; LLVM IR from HRI-EU/Rcs :: src/RcsCore/Rcs_filters.ll (ZN3Rcs16SecondOrderLPFND7iterateEPd)

; 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 @_ZN3Rcs16SecondOrderLPFND7iterateEPd(ptr noundef nonnull align 8 dereferenceable(24) %0, ptr noundef %1) unnamed_addr #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  %6 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  store i64 0, ptr %5, align 8, !tbaa !9
  br label %7

7:                                                ; preds = %35, %2
  %8 = load i64, ptr %5, align 8, !tbaa !9
  %9 = getelementptr inbounds %"class.Rcs::SecondOrderLPFND", ptr %6, i32 0, i32 2
  %10 = load i64, ptr %9, align 8, !tbaa !11
  %11 = icmp ult i64 %8, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  br label %38

13:                                               ; preds = %7
  %14 = getelementptr inbounds %"class.Rcs::SecondOrderLPFND", ptr %6, i32 0, i32 1
  %15 = load ptr, ptr %14, align 8, !tbaa !13
  %16 = load i64, ptr %5, align 8, !tbaa !9
  %17 = getelementptr inbounds ptr, ptr %15, i64 %16
  %18 = load ptr, ptr %17, align 8, !tbaa !5
  %19 = getelementptr inbounds %"class.Rcs::SecondOrderLPFND", ptr %6, i32 0, i32 1
  %20 = load ptr, ptr %19, align 8, !tbaa !13
  %21 = load i64, ptr %5, align 8, !tbaa !9
  %22 = getelementptr inbounds ptr, ptr %20, i64 %21
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  %24 = load ptr, ptr %23, align 8, !tbaa !14
  %25 = getelementptr inbounds ptr, ptr %24, i64 15
  %26 = load ptr, ptr %25, align 8
  %27 = call noundef double %26(ptr noundef nonnull align 8 dereferenceable(56) %23)
  %28 = load ptr, ptr %18, align 8, !tbaa !14
  %29 = getelementptr inbounds ptr, ptr %28, i64 6
  %30 = load ptr, ptr %29, align 8
  %31 = call noundef double %30(ptr noundef nonnull align 8 dereferenceable(56) %18, double noundef %27)
  %32 = load ptr, ptr %4, align 8, !tbaa !5
  %33 = load i64, ptr %5, align 8, !tbaa !9
  %34 = getelementptr inbounds double, ptr %32, i64 %33
  store double %31, ptr %34, align 8, !tbaa !16
  br label %35

35:                                               ; preds = %13
  %36 = load i64, ptr %5, align 8, !tbaa !9
  %37 = add i64 %36, 1
  store i64 %37, ptr %5, align 8, !tbaa !9
  br label %7, !llvm.loop !18

38:                                               ; preds = %12
  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 = !{!"vtable pointer", !8, i64 0}
!16 = !{!17, !17, i64 0}
!17 = !{!"double", !7, 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 @_ZN3Rcs16SecondOrderLPFND7iterateEPd(ptr nocapture noundef nonnull readonly align 8 dereferenceable(24) %0, ptr nocapture noundef writeonly %1) unnamed_addr #0 align 2 {
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %.not = icmp eq i64 %4, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  br label %6

._crit_edge:                                      ; preds = %6, %2
  ret void

6:                                                ; preds = %.lr.ph, %6
  %.06 = phi i64 [ 0, %.lr.ph ], [ %19, %6 ]
  %7 = load ptr, ptr %5, align 8, !tbaa !11
  %8 = getelementptr inbounds ptr, ptr %7, i64 %.06
  %9 = load ptr, ptr %8, align 8, !tbaa !12
  %10 = load ptr, ptr %9, align 8, !tbaa !13
  %11 = getelementptr inbounds i8, ptr %10, i64 120
  %12 = load ptr, ptr %11, align 8
  %13 = tail call noundef double %12(ptr noundef nonnull align 8 dereferenceable(56) %9)
  %14 = load ptr, ptr %9, align 8, !tbaa !13
  %15 = getelementptr inbounds i8, ptr %14, i64 48
  %16 = load ptr, ptr %15, align 8
  %17 = tail call noundef double %16(ptr noundef nonnull align 8 dereferenceable(56) %9, double noundef %13)
  %18 = getelementptr inbounds double, ptr %1, i64 %.06
  store double %17, ptr %18, align 8, !tbaa !15
  %19 = add nuw i64 %.06, 1
  %20 = load i64, ptr %3, align 8, !tbaa !5
  %21 = icmp ult i64 %19, %20
  br i1 %21, label %6, 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 = !{!"vtable pointer", !9, i64 0}
!15 = !{!16, !16, i64 0}
!16 = !{!"double", !8, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}


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