str.1, i32 noundef 209, ptr noundef nonnull @__PRETTY_FUNCTION__._ZN6tflite11tflm_signal20CircularBufferRewindEPNS0_14CircularBufferEm) #2
  unreachable

5:                                                ; preds = %2
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  %7 = load i64, ptr %6, align 8, !tbaa !5
  %8 = icmp ult i64 %7, %1
  br i1 %8, label %.thread, label %11

.thread:                                          ; preds = %5
  %9 = load i64, ptr %0, align 8, !tbaa !12
  %10 = sub i64 %7, %1
  %storemerge14 = add i64 %10, %9
  store i64 %storemerge14, ptr %6, align 8, !tbaa !5
  br label %12

11:                                               ; preds = %5
  %storemerge = sub i64 %7, %1
  store i64 %storemerge, ptr %6, align 8, !tbaa !5
  %.not12 = icmp eq i64 %1, 0
  br i1 %.not12, label %14, label %12

12:                                               ; preds = %.thread, %11
  %13 = getelementptr inbounds i8, ptr %0, i64 24
  store i32 0, ptr %13, align 8, !tbaa !13
  br label %14

14:                                               ; preds = %12, %11
  ret void
}

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 8}
!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, !10, i64 24}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,InstCombinePass,JumpThreadingPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass