; LLVM IR from buresjan/optim_lbm :: nomad/src/Math/ArrayOfDouble.ll (ZNK9NOMAD_4_313ArrayOfDouble9isDefinedEv)

; 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 zeroext i1 @_ZNK9NOMAD_4_313ArrayOfDouble9isDefinedEv(ptr noundef nonnull align 8 dereferenceable(24) %0) unnamed_addr #2 align 2 {
  %2 = alloca i1, align 1
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  %7 = load ptr, ptr %3, align 8
  %8 = getelementptr inbounds %"class.NOMAD_4_3::ArrayOfDouble", ptr %7, i32 0, i32 1
  %9 = load i64, ptr %8, align 8, !tbaa !9
  %10 = icmp eq i64 %9, 0
  br i1 %10, label %11, label %12

11:                                               ; preds = %1
  store i1 false, ptr %2, align 1
  br label %35

12:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %13 = getelementptr inbounds %"class.NOMAD_4_3::ArrayOfDouble", ptr %7, i32 0, i32 2
  %14 = load ptr, ptr %13, align 8, !tbaa !12
  store ptr %14, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 0, ptr %5, align 8, !tbaa !13
  br label %15

15:                                               ; preds = %26, %12
  %16 = load i64, ptr %5, align 8, !tbaa !13
  %17 = getelementptr inbounds %"class.NOMAD_4_3::ArrayOfDouble", ptr %7, i32 0, i32 1
  %18 = load i64, ptr %17, align 8, !tbaa !9
  %19 = icmp ult i64 %16, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %15
  store i32 2, ptr %6, align 4
  br label %31

21:                                               ; preds = %15
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = call noundef zeroext i1 @_ZNK9NOMAD_4_36Double9isDefinedEv(ptr noundef nonnull align 8 dereferenceable(17) %22)
  br i1 %23, label %24, label %25

24:                                               ; preds = %21
  store i1 true, ptr %2, align 1
  store i32 1, ptr %6, align 4
  br label %31

25:                                               ; preds = %21
  br label %26

26:                                               ; preds = %25
  %27 = load i64, ptr %5, align 8, !tbaa !13
  %28 = add i64 %27, 1
  store i64 %28, ptr %5, align 8, !tbaa !13
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = getelementptr inbounds %"class.NOMAD_4_3::Double", ptr %29, i32 1
  store ptr %30, ptr %4, align 8, !tbaa !5
  br label %15, !llvm.loop !14

31:                                               ; preds = %24, %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  %32 = load i32, ptr %6, align 4
  switch i32 %32, label %34 [
    i32 2, label %33
  ]

33:                                               ; preds = %31
  store i1 false, ptr %2, align 1
  store i32 1, ptr %6, align 4
  br label %34

34:                                               ; preds = %33, %31
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  br label %35

35:                                               ; preds = %34, %11
  %36 = load i1, ptr %2, align 1
  ret i1 %36
}

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, !11, i64 8}
!10 = !{!"_ZTSN9NOMAD_4_313ArrayOfDoubleE", !11, i64 8, !6, i64 16}
!11 = !{!"long", !7, i64 0}
!12 = !{!10, !6, i64 16}
!13 = !{!11, !11, i64 0}
!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 zeroext i1 @_ZNK9NOMAD_4_313ArrayOfDouble9isDefinedEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(24) %0) unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load i64, ptr %2, align 8, !tbaa !5
  %4 = icmp eq i64 %3, 0
  br i1 %4, label %.critedge, label %.lr.ph.preheader

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

.lr.ph:                                           ; preds = %.lr.ph.preheader, %8
  %.0611 = phi i64 [ %9, %8 ], [ 0, %.lr.ph.preheader ]
  %.0710 = phi ptr [ %10, %8 ], [ %6, %.lr.ph.preheader ]
  %7 = tail call noundef zeroext i1 @_ZNK9NOMAD_4_36Double9isDefinedEv(ptr noundef nonnull align 8 dereferenceable(17) %.0710)
  br i1 %7, label %.critedge, label %8

8:                                                ; preds = %.lr.ph
  %9 = add nuw i64 %.0611, 1
  %10 = getelementptr inbounds i8, ptr %.0710, i64 24
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %.not = icmp ult i64 %9, %11
  br i1 %.not, label %.lr.ph, label %.critedge, !llvm.loop !12

.critedge:                                        ; preds = %.lr.ph, %8, %1
  %.2 = phi i1 [ false, %1 ], [ %7, %8 ], [ %7, %.lr.ph ]
  ret i1 %.2
}

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,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass