; 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_matrix" = type { i64, i64, i64, i64, i8, %"struct.alglib_impl::ae_dyn_block", %union.anon.1 }
%"struct.alglib_impl::ae_dyn_block" = type { ptr, ptr, ptr, ptr }
%union.anon.1 = 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_impl11xdebugr2negEPNS_9ae_matrixEPNS_8ae_stateE(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = 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
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  store i64 0, ptr %5, align 8, !tbaa !9
  br label %7

7:                                                ; preds = %45, %2
  %8 = load i64, ptr %5, align 8, !tbaa !9
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %"struct.alglib_impl::ae_matrix", ptr %9, i32 0, i32 0
  %11 = load i64, ptr %10, align 8, !tbaa !11
  %12 = sub nsw i64 %11, 1
  %13 = icmp sle i64 %8, %12
  br i1 %13, label %14, label %48

14:                                               ; preds = %7
  store i64 0, ptr %6, align 8, !tbaa !9
  br label %15

15:                                               ; preds = %41, %14
  %16 = load i64, ptr %6, align 8, !tbaa !9
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = getelementptr inbounds %"struct.alglib_impl::ae_matrix", ptr %17, i32 0, i32 1
  %19 = load i64, ptr %18, align 8, !tbaa !15
  %20 = sub nsw i64 %19, 1
  %21 = icmp sle i64 %16, %20
  br i1 %21, label %22, label %44

22:                                               ; preds = %15
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = getelementptr inbounds %"struct.alglib_impl::ae_matrix", ptr %23, i32 0, i32 6
  %25 = load ptr, ptr %24, align 8, !tbaa !16
  %26 = load i64, ptr %5, align 8, !tbaa !9
  %27 = getelementptr inbounds ptr, ptr %25, i64 %26
  %28 = load ptr, ptr %27, align 8, !tbaa !5
  %29 = load i64, ptr %6, align 8, !tbaa !9
  %30 = getelementptr inbounds double, ptr %28, i64 %29
  %31 = load double, ptr %30, align 8, !tbaa !17
  %32 = fneg double %31
  %33 = load ptr, ptr %3, align 8, !tbaa !5
  %34 = getelementptr inbounds %"struct.alglib_impl::ae_matrix", ptr %33, i32 0, i32 6
  %35 = load ptr, ptr %34, align 8, !tbaa !16
  %36 = load i64, ptr %5, align 8, !tbaa !9
  %37 = getelementptr inbounds ptr, ptr %35, i64 %36
  %38 = load ptr, ptr %37, align 8, !tbaa !5
  %39 = load i64, ptr %6, align 8, !tbaa !9
  %40 = getelementptr inbounds double, ptr %38, i64 %39
  store double %32, ptr %40, align 8, !tbaa !17
  br label %41

41:                                               ; preds = %22
  %42 = load i64, ptr %6, align 8, !tbaa !9
  %43 = add nsw i64 %42, 1
  store i64 %43, ptr %6, align 8, !tbaa !9
  br label %15, !llvm.loop !19

44:                                               ; preds = %15
  br label %45

45:                                               ; preds = %44
  %46 = load i64, ptr %5, align 8, !tbaa !9
  %47 = add nsw i64 %46, 1
  store i64 %47, ptr %5, align 8, !tbaa !9
  br label %7, !llvm.loop !21

48:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  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_matrixE", !10, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !13, i64 32, !14, i64 40, !7, i64 72}
!13 = !{!"bool", !7, i64 0}
!14 = !{!"_ZTSN11alglib_impl12ae_dyn_blockE", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!15 = !{!12, !10, i64 8}
!16 = !{!7, !7, i64 0}
!17 = !{!18, !18, i64 0}
!18 = !{!"double", !7, i64 0}
!19 = distinct !{!19, !20}
!20 = !{!"llvm.loop.mustprogress"}
!21 = distinct !{!21, !20}


; 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_impl11xdebugr2negEPNS_9ae_matrixEPNS_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.not15 = icmp sgt i64 %3, 0
  br i1 %.not.not15, label %.preheader.lr.ph, label %._crit_edge17

.preheader.lr.ph:                                 ; preds = %2
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load i64, ptr %4, align 8, !tbaa !13
  %.not.not1213 = icmp sgt i64 %5, 0
  %6 = getelementptr inbounds i8, ptr %0, i64 72
  br i1 %.not.not1213, label %.preheader.us.preheader, label %._crit_edge17

.preheader.us.preheader:                          ; preds = %.preheader.lr.ph
  %xtraiter = and i64 %5, 1
  %7 = icmp eq i64 %5, 1
  %unroll_iter = and i64 %5, 9223372036854775806
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %._crit_edge.us
  %.01116.us = phi i64 [ %28, %._crit_edge.us ], [ 0, %.preheader.us.preheader ]
  br i1 %7, label %._crit_edge.us.unr-lcssa, label %.preheader.us.new

.preheader.us.new:                                ; preds = %.preheader.us, %.preheader.us.new
  %.014.us = phi i64 [ %21, %.preheader.us.new ], [ 0, %.preheader.us ]
  %niter = phi i64 [ %niter.next.1, %.preheader.us.new ], [ 0, %.preheader.us ]
  %8 = load ptr, ptr %6, align 8, !tbaa !14
  %9 = getelementptr inbounds ptr, ptr %8, i64 %.01116.us
  %10 = load ptr, ptr %9, align 8, !tbaa !15
  %11 = getelementptr inbounds double, ptr %10, i64 %.014.us
  %12 = load double, ptr %11, align 8, !tbaa !16
  %13 = fneg double %12
  store double %13, ptr %11, align 8, !tbaa !16
  %14 = or disjoint i64 %.014.us, 1
  %15 = load ptr, ptr %6, align 8, !tbaa !14
  %16 = getelementptr inbounds ptr, ptr %15, i64 %.01116.us
  %17 = load ptr, ptr %16, align 8, !tbaa !15
  %18 = getelementptr inbounds double, ptr %17, i64 %14
  %19 = load double, ptr %18, align 8, !tbaa !16
  %20 = fneg double %19
  store double %20, ptr %18, align 8, !tbaa !16
  %21 = add nuw nsw i64 %.014.us, 2
  %niter.next.1 = add i64 %niter, 2
  %niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %._crit_edge.us.unr-lcssa, label %.preheader.us.new, !llvm.loop !18

._crit_edge.us.unr-lcssa:                         ; preds = %.preheader.us.new, %.preheader.us
  %.014.us.unr = phi i64 [ 0, %.preheader.us ], [ %21, %.preheader.us.new ]
  br i1 %lcmp.mod.not, label %._crit_edge.us, label %._crit_edge.us.epilog-lcssa

._crit_edge.us.epilog-lcssa:                      ; preds = %._crit_edge.us.unr-lcssa
  %22 = load ptr, ptr %6, align 8, !tbaa !14
  %23 = getelementptr inbounds ptr, ptr %22, i64 %.01116.us
  %24 = load ptr, ptr %23, align 8, !tbaa !15
  %25 = getelementptr inbounds double, ptr %24, i64 %.014.us.unr
  %26 = load double, ptr %25, align 8, !tbaa !16
  %27 = fneg double %26
  store double %27, ptr %25, align 8, !tbaa !16
  br label %._crit_edge.us

._crit_edge.us:                                   ; preds = %._crit_edge.us.unr-lcssa, %._crit_edge.us.epilog-lcssa
  %28 = add nuw nsw i64 %.01116.us, 1
  %exitcond19.not = icmp eq i64 %28, %3
  br i1 %exitcond19.not, label %._crit_edge17, label %.preheader.us, !llvm.loop !20

._crit_edge17:                                    ; preds = %._crit_edge.us, %.preheader.lr.ph, %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_matrixE", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !10, i64 32, !11, i64 40, !8, i64 72}
!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 = !{!6, !7, i64 8}
!14 = !{!8, !8, i64 0}
!15 = !{!12, !12, i64 0}
!16 = !{!17, !17, i64 0}
!17 = !{!"double", !8, i64 0}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.mustprogress"}
!20 = distinct !{!20, !19}


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