; LLVM IR from kroitor/gjk.c :: gjk (averagePoint)

; 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._vec2 = type { float, float }

; 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 <2 x float> @averagePoint(ptr noundef %0, i64 noundef %1) #1 {
  %3 = alloca %struct._vec2, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  call void @llvm.memset.p0.i64(ptr align 4 %3, i8 0, i64 8, i1 false)
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !9
  br label %7

7:                                                ; preds = %29, %2
  %8 = load i64, ptr %6, align 8, !tbaa !9
  %9 = load i64, ptr %5, align 8, !tbaa !9
  %10 = icmp ult i64 %8, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %32

12:                                               ; preds = %7
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = load i64, ptr %6, align 8, !tbaa !9
  %15 = getelementptr inbounds %struct._vec2, ptr %13, i64 %14
  %16 = getelementptr inbounds %struct._vec2, ptr %15, i32 0, i32 0
  %17 = load float, ptr %16, align 4, !tbaa !11
  %18 = getelementptr inbounds %struct._vec2, ptr %3, i32 0, i32 0
  %19 = load float, ptr %18, align 4, !tbaa !11
  %20 = fadd float %19, %17
  store float %20, ptr %18, align 4, !tbaa !11
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = load i64, ptr %6, align 8, !tbaa !9
  %23 = getelementptr inbounds %struct._vec2, ptr %21, i64 %22
  %24 = getelementptr inbounds %struct._vec2, ptr %23, i32 0, i32 1
  %25 = load float, ptr %24, align 4, !tbaa !14
  %26 = getelementptr inbounds %struct._vec2, ptr %3, i32 0, i32 1
  %27 = load float, ptr %26, align 4, !tbaa !14
  %28 = fadd float %27, %25
  store float %28, ptr %26, align 4, !tbaa !14
  br label %29

29:                                               ; preds = %12
  %30 = load i64, ptr %6, align 8, !tbaa !9
  %31 = add i64 %30, 1
  store i64 %31, ptr %6, align 8, !tbaa !9
  br label %7, !llvm.loop !15

32:                                               ; preds = %11
  %33 = load i64, ptr %5, align 8, !tbaa !9
  %34 = uitofp i64 %33 to float
  %35 = getelementptr inbounds %struct._vec2, ptr %3, i32 0, i32 0
  %36 = load float, ptr %35, align 4, !tbaa !11
  %37 = fdiv float %36, %34
  store float %37, ptr %35, align 4, !tbaa !11
  %38 = load i64, ptr %5, align 8, !tbaa !9
  %39 = uitofp i64 %38 to float
  %40 = getelementptr inbounds %struct._vec2, ptr %3, i32 0, i32 1
  %41 = load float, ptr %40, align 4, !tbaa !14
  %42 = fdiv float %41, %39
  store float %42, ptr %40, align 4, !tbaa !14
  %43 = load <2 x float>, ptr %3, align 4
  ret <2 x float> %43
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind uwtable "min-legal-vector-width"="64" "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { 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", !7, i64 0}
!11 = !{!12, !13, i64 0}
!12 = !{!"_vec2", !13, i64 0, !13, i64 4}
!13 = !{!"float", !7, i64 0}
!14 = !{!12, !13, i64 4}
!15 = distinct !{!15, !16}
!16 = !{!"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"

%struct._vec2 = type { float, float }

; Function Attrs: nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local <2 x float> @averagePoint(ptr nocapture noundef readonly %0, i64 noundef %1) local_unnamed_addr #0 {
  %.not = icmp eq i64 %1, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %xtraiter = and i64 %1, 7
  %3 = icmp ult i64 %1, 8
  br i1 %3, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i64 %1, -8
  br label %.lr.ph

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa.ph = phi <2 x float> [ poison, %.lr.ph.preheader ], [ %42, %.lr.ph ]
  %.021.unr = phi i64 [ 0, %.lr.ph.preheader ], [ %43, %.lr.ph ]
  %.sroa.0.020.unr = phi <2 x float> [ zeroinitializer, %.lr.ph.preheader ], [ %42, %.lr.ph ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil
  %.021.epil = phi i64 [ %7, %.lr.ph.epil ], [ %.021.unr, %._crit_edge.loopexit.unr-lcssa ]
  %.sroa.0.020.epil = phi <2 x float> [ %6, %.lr.ph.epil ], [ %.sroa.0.020.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %4 = getelementptr inbounds %struct._vec2, ptr %0, i64 %.021.epil
  %5 = load <2 x float>, ptr %4, align 4, !tbaa !5
  %6 = fadd <2 x float> %.sroa.0.020.epil, %5
  %7 = add nuw i64 %.021.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.lr.ph.epil, !llvm.loop !9

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil, %2
  %.sroa.0.0.lcssa = phi <2 x float> [ zeroinitializer, %2 ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %6, %.lr.ph.epil ]
  %8 = uitofp i64 %1 to float
  %9 = insertelement <2 x float> poison, float %8, i64 0
  %10 = shufflevector <2 x float> %9, <2 x float> poison, <2 x i32> zeroinitializer
  %11 = fdiv <2 x float> %.sroa.0.0.lcssa, %10
  ret <2 x float> %11

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %.021 = phi i64 [ 0, %.lr.ph.preheader.new ], [ %43, %.lr.ph ]
  %.sroa.0.020 = phi <2 x float> [ zeroinitializer, %.lr.ph.preheader.new ], [ %42, %.lr.ph ]
  %niter = phi i64 [ 0, %.lr.ph.preheader.new ], [ %niter.next.7, %.lr.ph ]
  %12 = getelementptr inbounds %struct._vec2, ptr %0, i64 %.021
  %13 = load <2 x float>, ptr %12, align 4, !tbaa !5
  %14 = fadd <2 x float> %.sroa.0.020, %13
  %15 = or disjoint i64 %.021, 1
  %16 = getelementptr inbounds %struct._vec2, ptr %0, i64 %15
  %17 = load <2 x float>, ptr %16, align 4, !tbaa !5
  %18 = fadd <2 x float> %14, %17
  %19 = or disjoint i64 %.021, 2
  %20 = getelementptr inbounds %struct._vec2, ptr %0, i64 %19
  %21 = load <2 x float>, ptr %20, align 4, !tbaa !5
  %22 = fadd <2 x float> %18, %21
  %23 = or disjoint i64 %.021, 3
  %24 = getelementptr inbounds %struct._vec2, ptr %0, i64 %23
  %25 = load <2 x float>, ptr %24, align 4, !tbaa !5
  %26 = fadd <2 x float> %22, %25
  %27 = or disjoint i64 %.021, 4
  %28 = getelementptr inbounds %struct._vec2, ptr %0, i64 %27
  %29 = load <2 x float>, ptr %28, align 4, !tbaa !5
  %30 = fadd <2 x float> %26, %29
  %31 = or disjoint i64 %.021, 5
  %32 = getelementptr inbounds %struct._vec2, ptr %0, i64 %31
  %33 = load <2 x float>, ptr %32, align 4, !tbaa !5
  %34 = fadd <2 x float> %30, %33
  %35 = or disjoint i64 %.021, 6
  %36 = getelementptr inbounds %struct._vec2, ptr %0, i64 %35
  %37 = load <2 x float>, ptr %36, align 4, !tbaa !5
  %38 = fadd <2 x float> %34, %37
  %39 = or disjoint i64 %.021, 7
  %40 = getelementptr inbounds %struct._vec2, ptr %0, i64 %39
  %41 = load <2 x float>, ptr %40, align 4, !tbaa !5
  %42 = fadd <2 x float> %38, %41
  %43 = add nuw i64 %.021, 8
  %niter.next.7 = add i64 %niter, 8
  %niter.ncmp.7 = icmp eq i64 %niter.next.7, %unroll_iter
  br i1 %niter.ncmp.7, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !11
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: read) uwtable "min-legal-vector-width"="64" "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 = !{!"float", !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}
!12 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SLPVectorizerPass,SROAPass,SimplifyCFGPass