; 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 uwtable
define dso_local void @_ZN11alglib_impl15xdebugr1outevenElPNS_9ae_vectorEPNS_8ae_stateE(i64 noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  store i64 %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %8 = load ptr, ptr %5, align 8, !tbaa !9
  call void @_ZN11alglib_impl15ae_vector_clearEPNS_9ae_vectorE(ptr noundef %8)
  %9 = load ptr, ptr %5, align 8, !tbaa !9
  %10 = load i64, ptr %4, align 8, !tbaa !5
  %11 = load ptr, ptr %6, align 8, !tbaa !9
  call void @_ZN11alglib_impl20ae_vector_set_lengthEPNS_9ae_vectorElPNS_8ae_stateE(ptr noundef %9, i64 noundef %10, ptr noundef %11)
  store i64 0, ptr %7, align 8, !tbaa !5
  br label %12

12:                                               ; preds = %39, %3
  %13 = load i64, ptr %7, align 8, !tbaa !5
  %14 = load ptr, ptr %5, align 8, !tbaa !9
  %15 = getelementptr inbounds %"struct.alglib_impl::ae_vector", ptr %14, i32 0, i32 0
  %16 = load i64, ptr %15, align 8, !tbaa !11
  %17 = sub nsw i64 %16, 1
  %18 = icmp sle i64 %13, %17
  br i1 %18, label %19, label %42

19:                                               ; preds = %12
  %20 = load i64, ptr %7, align 8, !tbaa !5
  %21 = srem i64 %20, 2
  %22 = icmp eq i64 %21, 0
  br i1 %22, label %23, label %32

23:                                               ; preds = %19
  %24 = load i64, ptr %7, align 8, !tbaa !5
  %25 = sitofp i64 %24 to double
  %26 = fmul double %25, 2.500000e-01
  %27 = load ptr, ptr %5, align 8, !tbaa !9
  %28 = getelementptr inbounds %"struct.alglib_impl::ae_vector", ptr %27, i32 0, i32 4
  %29 = load ptr, ptr %28, align 8, !tbaa !15
  %30 = load i64, ptr %7, align 8, !tbaa !5
  %31 = getelementptr inbounds double, ptr %29, i64 %30
  store double %26, ptr %31, align 8, !tbaa !16
  br label %38

32:                                               ; preds = %19
  %33 = load ptr, ptr %5, align 8, !tbaa !9
  %34 = getelementptr inbounds %"struct.alglib_impl::ae_vector", ptr %33, i32 0, i32 4
  %35 = load ptr, ptr %34, align 8, !tbaa !15
  %36 = load i64, ptr %7, align 8, !tbaa !5
  %37 = getelementptr inbounds double, ptr %35, i64 %36
  store double 0.000000e+00, ptr %37, align 8, !tbaa !16
  br label %38

38:                                               ; preds = %32, %23
  br label %39

39:                                               ; preds = %38
  %40 = load i64, ptr %7, align 8, !tbaa !5
  %41 = add nsw i64 %40, 1
  store i64 %41, ptr %7, align 8, !tbaa !5
  br label %12, !llvm.loop !18

42:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  ret void
}

declare void @_ZN11alglib_impl20ae_vector_set_lengthEPNS_9ae_vectorElPNS_8ae_stateE(ptr noundef, i64 noundef, ptr noundef) #2

declare void @_ZN11alglib_impl15ae_vector_clearEPNS_9ae_vectorE(ptr noundef) #2

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 = { "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 #3 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"_ZTSN11alglib_impl9ae_vectorE", !6, i64 0, !6, i64 8, !13, i64 16, !14, i64 24, !7, i64 56}
!13 = !{!"bool", !7, i64 0}
!14 = !{!"_ZTSN11alglib_impl12ae_dyn_blockE", !10, i64 0, !10, i64 8, !10, i64 16, !10, i64 24}
!15 = !{!7, !7, i64 0}
!16 = !{!17, !17, i64 0}
!17 = !{!"double", !7, i64 0}
!18 = distinct !{!18, !19}
!19 = !{!"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 uwtable
define dso_local void @_ZN11alglib_impl15xdebugr1outevenElPNS_9ae_vectorEPNS_8ae_stateE(i64 noundef %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  tail call void @_ZN11alglib_impl15ae_vector_clearEPNS_9ae_vectorE(ptr noundef %1)
  tail call void @_ZN11alglib_impl20ae_vector_set_lengthEPNS_9ae_vectorElPNS_8ae_stateE(ptr noundef %1, i64 noundef %0, ptr noundef %2)
  %4 = load i64, ptr %1, align 8, !tbaa !5
  %.not.not12 = icmp sgt i64 %4, 0
  br i1 %.not.not12, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3
  %5 = getelementptr inbounds i8, ptr %1, i64 56
  %xtraiter = and i64 %4, 1
  %6 = icmp eq i64 %4, 1
  br i1 %6, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.new

.lr.ph.new:                                       ; preds = %.lr.ph
  %unroll_iter = and i64 %4, 9223372036854775806
  br label %7

7:                                                ; preds = %7, %.lr.ph.new
  %.013 = phi i64 [ 0, %.lr.ph.new ], [ %15, %7 ]
  %niter = phi i64 [ 0, %.lr.ph.new ], [ %niter.next.1, %7 ]
  %8 = uitofp nneg i64 %.013 to double
  %9 = fmul double %8, 2.500000e-01
  %10 = load ptr, ptr %5, align 8, !tbaa !13
  %11 = getelementptr inbounds double, ptr %10, i64 %.013
  store double %9, ptr %11, align 8, !tbaa !14
  %12 = or disjoint i64 %.013, 1
  %13 = load ptr, ptr %5, align 8, !tbaa !13
  %14 = getelementptr inbounds double, ptr %13, i64 %12
  store double 0.000000e+00, ptr %14, align 8, !tbaa !14
  %15 = add nuw nsw i64 %.013, 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.loopexit.unr-lcssa, label %7, !llvm.loop !16

._crit_edge.loopexit.unr-lcssa:                   ; preds = %7, %.lr.ph
  %.013.unr = phi i64 [ 0, %.lr.ph ], [ %15, %7 ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %._crit_edge.loopexit.epilog-lcssa

._crit_edge.loopexit.epilog-lcssa:                ; preds = %._crit_edge.loopexit.unr-lcssa
  %16 = and i64 %.013.unr, 1
  %17 = icmp eq i64 %16, 0
  %18 = uitofp nneg i64 %.013.unr to double
  %19 = fmul double %18, 2.500000e-01
  %.sink.epil = select i1 %17, double %19, double 0.000000e+00
  %20 = load ptr, ptr %5, align 8, !tbaa !13
  %21 = getelementptr inbounds double, ptr %20, i64 %.013.unr
  store double %.sink.epil, ptr %21, align 8, !tbaa !14
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit.epilog-lcssa, %._crit_edge.loopexit.unr-lcssa, %3
  ret void
}

declare void @_ZN11alglib_impl20ae_vector_set_lengthEPNS_9ae_vectorElPNS_8ae_stateE(ptr noundef, i64 noundef, ptr noundef) local_unnamed_addr #1

declare void @_ZN11alglib_impl15ae_vector_clearEPNS_9ae_vectorE(ptr noundef) local_unnamed_addr #1

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" }
attributes #1 = { "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 = !{!15, !15, i64 0}
!15 = !{!"double", !8, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}


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