; LLVM IR from afbarnard/go-lbfgsb :: prototype (mainc)

; 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.cbdata = type { ptr, i32 }

; 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 i32 @objgrad_sphere(i32 noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3) #1 {
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca ptr, align 8
  %12 = alloca i32, align 4
  store i32 %0, ptr %6, align 4, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !9
  store ptr %2, ptr %8, align 8, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  store i32 0, ptr %10, align 4, !tbaa !5
  br label %13

13:                                               ; preds = %29, %4
  %14 = load i32, ptr %10, align 4, !tbaa !5
  %15 = load i32, ptr %6, align 4, !tbaa !5
  %16 = icmp slt i32 %14, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  br label %32

18:                                               ; preds = %13
  %19 = load ptr, ptr %7, align 8, !tbaa !9
  %20 = load i32, ptr %10, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds double, ptr %19, i64 %21
  %23 = load double, ptr %22, align 8, !tbaa !11
  %24 = fmul double 2.000000e+00, %23
  %25 = load ptr, ptr %8, align 8, !tbaa !9
  %26 = load i32, ptr %10, align 4, !tbaa !5
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds double, ptr %25, i64 %27
  store double %24, ptr %28, align 8, !tbaa !11
  br label %29

29:                                               ; preds = %18
  %30 = load i32, ptr %10, align 4, !tbaa !5
  %31 = add nsw i32 %30, 1
  store i32 %31, ptr %10, align 4, !tbaa !5
  br label %13, !llvm.loop !13

32:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #2
  %33 = load ptr, ptr %9, align 8, !tbaa !9
  store ptr %33, ptr %11, align 8, !tbaa !9
  %34 = load ptr, ptr %11, align 8, !tbaa !9
  %35 = getelementptr inbounds %struct.cbdata, ptr %34, i32 0, i32 1
  %36 = load i32, ptr %35, align 8, !tbaa !15
  %37 = icmp ne i32 %36, 987
  br i1 %37, label %38, label %42

38:                                               ; preds = %32
  %39 = load ptr, ptr %11, align 8, !tbaa !9
  %40 = getelementptr inbounds %struct.cbdata, ptr %39, i32 0, i32 1
  %41 = load i32, ptr %40, align 8, !tbaa !15
  store i32 %41, ptr %5, align 4
  store i32 1, ptr %12, align 4
  br label %43

42:                                               ; preds = %32
  store i32 0, ptr %5, align 4
  store i32 1, ptr %12, align 4
  br label %43

43:                                               ; preds = %42, %38
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #2
  %44 = load i32, ptr %5, align 4
  ret i32 %44
}

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 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = !{!16, !6, i64 8}
!16 = !{!"cbdata", !10, i64 0, !6, i64 8}


; 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: readwrite) uwtable
define dso_local range(i32 988, 987) i32 @objgrad_sphere(i32 noundef %0, ptr nocapture noundef readonly %1, ptr nocapture noundef writeonly %2, ptr nocapture noundef readonly %3) local_unnamed_addr #0 {
  %5 = icmp sgt i32 %0, 0
  br i1 %5, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %4
  %6 = ptrtoint ptr %2 to i64
  %7 = ptrtoint ptr %1 to i64
  %wide.trip.count = zext nneg i32 %0 to i64
  %min.iters.check = icmp ult i32 %0, 4
  %8 = sub i64 %6, %7
  %diff.check = icmp ult i64 %8, 32
  %or.cond = or i1 %min.iters.check, %diff.check
  br i1 %or.cond, label %.lr.ph.preheader15, label %vector.ph

.lr.ph.preheader15:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %xtraiter = and i64 %wide.trip.count, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol

.lr.ph.prol:                                      ; preds = %.lr.ph.preheader15, %.lr.ph.prol
  %indvars.iv.prol = phi i64 [ %indvars.iv.next.prol, %.lr.ph.prol ], [ %indvars.iv.ph, %.lr.ph.preheader15 ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader15 ]
  %9 = getelementptr inbounds double, ptr %1, i64 %indvars.iv.prol
  %10 = load double, ptr %9, align 8, !tbaa !5
  %11 = fmul double %10, 2.000000e+00
  %12 = getelementptr inbounds double, ptr %2, i64 %indvars.iv.prol
  store double %11, ptr %12, align 8, !tbaa !5
  %indvars.iv.next.prol = add nuw nsw i64 %indvars.iv.prol, 1
  %prol.iter.next = add i64 %prol.iter, 1
  %prol.iter.cmp.not = icmp eq i64 %prol.iter.next, %xtraiter
  br i1 %prol.iter.cmp.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol, !llvm.loop !9

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader15
  %indvars.iv.unr = phi i64 [ %indvars.iv.ph, %.lr.ph.preheader15 ], [ %indvars.iv.next.prol, %.lr.ph.prol ]
  %13 = sub nsw i64 %indvars.iv.ph, %wide.trip.count
  %14 = icmp ugt i64 %13, -4
  br i1 %14, label %._crit_edge, label %.lr.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %wide.trip.count, 2147483644
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %15 = getelementptr inbounds double, ptr %1, i64 %index
  %16 = getelementptr inbounds i8, ptr %15, i64 16
  %wide.load = load <2 x double>, ptr %15, align 8, !tbaa !5
  %wide.load14 = load <2 x double>, ptr %16, align 8, !tbaa !5
  %17 = fmul <2 x double> %wide.load, <double 2.000000e+00, double 2.000000e+00>
  %18 = fmul <2 x double> %wide.load14, <double 2.000000e+00, double 2.000000e+00>
  %19 = getelementptr inbounds double, ptr %2, i64 %index
  %20 = getelementptr inbounds i8, ptr %19, i64 16
  store <2 x double> %17, ptr %19, align 8, !tbaa !5
  store <2 x double> %18, ptr %20, align 8, !tbaa !5
  %index.next = add nuw i64 %index, 4
  %21 = icmp eq i64 %index.next, %n.vec
  br i1 %21, label %middle.block, label %vector.body, !llvm.loop !11

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader15

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %middle.block, %4
  %22 = getelementptr inbounds i8, ptr %3, i64 8
  %23 = load i32, ptr %22, align 8, !tbaa !15
  %.not = icmp eq i32 %23, 987
  %. = select i1 %.not, i32 0, i32 %23
  ret i32 %.

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next.3, %.lr.ph ], [ %indvars.iv.unr, %.lr.ph.prol.loopexit ]
  %24 = getelementptr inbounds double, ptr %1, i64 %indvars.iv
  %25 = load double, ptr %24, align 8, !tbaa !5
  %26 = fmul double %25, 2.000000e+00
  %27 = getelementptr inbounds double, ptr %2, i64 %indvars.iv
  store double %26, ptr %27, align 8, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %28 = getelementptr inbounds double, ptr %1, i64 %indvars.iv.next
  %29 = load double, ptr %28, align 8, !tbaa !5
  %30 = fmul double %29, 2.000000e+00
  %31 = getelementptr inbounds double, ptr %2, i64 %indvars.iv.next
  store double %30, ptr %31, align 8, !tbaa !5
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %32 = getelementptr inbounds double, ptr %1, i64 %indvars.iv.next.1
  %33 = load double, ptr %32, align 8, !tbaa !5
  %34 = fmul double %33, 2.000000e+00
  %35 = getelementptr inbounds double, ptr %2, i64 %indvars.iv.next.1
  store double %34, ptr %35, align 8, !tbaa !5
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %36 = getelementptr inbounds double, ptr %1, i64 %indvars.iv.next.2
  %37 = load double, ptr %36, align 8, !tbaa !5
  %38 = fmul double %37, 2.000000e+00
  %39 = getelementptr inbounds double, ptr %2, i64 %indvars.iv.next.2
  store double %38, ptr %39, align 8, !tbaa !5
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %exitcond.not.3 = icmp eq i64 %indvars.iv.next.3, %wide.trip.count
  br i1 %exitcond.not.3, label %._crit_edge, label %.lr.ph, !llvm.loop !19
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: readwrite) 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.unroll.disable"}
!11 = distinct !{!11, !12, !13, !14}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!"llvm.loop.isvectorized", i32 1}
!14 = !{!"llvm.loop.unroll.runtime.disable"}
!15 = !{!16, !18, i64 8}
!16 = !{!"cbdata", !17, i64 0, !18, i64 8}
!17 = !{!"any pointer", !7, i64 0}
!18 = !{!"int", !7, i64 0}
!19 = distinct !{!19, !12, !13}


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