; LLVM IR from tfhe/spqlios-arithmetic :: spqlios/reim (reim_conversions)

; 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.reim_to_znx64_precomp = type { ptr, i64, double }

; 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: nounwind uwtable
define dso_local void @reim_to_znx64_ref(ptr noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca double, align 8
  %10 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.reim_to_znx64_precomp, ptr %11, i32 0, i32 1
  %13 = load i64, ptr %12, align 8, !tbaa !9
  %14 = shl i64 %13, 1
  store i64 %14, ptr %7, align 8, !tbaa !13
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %15, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.reim_to_znx64_precomp, ptr %16, i32 0, i32 2
  %18 = load double, ptr %17, align 8, !tbaa !14
  %19 = fdiv double 1.000000e+00, %18
  store double %19, ptr %9, align 8, !tbaa !15
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  store i64 0, ptr %10, align 8, !tbaa !13
  br label %20

20:                                               ; preds = %37, %3
  %21 = load i64, ptr %10, align 8, !tbaa !13
  %22 = load i64, ptr %7, align 8, !tbaa !13
  %23 = icmp ult i64 %21, %22
  br i1 %23, label %25, label %24

24:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  br label %40

25:                                               ; preds = %20
  %26 = load ptr, ptr %8, align 8, !tbaa !5
  %27 = load i64, ptr %10, align 8, !tbaa !13
  %28 = getelementptr inbounds double, ptr %26, i64 %27
  %29 = load double, ptr %28, align 8, !tbaa !15
  %30 = load double, ptr %9, align 8, !tbaa !15
  %31 = fmul double %29, %30
  %32 = call double @llvm.rint.f64(double %31)
  %33 = fptosi double %32 to i64
  %34 = load ptr, ptr %5, align 8, !tbaa !5
  %35 = load i64, ptr %10, align 8, !tbaa !13
  %36 = getelementptr inbounds i64, ptr %34, i64 %35
  store i64 %33, ptr %36, align 8, !tbaa !13
  br label %37

37:                                               ; preds = %25
  %38 = load i64, ptr %10, align 8, !tbaa !13
  %39 = add i64 %38, 1
  store i64 %39, ptr %10, align 8, !tbaa !13
  br label %20, !llvm.loop !16

40:                                               ; preds = %24
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.rint.f64(double) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 nosync nounwind speculatable willreturn memory(none) }
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 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 8}
!10 = !{!"reim_to_znx64_precomp", !6, i64 0, !11, i64 8, !12, i64 16}
!11 = !{!"long", !7, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = !{!11, !11, i64 0}
!14 = !{!10, !12, i64 16}
!15 = !{!12, !12, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"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: nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local void @reim_to_znx64_ref(ptr nocapture noundef readonly %0, ptr nocapture noundef writeonly %1, ptr nocapture noundef readonly %2) local_unnamed_addr #0 {
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load i64, ptr %4, align 8, !tbaa !5
  %6 = shl i64 %5, 1
  %7 = getelementptr inbounds i8, ptr %0, i64 16
  %8 = load double, ptr %7, align 8, !tbaa !12
  %9 = fdiv double 1.000000e+00, %8
  %.not = icmp eq i64 %6, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %3
  ret void

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.010 = phi i64 [ %23, %.lr.ph ], [ 0, %3 ]
  %10 = getelementptr inbounds double, ptr %2, i64 %.010
  %11 = load double, ptr %10, align 8, !tbaa !13
  %12 = fmul double %9, %11
  %13 = tail call double @llvm.rint.f64(double %12)
  %14 = fptosi double %13 to i64
  %15 = getelementptr inbounds i64, ptr %1, i64 %.010
  store i64 %14, ptr %15, align 8, !tbaa !14
  %16 = or disjoint i64 %.010, 1
  %17 = getelementptr inbounds double, ptr %2, i64 %16
  %18 = load double, ptr %17, align 8, !tbaa !13
  %19 = fmul double %9, %18
  %20 = tail call double @llvm.rint.f64(double %19)
  %21 = fptosi double %20 to i64
  %22 = getelementptr inbounds i64, ptr %1, i64 %16
  store i64 %21, ptr %22, align 8, !tbaa !14
  %23 = add nuw i64 %.010, 2
  %exitcond.not.1 = icmp eq i64 %23, %6
  br i1 %exitcond.not.1, label %._crit_edge, label %.lr.ph, !llvm.loop !15
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.rint.f64(double) #1

attributes #0 = { nofree norecurse nosync nounwind 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 nosync nounwind speculatable willreturn memory(none) }

!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 8}
!6 = !{!"reim_to_znx64_precomp", !7, i64 0, !10, i64 8, !11, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!"double", !8, i64 0}
!12 = !{!6, !11, i64 16}
!13 = !{!11, !11, i64 0}
!14 = !{!10, !10, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass