; LLVM IR from Derek-TH-Wang/quadruped_ctrl :: src/osqp/lin_sys/direct/qdldl/qdldl_sources/src (qdldl)

; 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: nounwind uwtable
declare dso_local void @QDLDL_Lsolve(i64 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local void @QDLDL_Ltsolve(i64 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local void @QDLDL_solve(i64 noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, ptr noundef %4, ptr noundef %5) #1 {
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca ptr, align 8
  %13 = alloca i64, align 8
  store i64 %0, ptr %7, align 8, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !9
  store ptr %2, ptr %9, align 8, !tbaa !9
  store ptr %3, ptr %10, align 8, !tbaa !9
  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 8, ptr %13) #2
  %14 = load i64, ptr %7, align 8, !tbaa !5
  %15 = load ptr, ptr %8, align 8, !tbaa !9
  %16 = load ptr, ptr %9, align 8, !tbaa !9
  %17 = load ptr, ptr %10, align 8, !tbaa !9
  %18 = load ptr, ptr %12, align 8, !tbaa !9
  call void @QDLDL_Lsolve(i64 noundef %14, ptr noundef %15, ptr noundef %16, ptr noundef %17, ptr noundef %18)
  store i64 0, ptr %13, align 8, !tbaa !5
  br label %19

19:                                               ; preds = %33, %6
  %20 = load i64, ptr %13, align 8, !tbaa !5
  %21 = load i64, ptr %7, align 8, !tbaa !5
  %22 = icmp slt i64 %20, %21
  br i1 %22, label %23, label %36

23:                                               ; preds = %19
  %24 = load ptr, ptr %11, align 8, !tbaa !9
  %25 = load i64, ptr %13, align 8, !tbaa !5
  %26 = getelementptr inbounds double, ptr %24, i64 %25
  %27 = load double, ptr %26, align 8, !tbaa !11
  %28 = load ptr, ptr %12, align 8, !tbaa !9
  %29 = load i64, ptr %13, align 8, !tbaa !5
  %30 = getelementptr inbounds double, ptr %28, i64 %29
  %31 = load double, ptr %30, align 8, !tbaa !11
  %32 = fmul double %31, %27
  store double %32, ptr %30, align 8, !tbaa !11
  br label %33

33:                                               ; preds = %23
  %34 = load i64, ptr %13, align 8, !tbaa !5
  %35 = add nsw i64 %34, 1
  store i64 %35, ptr %13, align 8, !tbaa !5
  br label %19, !llvm.loop !13

36:                                               ; preds = %19
  %37 = load i64, ptr %7, align 8, !tbaa !5
  %38 = load ptr, ptr %8, align 8, !tbaa !9
  %39 = load ptr, ptr %9, align 8, !tbaa !9
  %40 = load ptr, ptr %10, align 8, !tbaa !9
  %41 = load ptr, ptr %12, align 8, !tbaa !9
  call void @QDLDL_Ltsolve(i64 noundef %37, ptr noundef %38, ptr noundef %39, ptr noundef %40, ptr noundef %41)
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #2
  ret void
}

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 = !{!"long long", !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"}


; 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: nounwind uwtable
declare dso_local void @QDLDL_Lsolve(i64 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local void @QDLDL_Ltsolve(i64 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @QDLDL_solve(i64 noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, ptr nocapture noundef readonly %4, ptr noundef %5) local_unnamed_addr #0 {
  tail call void @QDLDL_Lsolve(i64 noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, ptr noundef %5)
  %7 = icmp sgt i64 %0, 0
  br i1 %7, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %6
  %min.iters.check = icmp ult i64 %0, 6
  br i1 %min.iters.check, label %.lr.ph.preheader22, label %vector.memcheck

vector.memcheck:                                  ; preds = %.lr.ph.preheader
  %8 = shl i64 %0, 3
  %scevgep = getelementptr i8, ptr %5, i64 %8
  %scevgep18 = getelementptr i8, ptr %4, i64 %8
  %bound0 = icmp ugt ptr %scevgep18, %5
  %bound1 = icmp ugt ptr %scevgep, %4
  %found.conflict = and i1 %bound0, %bound1
  br i1 %found.conflict, label %.lr.ph.preheader22, label %vector.ph

