; LLVM IR from junhyeokahn/PyPnC :: pnc/planner/locomotion/towr_plus/src (atlas_crbi_helper)

; 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 @atlas_crbi_helper_fill(ptr noundef %0, i64 noundef %1, double noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca double, align 8
  %7 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  store double %2, ptr %6, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = icmp ne ptr %8, null
  br i1 %9, label %10, label %23

10:                                               ; preds = %3
  store i64 0, ptr %7, align 8, !tbaa !9
  br label %11

11:                                               ; preds = %19, %10
  %12 = load i64, ptr %7, align 8, !tbaa !9
  %13 = load i64, ptr %5, align 8, !tbaa !9
  %14 = icmp slt i64 %12, %13
  br i1 %14, label %15, label %22

15:                                               ; preds = %11
  %16 = load double, ptr %6, align 8, !tbaa !11
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds double, ptr %17, i32 1
  store ptr %18, ptr %4, align 8, !tbaa !5
  store double %16, ptr %17, align 8, !tbaa !11
  br label %19

19:                                               ; preds = %15
  %20 = load i64, ptr %7, align 8, !tbaa !9
  %21 = add nsw i64 %20, 1
  store i64 %21, ptr %7, align 8, !tbaa !9
  br label %11, !llvm.loop !13

22:                                               ; preds = %11
  br label %23

23:                                               ; preds = %22, %3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #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(write, inaccessiblemem: none) uwtable
define dso_local void @atlas_crbi_helper_fill(ptr noundef writeonly %0, i64 noundef %1, double noundef %2) local_unnamed_addr #0 {
  %.not = icmp ne ptr %0, null
  %4 = icmp sgt i64 %1, 0
  %or.cond = and i1 %.not, %4
  br i1 %or.cond, label %.lr.ph.preheader, label %.loopexit

.lr.ph.preheader:                                 ; preds = %3
  %min.iters.check = icmp ult i64 %1, 4
  br i1 %min.iters.check, label %.lr.ph.preheader11, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %1, 9223372036854775804
  %5 = shl i64 %n.vec, 3
  %ind.end = getelementptr i8, ptr %0, i64 %5
  %broadcast.splatinsert = insertelement <2 x double> poison, double %2, 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 ]
  %offset.idx = shl i64 %index, 3
  %next.gep = getelementptr i8, ptr %0, i64 %offset.idx
  %6 = getelementptr i8, ptr %next.gep, i64 16
  store <2 x double> %broadcast.splat, ptr %next.gep, align 8, !tbaa !5
  store <2 x double> %broadcast.splat, ptr %6, align 8, !tbaa !5
  %index.next = add nuw i64 %index, 4
  %7 = icmp eq i64 %index.next, %n.vec
  br i1 %7, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %1
  br i1 %cmp.n, label %.loopexit, label %.lr.ph.preheader11

.lr.ph.preheader11:                               ; preds = %middle.block, %.lr.ph.preheader
  %.08.ph = phi i64 [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %.057.ph = phi ptr [ %0, %.lr.ph.preheader ], [ %ind.end, %middle.block ]
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader11, %.lr.ph
  %.08 = phi i64 [ %9, %.lr.ph ], [ %.08.ph, %.lr.ph.preheader11 ]
  %.057 = phi ptr [ %8, %.lr.ph ], [ %.057.ph, %.lr.ph.preheader11 ]
  %8 = getelementptr inbounds i8, ptr %.057, i64 8
  store double %2, ptr %.057, align 8, !tbaa !5
  %9 = add nuw nsw i64 %.08, 1
  %exitcond.not = icmp eq i64 %9, %1
  br i1 %exitcond.not, label %.loopexit, label %.lr.ph, !llvm.loop !13

.loopexit:                                        ; preds = %.lr.ph, %middle.block, %3
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(write, inaccessiblemem: none) 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, !12, !11}


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