; LLVM IR from tfhe/spqlios-arithmetic :: test/testlib/fft64_dft.ll (ZmIR13reim_fft64vecRKS_)

; 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.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }

@_ZSt4cerr = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [23 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [84 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [24 x i8], align 1

; 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 ptr @_ZN13reim_fft64vec4dataEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; 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: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #2

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) #3

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #4 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: noreturn nounwind
declare void @abort() #5

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZmIR13reim_fft64vecRKS_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1) #4 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = call noundef i64 @_ZNK13reim_fft64vec2nnEv(ptr noundef nonnull align 8 dereferenceable(24) %9)
  store i64 %10, ptr %5, align 8, !tbaa !9
  br label %11

11:                                               ; preds = %2
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = call noundef i64 @_ZNK13reim_fft64vec2nnEv(ptr noundef nonnull align 8 dereferenceable(24) %12)
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = call noundef i64 @_ZNK13reim_fft64vec2nnEv(ptr noundef nonnull align 8 dereferenceable(24) %14)
  %16 = icmp eq i64 %13, %15
  br i1 %16, label %25, label %17

17:                                               ; preds = %11
  %18 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cerr, ptr noundef @.str)
  %19 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %18, ptr noundef @.str.1)
  %20 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %19, ptr noundef @.str.2)
  %21 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %20, i32 noundef 84)
  %22 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %21, ptr noundef @.str.3)
  %23 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %22, ptr noundef @.str.4)
  %24 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %23, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @abort() #7
  unreachable

25:                                               ; preds = %11
  br label %26

26:                                               ; preds = %25
  br label %27

27:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  %29 = call noundef ptr @_ZN13reim_fft64vec4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %28)
  store ptr %29, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = call noundef ptr @_ZNK13reim_fft64vec4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %30)
  store ptr %31, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #6
  store i64 0, ptr %8, align 8, !tbaa !9
  br label %32

32:                                               ; preds = %50, %27
  %33 = load i64, ptr %8, align 8, !tbaa !9
  %34 = load i64, ptr %5, align 8, !tbaa !9
  %35 = icmp ult i64 %33, %34
  br i1 %35, label %37, label %36

36:                                               ; preds = %32
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  br label %53

37:                                               ; preds = %32
  %38 = load ptr, ptr %6, align 8, !tbaa !5
  %39 = load i64, ptr %8, align 8, !tbaa !9
  %40 = getelementptr inbounds double, ptr %38, i64 %39
  %41 = load double, ptr %40, align 8, !tbaa !11
  %42 = load ptr, ptr %7, align 8, !tbaa !5
  %43 = load i64, ptr %8, align 8, !tbaa !9
  %44 = getelementptr inbounds double, ptr %42, i64 %43
  %45 = load double, ptr %44, align 8, !tbaa !11
  %46 = fsub double %41, %45
  %47 = load ptr, ptr %6, align 8, !tbaa !5
  %48 = load i64, ptr %8, align 8, !tbaa !9
  %49 = getelementptr inbounds double, ptr %47, i64 %48
  store double %46, ptr %49, align 8, !tbaa !11
  br label %50

50:                                               ; preds = %37
  %51 = load i64, ptr %8, align 8, !tbaa !9
  %52 = add i64 %51, 1
  store i64 %52, ptr %8, align 8, !tbaa !9
  br label %32, !llvm.loop !13

53:                                               ; preds = %36
  %54 = load ptr, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  ret ptr %54
}

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 = { inlinehint 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 = { 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 = { 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 #6 = { nounwind }
attributes #7 = { 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, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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"

%"class.std::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }

@_ZSt4cerr = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [23 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [84 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [24 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_ZN13reim_fft64vec4dataEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; 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: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #1

declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #1

; Function Attrs: noreturn nounwind
declare void @abort() local_unnamed_addr #4

; Function Attrs: mustprogress uwtable
define dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZmIR13reim_fft64vecRKS_(ptr noundef nonnull returned align 8 dereferenceable(24) %0, ptr noundef nonnull align 8 dereferenceable(24) %1) local_unnamed_addr #3 {
  %3 = tail call noundef i64 @_ZNK13reim_fft64vec2nnEv(ptr noundef nonnull align 8 dereferenceable(24) %0)
  %4 = tail call noundef i64 @_ZNK13reim_fft64vec2nnEv(ptr noundef nonnull align 8 dereferenceable(24) %1)
  %5 = tail call noundef i64 @_ZNK13reim_fft64vec2nnEv(ptr noundef nonnull align 8 dereferenceable(24) %0)
  %6 = icmp eq i64 %4, %5
  br i1 %6, label %15, label %7

7:                                                ; preds = %2
  %8 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cerr, ptr noundef nonnull @.str)
  %9 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %8, ptr noundef nonnull @.str.1)
  %10 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %9, ptr noundef nonnull @.str.2)
  %11 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEi(ptr noundef nonnull align 8 dereferenceable(8) %10, i32 noundef 84)
  %12 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %11, ptr noundef nonnull @.str.3)
  %13 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) %12, ptr noundef nonnull @.str.4)
  %14 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %13, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  tail call void @abort() #5
  unreachable

15:                                               ; preds = %2
  %16 = tail call noundef ptr @_ZN13reim_fft64vec4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %0)
  %17 = tail call noundef ptr @_ZNK13reim_fft64vec4dataEv(ptr noundef nonnull align 8 dereferenceable(24) %1)
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %15
  %min.iters.check = icmp ult i64 %3, 6
  br i1 %min.iters.check, label %.lr.ph.preheader19, label %vector.memcheck

.lr.ph.preheader19:                               ; preds = %middle.block, %vector.memcheck, %.lr.ph.preheader
  %.014.ph = phi i64 [ 0, %vector.memcheck ], [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %xtraiter = and i64 %3, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol

.lr.ph.prol:                                      ; preds = %.lr.ph.preheader19, %.lr.ph.prol
  %.014.prol = phi i64 [ %23, %.lr.ph.prol ], [ %.014.ph, %.lr.ph.preheader19 ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader19 ]
  %18 = getelementptr inbounds double, ptr %16, i64 %.014.prol
  %19 = load double, ptr %18, align 8, !tbaa !5
  %20 = getelementptr inbounds double, ptr %17, i64 %.014.prol
  %21 = load double, ptr %20, align 8, !tbaa !5
  %22 = fsub double %19, %21
  store double %22, ptr %18, align 8, !tbaa !5
  %23 = add nuw i64 %.014.prol, 1
  %prol.iter.next = add i64 %prol.iter, 1
  %prol.iter.cmp.not = icmp eq i64 %prol.iter.next, %xtraiter
  br i1 %prol.iter.cmp.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol, !llvm.loop !9

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader19
  %.014.unr = phi i64 [ %.014.ph, %.lr.ph.preheader19 ], [ %23, %.lr.ph.prol ]
  %24 = sub i64 %.014.ph, %3
  %25 = icmp ugt i64 %24, -4
  br i1 %25, label %._crit_edge, label %.lr.ph

vector.memcheck:                                  ; preds = %.lr.ph.preheader
  %26 = shl i64 %3, 3
  %scevgep = getelementptr i8, ptr %16, i64 %26
  %scevgep15 = getelementptr i8, ptr %17, i64 %26
  %bound0 = icmp ult ptr %16, %scevgep15
  %bound1 = icmp ult ptr %17, %scevgep
  %found.conflict = and i1 %bound0, %bound1
  br i1 %found.conflict, label %.lr.ph.preheader19, label %vector.ph

vector.ph:                                        ; preds = %vector.memcheck
  %n.vec = and i64 %3, -4
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %27 = getelementptr inbounds double, ptr %16, i64 %index
  %28 = getelementptr inbounds i8, ptr %27, i64 16
  %wide.load = load <2 x double>, ptr %27, align 8, !tbaa !5, !alias.scope !11, !noalias !14
  %wide.load16 = load <2 x double>, ptr %28, align 8, !tbaa !5, !alias.scope !11, !noalias !14
  %29 = getelementptr inbounds double, ptr %17, i64 %index
  %30 = getelementptr inbounds i8, ptr %29, i64 16
  %wide.load17 = load <2 x double>, ptr %29, align 8, !tbaa !5, !alias.scope !14
  %wide.load18 = load <2 x double>, ptr %30, align 8, !tbaa !5, !alias.scope !14
  %31 = fsub <2 x double> %wide.load, %wide.load17
  %32 = fsub <2 x double> %wide.load16, %wide.load18
  store <2 x double> %31, ptr %27, align 8, !tbaa !5, !alias.scope !11, !noalias !14
  store <2 x double> %32, ptr %28, align 8, !tbaa !5, !alias.scope !11, !noalias !14
  %index.next = add nuw i64 %index, 4
  %33 = icmp eq i64 %index.next, %n.vec
  br i1 %33, label %middle.block, label %vector.body, !llvm.loop !16

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %3, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader19

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %middle.block, %15
  ret ptr %0

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %.014 = phi i64 [ %57, %.lr.ph ], [ %.014.unr, %.lr.ph.prol.loopexit ]
  %34 = getelementptr inbounds double, ptr %16, i64 %.014
  %35 = load double, ptr %34, align 8, !tbaa !5
  %36 = getelementptr inbounds double, ptr %17, i64 %.014
  %37 = load double, ptr %36, align 8, !tbaa !5
  %38 = fsub double %35, %37
  store double %38, ptr %34, align 8, !tbaa !5
  %39 = add nuw i64 %.014, 1
  %40 = getelementptr inbounds double, ptr %16, i64 %39
  %41 = load double, ptr %40, align 8, !tbaa !5
  %42 = getelementptr inbounds double, ptr %17, i64 %39
  %43 = load double, ptr %42, align 8, !tbaa !5
  %44 = fsub double %41, %43
  store double %44, ptr %40, align 8, !tbaa !5
  %45 = add nuw i64 %.014, 2
  %46 = getelementptr inbounds double, ptr %16, i64 %45
  %47 = load double, ptr %46, align 8, !tbaa !5
  %48 = getelementptr inbounds double, ptr %17, i64 %45
  %49 = load double, ptr %48, align 8, !tbaa !5
  %50 = fsub double %47, %49
  store double %50, ptr %46, align 8, !tbaa !5
  %51 = add nuw i64 %.014, 3
  %52 = getelementptr inbounds double, ptr %16, i64 %51
  %53 = load double, ptr %52, align 8, !tbaa !5
  %54 = getelementptr inbounds double, ptr %17, i64 %51
  %55 = load double, ptr %54, align 8, !tbaa !5
  %56 = fsub double %53, %55
  store double %56, ptr %52, align 8, !tbaa !5
  %57 = add nuw i64 %.014, 4
  %exitcond.not.3 = icmp eq i64 %57, %3
  br i1 %exitcond.not.3, label %._crit_edge, label %.lr.ph, !llvm.loop !20
}

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 = { inlinehint 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 = { 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 #4 = { 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 #5 = { 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 = !{!"double", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.unroll.disable"}
!11 = !{!12}
!12 = distinct !{!12, !13}
!13 = distinct !{!13, !"LVerDomain"}
!14 = !{!15}
!15 = distinct !{!15, !13}
!16 = distinct !{!16, !17, !18, !19}
!17 = !{!"llvm.loop.mustprogress"}
!18 = !{!"llvm.loop.isvectorized", i32 1}
!19 = !{!"llvm.loop.unroll.runtime.disable"}
!20 = distinct !{!20, !17, !18}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass