; LLVM IR from Derek-TH-Wang/quadruped_ctrl :: src/osqp/src (lin_alg)

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

10:                                               ; preds = %39, %4
  %11 = load i64, ptr %9, align 8, !tbaa !9
  %12 = load i64, ptr %8, align 8, !tbaa !9
  %13 = icmp slt i64 %11, %12
  br i1 %13, label %14, label %42

14:                                               ; preds = %10
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = load i64, ptr %9, align 8, !tbaa !9
  %17 = getelementptr inbounds double, ptr %15, i64 %16
  %18 = load double, ptr %17, align 8, !tbaa !11
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = load i64, ptr %9, align 8, !tbaa !9
  %21 = getelementptr inbounds double, ptr %19, i64 %20
  %22 = load double, ptr %21, align 8, !tbaa !11
  %23 = fcmp ogt double %18, %22
  br i1 %23, label %24, label %29

24:                                               ; preds = %14
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = load i64, ptr %9, align 8, !tbaa !9
  %27 = getelementptr inbounds double, ptr %25, i64 %26
  %28 = load double, ptr %27, align 8, !tbaa !11
  br label %34

29:                                               ; preds = %14
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  %31 = load i64, ptr %9, align 8, !tbaa !9
  %32 = getelementptr inbounds double, ptr %30, i64 %31
  %33 = load double, ptr %32, align 8, !tbaa !11
  br label %34

34:                                               ; preds = %29, %24
  %35 = phi double [ %28, %24 ], [ %33, %29 ]
  %36 = load ptr, ptr %7, align 8, !tbaa !5
  %37 = load i64, ptr %9, align 8, !tbaa !9
  %38 = getelementptr inbounds double, ptr %36, i64 %37
  store double %35, ptr %38, align 8, !tbaa !11
  br label %39

39:                                               ; preds = %34
  %40 = load i64, ptr %9, align 8, !tbaa !9
  %41 = add nsw i64 %40, 1
  store i64 %41, ptr %9, align 8, !tbaa !9
  br label %10, !llvm.loop !13

42:                                               ; preds = %10
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long long", !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: readwrite) uwtable
define dso_local void @vec_ew_max_vec(ptr nocapture noundef readonly %0, ptr nocapture noundef readonly %1, ptr nocapture noundef writeonly %2, i64 noundef %3) local_unnamed_addr #0 {
  %5 = ptrtoint ptr %1 to i64
  %6 = ptrtoint ptr %0 to i64
  %7 = ptrtoint ptr %2 to i64
  %8 = icmp sgt i64 %3, 0
  br i1 %8, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %4
  %min.iters.check = icmp ult i64 %3, 8
  br i1 %min.iters.check, label %.lr.ph.preheader19, label %vector.memcheck

vector.memcheck:                                  ; preds = %.lr.ph.preheader
  %9 = sub i64 %7, %6
  %diff.check = icmp ult i64 %9, 32
  %10 = sub i64 %7, %5
  %diff.check15 = icmp ult i64 %10, 32
  %conflict.rdx = or i1 %diff.check, %diff.check15
  br i1 %conflict.rdx, label %.lr.ph.preheader19, label %vector.ph

vector.ph:                                        ; preds = %vector.memcheck
  %n.vec = and i64 %3, 9223372036854775804
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %11 = getelementptr inbounds double, ptr %0, i64 %index
  %12 = getelementptr inbounds i8, ptr %11, i64 16
  %wide.load = load <2 x double>, ptr %11, align 8, !tbaa !5
  %wide.load16 = load <2 x double>, ptr %12, align 8, !tbaa !5
  %13 = getelementptr inbounds double, ptr %1, i64 %index
  %14 = getelementptr inbounds i8, ptr %13, i64 16
  %wide.load17 = load <2 x double>, ptr %13, align 8, !tbaa !5
  %wide.load18 = load <2 x double>, ptr %14, align 8, !tbaa !5
  %15 = fcmp ogt <2 x double> %wide.load, %wide.load17
  %16 = fcmp ogt <2 x double> %wide.load16, %wide.load18
  %17 = select <2 x i1> %15, <2 x double> %wide.load, <2 x double> %wide.load17
  %18 = select <2 x i1> %16, <2 x double> %wide.load16, <2 x double> %wide.load18
  %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 !9

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %3
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader19

.lr.ph.preheader19:                               ; preds = %middle.block, %vector.memcheck, %.lr.ph.preheader
  %.014.ph = phi i64 [ 0, %vector.memcheck ], [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %xtraiter = and i64 %3, 1
  %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.preheader19
  %22 = getelementptr inbounds double, ptr %0, i64 %.014.ph
  %23 = load double, ptr %22, align 8, !tbaa !5
  %24 = getelementptr inbounds double, ptr %1, i64 %.014.ph
  %25 = load double, ptr %24, align 8, !tbaa !5
  %26 = fcmp ogt double %23, %25
  %..prol = select i1 %26, double %23, double %25
  %27 = getelementptr inbounds double, ptr %2, i64 %.014.ph
  store double %..prol, ptr %27, align 8, !tbaa !5
  %28 = or disjoint i64 %.014.ph, 1
  br label %.lr.ph.prol.loopexit

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader19
  %.014.unr = phi i64 [ %.014.ph, %.lr.ph.preheader19 ], [ %28, %.lr.ph.prol ]
  %29 = add nsw i64 %3, -1
  %30 = icmp eq i64 %.014.ph, %29
  br i1 %30, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %.014 = phi i64 [ %44, %.lr.ph ], [ %.014.unr, %.lr.ph.prol.loopexit ]
  %31 = getelementptr inbounds double, ptr %0, i64 %.014
  %32 = load double, ptr %31, align 8, !tbaa !5
  %33 = getelementptr inbounds double, ptr %1, i64 %.014
  %34 = load double, ptr %33, align 8, !tbaa !5
  %35 = fcmp ogt double %32, %34
  %. = select i1 %35, double %32, double %34
  %36 = getelementptr inbounds double, ptr %2, i64 %.014
  store double %., ptr %36, align 8, !tbaa !5
  %37 = add nuw nsw i64 %.014, 1
  %38 = getelementptr inbounds double, ptr %0, i64 %37
  %39 = load double, ptr %38, align 8, !tbaa !5
  %40 = getelementptr inbounds double, ptr %1, i64 %37
  %41 = load double, ptr %40, align 8, !tbaa !5
  %42 = fcmp ogt double %39, %41
  %..1 = select i1 %42, double %39, double %41
  %43 = getelementptr inbounds double, ptr %2, i64 %37
  store double %..1, ptr %43, align 8, !tbaa !5
  %44 = add nuw nsw i64 %.014, 2
  %exitcond.not.1 = icmp eq i64 %44, %3
  br i1 %exitcond.not.1, label %._crit_edge, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %middle.block, %4
  ret void
}

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, !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,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass