; LLVM IR from AlgoGenesis/C :: Miscellaneous Algorithms/Multi-Tiered Caching Algorithm (MTC)

; 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"

%struct.Cache = type { ptr, i32, i32 }

; 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: nounwind uwtable
define dso_local void @add_to_cache(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.Cache, ptr %6, i32 0, i32 2
  %8 = load i32, ptr %7, align 4, !tbaa !11
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.Cache, ptr %9, i32 0, i32 1
  %11 = load i32, ptr %10, align 8, !tbaa !13
  %12 = icmp slt i32 %8, %11
  br i1 %12, label %13, label %24

13:                                               ; preds = %2
  %14 = load i32, ptr %4, align 4, !tbaa !9
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.Cache, ptr %15, i32 0, i32 0
  %17 = load ptr, ptr %16, align 8, !tbaa !14
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.Cache, ptr %18, i32 0, i32 2
  %20 = load i32, ptr %19, align 4, !tbaa !11
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %19, align 4, !tbaa !11
  %22 = sext i32 %20 to i64
  %23 = getelementptr inbounds i32, ptr %17, i64 %22
  store i32 %14, ptr %23, align 4, !tbaa !9
  br label %61

24:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 1, ptr %5, align 4, !tbaa !9
  br label %25

25:                                               ; preds = %47, %24
  %26 = load i32, ptr %5, align 4, !tbaa !9
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.Cache, ptr %27, i32 0, i32 1
  %29 = load i32, ptr %28, align 8, !tbaa !13
  %30 = icmp slt i32 %26, %29
  br i1 %30, label %32, label %31

31:                                               ; preds = %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %50

32:                                               ; preds = %25
  %33 = load ptr, ptr %3, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.Cache, ptr %33, i32 0, i32 0
  %35 = load ptr, ptr %34, align 8, !tbaa !14
  %36 = load i32, ptr %5, align 4, !tbaa !9
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds i32, ptr %35, i64 %37
  %39 = load i32, ptr %38, align 4, !tbaa !9
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.Cache, ptr %40, i32 0, i32 0
  %42 = load ptr, ptr %41, align 8, !tbaa !14
  %43 = load i32, ptr %5, align 4, !tbaa !9
  %44 = sub nsw i32 %43, 1
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds i32, ptr %42, i64 %45
  store i32 %39, ptr %46, align 4, !tbaa !9
  br label %47

47:                                               ; preds = %32
  %48 = load i32, ptr %5, align 4, !tbaa !9
  %49 = add nsw i32 %48, 1
  store i32 %49, ptr %5, align 4, !tbaa !9
  br label %25, !llvm.loop !15

50:                                               ; preds = %31
  %51 = load i32, ptr %4, align 4, !tbaa !9
  %52 = load ptr, ptr %3, align 8, !tbaa !5
  %53 = getelementptr inbounds %struct.Cache, ptr %52, i32 0, i32 0
  %54 = load ptr, ptr %53, align 8, !tbaa !14
  %55 = load ptr, ptr %3, align 8, !tbaa !5
  %56 = getelementptr inbounds %struct.Cache, ptr %55, i32 0, i32 1
  %57 = load i32, ptr %56, align 8, !tbaa !13
  %58 = sub nsw i32 %57, 1
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds i32, ptr %54, i64 %59
  store i32 %51, ptr %60, align 4, !tbaa !9
  br label %61

61:                                               ; preds = %50, %13
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 12}
!12 = !{!"Cache", !6, i64 0, !10, i64 8, !10, i64 12}
!13 = !{!12, !10, i64 8}
!14 = !{!12, !6, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"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: nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local void @add_to_cache(ptr nocapture noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 12
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  %6 = load i32, ptr %5, align 8, !tbaa !11
  %7 = icmp slt i32 %4, %6
  br i1 %7, label %9, label %.preheader

.preheader:                                       ; preds = %2
  %8 = icmp sgt i32 %6, 1
  %.pre = load ptr, ptr %0, align 8, !tbaa !12
  br i1 %8, label %.lr.ph, label %.preheader.._crit_edge_crit_edge

.preheader.._crit_edge_crit_edge:                 ; preds = %.preheader
  %.pre19 = sext i32 %6 to i64
  br label %._crit_edge

9:                                                ; preds = %2
  %10 = load ptr, ptr %0, align 8, !tbaa !12
  %11 = add nsw i32 %4, 1
  store i32 %11, ptr %3, align 4, !tbaa !5
  %12 = sext i32 %4 to i64
  %13 = getelementptr inbounds i32, ptr %10, i64 %12
  br label %22

._crit_edge:                                      ; preds = %.lr.ph, %.preheader.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre19, %.preheader.._crit_edge_crit_edge ], [ %20, %.lr.ph ]
  %14 = getelementptr i32, ptr %.pre, i64 %.pre-phi
  %15 = getelementptr i8, ptr %14, i64 -4
  br label %22

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 1, %.preheader ]
  %16 = getelementptr inbounds i32, ptr %.pre, i64 %indvars.iv
  %17 = load i32, ptr %16, align 4, !tbaa !13
  %18 = getelementptr i8, ptr %16, i64 -4
  store i32 %17, ptr %18, align 4, !tbaa !13
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %19 = load i32, ptr %5, align 8, !tbaa !11
  %20 = sext i32 %19 to i64
  %21 = icmp slt i64 %indvars.iv.next, %20
  br i1 %21, label %.lr.ph, label %._crit_edge, !llvm.loop !14

22:                                               ; preds = %._crit_edge, %9
  %.sink = phi ptr [ %15, %._crit_edge ], [ %13, %9 ]
  store i32 %1, ptr %.sink, align 4, !tbaa !13
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) 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 12}
!6 = !{!"Cache", !7, i64 0, !10, i64 8, !10, i64 12}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !7, i64 0}
!13 = !{!10, !10, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: BDCEPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass