; 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 }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN6tflite11tflm_signal19CircularBufferResetEPNS0_14CircularBufferE(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %3, i32 0, i32 1
  store i64 0, ptr %4, align 8, !tbaa !9
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  %6 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %5, i32 0, i32 2
  store i64 0, ptr %6, align 8, !tbaa !13
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %7, i32 0, i32 3
  store i32 1, ptr %8, align 8, !tbaa !14
  %9 = load ptr, ptr %2, align 8, !tbaa !5
  %10 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %9, i64 1
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %11, i32 0, i32 5
  store ptr %10, ptr %12, align 8, !tbaa !15
  %13 = load ptr, ptr %2, align 8, !tbaa !5
  %14 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %13, i32 0, i32 5
  %15 = load ptr, ptr %14, align 8, !tbaa !15
  %16 = load ptr, ptr %2, align 8, !tbaa !5
  %17 = getelementptr inbounds %"struct.tflite::tflm_signal::CircularBuffer", ptr %16, i32 0, i32 4
  %18 = load i32, ptr %17, align 4, !tbaa !16
  %19 = sext i32 %18 to i64
  %20 = mul i64 2, %19
  call void @llvm.memset.p0.i64(ptr align 2 %15, i8 0, i64 %20, i1 false)
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #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 nounwind willreturn memory(argmem: write) }

!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, !11, i64 8}
!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 16}
!14 = !{!10, !12, i64 24}
!15 = !{!10, !6, i64 32}
!16 = !{!10, !12, i64 28}


; 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 willreturn memory(argmem: readwrite) uwtable
define dso_local void @_ZN6tflite11tflm_signal19CircularBufferResetEPNS0_14CircularBufferE(ptr noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = getelementptr inbounds i8, ptr %0, i64 24
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %2, i8 0, i64 16, i1 false)
  store i32 1, ptr %3, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 40
  %5 = getelementptr inbounds i8, ptr %0, i64 32
  store ptr %4, ptr %5, align 8, !tbaa !12
  %6 = getelementptr inbounds i8, ptr %0, i64 28
  %7 = load i32, ptr %6, align 4, !tbaa !13
  %8 = sext i32 %7 to i64
  %9 = shl nsw i64 %8, 1
  tail call void @llvm.memset.p0.i64(ptr nonnull align 2 %4, i8 0, i64 %9, i1 false)
  ret void
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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 nocallback nofree nounwind willreturn memory(argmem: write) }

!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, !10, i64 24}
!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, !11, i64 32}
!13 = !{!6, !10, i64 28}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass