; LLVM IR from ljm941004/HYPERCV_PUBLIC :: modules/process/src/c_src (mathprocess)

; 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"

@hypercv_factorial_tab = external hidden global [11 x i64], align 16

; 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: nounwind uwtable
define dso_local i64 @hypercv_factorial(i32 noundef %0) #1 {
  %2 = alloca i64, align 8
  %3 = alloca i32, align 4
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = icmp slt i32 %6, 0
  br i1 %7, label %8, label %9

8:                                                ; preds = %1
  store i64 -1, ptr %2, align 8
  br label %33

9:                                                ; preds = %1
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = icmp sle i32 %10, 10
  br i1 %11, label %12, label %17

12:                                               ; preds = %9
  %13 = load i32, ptr %3, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [11 x i64], ptr @hypercv_factorial_tab, i64 0, i64 %14
  %16 = load i64, ptr %15, align 8, !tbaa !9
  store i64 %16, ptr %2, align 8
  br label %33

17:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  store i64 1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 2, ptr %5, align 4, !tbaa !5
  br label %18

18:                                               ; preds = %28, %17
  %19 = load i32, ptr %5, align 4, !tbaa !5
  %20 = load i32, ptr %3, align 4, !tbaa !5
  %21 = icmp sle i32 %19, %20
  br i1 %21, label %23, label %22

22:                                               ; preds = %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %31

23:                                               ; preds = %18
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = load i64, ptr %4, align 8, !tbaa !9
  %27 = mul nsw i64 %26, %25
  store i64 %27, ptr %4, align 8, !tbaa !9
  br label %28

28:                                               ; preds = %23
  %29 = load i32, ptr %5, align 4, !tbaa !5
  %30 = add nsw i32 %29, 1
  store i32 %30, ptr %5, align 4, !tbaa !5
  br label %18, !llvm.loop !11

31:                                               ; preds = %22
  %32 = load i64, ptr %4, align 8, !tbaa !9
  store i64 %32, ptr %2, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  br label %33

33:                                               ; preds = %31, %12, %8
  %34 = load i64, ptr %2, align 8
  ret i64 %34
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

@hypercv_factorial_tab = external hidden local_unnamed_addr global [11 x i64], align 16

; Function Attrs: nofree norecurse nosync nounwind memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local i64 @hypercv_factorial(i32 noundef %0) local_unnamed_addr #0 {
  %2 = icmp slt i32 %0, 0
  br i1 %2, label %.loopexit, label %3

3:                                                ; preds = %1
  %4 = icmp ult i32 %0, 11
  br i1 %4, label %9, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %3
  %5 = add nuw i32 %0, 1
  %wide.trip.count = zext i32 %5 to i64
  %6 = add nsw i64 %wide.trip.count, -2
  %7 = add nsw i64 %wide.trip.count, -3
  %xtraiter = and i64 %6, 7
  %8 = icmp ult i64 %7, 7
  br i1 %8, label %.loopexit.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %6, -8
  br label %.lr.ph

9:                                                ; preds = %3
  %10 = zext nneg i32 %0 to i64
  %11 = getelementptr inbounds [11 x i64], ptr @hypercv_factorial_tab, i64 0, i64 %10
  %12 = load i64, ptr %11, align 8, !tbaa !5
  br label %.loopexit

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 2, %.lr.ph.preheader.new ], [ %indvars.iv.next.7, %.lr.ph ]
  %.01014 = phi i64 [ 1, %.lr.ph.preheader.new ], [ %20, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.7, %.lr.ph ]
  %13 = mul nuw nsw i64 %.01014, %indvars.iv
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %14 = mul nuw nsw i64 %13, %indvars.iv.next
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %15 = mul nuw nsw i64 %14, %indvars.iv.next.1
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %16 = mul nuw nsw i64 %15, %indvars.iv.next.2
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %17 = mul nuw nsw i64 %16, %indvars.iv.next.3
  %indvars.iv.next.4 = add nuw nsw i64 %indvars.iv, 5
  %18 = mul nuw nsw i64 %17, %indvars.iv.next.4
  %indvars.iv.next.5 = add nuw nsw i64 %indvars.iv, 6
  %19 = mul nuw nsw i64 %18, %indvars.iv.next.5
  %indvars.iv.next.6 = add nuw nsw i64 %indvars.iv, 7
  %20 = mul nuw nsw i64 %19, %indvars.iv.next.6
  %indvars.iv.next.7 = add nuw nsw i64 %indvars.iv, 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 %.loopexit.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !9

.loopexit.loopexit.unr-lcssa:                     ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa.ph = phi i64 [ poison, %.lr.ph.preheader ], [ %20, %.lr.ph ]
  %indvars.iv.unr = phi i64 [ 2, %.lr.ph.preheader ], [ %indvars.iv.next.7, %.lr.ph ]
  %.01014.unr = phi i64 [ 1, %.lr.ph.preheader ], [ %20, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.loopexit, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %.loopexit.loopexit.unr-lcssa, %.lr.ph.epil
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.lr.ph.epil ], [ %indvars.iv.unr, %.loopexit.loopexit.unr-lcssa ]
  %.01014.epil = phi i64 [ %21, %.lr.ph.epil ], [ %.01014.unr, %.loopexit.loopexit.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %.loopexit.loopexit.unr-lcssa ]
  %21 = mul nuw nsw i64 %.01014.epil, %indvars.iv.epil
  %indvars.iv.next.epil = add nuw nsw i64 %indvars.iv.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 %.loopexit, label %.lr.ph.epil, !llvm.loop !11

.loopexit:                                        ; preds = %.loopexit.loopexit.unr-lcssa, %.lr.ph.epil, %1, %9
  %.011 = phi i64 [ %12, %9 ], [ -1, %1 ], [ %.lcssa.ph, %.loopexit.loopexit.unr-lcssa ], [ %21, %.lr.ph.epil ]
  ret i64 %.011
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, argmem: none, 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.unroll.disable"}


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