; LLVM IR from atlantis13579/Riemann :: Src/Geometry (Spline)

; 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.Maths::TVector3" = type { float, float, float }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIN5Maths8TVector3IfEESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(12) ptr @_ZNKSt6vectorIN5Maths8TVector3IfEESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef float @_ZN7Riemann22CalculateSegmentLengthERKSt6vectorIN5Maths8TVector3IfEESaIS3_EE(ptr noundef nonnull align 8 dereferenceable(24) %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca float, align 4
  %4 = alloca i64, align 8
  %5 = alloca float, align 4
  %6 = alloca %"class.Maths::TVector3", align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  store float 0.000000e+00, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #5
  store i64 0, ptr %4, align 8, !tbaa !11
  br label %7

7:                                                ; preds = %26, %1
  %8 = load i64, ptr %4, align 8, !tbaa !11
  %9 = load ptr, ptr %2, align 8, !tbaa !5
  %10 = call noundef i64 @_ZNKSt6vectorIN5Maths8TVector3IfEESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #5
  %11 = sub i64 %10, 1
  %12 = icmp ult i64 %8, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #5
  br label %29

14:                                               ; preds = %7
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  call void @llvm.lifetime.start.p0(i64 12, ptr %6) #5
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = load i64, ptr %4, align 8, !tbaa !11
  %17 = add i64 %16, 1
  %18 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNKSt6vectorIN5Maths8TVector3IfEESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %15, i64 noundef %17) #5
  %19 = load ptr, ptr %2, align 8, !tbaa !5
  %20 = load i64, ptr %4, align 8, !tbaa !11
  %21 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNKSt6vectorIN5Maths8TVector3IfEESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %19, i64 noundef %20) #5
  call void @_ZNK5Maths8TVector3IfEmiERKS1_(ptr dead_on_unwind writable sret(%"class.Maths::TVector3") align 4 %6, ptr noundef nonnull align 4 dereferenceable(12) %18, ptr noundef nonnull align 4 dereferenceable(12) %21)
  %22 = call noundef float @_ZNK5Maths8TVector3IfE6LengthEv(ptr noundef nonnull align 4 dereferenceable(12) %6)
  call void @llvm.lifetime.end.p0(i64 12, ptr %6) #5
  store float %22, ptr %5, align 4, !tbaa !9
  %23 = load float, ptr %5, align 4, !tbaa !9
  %24 = load float, ptr %3, align 4, !tbaa !9
  %25 = fadd float %24, %23
  store float %25, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  br label %26

26:                                               ; preds = %14
  %27 = load i64, ptr %4, align 8, !tbaa !11
  %28 = add i64 %27, 1
  store i64 %28, ptr %4, align 8, !tbaa !11
  br label %7, !llvm.loop !13

29:                                               ; preds = %13
  %30 = load float, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  ret float %30
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZNK5Maths8TVector3IfEmiERKS1_(ptr dead_on_unwind noalias writable sret(%"class.Maths::TVector3") align 4, ptr noundef nonnull align 4 dereferenceable(12), ptr noundef nonnull align 4 dereferenceable(12)) #3 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef float @_ZNK5Maths8TVector3IfE6LengthEv(ptr noundef nonnull align 4 dereferenceable(12)) #4 align 2

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 = { inlinehint 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 #4 = { 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 #5 = { 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 = !{!"float", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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.Maths::TVector3" = type { float, float, float }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIN5Maths8TVector3IfEESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(12) ptr @_ZNKSt6vectorIN5Maths8TVector3IfEESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef float @_ZN7Riemann22CalculateSegmentLengthERKSt6vectorIN5Maths8TVector3IfEESaIS3_EE(ptr noundef nonnull align 8 dereferenceable(24) %0) local_unnamed_addr #2 {
  %2 = alloca %"class.Maths::TVector3", align 4
  %3 = tail call noundef i64 @_ZNKSt6vectorIN5Maths8TVector3IfEESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #5
  %.not = icmp eq i64 %3, 1
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %1
  %.0.lcssa = phi float [ 0.000000e+00, %1 ], [ %8, %.lr.ph ]
  ret float %.0.lcssa

.lr.ph:                                           ; preds = %1, %.lr.ph
  %.011 = phi float [ %8, %.lr.ph ], [ 0.000000e+00, %1 ]
  %.0910 = phi i64 [ %4, %.lr.ph ], [ 0, %1 ]
  call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %2) #5
  %4 = add nuw i64 %.0910, 1
  %5 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNKSt6vectorIN5Maths8TVector3IfEESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %4) #5
  %6 = call noundef nonnull align 4 dereferenceable(12) ptr @_ZNKSt6vectorIN5Maths8TVector3IfEESaIS2_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %.0910) #5
  call void @_ZNK5Maths8TVector3IfEmiERKS1_(ptr dead_on_unwind nonnull writable sret(%"class.Maths::TVector3") align 4 %2, ptr noundef nonnull align 4 dereferenceable(12) %5, ptr noundef nonnull align 4 dereferenceable(12) %6)
  %7 = call noundef float @_ZNK5Maths8TVector3IfE6LengthEv(ptr noundef nonnull align 4 dereferenceable(12) %2)
  call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %2) #5
  %8 = fadd float %.011, %7
  %9 = call noundef i64 @_ZNKSt6vectorIN5Maths8TVector3IfEESaIS2_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #5
  %10 = add i64 %9, -1
  %11 = icmp ult i64 %4, %10
  br i1 %11, label %.lr.ph, label %._crit_edge, !llvm.loop !5
}

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZNK5Maths8TVector3IfEmiERKS1_(ptr dead_on_unwind noalias writable sret(%"class.Maths::TVector3") align 4, ptr noundef nonnull align 4 dereferenceable(12), ptr noundef nonnull align 4 dereferenceable(12)) local_unnamed_addr #3 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef float @_ZNK5Maths8TVector3IfE6LengthEv(ptr noundef nonnull align 4 dereferenceable(12)) local_unnamed_addr #4 align 2

attributes #0 = { mustprogress 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 = { inlinehint 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 #4 = { 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 #5 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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