vector.ph:                                        ; preds = %vector.memcheck
  %n.vec = and i64 %0, 9223372036854775804
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %9 = getelementptr inbounds double, ptr %4, i64 %index
  %10 = getelementptr inbounds i8, ptr %9, i64 16
  %wide.load = load <2 x double>, ptr %9, align 8, !tbaa !5, !alias.scope !9
  %wide.load19 = load <2 x double>, ptr %10, align 8, !tbaa !5, !alias.scope !9
  %11 = getelementptr inbounds double, ptr %5, i64 %index
  %12 = getelementptr inbounds i8, ptr %11, i64 16
  %wide.load20 = load <2 x double>, ptr %11, align 8, !tbaa !5, !alias.scope !12, !noalias !9
  %wide.load21 = load <2 x double>, ptr %12, align 8, !tbaa !5, !alias.scope !12, !noalias !9
  %13 = fmul <2 x double> %wide.load, %wide.load20
  %14 = fmul <2 x double> %wide.load19, %wide.load21
  store <2 x double> %13, ptr %11, align 8, !tbaa !5, !alias.scope !12, !noalias !9
  store <2 x double> %14, ptr %12, align 8, !tbaa !5, !alias.scope !12, !noalias !9
  %index.next = add nuw i64 %index, 4
  %15 = icmp eq i64 %index.next, %n.vec
  br i1 %15, label %middle.block, label %vector.body, !llvm.loop !14

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %0
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader22

.lr.ph.preheader22:                               ; preds = %middle.block, %vector.memcheck, %.lr.ph.preheader
  %.017.ph = phi i64 [ 0, %vector.memcheck ], [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %xtraiter = and i64 %0, 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.preheader22, %.lr.ph.prol
  %.017.prol = phi i64 [ %21, %.lr.ph.prol ], [ %.017.ph, %.lr.ph.preheader22 ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader22 ]
  %16 = getelementptr inbounds double, ptr %4, i64 %.017.prol
  %17 = load double, ptr %16, align 8, !tbaa !5
  %18 = getelementptr inbounds double, ptr %5, i64 %.017.prol
  %19 = load double, ptr %18, align 8, !tbaa !5
  %20 = fmul double %17, %19
  store double %20, ptr %18, align 8, !tbaa !5
  %21 = add nuw nsw i64 %.017.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 !18

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader22
  %.017.unr = phi i64 [ %.017.ph, %.lr.ph.preheader22 ], [ %21, %.lr.ph.prol ]
  %22 = sub nsw i64 %.017.ph, %0
  %23 = icmp ugt i64 %22, -4
  br i1 %23, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %.017 = phi i64 [ %47, %.lr.ph ], [ %.017.unr, %.lr.ph.prol.loopexit ]
  %24 = getelementptr inbounds double, ptr %4, i64 %.017
  %25 = load double, ptr %24, align 8, !tbaa !5
  %26 = getelementptr inbounds double, ptr %5, i64 %.017
  %27 = load double, ptr %26, align 8, !tbaa !5
  %28 = fmul double %25, %27
  store double %28, ptr %26, align 8, !tbaa !5
  %29 = add nuw nsw i64 %.017, 1
  %30 = getelementptr inbounds double, ptr %4, i64 %29
  %31 = load double, ptr %30, align 8, !tbaa !5
  %32 = getelementptr inbounds double, ptr %5, i64 %29
  %33 = load double, ptr %32, align 8, !tbaa !5
  %34 = fmul double %31, %33
  store double %34, ptr %32, align 8, !tbaa !5
  %35 = add nuw nsw i64 %.017, 2
  %36 = getelementptr inbounds double, ptr %4, i64 %35
  %37 = load double, ptr %36, align 8, !tbaa !5
  %38 = getelementptr inbounds double, ptr %5, i64 %35
  %39 = load double, ptr %38, align 8, !tbaa !5
  %40 = fmul double %37, %39
  store double %40, ptr %38, align 8, !tbaa !5
  %41 = add nuw nsw i64 %.017, 3
  %42 = getelementptr inbounds double, ptr %4, i64 %41
  %43 = load double, ptr %42, align 8, !tbaa !5
  %44 = getelementptr inbounds double, ptr %5, i64 %41
  %45 = load double, ptr %44, align 8, !tbaa !5
  %46 = fmul double %43, %45
  store double %46, ptr %44, align 8, !tbaa !5
  %47 = add nuw nsw i64 %.017, 4
  %exitcond.not.3 = icmp eq i64 %47, %0
  br i1 %exitcond.not.3, label %._crit_edge, label %.lr.ph, !llvm.loop !20

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %middle.block, %6
  tail call void @QDLDL_Ltsolve(i64 noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, ptr noundef %5)
  ret void
}

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" }

!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 = !{!10}
!10 = distinct !{!10, !11}
!11 = distinct !{!11, !"LVerDomain"}
!12 = !{!13}
!13 = distinct !{!13, !11}
!14 = distinct !{!14, !15, !16, !17}
!15 = !{!"llvm.loop.mustprogress"}
!16 = !{!"llvm.loop.isvectorized", i32 1}
!17 = !{!"llvm.loop.unroll.runtime.disable"}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.unroll.disable"}
!20 = distinct !{!20, !15, !16}


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