; LLVM IR from nde-jesu/Doom_Nukem :: libft/srcs/maths (ft_average)

; 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"

; Function Attrs: nounwind uwtable
define dso_local double @ft_average(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca double, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca double, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  store i32 0, ptr %6, align 4, !tbaa !9
  store double 0.000000e+00, ptr %7, align 8, !tbaa !11
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = icmp sle i32 %9, 0
  br i1 %10, label %11, label %12

11:                                               ; preds = %2
  store double 0.000000e+00, ptr %3, align 8
  store i32 1, ptr %8, align 4
  br label %31

12:                                               ; preds = %2
  br label %13

13:                                               ; preds = %17, %12
  %14 = load i32, ptr %6, align 4, !tbaa !9
  %15 = load i32, ptr %5, align 4, !tbaa !9
  %16 = icmp slt i32 %14, %15
  br i1 %16, label %17, label %26

17:                                               ; preds = %13
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %6, align 4, !tbaa !9
  %21 = sext i32 %19 to i64
  %22 = getelementptr inbounds double, ptr %18, i64 %21
  %23 = load double, ptr %22, align 8, !tbaa !11
  %24 = load double, ptr %7, align 8, !tbaa !11
  %25 = fadd double %24, %23
  store double %25, ptr %7, align 8, !tbaa !11
  br label %13, !llvm.loop !13

26:                                               ; preds = %13
  %27 = load double, ptr %7, align 8, !tbaa !11
  %28 = load i32, ptr %5, align 4, !tbaa !9
  %29 = sitofp i32 %28 to double
  %30 = fdiv double %27, %29
  store double %30, ptr %3, align 8
  store i32 1, ptr %8, align 4
  br label %31

31:                                               ; preds = %26, %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %32 = load double, ptr %3, align 8
  ret double %32
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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: nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local double @ft_average(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp slt i32 %1, 1
  br i1 %3, label %34, label %.preheader.preheader

.preheader.preheader:                             ; preds = %2
  %wide.trip.count = zext nneg i32 %1 to i64
  %xtraiter = and i64 %wide.trip.count, 7
  %4 = icmp ult i32 %1, 8
  br i1 %4, label %.unr-lcssa, label %.preheader.preheader.new

.preheader.preheader.new:                         ; preds = %.preheader.preheader
  %unroll_iter = and i64 %wide.trip.count, 2147483640
  br label %.preheader

.preheader:                                       ; preds = %.preheader, %.preheader.preheader.new
  %indvars.iv = phi i64 [ 0, %.preheader.preheader.new ], [ %indvars.iv.next.7, %.preheader ]
  %.012 = phi double [ 0.000000e+00, %.preheader.preheader.new ], [ %28, %.preheader ]
  %niter = phi i64 [ 0, %.preheader.preheader.new ], [ %niter.next.7, %.preheader ]
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %5 = getelementptr inbounds double, ptr %0, i64 %indvars.iv
  %6 = load double, ptr %5, align 8, !tbaa !5
  %7 = fadd double %.012, %6
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %8 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next
  %9 = load double, ptr %8, align 8, !tbaa !5
  %10 = fadd double %7, %9
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %11 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.1
  %12 = load double, ptr %11, align 8, !tbaa !5
  %13 = fadd double %10, %12
  %indvars.iv.next.3 = or disjoint i64 %indvars.iv, 4
  %14 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.2
  %15 = load double, ptr %14, align 8, !tbaa !5
  %16 = fadd double %13, %15
  %indvars.iv.next.4 = or disjoint i64 %indvars.iv, 5
  %17 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.3
  %18 = load double, ptr %17, align 8, !tbaa !5
  %19 = fadd double %16, %18
  %indvars.iv.next.5 = or disjoint i64 %indvars.iv, 6
  %20 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.4
  %21 = load double, ptr %20, align 8, !tbaa !5
  %22 = fadd double %19, %21
  %indvars.iv.next.6 = or disjoint i64 %indvars.iv, 7
  %23 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.5
  %24 = load double, ptr %23, align 8, !tbaa !5
  %25 = fadd double %22, %24
  %indvars.iv.next.7 = add nuw nsw i64 %indvars.iv, 8
  %26 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.next.6
  %27 = load double, ptr %26, align 8, !tbaa !5
  %28 = fadd double %25, %27
  %niter.next.7 = add i64 %niter, 8
  %niter.ncmp.7 = icmp eq i64 %niter.next.7, %unroll_iter
  br i1 %niter.ncmp.7, label %.unr-lcssa, label %.preheader, !llvm.loop !9

.unr-lcssa:                                       ; preds = %.preheader, %.preheader.preheader
  %.lcssa.ph = phi double [ poison, %.preheader.preheader ], [ %28, %.preheader ]
  %indvars.iv.unr = phi i64 [ 0, %.preheader.preheader ], [ %indvars.iv.next.7, %.preheader ]
  %.012.unr = phi double [ 0.000000e+00, %.preheader.preheader ], [ %28, %.preheader ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.epilog-lcssa, label %.preheader.epil

.preheader.epil:                                  ; preds = %.unr-lcssa, %.preheader.epil
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.preheader.epil ], [ %indvars.iv.unr, %.unr-lcssa ]
  %.012.epil = phi double [ %31, %.preheader.epil ], [ %.012.unr, %.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.preheader.epil ], [ 0, %.unr-lcssa ]
  %indvars.iv.next.epil = add nuw nsw i64 %indvars.iv.epil, 1
  %29 = getelementptr inbounds double, ptr %0, i64 %indvars.iv.epil
  %30 = load double, ptr %29, align 8, !tbaa !5
  %31 = fadd double %.012.epil, %30
  %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 %.epilog-lcssa, label %.preheader.epil, !llvm.loop !11

.epilog-lcssa:                                    ; preds = %.preheader.epil, %.unr-lcssa
  %.lcssa = phi double [ %.lcssa.ph, %.unr-lcssa ], [ %31, %.preheader.epil ]
  %32 = sitofp i32 %1 to double
  %33 = fdiv double %.lcssa, %32
  br label %34

34:                                               ; preds = %2, %.epilog-lcssa
  %.09 = phi double [ %33, %.epilog-lcssa ], [ 0.000000e+00, %2 ]
  ret double %.09
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: read) 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 = !{!"double", !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: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass