; LLVM IR from HRI-EU/Rcs :: src/RcsCore/Rcs_filters.ll (ZN3Rcs16SecondOrderLPFND7iterateEPdPKdS3_)

; 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.Rcs::SecondOrderLPFND" = type { ptr, ptr, i64 }

; 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 uwtable
define dso_local void @_ZN3Rcs16SecondOrderLPFND7iterateEPdPKdS3_(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef %1, ptr noundef %2, ptr noundef %3) unnamed_addr #1 align 2 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i64, 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
  store ptr %3, ptr %8, align 8, !tbaa !5
  %10 = load ptr, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  store i64 0, ptr %9, align 8, !tbaa !9
  br label %11

11:                                               ; preds = %38, %4
  %12 = load i64, ptr %9, align 8, !tbaa !9
  %13 = getelementptr inbounds %"class.Rcs::SecondOrderLPFND", ptr %10, i32 0, i32 2
  %14 = load i64, ptr %13, align 8, !tbaa !11
  %15 = icmp ult i64 %12, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  br label %41

17:                                               ; preds = %11
  %18 = getelementptr inbounds %"class.Rcs::SecondOrderLPFND", ptr %10, i32 0, i32 1
  %19 = load ptr, ptr %18, align 8, !tbaa !13
  %20 = load i64, ptr %9, align 8, !tbaa !9
  %21 = getelementptr inbounds ptr, ptr %19, i64 %20
  %22 = load ptr, ptr %21, align 8, !tbaa !5
  %23 = load ptr, ptr %7, align 8, !tbaa !5
  %24 = load i64, ptr %9, align 8, !tbaa !9
  %25 = getelementptr inbounds double, ptr %23, i64 %24
  %26 = load double, ptr %25, align 8, !tbaa !14
  %27 = load ptr, ptr %8, align 8, !tbaa !5
  %28 = load i64, ptr %9, align 8, !tbaa !9
  %29 = getelementptr inbounds double, ptr %27, i64 %28
  %30 = load double, ptr %29, align 8, !tbaa !14
  %31 = load ptr, ptr %22, align 8, !tbaa !16
  %32 = getelementptr inbounds ptr, ptr %31, i64 5
  %33 = load ptr, ptr %32, align 8
  %34 = call noundef double %33(ptr noundef nonnull align 8 dereferenceable(56) %22, double noundef %26, double noundef %30)
  %35 = load ptr, ptr %6, align 8, !tbaa !5
  %36 = load i64, ptr %9, align 8, !tbaa !9
  %37 = getelementptr inbounds double, ptr %35, i64 %36
  store double %34, ptr %37, align 8, !tbaa !14
  br label %38

38:                                               ; preds = %17
  %39 = load i64, ptr %9, align 8, !tbaa !9
  %40 = add i64 %39, 1
  store i64 %40, ptr %9, align 8, !tbaa !9
  br label %11, !llvm.loop !18

41:                                               ; preds = %16
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 16}
!12 = !{!"_ZTSN3Rcs16SecondOrderLPFNDE", !6, i64 8, !10, i64 16}
!13 = !{!12, !6, i64 8}
!14 = !{!15, !15, i64 0}
!15 = !{!"double", !7, i64 0}
!16 = !{!17, !17, i64 0}
!17 = !{!"vtable pointer", !8, i64 0}
!18 = distinct !{!18, !19}
!19 = !{!"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 uwtable
define dso_local void @_ZN3Rcs16SecondOrderLPFND7iterateEPdPKdS3_(ptr nocapture noundef nonnull readonly align 8 dereferenceable(24) %0, ptr nocapture noundef writeonly %1, ptr nocapture noundef readonly %2, ptr nocapture noundef readonly %3) unnamed_addr #0 align 2 {
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  %6 = load i64, ptr %5, align 8, !tbaa !5
  %.not = icmp eq i64 %6, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %4
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  br label %8

._crit_edge:                                      ; preds = %8, %4
  ret void

8:                                                ; preds = %.lr.ph, %8
  %.09 = phi i64 [ 0, %.lr.ph ], [ %21, %8 ]
  %9 = load ptr, ptr %7, align 8, !tbaa !11
  %10 = getelementptr inbounds ptr, ptr %9, i64 %.09
  %11 = load ptr, ptr %10, align 8, !tbaa !12
  %12 = getelementptr inbounds double, ptr %2, i64 %.09
  %13 = load double, ptr %12, align 8, !tbaa !13
  %14 = getelementptr inbounds double, ptr %3, i64 %.09
  %15 = load double, ptr %14, align 8, !tbaa !13
  %16 = load ptr, ptr %11, align 8, !tbaa !15
  %17 = getelementptr inbounds i8, ptr %16, i64 40
  %18 = load ptr, ptr %17, align 8
  %19 = tail call noundef double %18(ptr noundef nonnull align 8 dereferenceable(56) %11, double noundef %13, double noundef %15)
  %20 = getelementptr inbounds double, ptr %1, i64 %.09
  store double %19, ptr %20, align 8, !tbaa !13
  %21 = add nuw i64 %.09, 1
  %22 = load i64, ptr %5, align 8, !tbaa !5
  %23 = icmp ult i64 %21, %22
  br i1 %23, label %8, label %._crit_edge, !llvm.loop !17
}

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, !10, i64 16}
!6 = !{!"_ZTSN3Rcs16SecondOrderLPFNDE", !7, i64 8, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !7, i64 8}
!12 = !{!7, !7, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"double", !8, i64 0}
!15 = !{!16, !16, i64 0}
!16 = !{!"vtable pointer", !9, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}


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