; LLVM IR from Dimandragon/non-parametric-dsp :: alglib-cpp/src/ap.ll (ZN11alglib_impl6raddrrEldPKNS_9ae_matrixElPS0_lPNS_8ae_stateE)

; 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 }
%"struct.alglib_impl::ae_dyn_block" = type { ptr, ptr, ptr, ptr }
%union.anon = 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: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN11alglib_impl6raddrrEldPKNS_9ae_matrixElPS0_lPNS_8ae_stateE(i64 noundef %0, double noundef %1, ptr noundef %2, i64 noundef %3, ptr noundef %4, i64 noundef %5, ptr noundef %6) #2 {
  %8 = alloca i64, align 8
  %9 = alloca double, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i64, align 8
  %12 = alloca ptr, align 8
  %13 = alloca i64, align 8
  %14 = alloca ptr, align 8
  %15 = alloca i64, align 8
  store i64 %0, ptr %8, align 8, !tbaa !5
  store double %1, ptr %9, align 8, !tbaa !9
  store ptr %2, ptr %10, align 8, !tbaa !11
  store i64 %3, ptr %11, align 8, !tbaa !5
  store ptr %4, ptr %12, align 8, !tbaa !11
  store i64 %5, ptr %13, align 8, !tbaa !5
  store ptr %6, ptr %14, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %15) #3
  %16 = load i64, ptr %8, align 8, !tbaa !5
  %17 = icmp sge i64 %16, 16
  br i1 %17, label %18, label %19

18:                                               ; preds = %7
  br label %19

19:                                               ; preds = %18, %7
  store i64 0, ptr %15, align 8, !tbaa !5
  br label %20

20:                                               ; preds = %54, %19
  %21 = load i64, ptr %15, align 8, !tbaa !5
  %22 = load i64, ptr %8, align 8, !tbaa !5
  %23 = sub nsw i64 %22, 1
  %24 = icmp sle i64 %21, %23
  br i1 %24, label %25, label %57

25:                                               ; preds = %20
  %26 = load ptr, ptr %12, align 8, !tbaa !11
  %27 = getelementptr inbounds %"struct.alglib_impl::ae_matrix", ptr %26, i32 0, i32 6
  %28 = load ptr, ptr %27, align 8, !tbaa !13
  %29 = load i64, ptr %13, align 8, !tbaa !5
  %30 = getelementptr inbounds ptr, ptr %28, i64 %29
  %31 = load ptr, ptr %30, align 8, !tbaa !11
  %32 = load i64, ptr %15, align 8, !tbaa !5
  %33 = getelementptr inbounds double, ptr %31, i64 %32
  %34 = load double, ptr %33, align 8, !tbaa !9
  %35 = load double, ptr %9, align 8, !tbaa !9
  %36 = load ptr, ptr %10, align 8, !tbaa !11
  %37 = getelementptr inbounds %"struct.alglib_impl::ae_matrix", ptr %36, i32 0, i32 6
  %38 = load ptr, ptr %37, align 8, !tbaa !13
  %39 = load i64, ptr %11, align 8, !tbaa !5
  %40 = getelementptr inbounds ptr, ptr %38, i64 %39
  %41 = load ptr, ptr %40, align 8, !tbaa !11
  %42 = load i64, ptr %15, align 8, !tbaa !5
  %43 = getelementptr inbounds double, ptr %41, i64 %42
  %44 = load double, ptr %43, align 8, !tbaa !9
  %45 = call double @llvm.fmuladd.f64(double %35, double %44, double %34)
  %46 = load ptr, ptr %12, align 8, !tbaa !11
  %47 = getelementptr inbounds %"struct.alglib_impl::ae_matrix", ptr %46, i32 0, i32 6
  %48 = load ptr, ptr %47, align 8, !tbaa !13
  %49 = load i64, ptr %13, align 8, !tbaa !5
  %50 = getelementptr inbounds ptr, ptr %48, i64 %49
  %51 = load ptr, ptr %50, align 8, !tbaa !11
  %52 = load i64, ptr %15, align 8, !tbaa !5
  %53 = getelementptr inbounds double, ptr %51, i64 %52
  store double %45, ptr %53, align 8, !tbaa !9
  br label %54

54:                                               ; preds = %25
  %55 = load i64, ptr %15, align 8, !tbaa !5
  %56 = add nsw i64 %55, 1
  store i64 %56, ptr %15, align 8, !tbaa !5
  br label %20, !llvm.loop !14

57:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %15) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { 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 #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 = !{!"double", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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 nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #0

; Function Attrs: mustprogress nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local void @_ZN11alglib_impl6raddrrEldPKNS_9ae_matrixElPS0_lPNS_8ae_stateE(i64 noundef %0, double noundef %1, ptr nocapture noundef readonly %2, i64 noundef %3, ptr nocapture noundef readonly %4, i64 noundef %5, ptr nocapture noundef readnone %6) local_unnamed_addr #1 {
  %.not.not13 = icmp sgt i64 %0, 0
  br i1 %.not.not13, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %7
  %8 = getelementptr inbounds i8, ptr %4, i64 72
  %9 = getelementptr inbounds i8, ptr %2, i64 72
  %xtraiter = and i64 %0, 1
  %10 = icmp eq i64 %0, 1
  br i1 %10, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.new

.lr.ph.new:                                       ; preds = %.lr.ph
  %unroll_iter = and i64 %0, 9223372036854775806
  br label %11

11:                                               ; preds = %11, %.lr.ph.new
  %.014 = phi i64 [ 0, %.lr.ph.new ], [ %35, %11 ]
  %niter = phi i64 [ 0, %.lr.ph.new ], [ %niter.next.1, %11 ]
  %12 = load ptr, ptr %8, align 8, !tbaa !5
  %13 = getelementptr inbounds ptr, ptr %12, i64 %5
  %14 = load ptr, ptr %13, align 8, !tbaa !8
  %15 = getelementptr inbounds double, ptr %14, i64 %.014
  %16 = load double, ptr %15, align 8, !tbaa !10
  %17 = load ptr, ptr %9, align 8, !tbaa !5
  %18 = getelementptr inbounds ptr, ptr %17, i64 %3
  %19 = load ptr, ptr %18, align 8, !tbaa !8
  %20 = getelementptr inbounds double, ptr %19, i64 %.014
  %21 = load double, ptr %20, align 8, !tbaa !10
  %22 = tail call double @llvm.fmuladd.f64(double %1, double %21, double %16)
  store double %22, ptr %15, align 8, !tbaa !10
  %23 = or disjoint i64 %.014, 1
  %24 = load ptr, ptr %8, align 8, !tbaa !5
  %25 = getelementptr inbounds ptr, ptr %24, i64 %5
  %26 = load ptr, ptr %25, align 8, !tbaa !8
  %27 = getelementptr inbounds double, ptr %26, i64 %23
  %28 = load double, ptr %27, align 8, !tbaa !10
  %29 = load ptr, ptr %9, align 8, !tbaa !5
  %30 = getelementptr inbounds ptr, ptr %29, i64 %3
  %31 = load ptr, ptr %30, align 8, !tbaa !8
  %32 = getelementptr inbounds double, ptr %31, i64 %23
  %33 = load double, ptr %32, align 8, !tbaa !10
  %34 = tail call double @llvm.fmuladd.f64(double %1, double %33, double %28)
  store double %34, ptr %27, align 8, !tbaa !10
  %35 = add nuw nsw i64 %.014, 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 %11, !llvm.loop !12

._crit_edge.loopexit.unr-lcssa:                   ; preds = %11, %.lr.ph
  %.014.unr = phi i64 [ 0, %.lr.ph ], [ %35, %11 ]
  %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
  %36 = load ptr, ptr %8, align 8, !tbaa !5
  %37 = getelementptr inbounds ptr, ptr %36, i64 %5
  %38 = load ptr, ptr %37, align 8, !tbaa !8
  %39 = getelementptr inbounds double, ptr %38, i64 %.014.unr
  %40 = load double, ptr %39, align 8, !tbaa !10
  %41 = load ptr, ptr %9, align 8, !tbaa !5
  %42 = getelementptr inbounds ptr, ptr %41, i64 %3
  %43 = load ptr, ptr %42, align 8, !tbaa !8
  %44 = getelementptr inbounds double, ptr %43, i64 %.014.unr
  %45 = load double, ptr %44, align 8, !tbaa !10
  %46 = tail call double @llvm.fmuladd.f64(double %1, double %45, double %40)
  store double %46, ptr %39, align 8, !tbaa !10
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit.epilog-lcssa, %._crit_edge.loopexit.unr-lcssa, %7
  ret void
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { 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, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"any pointer", !6, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"double", !6, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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