; LLVM IR from QiaoLiuHit/LSOTB-TIR :: vlfeat-0.9.19/vl (gmm)

; 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._VlGMM = type { i32, i64, i64, i64, i64, i64, i32, ptr, ptr, ptr, ptr, ptr, i32, ptr, double, i32 }

; 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 @vl_gmm_set_covariance_lower_bound(ptr noundef %0, double noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca double, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store double %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !11
  br label %6

6:                                                ; preds = %21, %2
  %7 = load i32, ptr %5, align 4, !tbaa !11
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct._VlGMM, ptr %8, i32 0, i32 1
  %10 = load i64, ptr %9, align 8, !tbaa !13
  %11 = trunc i64 %10 to i32
  %12 = icmp slt i32 %7, %11
  br i1 %12, label %13, label %24

13:                                               ; preds = %6
  %14 = load double, ptr %4, align 8, !tbaa !9
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct._VlGMM, ptr %15, i32 0, i32 11
  %17 = load ptr, ptr %16, align 8, !tbaa !16
  %18 = load i32, ptr %5, align 4, !tbaa !11
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds double, ptr %17, i64 %19
  store double %14, ptr %20, align 8, !tbaa !9
  br label %21

21:                                               ; preds = %13
  %22 = load i32, ptr %5, align 4, !tbaa !11
  %23 = add nsw i32 %22, 1
  store i32 %23, ptr %5, align 4, !tbaa !11
  br label %6, !llvm.loop !17

24:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #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 = !{!"double", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!14, !15, i64 8}
!14 = !{!"_VlGMM", !12, i64 0, !15, i64 8, !15, i64 16, !15, i64 24, !15, i64 32, !15, i64 40, !12, i64 48, !6, i64 56, !6, i64 64, !6, i64 72, !6, i64 80, !6, i64 88, !12, i64 96, !6, i64 104, !10, i64 112, !12, i64 120}
!15 = !{!"long long", !7, i64 0}
!16 = !{!14, !6, i64 88}
!17 = distinct !{!17, !18}
!18 = !{!"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, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local void @vl_gmm_set_covariance_lower_bound(ptr nocapture noundef readonly %0, double noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  %4 = load i64, ptr %3, align 8, !tbaa !5
  %5 = trunc i64 %4 to i32
  %6 = icmp sgt i32 %5, 0
  br i1 %6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2
  %7 = getelementptr inbounds i8, ptr %0, i64 88
  %8 = load ptr, ptr %7, align 8, !tbaa !13
  %wide.trip.count = and i64 %4, 2147483647
  %min.iters.check = icmp ult i64 %wide.trip.count, 4
  br i1 %min.iters.check, label %scalar.ph.preheader, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph
  %n.mod.vf = and i64 %4, 3
  %n.vec = sub nsw i64 %wide.trip.count, %n.mod.vf
  %broadcast.splatinsert = insertelement <2 x double> poison, double %1, 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 ]
  %9 = getelementptr inbounds double, ptr %8, i64 %index
  %10 = getelementptr inbounds i8, ptr %9, i64 16
  store <2 x double> %broadcast.splat, ptr %9, align 8, !tbaa !14
  store <2 x double> %broadcast.splat, ptr %10, align 8, !tbaa !14
  %index.next = add nuw i64 %index, 4
  %11 = icmp eq i64 %index.next, %n.vec
  br i1 %11, label %middle.block, label %vector.body, !llvm.loop !15

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.mod.vf, 0
  br i1 %cmp.n, label %._crit_edge, label %scalar.ph.preheader

scalar.ph.preheader:                              ; preds = %middle.block, %.lr.ph
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph ], [ %n.vec, %middle.block ]
  br label %scalar.ph

scalar.ph:                                        ; preds = %scalar.ph.preheader, %scalar.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %scalar.ph ], [ %indvars.iv.ph, %scalar.ph.preheader ]
  %12 = getelementptr inbounds double, ptr %8, i64 %indvars.iv
  store double %1, ptr %12, align 8, !tbaa !14
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %scalar.ph, !llvm.loop !19

._crit_edge:                                      ; preds = %scalar.ph, %middle.block, %2
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(write, argmem: readwrite, 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, !10, i64 8}
!6 = !{!"_VlGMM", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !10, i64 40, !7, i64 48, !11, i64 56, !11, i64 64, !11, i64 72, !11, i64 80, !11, i64 88, !7, i64 96, !11, i64 104, !12, i64 112, !7, i64 120}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long long", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!"double", !8, i64 0}
!13 = !{!6, !11, i64 88}
!14 = !{!12, !12, i64 0}
!15 = distinct !{!15, !16, !17, !18}
!16 = !{!"llvm.loop.mustprogress"}
!17 = !{!"llvm.loop.isvectorized", i32 1}
!18 = !{!"llvm.loop.unroll.runtime.disable"}
!19 = distinct !{!19, !16, !18, !17}


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