; LLVM IR from CLASS-SZ/class_sz :: class-sz/tools (r8lib)

; 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: 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: nounwind
declare double @sqrt(double noundef) #2

; Function Attrs: nounwind uwtable
declare dso_local ptr @r8vec_normal_01_new(i32 noundef, ptr noundef) #3

; Function Attrs: nounwind uwtable
define dso_local ptr @r8vec_uniform_unit_new(i32 noundef %0, ptr noundef %1) #3 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca double, align 8
  store i32 %0, ptr %3, align 4, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %9 = load ptr, ptr %4, align 8, !tbaa !9
  %10 = call ptr @r8vec_normal_01_new(i32 noundef %8, ptr noundef %9)
  store ptr %10, ptr %5, align 8, !tbaa !9
  store double 0.000000e+00, ptr %7, align 8, !tbaa !11
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %28, %2
  %12 = load i32, ptr %6, align 4, !tbaa !5
  %13 = load i32, ptr %3, align 4, !tbaa !5
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %15, label %31

15:                                               ; preds = %11
  %16 = load double, ptr %7, align 8, !tbaa !11
  %17 = load ptr, ptr %5, align 8, !tbaa !9
  %18 = load i32, ptr %6, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds double, ptr %17, i64 %19
  %21 = load double, ptr %20, align 8, !tbaa !11
  %22 = load ptr, ptr %5, align 8, !tbaa !9
  %23 = load i32, ptr %6, align 4, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds double, ptr %22, i64 %24
  %26 = load double, ptr %25, align 8, !tbaa !11
  %27 = call double @llvm.fmuladd.f64(double %21, double %26, double %16)
  store double %27, ptr %7, align 8, !tbaa !11
  br label %28

28:                                               ; preds = %15
  %29 = load i32, ptr %6, align 4, !tbaa !5
  %30 = add nsw i32 %29, 1
  store i32 %30, ptr %6, align 4, !tbaa !5
  br label %11, !llvm.loop !13

31:                                               ; preds = %11
  %32 = load double, ptr %7, align 8, !tbaa !11
  %33 = call double @sqrt(double noundef %32) #4
  store double %33, ptr %7, align 8, !tbaa !11
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %34

34:                                               ; preds = %50, %31
  %35 = load i32, ptr %6, align 4, !tbaa !5
  %36 = load i32, ptr %3, align 4, !tbaa !5
  %37 = icmp slt i32 %35, %36
  br i1 %37, label %38, label %53

38:                                               ; preds = %34
  %39 = load ptr, ptr %5, align 8, !tbaa !9
  %40 = load i32, ptr %6, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds double, ptr %39, i64 %41
  %43 = load double, ptr %42, align 8, !tbaa !11
  %44 = load double, ptr %7, align 8, !tbaa !11
  %45 = fdiv double %43, %44
  %46 = load ptr, ptr %5, align 8, !tbaa !9
  %47 = load i32, ptr %6, align 4, !tbaa !5
  %48 = sext i32 %47 to i64
  %49 = getelementptr inbounds double, ptr %46, i64 %48
  store double %45, ptr %49, align 8, !tbaa !11
  br label %50

50:                                               ; preds = %38
  %51 = load i32, ptr %6, align 4, !tbaa !5
  %52 = add nsw i32 %51, 1
  store i32 %52, ptr %6, align 4, !tbaa !5
  br label %34, !llvm.loop !15

53:                                               ; preds = %34
  %54 = load ptr, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  ret ptr %54
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { nounwind "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 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 #4 = { 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 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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 nounwind willreturn memory(write)
declare double @sqrt(double noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @r8vec_normal_01_new(i32 noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local ptr @r8vec_uniform_unit_new(i32 noundef %0, ptr noundef %1) local_unnamed_addr #2 {
  %3 = tail call ptr @r8vec_normal_01_new(i32 noundef %0, ptr noundef %1)
  %4 = icmp sgt i32 %0, 0
  br i1 %4, label %.lr.ph.preheader, label %._crit_edge26

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext nneg i32 %0 to i64
  %xtraiter = and i64 %wide.trip.count, 3
  %5 = icmp ult i32 %0, 4
  br i1 %5, label %._crit_edge.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %wide.trip.count, 2147483644
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader.new ], [ %indvars.iv.next.3, %.lr.ph ]
  %.022 = phi double [ 0.000000e+00, %.lr.ph.preheader.new ], [ %17, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.3, %.lr.ph ]
  %6 = getelementptr inbounds double, ptr %3, i64 %indvars.iv
  %7 = load double, ptr %6, align 8, !tbaa !5
  %8 = tail call double @llvm.fmuladd.f64(double %7, double %7, double %.022)
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %9 = getelementptr inbounds double, ptr %3, i64 %indvars.iv.next
  %10 = load double, ptr %9, align 8, !tbaa !5
  %11 = tail call double @llvm.fmuladd.f64(double %10, double %10, double %8)
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %12 = getelementptr inbounds double, ptr %3, i64 %indvars.iv.next.1
  %13 = load double, ptr %12, align 8, !tbaa !5
  %14 = tail call double @llvm.fmuladd.f64(double %13, double %13, double %11)
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %15 = getelementptr inbounds double, ptr %3, i64 %indvars.iv.next.2
  %16 = load double, ptr %15, align 8, !tbaa !5
  %17 = tail call double @llvm.fmuladd.f64(double %16, double %16, double %14)
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %niter.next.3 = add i64 %niter, 4
  %niter.ncmp.3 = icmp eq i64 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %._crit_edge.unr-lcssa, label %.lr.ph, !llvm.loop !9

._crit_edge.unr-lcssa:                            ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa.ph = phi double [ poison, %.lr.ph.preheader ], [ %17, %.lr.ph ]
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next.3, %.lr.ph ]
  %.022.unr = phi double [ 0.000000e+00, %.lr.ph.preheader ], [ %17, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.unr-lcssa, %.lr.ph.epil
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.lr.ph.epil ], [ %indvars.iv.unr, %._crit_edge.unr-lcssa ]
  %.022.epil = phi double [ %20, %.lr.ph.epil ], [ %.022.unr, %._crit_edge.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.unr-lcssa ]
  %18 = getelementptr inbounds double, ptr %3, i64 %indvars.iv.epil
  %19 = load double, ptr %18, align 8, !tbaa !5
  %20 = tail call double @llvm.fmuladd.f64(double %19, double %19, double %.022.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 %._crit_edge, label %.lr.ph.epil, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph.epil, %._crit_edge.unr-lcssa
  %.lcssa = phi double [ %.lcssa.ph, %._crit_edge.unr-lcssa ], [ %20, %.lr.ph.epil ]
  %21 = tail call double @sqrt(double noundef %.lcssa) #3
  br i1 %4, label %.lr.ph25.preheader, label %._crit_edge26

.lr.ph25.preheader:                               ; preds = %._crit_edge
  %wide.trip.count31 = zext nneg i32 %0 to i64
  %min.iters.check = icmp eq i32 %0, 1
  br i1 %min.iters.check, label %.lr.ph25.preheader34, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph25.preheader
  %n.vec = and i64 %wide.trip.count, 2147483646
  %broadcast.splatinsert = insertelement <2 x double> poison, double %21, i64 0
  %broadcast.splat = shufflevector <2 x double> %broadcast.splatinsert, <2 x double> poison, <2 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %22 = getelementptr inbounds double, ptr %3, i64 %index
  %wide.load = load <2 x double>, ptr %22, align 8, !tbaa !5
  %23 = fdiv <2 x double> %wide.load, %broadcast.splat
  store <2 x double> %23, ptr %22, align 8, !tbaa !5
  %index.next = add nuw i64 %index, 2
  %24 = icmp eq i64 %index.next, %n.vec
  br i1 %24, label %middle.block, label %vector.body, !llvm.loop !13

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %._crit_edge26, label %.lr.ph25.preheader34

.lr.ph25.preheader34:                             ; preds = %middle.block, %.lr.ph25.preheader
  %indvars.iv28.ph = phi i64 [ 0, %.lr.ph25.preheader ], [ %n.vec, %middle.block ]
  br label %.lr.ph25

.lr.ph25:                                         ; preds = %.lr.ph25.preheader34, %.lr.ph25
  %indvars.iv28 = phi i64 [ %indvars.iv.next29, %.lr.ph25 ], [ %indvars.iv28.ph, %.lr.ph25.preheader34 ]
  %25 = getelementptr inbounds double, ptr %3, i64 %indvars.iv28
  %26 = load double, ptr %25, align 8, !tbaa !5
  %27 = fdiv double %26, %21
  store double %27, ptr %25, align 8, !tbaa !5
  %indvars.iv.next29 = add nuw nsw i64 %indvars.iv28, 1
  %exitcond32.not = icmp eq i64 %indvars.iv.next29, %wide.trip.count31
  br i1 %exitcond32.not, label %._crit_edge26, label %.lr.ph25, !llvm.loop !16

._crit_edge26:                                    ; preds = %.lr.ph25, %middle.block, %2, %._crit_edge
  ret ptr %3
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { mustprogress nofree nounwind willreturn memory(write) "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 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 = !{!"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"}
!13 = distinct !{!13, !10, !14, !15}
!14 = !{!"llvm.loop.isvectorized", i32 1}
!15 = !{!"llvm.loop.unroll.runtime.disable"}
!16 = distinct !{!16, !10, !15, !14}


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