; LLVM IR from tfhe/spqlios-arithmetic :: test/testlib/ntt120_dft.ll (ZNK11q120_nttvec7save_asEP6_q120a)

; 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.q120_nttvec = type { %"class.std::vector" }
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<mod_q120, std::allocator<mod_q120>>::_Vector_impl" }
%"struct.std::_Vector_base<mod_q120, std::allocator<mod_q120>>::_Vector_impl" = type { %"struct.std::_Vector_base<mod_q120, std::allocator<mod_q120>>::_Vector_impl_data" }
%"struct.std::_Vector_base<mod_q120, std::allocator<mod_q120>>::_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

; 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 i64 @_ZNK11q120_nttvec2nnEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK11q120_nttvec7save_asEP6_q120a(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef %1) #2 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %8 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %9, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %10 = call noundef i64 @_ZNK11q120_nttvec2nnEv(ptr noundef nonnull align 8 dereferenceable(24) %8)
  store i64 %10, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  store i64 0, ptr %7, align 8, !tbaa !9
  br label %11

11:                                               ; preds = %24, %2
  %12 = load i64, ptr %7, align 8, !tbaa !9
  %13 = load i64, ptr %6, align 8, !tbaa !9
  %14 = icmp ult i64 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  br label %27

16:                                               ; preds = %11
  %17 = getelementptr inbounds %class.q120_nttvec, ptr %8, i32 0, i32 0
  %18 = load i64, ptr %7, align 8, !tbaa !9
  %19 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNKSt6vectorI8mod_q120SaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %17, i64 noundef %18) #4
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = load i64, ptr %7, align 8, !tbaa !9
  %22 = mul i64 4, %21
  %23 = getelementptr inbounds i64, ptr %20, i64 %22
  call void @_ZNK8mod_q12013save_as_q120aEPv(ptr noundef nonnull align 8 dereferenceable(32) %19, ptr noundef %23)
  br label %24

24:                                               ; preds = %16
  %25 = load i64, ptr %7, align 8, !tbaa !9
  %26 = add i64 %25, 1
  store i64 %26, ptr %7, align 8, !tbaa !9
  br label %11, !llvm.loop !11

27:                                               ; preds = %15
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(32) ptr @_ZNKSt6vectorI8mod_q120SaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

declare void @_ZNK8mod_q12013save_as_q120aEPv(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) #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 = { 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 #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 = { 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 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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 nounwind uwtable
declare dso_local noundef i64 @_ZNK11q120_nttvec2nnEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZNK11q120_nttvec7save_asEP6_q120a(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef %1) local_unnamed_addr #1 align 2 {
  %3 = tail call noundef i64 @_ZNK11q120_nttvec2nnEv(ptr noundef nonnull align 8 dereferenceable(24) %0)
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %2
  ret void

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.07 = phi i64 [ %6, %.lr.ph ], [ 0, %2 ]
  %4 = tail call noundef nonnull align 8 dereferenceable(32) ptr @_ZNKSt6vectorI8mod_q120SaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %.07) #3
  %.idx = shl i64 %.07, 5
  %5 = getelementptr inbounds i8, ptr %1, i64 %.idx
  tail call void @_ZNK8mod_q12013save_as_q120aEPv(ptr noundef nonnull align 8 dereferenceable(32) %4, ptr noundef %5)
  %6 = add nuw i64 %.07, 1
  %exitcond.not = icmp eq i64 %6, %3
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(32) ptr @_ZNKSt6vectorI8mod_q120SaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

declare void @_ZNK8mod_q12013save_as_q120aEPv(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef) 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 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 = { "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 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass