; LLVM IR from buresjan/optim_lbm :: nomad/src/Math/ArrayOfDouble.ll (ZNK9NOMAD_4_313ArrayOfDouble9nbDefinedEv)

; 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.NOMAD_4_3::ArrayOfDouble" = type { ptr, i64, ptr }
%"class.NOMAD_4_3::Double" = type <{ ptr, double, i8, [7 x i8] }>

; 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 zeroext i1 @_ZNK9NOMAD_4_36Double9isDefinedEv(ptr noundef nonnull align 8 dereferenceable(17)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_ZNK9NOMAD_4_313ArrayOfDouble9nbDefinedEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #2 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %6 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  %7 = getelementptr inbounds %"class.NOMAD_4_3::ArrayOfDouble", ptr %6, i32 0, i32 2
  %8 = load ptr, ptr %7, align 8, !tbaa !9
  store ptr %8, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 0, ptr %4, align 8, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 0, ptr %5, align 8, !tbaa !12
  br label %9

9:                                                ; preds = %22, %1
  %10 = load i64, ptr %5, align 8, !tbaa !12
  %11 = getelementptr inbounds %"class.NOMAD_4_3::ArrayOfDouble", ptr %6, i32 0, i32 1
  %12 = load i64, ptr %11, align 8, !tbaa !13
  %13 = icmp ult i64 %10, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  br label %27

15:                                               ; preds = %9
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = call noundef zeroext i1 @_ZNK9NOMAD_4_36Double9isDefinedEv(ptr noundef nonnull align 8 dereferenceable(17) %16)
  br i1 %17, label %18, label %21

18:                                               ; preds = %15
  %19 = load i64, ptr %4, align 8, !tbaa !12
  %20 = add i64 %19, 1
  store i64 %20, ptr %4, align 8, !tbaa !12
  br label %21

21:                                               ; preds = %18, %15
  br label %22

22:                                               ; preds = %21
  %23 = load i64, ptr %5, align 8, !tbaa !12
  %24 = add i64 %23, 1
  store i64 %24, ptr %5, align 8, !tbaa !12
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = getelementptr inbounds %"class.NOMAD_4_3::Double", ptr %25, i32 1
  store ptr %26, ptr %3, align 8, !tbaa !5
  br label %9, !llvm.loop !14

27:                                               ; preds = %14
  %28 = load i64, ptr %4, align 8, !tbaa !12
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret i64 %28
}

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 = { 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, !6, i64 16}
!10 = !{!"_ZTSN9NOMAD_4_313ArrayOfDoubleE", !11, i64 8, !6, i64 16}
!11 = !{!"long", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !11, i64 8}
!14 = distinct !{!14, !15}
!15 = !{!"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 zeroext i1 @_ZNK9NOMAD_4_36Double9isDefinedEv(ptr noundef nonnull align 8 dereferenceable(17)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_ZNK9NOMAD_4_313ArrayOfDouble9nbDefinedEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(24) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load i64, ptr %2, align 8, !tbaa !5
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 16
  %5 = load ptr, ptr %4, align 8, !tbaa !11
  br label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %1
  %.06.lcssa = phi i64 [ 0, %1 ], [ %spec.select, %.lr.ph ]
  ret i64 %.06.lcssa

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %.010 = phi i64 [ %8, %.lr.ph ], [ 0, %.lr.ph.preheader ]
  %.069 = phi i64 [ %spec.select, %.lr.ph ], [ 0, %.lr.ph.preheader ]
  %.078 = phi ptr [ %9, %.lr.ph ], [ %5, %.lr.ph.preheader ]
  %6 = tail call noundef zeroext i1 @_ZNK9NOMAD_4_36Double9isDefinedEv(ptr noundef nonnull align 8 dereferenceable(17) %.078)
  %7 = zext i1 %6 to i64
  %spec.select = add i64 %.069, %7
  %8 = add nuw i64 %.010, 1
  %9 = getelementptr inbounds i8, ptr %.078, i64 24
  %10 = load i64, ptr %2, align 8, !tbaa !5
  %11 = icmp ult i64 %8, %10
  br i1 %11, label %.lr.ph, label %._crit_edge, !llvm.loop !12
}

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" }

!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, !7, i64 8}
!6 = !{!"_ZTSN9NOMAD_4_313ArrayOfDoubleE", !7, i64 8, !10, i64 16}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 16}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass