; LLVM IR from simbody/simbody :: SimTKmath/Optimizers/src/IpOpt (IpTripletHelper)

; 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: mustprogress nounwind uwtable
define dso_local void @_ZN10SimTKIpopt13TripletHelper11FillRowCol_EiRKNS_10DiagMatrixEiiPiS4_(i32 noundef %0, ptr noundef nonnull align 8 dereferenceable(88) %1, i32 noundef %2, i32 noundef %3, ptr noundef %4, ptr noundef %5) #1 align 2 {
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca ptr, align 8
  %12 = alloca ptr, align 8
  %13 = alloca i32, align 4
  store i32 %0, ptr %7, align 4, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !9
  store i32 %2, ptr %9, align 4, !tbaa !5
  store i32 %3, ptr %10, align 4, !tbaa !5
  store ptr %4, ptr %11, align 8, !tbaa !9
  store ptr %5, ptr %12, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #2
  store i32 0, ptr %13, align 4, !tbaa !5
  br label %14

14:                                               ; preds = %36, %6
  %15 = load i32, ptr %13, align 4, !tbaa !5
  %16 = load i32, ptr %7, align 4, !tbaa !5
  %17 = icmp slt i32 %15, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #2
  br label %39

19:                                               ; preds = %14
  %20 = load i32, ptr %13, align 4, !tbaa !5
  %21 = load i32, ptr %9, align 4, !tbaa !5
  %22 = add nsw i32 %20, %21
  %23 = add nsw i32 %22, 1
  %24 = load ptr, ptr %11, align 8, !tbaa !9
  %25 = load i32, ptr %13, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds i32, ptr %24, i64 %26
  store i32 %23, ptr %27, align 4, !tbaa !5
  %28 = load i32, ptr %13, align 4, !tbaa !5
  %29 = load i32, ptr %10, align 4, !tbaa !5
  %30 = add nsw i32 %28, %29
  %31 = add nsw i32 %30, 1
  %32 = load ptr, ptr %12, align 8, !tbaa !9
  %33 = load i32, ptr %13, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds i32, ptr %32, i64 %34
  store i32 %31, ptr %35, align 4, !tbaa !5
  br label %36

36:                                               ; preds = %19
  %37 = load i32, ptr %13, align 4, !tbaa !5
  %38 = add nsw i32 %37, 1
  store i32 %38, ptr %13, align 4, !tbaa !5
  br label %14, !llvm.loop !11

39:                                               ; preds = %18
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind memory(argmem: write) uwtable
define dso_local void @_ZN10SimTKIpopt13TripletHelper11FillRowCol_EiRKNS_10DiagMatrixEiiPiS4_(i32 noundef %0, ptr nocapture noundef nonnull readnone align 8 dereferenceable(88) %1, i32 noundef %2, i32 noundef %3, ptr nocapture noundef writeonly %4, ptr nocapture noundef writeonly %5) local_unnamed_addr #0 align 2 {
  %7 = icmp sgt i32 %0, 0
  br i1 %7, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %6
  %8 = ptrtoint ptr %5 to i64
  %9 = ptrtoint ptr %4 to i64
  %10 = add i32 %2, 1
  %11 = add i32 %3, 1
  %wide.trip.count = zext nneg i32 %0 to i64
  %min.iters.check = icmp ult i32 %0, 8
  %12 = sub i64 %8, %9
  %diff.check = icmp ult i64 %12, 32
  %or.cond = or i1 %min.iters.check, %diff.check
  br i1 %or.cond, label %scalar.ph.preheader, label %vector.ph

scalar.ph.preheader:                              ; preds = %middle.block, %.lr.ph
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph ], [ %n.vec, %middle.block ]
  %xtraiter = and i64 %wide.trip.count, 1
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %scalar.ph.prol.loopexit, label %scalar.ph.prol

scalar.ph.prol:                                   ; preds = %scalar.ph.preheader
  %13 = trunc nuw nsw i64 %indvars.iv.ph to i32
  %14 = add i32 %10, %13
  %15 = getelementptr inbounds i32, ptr %4, i64 %indvars.iv.ph
  store i32 %14, ptr %15, align 4, !tbaa !5
  %16 = add i32 %11, %13
  %17 = getelementptr inbounds i32, ptr %5, i64 %indvars.iv.ph
  store i32 %16, ptr %17, align 4, !tbaa !5
  %indvars.iv.next.prol = or disjoint i64 %indvars.iv.ph, 1
  br label %scalar.ph.prol.loopexit

scalar.ph.prol.loopexit:                          ; preds = %scalar.ph.prol, %scalar.ph.preheader
  %indvars.iv.unr = phi i64 [ %indvars.iv.ph, %scalar.ph.preheader ], [ %indvars.iv.next.prol, %scalar.ph.prol ]
  %18 = add nsw i64 %wide.trip.count, -1
  %19 = icmp eq i64 %indvars.iv.ph, %18
  br i1 %19, label %._crit_edge, label %scalar.ph

vector.ph:                                        ; preds = %.lr.ph
  %n.vec = and i64 %wide.trip.count, 2147483640
  %broadcast.splatinsert = insertelement <4 x i32> poison, i32 %10, i64 0
  %broadcast.splat = shufflevector <4 x i32> %broadcast.splatinsert, <4 x i32> poison, <4 x i32> zeroinitializer
  %broadcast.splatinsert13 = insertelement <4 x i32> poison, i32 %11, i64 0
  %broadcast.splat14 = shufflevector <4 x i32> %broadcast.splatinsert13, <4 x i32> poison, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.ind = phi <4 x i32> [ <i32 0, i32 1, i32 2, i32 3>, %vector.ph ], [ %vec.ind.next, %vector.body ]
  %step.add = add <4 x i32> %vec.ind, <i32 4, i32 4, i32 4, i32 4>
  %20 = add <4 x i32> %broadcast.splat, %vec.ind
  %21 = add <4 x i32> %broadcast.splat, %step.add
  %22 = getelementptr inbounds i32, ptr %4, i64 %index
  %23 = getelementptr inbounds i8, ptr %22, i64 16
  store <4 x i32> %20, ptr %22, align 4, !tbaa !5
  store <4 x i32> %21, ptr %23, align 4, !tbaa !5
  %24 = add <4 x i32> %broadcast.splat14, %vec.ind
  %25 = add <4 x i32> %broadcast.splat14, %step.add
  %26 = getelementptr inbounds i32, ptr %5, i64 %index
  %27 = getelementptr inbounds i8, ptr %26, i64 16
  store <4 x i32> %24, ptr %26, align 4, !tbaa !5
  store <4 x i32> %25, ptr %27, align 4, !tbaa !5
  %index.next = add nuw i64 %index, 8
  %vec.ind.next = add <4 x i32> %vec.ind, <i32 8, i32 8, i32 8, i32 8>
  %28 = icmp eq i64 %index.next, %n.vec
  br i1 %28, label %middle.block, label %vector.body, !llvm.loop !9

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

._crit_edge:                                      ; preds = %scalar.ph.prol.loopexit, %scalar.ph, %middle.block, %6
  ret void

scalar.ph:                                        ; preds = %scalar.ph.prol.loopexit, %scalar.ph
  %indvars.iv = phi i64 [ %indvars.iv.next.1, %scalar.ph ], [ %indvars.iv.unr, %scalar.ph.prol.loopexit ]
  %29 = trunc nuw nsw i64 %indvars.iv to i32
  %30 = add i32 %10, %29
  %31 = getelementptr inbounds i32, ptr %4, i64 %indvars.iv
  store i32 %30, ptr %31, align 4, !tbaa !5
  %32 = add i32 %11, %29
  %33 = getelementptr inbounds i32, ptr %5, i64 %indvars.iv
  store i32 %32, ptr %33, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %34 = trunc nuw nsw i64 %indvars.iv.next to i32
  %35 = add i32 %10, %34
  %36 = getelementptr inbounds i32, ptr %4, i64 %indvars.iv.next
  store i32 %35, ptr %36, align 4, !tbaa !5
  %37 = add i32 %11, %34
  %38 = getelementptr inbounds i32, ptr %5, i64 %indvars.iv.next
  store i32 %37, ptr %38, align 4, !tbaa !5
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %exitcond.not.1 = icmp eq i64 %indvars.iv.next.1, %wide.trip.count
  br i1 %exitcond.not.1, label %._crit_edge, label %scalar.ph, !llvm.loop !13
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind memory(argmem: write) 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10, !11}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass