; LLVM IR from sgtlaugh/algovault :: code_library/lagrange_interpolation.ll (Z9get_termsRKSt6vectorIiSaIiEEiii)

; 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.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%struct.Lagrange = type { %"class.std::vector", %"class.std::vector", i32, i32 }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z9get_termsRKSt6vectorIiSaIiEEiii(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) #0 personality ptr @__gxx_personality_v0 {
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca %struct.Lagrange, align 8
  %12 = alloca i1, align 1
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca ptr, align 8
  %16 = alloca i32, align 4
  store ptr %0, ptr %6, align 8
  store ptr %1, ptr %7, align 8, !tbaa !5
  store i32 %2, ptr %8, align 4, !tbaa !9
  store i32 %3, ptr %9, align 4, !tbaa !9
  store i32 %4, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 56, ptr %11) #4
  %17 = load ptr, ptr %7, align 8, !tbaa !5
  %18 = load i32, ptr %8, align 4, !tbaa !9
  call void @_ZN8LagrangeC2ERKSt6vectorIiSaIiEEi(ptr noundef nonnull align 8 dereferenceable(56) %11, ptr noundef nonnull align 8 dereferenceable(24) %17, i32 noundef %18)
  store i1 false, ptr %12, align 1
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #4
  %19 = load i32, ptr %9, align 4, !tbaa !9
  store i32 %19, ptr %13, align 4, !tbaa !9
  br label %20

20:                                               ; preds = %31, %5
  %21 = load i32, ptr %13, align 4, !tbaa !9
  %22 = load i32, ptr %10, align 4, !tbaa !9
  %23 = icmp sle i32 %21, %22
  br i1 %23, label %25, label %24

24:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #4
  br label %38

25:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #4
  %26 = load i32, ptr %13, align 4, !tbaa !9
  %27 = sext i32 %26 to i64
  %28 = invoke noundef i32 @_ZN8Lagrange11interpolateEx(ptr noundef nonnull align 8 dereferenceable(56) %11, i64 noundef %27)
          to label %29 unwind label %34

29:                                               ; preds = %25
  store i32 %28, ptr %14, align 4, !tbaa !9
  invoke void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 4 dereferenceable(4) %14)
          to label %30 unwind label %34

30:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  br label %31

31:                                               ; preds = %30
  %32 = load i32, ptr %13, align 4, !tbaa !9
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %13, align 4, !tbaa !9
  br label %20, !llvm.loop !11

34:                                               ; preds = %29, %25
  %35 = landingpad { ptr, i32 }
          cleanup
  %36 = extractvalue { ptr, i32 } %35, 0
  store ptr %36, ptr %15, align 8
  %37 = extractvalue { ptr, i32 } %35, 1
  store i32 %37, ptr %16, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  call void @_ZN8LagrangeD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %11) #4
  call void @llvm.lifetime.end.p0(i64 56, ptr %11) #4
  br label %42

38:                                               ; preds = %24
  store i1 true, ptr %12, align 1
  %39 = load i1, ptr %12, align 1
  br i1 %39, label %41, label %40

40:                                               ; preds = %38
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  br label %41

41:                                               ; preds = %40, %38
  call void @_ZN8LagrangeD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %11) #4
  call void @llvm.lifetime.end.p0(i64 56, ptr %11) #4
  ret void

42:                                               ; preds = %34
  %43 = load ptr, ptr %15, align 8
  %44 = load i32, ptr %16, align 4
  %45 = insertvalue { ptr, i32 } poison, ptr %43, 0
  %46 = insertvalue { ptr, i32 } %45, i32 %44, 1
  resume { ptr, i32 } %46
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN8LagrangeC2ERKSt6vectorIiSaIiEEi(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 8 dereferenceable(24), i32 noundef) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN8Lagrange11interpolateEx(ptr noundef nonnull align 8 dereferenceable(56), i64 noundef) #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN8LagrangeD2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #3 align 2

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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { inlinehint 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 #4 = { 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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%struct.Lagrange = type { %"class.std::vector", %"class.std::vector", i32, i32 }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z9get_termsRKSt6vectorIiSaIiEEiii(ptr dead_on_unwind noalias writable sret(%"class.std::vector") align 8 %0, ptr noundef nonnull align 8 dereferenceable(24) %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %6 = alloca %struct.Lagrange, align 8
  %7 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 56, ptr nonnull %6) #4
  call void @_ZN8LagrangeC2ERKSt6vectorIiSaIiEEi(ptr noundef nonnull align 8 dereferenceable(56) %6, ptr noundef nonnull align 8 dereferenceable(24) %1, i32 noundef %2)
  call void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  %.not9 = icmp sgt i32 %3, %4
  br i1 %.not9, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %5
  %8 = sext i32 %3 to i64
  %9 = add i32 %4, 1
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %12
  %indvars.iv = phi i64 [ %8, %.lr.ph.preheader ], [ %indvars.iv.next, %12 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %7) #4
  %10 = invoke noundef i32 @_ZN8Lagrange11interpolateEx(ptr noundef nonnull align 8 dereferenceable(56) %6, i64 noundef %indvars.iv)
          to label %11 unwind label %13

11:                                               ; preds = %.lr.ph
  store i32 %10, ptr %7, align 4, !tbaa !5
  invoke void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef nonnull align 4 dereferenceable(4) %7)
          to label %12 unwind label %13

12:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #4
  %indvars.iv.next = add nsw i64 %indvars.iv, 1
  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
  %exitcond.not = icmp eq i32 %9, %lftr.wideiv
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

13:                                               ; preds = %11, %.lr.ph
  %14 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %7) #4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  call void @_ZN8LagrangeD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %6) #4
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %6) #4
  resume { ptr, i32 } %14

._crit_edge:                                      ; preds = %12, %5
  call void @_ZN8LagrangeD2Ev(ptr noundef nonnull align 8 dereferenceable(56) %6) #4
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %6) #4
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN8LagrangeC2ERKSt6vectorIiSaIiEEi(ptr noundef nonnull align 8 dereferenceable(56), ptr noundef nonnull align 8 dereferenceable(24), i32 noundef) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backEOi(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN8Lagrange11interpolateEx(ptr noundef nonnull align 8 dereferenceable(56), i64 noundef) local_unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZN8LagrangeD2Ev(ptr noundef nonnull align 8 dereferenceable(56)) unnamed_addr #3 align 2

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" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { inlinehint 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 #4 = { 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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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