; LLVM IR from venumb/ZSPACE :: cpp/depends/alglib/cpp/src (alglibmisc)

; 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.0 }
%"struct.alglib_impl::ae_dyn_block" = type { ptr, ptr, ptr, ptr }
%union.anon.0 = type { 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 nounwind uwtable
define dso_local void @_ZN11alglib_impl11xdebugi1negEPNS_9ae_vectorEPNS_8ae_stateE(ptr noundef %0, ptr noundef %1) #1 {
  %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
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #2
  store i64 0, ptr %5, align 8, !tbaa !9
  br label %6

6:                                                ; preds = %26, %2
  %7 = load i64, ptr %5, align 8, !tbaa !9
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %"struct.alglib_impl::ae_vector", ptr %8, i32 0, i32 0
  %10 = load i64, ptr %9, align 8, !tbaa !11
  %11 = sub nsw i64 %10, 1
  %12 = icmp sle i64 %7, %11
  br i1 %12, label %13, label %29

13:                                               ; preds = %6
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = getelementptr inbounds %"struct.alglib_impl::ae_vector", ptr %14, i32 0, i32 4
  %16 = load ptr, ptr %15, align 8, !tbaa !15
  %17 = load i64, ptr %5, align 8, !tbaa !9
  %18 = getelementptr inbounds i64, ptr %16, i64 %17
  %19 = load i64, ptr %18, align 8, !tbaa !9
  %20 = sub nsw i64 0, %19
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = getelementptr inbounds %"struct.alglib_impl::ae_vector", ptr %21, i32 0, i32 4
  %23 = load ptr, ptr %22, align 8, !tbaa !15
  %24 = load i64, ptr %5, align 8, !tbaa !9
  %25 = getelementptr inbounds i64, ptr %23, i64 %24
  store i64 %20, ptr %25, align 8, !tbaa !9
  br label %26

26:                                               ; preds = %13
  %27 = load i64, ptr %5, align 8, !tbaa !9
  %28 = add nsw i64 %27, 1
  store i64 %28, ptr %5, align 8, !tbaa !9
  br label %6, !llvm.loop !16

29:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_ZTSN11alglib_impl9ae_vectorE", !10, i64 0, !10, i64 8, !13, i64 16, !14, i64 24, !7, i64 56}
!13 = !{!"bool", !7, i64 0}
!14 = !{!"_ZTSN11alglib_impl12ae_dyn_blockE", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!15 = !{!7, !7, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"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 nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local void @_ZN11alglib_impl11xdebugi1negEPNS_9ae_vectorEPNS_8ae_stateE(ptr nocapture noundef readonly %0, ptr nocapture noundef readnone %1) local_unnamed_addr #0 {
  %3 = load i64, ptr %0, align 8, !tbaa !5
  %.not.not6 = icmp sgt i64 %3, 0
  br i1 %.not.not6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2
  %4 = getelementptr inbounds i8, ptr %0, i64 56
  br label %5

5:                                                ; preds = %.lr.ph, %5
  %.07 = phi i64 [ 0, %.lr.ph ], [ %10, %5 ]
  %6 = load ptr, ptr %4, align 8, !tbaa !13
  %7 = getelementptr inbounds i64, ptr %6, i64 %.07
  %8 = load i64, ptr %7, align 8, !tbaa !14
  %9 = sub nsw i64 0, %8
  store i64 %9, ptr %7, align 8, !tbaa !14
  %10 = add nuw nsw i64 %.07, 1
  %11 = load i64, ptr %0, align 8, !tbaa !5
  %.not.not = icmp slt i64 %10, %11
  br i1 %.not.not, label %5, label %._crit_edge, !llvm.loop !15

._crit_edge:                                      ; preds = %5, %2
  ret void
}

attributes #0 = { mustprogress 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, !7, i64 0}
!6 = !{!"_ZTSN11alglib_impl9ae_vectorE", !7, i64 0, !7, i64 8, !10, i64 16, !11, i64 24, !8, i64 56}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"bool", !8, i64 0}
!11 = !{!"_ZTSN11alglib_impl12ae_dyn_blockE", !12, i64 0, !12, i64 8, !12, i64 16, !12, i64 24}
!12 = !{!"any pointer", !8, i64 0}
!13 = !{!8, !8, i64 0}
!14 = !{!7, !7, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


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