; LLVM IR from tfhe/spqlios-arithmetic :: spqlios/cplx (cplx_fft_ref)

; 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.cplx_fft_precomp = type { ptr, i64, i64, ptr, ptr }

@cplx_fft_simple.p = external hidden global [31 x ptr], align 16

; 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
declare dso_local ptr @new_cplx_fft_precomp(i32 noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @cplx_fft_simple(i32 noundef %0, ptr noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store i32 %0, ptr %3, align 4, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = call i32 @log2m(i32 noundef %6)
  %8 = zext i32 %7 to i64
  %9 = getelementptr inbounds ptr, ptr @cplx_fft_simple.p, i64 %8
  store ptr %9, ptr %5, align 8, !tbaa !9
  %10 = load ptr, ptr %5, align 8, !tbaa !9
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  %12 = icmp ne ptr %11, null
  br i1 %12, label %17, label %13

13:                                               ; preds = %2
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = call ptr @new_cplx_fft_precomp(i32 noundef %14, i32 noundef 0)
  %16 = load ptr, ptr %5, align 8, !tbaa !9
  store ptr %15, ptr %16, align 8, !tbaa !9
  br label %17

17:                                               ; preds = %13, %2
  %18 = load ptr, ptr %5, align 8, !tbaa !9
  %19 = load ptr, ptr %18, align 8, !tbaa !9
  %20 = getelementptr inbounds %struct.cplx_fft_precomp, ptr %19, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8, !tbaa !11
  %22 = load ptr, ptr %5, align 8, !tbaa !9
  %23 = load ptr, ptr %22, align 8, !tbaa !9
  %24 = load ptr, ptr %4, align 8, !tbaa !9
  call void %21(ptr noundef %23, ptr noundef %24)
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret void
}

declare i32 @log2m(i32 noundef) #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 = { "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 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"cplx_fft_precomp", !10, i64 0, !13, i64 8, !13, i64 16, !10, i64 24, !10, i64 32}
!13 = !{!"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"

@cplx_fft_simple.p = external hidden local_unnamed_addr global [31 x ptr], align 16

; Function Attrs: nounwind uwtable
declare dso_local ptr @new_cplx_fft_precomp(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @cplx_fft_simple(i32 noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = tail call i32 @log2m(i32 noundef %0) #2
  %4 = zext i32 %3 to i64
  %5 = getelementptr inbounds ptr, ptr @cplx_fft_simple.p, i64 %4
  %6 = load ptr, ptr %5, align 8, !tbaa !5
  %.not = icmp eq ptr %6, null
  br i1 %.not, label %7, label %9

7:                                                ; preds = %2
  %8 = tail call ptr @new_cplx_fft_precomp(i32 noundef %0, i32 noundef 0)
  store ptr %8, ptr %5, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %7, %2
  %10 = phi ptr [ %8, %7 ], [ %6, %2 ]
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  tail call void %11(ptr noundef nonnull %10, ptr noundef %1) #2
  ret void
}

declare i32 @log2m(i32 noundef) local_unnamed_addr #1

attributes #0 = { 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 = { "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 = { 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, !6, i64 0}
!10 = !{!"cplx_fft_precomp", !6, i64 0, !11, i64 8, !11, i64 16, !6, i64 24, !6, i64 32}
!11 = !{!"long", !7, i64 0}


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