; LLVM IR from Dimandragon/non-parametric-dsp :: alglib-cpp/src/ap.ll (ZN11alglib_impl15ae_nxpool_clearEPNS_9ae_nxpoolE)

; 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.alglib_impl::ae_nxpool" = type { i64, i64, i64, i64, %"struct.alglib_impl::ae_dyn_block", %"struct.alglib_impl::ae_lock", %"struct.alglib_impl::ae_dyn_block" }
%"struct.alglib_impl::ae_lock" = type { ptr, %"struct.alglib_impl::ae_dyn_block", i8 }
%"struct.alglib_impl::ae_dyn_block" = type { ptr, ptr, ptr, ptr }

; 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
declare dso_local void @_ZN11alglib_impl10ae_db_freeEPNS_12ae_dyn_blockE(ptr noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11alglib_impl15ae_nxpool_clearEPNS_9ae_nxpoolE(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  store i64 0, ptr %3, align 8, !tbaa !9
  br label %4

4:                                                ; preds = %18, %1
  %5 = load i64, ptr %3, align 8, !tbaa !9
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds %"struct.alglib_impl::ae_nxpool", ptr %6, i32 0, i32 3
  %8 = load i64, ptr %7, align 8, !tbaa !11
  %9 = icmp slt i64 %5, %8
  br i1 %9, label %11, label %10

10:                                               ; preds = %4
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  br label %21

11:                                               ; preds = %4
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = getelementptr inbounds %"struct.alglib_impl::ae_nxpool", ptr %12, i32 0, i32 4
  %14 = getelementptr inbounds %"struct.alglib_impl::ae_dyn_block", ptr %13, i32 0, i32 2
  %15 = load volatile ptr, ptr %14, align 8, !tbaa !16
  %16 = load i64, ptr %3, align 8, !tbaa !9
  %17 = getelementptr inbounds %"struct.alglib_impl::ae_dyn_block", ptr %15, i64 %16
  call void @_ZN11alglib_impl10ae_db_freeEPNS_12ae_dyn_blockE(ptr noundef %17)
  br label %18

18:                                               ; preds = %11
  %19 = load i64, ptr %3, align 8, !tbaa !9
  %20 = add nsw i64 %19, 1
  store i64 %20, ptr %3, align 8, !tbaa !9
  br label %4, !llvm.loop !17

21:                                               ; preds = %10
  %22 = load ptr, ptr %2, align 8, !tbaa !5
  %23 = getelementptr inbounds %"struct.alglib_impl::ae_nxpool", ptr %22, i32 0, i32 1
  store i64 0, ptr %23, align 8, !tbaa !19
  %24 = load ptr, ptr %2, align 8, !tbaa !5
  %25 = getelementptr inbounds %"struct.alglib_impl::ae_nxpool", ptr %24, i32 0, i32 3
  store i64 0, ptr %25, align 8, !tbaa !11
  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 24}
!12 = !{!"_ZTSN11alglib_impl9ae_nxpoolE", !10, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !13, i64 32, !14, i64 64, !13, i64 112}
!13 = !{!"_ZTSN11alglib_impl12ae_dyn_blockE", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!14 = !{!"_ZTSN11alglib_impl7ae_lockE", !6, i64 0, !13, i64 8, !15, i64 40}
!15 = !{!"bool", !7, i64 0}
!16 = !{!12, !6, i64 48}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}
!19 = !{!12, !10, i64 8}


; 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"

%"struct.alglib_impl::ae_dyn_block" = type { ptr, ptr, ptr, ptr }

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN11alglib_impl10ae_db_freeEPNS_12ae_dyn_blockE(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11alglib_impl15ae_nxpool_clearEPNS_9ae_nxpoolE(ptr noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 24
  %3 = load i64, ptr %2, align 8, !tbaa !5
  %4 = icmp sgt i64 %3, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 48
  br label %7

._crit_edge:                                      ; preds = %7, %1
  %6 = getelementptr inbounds i8, ptr %0, i64 8
  store i64 0, ptr %6, align 8, !tbaa !14
  store i64 0, ptr %2, align 8, !tbaa !5
  ret void

7:                                                ; preds = %.lr.ph, %7
  %.06 = phi i64 [ 0, %.lr.ph ], [ %10, %7 ]
  %8 = load volatile ptr, ptr %5, align 8, !tbaa !15
  %9 = getelementptr inbounds %"struct.alglib_impl::ae_dyn_block", ptr %8, i64 %.06
  tail call void @_ZN11alglib_impl10ae_db_freeEPNS_12ae_dyn_blockE(ptr noundef %9)
  %10 = add nuw nsw i64 %.06, 1
  %11 = load i64, ptr %2, align 8, !tbaa !5
  %12 = icmp slt i64 %10, %11
  br i1 %12, label %7, label %._crit_edge, !llvm.loop !16
}

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, !7, i64 24}
!6 = !{!"_ZTSN11alglib_impl9ae_nxpoolE", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !10, i64 32, !12, i64 64, !10, i64 112}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTSN11alglib_impl12ae_dyn_blockE", !11, i64 0, !11, i64 8, !11, i64 16, !11, i64 24}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!"_ZTSN11alglib_impl7ae_lockE", !11, i64 0, !10, i64 8, !13, i64 40}
!13 = !{!"bool", !8, i64 0}
!14 = !{!6, !7, i64 8}
!15 = !{!6, !11, i64 48}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}


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