; LLVM IR from Try/Tempest :: Engine/thirdparty/openal-soft/core/bs2b.ll (ZN4Bs2b4bs2b5clearEv)

; 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.Bs2b::bs2b::t_last_sample" = type { float, float }
%"struct.Bs2b::bs2b" = type { i32, i32, float, float, float, float, float, %"struct.std::array" }
%"struct.std::array" = type { [2 x %"struct.Bs2b::bs2b::t_last_sample"] }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4Bs2b4bs2b5clearEv(ptr noundef nonnull align 4 dereferenceable(44) %0) #0 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca %"struct.Bs2b::bs2b::t_last_sample", align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  %5 = getelementptr inbounds %"struct.Bs2b::bs2b", ptr %4, i32 0, i32 7
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  %6 = getelementptr inbounds %"struct.Bs2b::bs2b::t_last_sample", ptr %3, i32 0, i32 0
  store float 0.000000e+00, ptr %6, align 4, !tbaa !9
  %7 = getelementptr inbounds %"struct.Bs2b::bs2b::t_last_sample", ptr %3, i32 0, i32 1
  store float 0.000000e+00, ptr %7, align 4, !tbaa !12
  call void @_ZNSt5arrayIN4Bs2b4bs2b13t_last_sampleELm2EE4fillERKS2_(ptr noundef nonnull align 4 dereferenceable(16) %5, ptr noundef nonnull align 4 dereferenceable(8) %3)
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5arrayIN4Bs2b4bs2b13t_last_sampleELm2EE4fillERKS2_(ptr noundef nonnull align 4 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(8)) #0 align 2

; 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

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 = { 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, !11, i64 0}
!10 = !{!"_ZTSN4Bs2b4bs2b13t_last_sampleE", !11, i64 0, !11, i64 4}
!11 = !{!"float", !7, i64 0}
!12 = !{!10, !11, i64 4}


; 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"

%"struct.Bs2b::bs2b::t_last_sample" = type { float, float }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4Bs2b4bs2b5clearEv(ptr noundef nonnull align 4 dereferenceable(44) %0) local_unnamed_addr #0 align 2 {
  %2 = alloca %"struct.Bs2b::bs2b::t_last_sample", align 8
  %3 = getelementptr inbounds i8, ptr %0, i64 28
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #2
  store <2 x float> zeroinitializer, ptr %2, align 8, !tbaa !5
  call void @_ZNSt5arrayIN4Bs2b4bs2b13t_last_sampleELm2EE4fillERKS2_(ptr noundef nonnull align 4 dereferenceable(16) %3, ptr noundef nonnull align 4 dereferenceable(8) %2)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #2
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5arrayIN4Bs2b4bs2b13t_last_sampleELm2EE4fillERKS2_(ptr noundef nonnull align 4 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 = !{!"float", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,SLPVectorizerPass,SROAPass