; LLVM IR from Dimandragon/non-parametric-dsp :: alglib-cpp/src (alglibinternal)

; 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_vector" = type { i64, i64, i8, %"struct.alglib_impl::ae_dyn_block", %union.anon }
%"struct.alglib_impl::ae_dyn_block" = type { ptr, ptr, ptr, ptr }
%union.anon = type { ptr }

declare noundef i64 @_ZN11alglib_impl18ae_weak_atomic_casEPlll(ptr noundef, i64 noundef, i64 noundef) #0

declare noundef i64 @_ZN11alglib_impl23ae_unsafe_volatile_readEPKl(ptr noundef) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11alglib_impl22weakatomicacquirelockvEPNS_9ae_vectorElllPNS_8ae_stateE(ptr noundef %0, i64 noundef %1, i64 noundef %2, i64 noundef %3, ptr noundef %4) #1 {
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  %10 = alloca ptr, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i64 %1, ptr %7, align 8, !tbaa !9
  store i64 %2, ptr %8, align 8, !tbaa !9
  store i64 %3, ptr %9, align 8, !tbaa !9
  store ptr %4, ptr %10, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %34, %5
  br label %12

12:                                               ; preds = %21, %11
  %13 = load ptr, ptr %6, align 8, !tbaa !5
  %14 = getelementptr inbounds %"struct.alglib_impl::ae_vector", ptr %13, i32 0, i32 4
  %15 = load ptr, ptr %14, align 8, !tbaa !11
  %16 = load i64, ptr %7, align 8, !tbaa !9
  %17 = getelementptr inbounds i64, ptr %15, i64 %16
  %18 = call noundef i64 @_ZN11alglib_impl23ae_unsafe_volatile_readEPKl(ptr noundef %17)
  %19 = load i64, ptr %8, align 8, !tbaa !9
  %20 = icmp ne i64 %18, %19
  br i1 %20, label %21, label %22

21:                                               ; preds = %12
  br label %12, !llvm.loop !12

22:                                               ; preds = %12
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = getelementptr inbounds %"struct.alglib_impl::ae_vector", ptr %23, i32 0, i32 4
  %25 = load ptr, ptr %24, align 8, !tbaa !11
  %26 = load i64, ptr %7, align 8, !tbaa !9
  %27 = getelementptr inbounds i64, ptr %25, i64 %26
  %28 = load i64, ptr %8, align 8, !tbaa !9
  %29 = load i64, ptr %9, align 8, !tbaa !9
  %30 = call noundef i64 @_ZN11alglib_impl18ae_weak_atomic_casEPlll(ptr noundef %27, i64 noundef %28, i64 noundef %29)
  %31 = load i64, ptr %8, align 8, !tbaa !9
  %32 = icmp eq i64 %30, %31
  br i1 %32, label %33, label %34

33:                                               ; preds = %22
  ret void

34:                                               ; preds = %22
  br label %11, !llvm.loop !14
}

attributes #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 #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" }

!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 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = distinct !{!14, !13}


; 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"

declare noundef i64 @_ZN11alglib_impl18ae_weak_atomic_casEPlll(ptr noundef, i64 noundef, i64 noundef) local_unnamed_addr #0

declare noundef i64 @_ZN11alglib_impl23ae_unsafe_volatile_readEPKl(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11alglib_impl22weakatomicacquirelockvEPNS_9ae_vectorElllPNS_8ae_stateE(ptr nocapture noundef readonly %0, i64 noundef %1, i64 noundef %2, i64 noundef %3, ptr nocapture noundef readnone %4) local_unnamed_addr #1 {
  %6 = getelementptr inbounds i8, ptr %0, i64 56
  br label %7

7:                                                ; preds = %.backedge, %5
  %8 = load ptr, ptr %6, align 8, !tbaa !5
  %9 = getelementptr inbounds i64, ptr %8, i64 %1
  %10 = tail call noundef i64 @_ZN11alglib_impl23ae_unsafe_volatile_readEPKl(ptr noundef %9)
  %.not = icmp eq i64 %10, %2
  br i1 %.not, label %11, label %.backedge

.backedge:                                        ; preds = %7, %11
  br label %7, !llvm.loop !8

11:                                               ; preds = %7
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  %13 = getelementptr inbounds i64, ptr %12, i64 %1
  %14 = tail call noundef i64 @_ZN11alglib_impl18ae_weak_atomic_casEPlll(ptr noundef %13, i64 noundef %2, i64 noundef %3)
  %15 = icmp eq i64 %14, %2
  br i1 %15, label %16, label %.backedge

16:                                               ; preds = %11
  ret void
}

attributes #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 #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" }

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InstCombinePass,LCSSAPass,LICMPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass