; 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 noundef double @_ZN11alglib_impl11xdebugr1sumEPNS_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
  %6 = alloca double, 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 double 0.000000e+00, ptr %6, align 8, !tbaa !9
  store i64 0, ptr %5, align 8, !tbaa !11
  br label %7

7:                                                ; preds = %23, %2
  %8 = load i64, ptr %5, align 8, !tbaa !11
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %"struct.alglib_impl::ae_vector", ptr %9, i32 0, i32 0
  %11 = load i64, ptr %10, align 8, !tbaa !13
  %12 = sub nsw i64 %11, 1
  %13 = icmp sle i64 %8, %12
  br i1 %13, label %14, label %26

14:                                               ; preds = %7
  %15 = load double, ptr %6, align 8, !tbaa !9
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = getelementptr inbounds %"struct.alglib_impl::ae_vector", ptr %16, i32 0, i32 4
  %18 = load ptr, ptr %17, align 8, !tbaa !17
  %19 = load i64, ptr %5, align 8, !tbaa !11
  %20 = getelementptr inbounds double, ptr %18, i64 %19
  %21 = load double, ptr %20, align 8, !tbaa !9
  %22 = fadd double %15, %21
  store double %22, ptr %6, align 8, !tbaa !9
  br label %23

23:                                               ; preds = %14
  %24 = load i64, ptr %5, align 8, !tbaa !11
  %25 = add nsw i64 %24, 1
  store i64 %25, ptr %5, align 8, !tbaa !11
  br label %7, !llvm.loop !18

26:                                               ; preds = %7
  %27 = load double, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret double %27
}

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 = !{!"double", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!14, !12, i64 0}
!14 = !{!"_ZTSN11alglib_impl9ae_vectorE", !12, i64 0, !12, i64 8, !15, i64 16, !16, i64 24, !7, i64 56}
!15 = !{!"bool", !7, i64 0}
!16 = !{!"_ZTSN11alglib_impl12ae_dyn_blockE", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24}
!17 = !{!7, !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 nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local noundef double @_ZN11alglib_impl11xdebugr1sumEPNS_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.not7 = icmp sgt i64 %3, 0
  br i1 %.not.not7, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2
  %4 = getelementptr inbounds i8, ptr %0, i64 56
  %5 = load ptr, ptr %4, align 8, !tbaa !13
  %xtraiter = and i64 %3, 7
  %6 = icmp ult i64 %3, 8
  br i1 %6, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.new

.lr.ph.new:                                       ; preds = %.lr.ph
  %unroll_iter = and i64 %3, 9223372036854775800
  br label %7

7:                                                ; preds = %7, %.lr.ph.new
  %.09 = phi double [ 0.000000e+00, %.lr.ph.new ], [ %38, %7 ]
  %.068 = phi i64 [ 0, %.lr.ph.new ], [ %39, %7 ]
  %niter = phi i64 [ 0, %.lr.ph.new ], [ %niter.next.7, %7 ]
  %8 = getelementptr inbounds double, ptr %5, i64 %.068
  %9 = load double, ptr %8, align 8, !tbaa !14
  %10 = fadd double %.09, %9
  %11 = or disjoint i64 %.068, 1
  %12 = getelementptr inbounds double, ptr %5, i64 %11
  %13 = load double, ptr %12, align 8, !tbaa !14
  %14 = fadd double %10, %13
  %15 = or disjoint i64 %.068, 2
  %16 = getelementptr inbounds double, ptr %5, i64 %15
  %17 = load double, ptr %16, align 8, !tbaa !14
  %18 = fadd double %14, %17
  %19 = or disjoint i64 %.068, 3
  %20 = getelementptr inbounds double, ptr %5, i64 %19
  %21 = load double, ptr %20, align 8, !tbaa !14
  %22 = fadd double %18, %21
  %23 = or disjoint i64 %.068, 4
  %24 = getelementptr inbounds double, ptr %5, i64 %23
  %25 = load double, ptr %24, align 8, !tbaa !14
  %26 = fadd double %22, %25
  %27 = or disjoint i64 %.068, 5
  %28 = getelementptr inbounds double, ptr %5, i64 %27
  %29 = load double, ptr %28, align 8, !tbaa !14
  %30 = fadd double %26, %29
  %31 = or disjoint i64 %.068, 6
  %32 = getelementptr inbounds double, ptr %5, i64 %31
  %33 = load double, ptr %32, align 8, !tbaa !14
  %34 = fadd double %30, %33
  %35 = or disjoint i64 %.068, 7
  %36 = getelementptr inbounds double, ptr %5, i64 %35
  %37 = load double, ptr %36, align 8, !tbaa !14
  %38 = fadd double %34, %37
  %39 = add nuw nsw i64 %.068, 8
  %niter.next.7 = add i64 %niter, 8
  %niter.ncmp.7 = icmp eq i64 %niter.next.7, %unroll_iter
  br i1 %niter.ncmp.7, label %._crit_edge.loopexit.unr-lcssa, label %7, !llvm.loop !16

._crit_edge.loopexit.unr-lcssa:                   ; preds = %7, %.lr.ph
  %.lcssa.ph = phi double [ poison, %.lr.ph ], [ %38, %7 ]
  %.09.unr = phi double [ 0.000000e+00, %.lr.ph ], [ %38, %7 ]
  %.068.unr = phi i64 [ 0, %.lr.ph ], [ %39, %7 ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.epil.preheader

.epil.preheader:                                  ; preds = %._crit_edge.loopexit.unr-lcssa, %.epil.preheader
  %.09.epil = phi double [ %42, %.epil.preheader ], [ %.09.unr, %._crit_edge.loopexit.unr-lcssa ]
  %.068.epil = phi i64 [ %43, %.epil.preheader ], [ %.068.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.epil.preheader ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %40 = getelementptr inbounds double, ptr %5, i64 %.068.epil
  %41 = load double, ptr %40, align 8, !tbaa !14
  %42 = fadd double %.09.epil, %41
  %43 = add nuw nsw i64 %.068.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.epil.preheader, !llvm.loop !18

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.epil.preheader, %2
  %.0.lcssa = phi double [ 0.000000e+00, %2 ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %42, %.epil.preheader ]
  ret double %.0.lcssa
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, 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 = !{!15, !15, i64 0}
!15 = !{!"double", !8, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.unroll.disable"}


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