; LLVM IR from tfhe/spqlios-arithmetic :: test/testlib/fft64_dft.ll (Z13simple_ifft64RK13reim_fft64vec)

; 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"

%class.polynomial.5 = type { %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK13reim_fft64vec4dataEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNK13reim_fft64vec2nnEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #2

declare void @reim_ifft_simple(i32 noundef, ptr noundef) #3

declare void @_ZN10polynomialIdEC1Em(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) unnamed_addr #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN10polynomialIdED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z13simple_ifft64RK13reim_fft64vec(ptr dead_on_unwind noalias writable sret(%class.polynomial.5) align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1) #5 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  %7 = alloca i1, align 1
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = call noundef i64 @_ZNK13reim_fft64vec2nnEv(ptr noundef nonnull align 8 dereferenceable(24) %11)
  store i64 %12, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  %13 = load i64, ptr %5, align 8, !tbaa !9
  %14 = udiv i64 %13, 2
  store i64 %14, ptr %6, align 8, !tbaa !9
  store i1 false, ptr %7, align 1
  %15 = load i64, ptr %5, align 8, !tbaa !9
  call void @_ZN10polynomialIdEC1Em(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %15)
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #6
  %16 = invoke noundef ptr @_ZN10polynomialIdE4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %0)
          to label %17 unwind label %28

17:                                               ; preds = %2
  store ptr %16, ptr %8, align 8, !tbaa !5
  %18 = load ptr, ptr %8, align 8, !tbaa !5
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = call noundef ptr @_ZNK13reim_fft64vec4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %19)
  %21 = load i64, ptr %5, align 8, !tbaa !9
  %22 = mul i64 %21, 8
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %18, ptr align 8 %20, i64 %22, i1 false)
  %23 = load i64, ptr %6, align 8, !tbaa !9
  %24 = trunc i64 %23 to i32
  %25 = load ptr, ptr %8, align 8, !tbaa !5
  invoke void @reim_ifft_simple(i32 noundef %24, ptr noundef %25)
          to label %26 unwind label %28

26:                                               ; preds = %17
  store i1 true, ptr %7, align 1
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  %27 = load i1, ptr %7, align 1
  br i1 %27, label %33, label %32

28:                                               ; preds = %17, %2
  %29 = landingpad { ptr, i32 }
          cleanup
  %30 = extractvalue { ptr, i32 } %29, 0
  store ptr %30, ptr %9, align 8
  %31 = extractvalue { ptr, i32 } %29, 1
  store i32 %31, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  call void @_ZN10polynomialIdED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  br label %34

32:                                               ; preds = %26
  call void @_ZN10polynomialIdED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #6
  br label %33

33:                                               ; preds = %32, %26
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  ret void

34:                                               ; preds = %28
  %35 = load ptr, ptr %9, align 8
  %36 = load i32, ptr %10, align 4
  %37 = insertvalue { ptr, i32 } poison, ptr %35, 0
  %38 = insertvalue { ptr, i32 } %37, i32 %36, 1
  resume { ptr, i32 } %38
}

declare noundef ptr @_ZN10polynomialIdE4dataEv(ptr noundef nonnull align 8 dereferenceable(24)) #3

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 #4 = { inlinehint 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 #5 = { 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 #6 = { 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}


; 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"

%class.polynomial.5 = type { %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl" = type { %"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" }
%"struct.std::_Vector_base<double, std::allocator<double>>::_Vector_impl_data" = type { ptr, ptr, ptr }

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZNK13reim_fft64vec4dataEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNK13reim_fft64vec2nnEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

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

declare void @reim_ifft_simple(i32 noundef, ptr noundef) local_unnamed_addr #2

declare void @_ZN10polynomialIdEC1Em(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) unnamed_addr #2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN10polynomialIdED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #3 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z13simple_ifft64RK13reim_fft64vec(ptr dead_on_unwind noalias writable sret(%class.polynomial.5) align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1) local_unnamed_addr #4 personality ptr @__gxx_personality_v0 {
  %3 = tail call noundef i64 @_ZNK13reim_fft64vec2nnEv(ptr noundef nonnull align 8 dereferenceable(24) %1)
  tail call void @_ZN10polynomialIdEC1Em(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %3)
  %4 = invoke noundef ptr @_ZN10polynomialIdE4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %0)
          to label %5 unwind label %10

5:                                                ; preds = %2
  %6 = lshr i64 %3, 1
  %7 = tail call noundef ptr @_ZNK13reim_fft64vec4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %1)
  %8 = shl i64 %3, 3
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 8 %4, ptr align 8 %7, i64 %8, i1 false)
  %9 = trunc i64 %6 to i32
  invoke void @reim_ifft_simple(i32 noundef %9, ptr noundef %4)
          to label %12 unwind label %10

10:                                               ; preds = %5, %2
  %11 = landingpad { ptr, i32 }
          cleanup
  tail call void @_ZN10polynomialIdED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #5
  resume { ptr, i32 } %11

12:                                               ; preds = %5
  ret void
}

declare noundef ptr @_ZN10polynomialIdE4dataEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2

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 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 = { inlinehint 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 #4 = { 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 #5 = { 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)"}


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