; LLVM IR from sp-nitech/SPTK :: src/math (fast_fourier_transform)

; 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"

; Function Attrs: mustprogress uwtable
declare dso_local noundef zeroext i1 @_ZNK4sptk20FastFourierTransform3RunERKSt6vectorIdSaIdEES5_PS3_S6_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24), ptr noundef, ptr noundef) #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_ZNK4sptk20FastFourierTransform3RunEPSt6vectorIdSaIdEES4_(ptr noundef nonnull align 8 dereferenceable(48) %0, ptr noundef %1, ptr noundef %2) #0 align 2 {
  %4 = alloca i1, align 1
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  %8 = load ptr, ptr %5, align 8
  %9 = load ptr, ptr %6, align 8, !tbaa !5
  %10 = icmp eq ptr null, %9
  br i1 %10, label %14, label %11

11:                                               ; preds = %3
  %12 = load ptr, ptr %7, align 8, !tbaa !5
  %13 = icmp eq ptr null, %12
  br i1 %13, label %14, label %15

14:                                               ; preds = %11, %3
  store i1 false, ptr %4, align 1
  br label %21

15:                                               ; preds = %11
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  %17 = load ptr, ptr %7, align 8, !tbaa !5
  %18 = load ptr, ptr %6, align 8, !tbaa !5
  %19 = load ptr, ptr %7, align 8, !tbaa !5
  %20 = call noundef zeroext i1 @_ZNK4sptk20FastFourierTransform3RunERKSt6vectorIdSaIdEES5_PS3_S6_(ptr noundef nonnull align 8 dereferenceable(48) %8, ptr noundef nonnull align 8 dereferenceable(24) %16, ptr noundef nonnull align 8 dereferenceable(24) %17, ptr noundef %18, ptr noundef %19)
  store i1 %20, ptr %4, align 1
  br label %21

21:                                               ; preds = %15, %14
  %22 = load i1, ptr %4, align 1
  ret i1 %22
}

attributes #0 = { 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" }

!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"}


; 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 uwtable
declare dso_local noundef zeroext i1 @_ZNK4sptk20FastFourierTransform3RunERKSt6vectorIdSaIdEES5_PS3_S6_(ptr noundef nonnull align 8 dereferenceable(48), ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24), ptr noundef, ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_ZNK4sptk20FastFourierTransform3RunEPSt6vectorIdSaIdEES4_(ptr noundef nonnull align 8 dereferenceable(48) %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #0 align 2 {
  %4 = icmp eq ptr %1, null
  %5 = icmp eq ptr %2, null
  %or.cond = or i1 %4, %5
  br i1 %or.cond, label %8, label %6

6:                                                ; preds = %3
  %7 = tail call noundef zeroext i1 @_ZNK4sptk20FastFourierTransform3RunERKSt6vectorIdSaIdEES5_PS3_S6_(ptr noundef nonnull align 8 dereferenceable(48) %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2, ptr noundef nonnull %1, ptr noundef nonnull %2)
  br label %8

8:                                                ; preds = %3, %6
  %.0 = phi i1 [ %7, %6 ], [ false, %3 ]
  ret i1 %.0
}

attributes #0 = { 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" }

!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: CorrelatedValuePropagationPass,GlobalOptPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass