; LLVM IR from QiaoLiuHit/LSOTB-TIR :: vlfeat-0.9.19/vl/mathop.ll (vl_distance_mahalanobis_sq_d)

; 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 double @_vl_distance_mahalanobis_sq_d(i64 noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3) #1 {
  %5 = alloca i64, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca double, align 8
  %11 = alloca double, align 8
  store i64 %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !9
  store ptr %2, ptr %7, align 8, !tbaa !9
  store ptr %3, ptr %8, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %12 = load ptr, ptr %6, align 8, !tbaa !9
  %13 = load i64, ptr %5, align 8, !tbaa !5
  %14 = getelementptr inbounds double, ptr %12, i64 %13
  store ptr %14, ptr %9, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  store double 0.000000e+00, ptr %10, align 8, !tbaa !11
  br label %15

15:                                               ; preds = %19, %4
  %16 = load ptr, ptr %6, align 8, !tbaa !9
  %17 = load ptr, ptr %9, align 8, !tbaa !9
  %18 = icmp ult ptr %16, %17
  br i1 %18, label %19, label %36

19:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #2
  %20 = load ptr, ptr %6, align 8, !tbaa !9
  %21 = getelementptr inbounds double, ptr %20, i32 1
  store ptr %21, ptr %6, align 8, !tbaa !9
  %22 = load double, ptr %20, align 8, !tbaa !11
  %23 = load ptr, ptr %7, align 8, !tbaa !9
  %24 = getelementptr inbounds double, ptr %23, i32 1
  store ptr %24, ptr %7, align 8, !tbaa !9
  %25 = load double, ptr %23, align 8, !tbaa !11
  %26 = fsub double %22, %25
  store double %26, ptr %11, align 8, !tbaa !11
  %27 = load double, ptr %11, align 8, !tbaa !11
  %28 = load double, ptr %11, align 8, !tbaa !11
  %29 = fmul double %27, %28
  %30 = load ptr, ptr %8, align 8, !tbaa !9
  %31 = getelementptr inbounds double, ptr %30, i32 1
  store ptr %31, ptr %8, align 8, !tbaa !9
  %32 = load double, ptr %30, align 8, !tbaa !11
  %33 = fdiv double %29, %32
  %34 = load double, ptr %10, align 8, !tbaa !11
  %35 = fadd double %34, %33
  store double %35, ptr %10, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #2
  br label %15, !llvm.loop !13

36:                                               ; preds = %15
  %37 = load double, ptr %10, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  ret double %37
}

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: nofree norecurse nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local double @_vl_distance_mahalanobis_sq_d(i64 noundef %0, ptr noundef readonly %1, ptr nocapture noundef readonly %2, ptr nocapture noundef readonly %3) local_unnamed_addr #0 {
  %5 = getelementptr inbounds double, ptr %1, i64 %0
  %6 = icmp sgt i64 %0, 0
  br i1 %6, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %4, %.lr.ph
  %.016 = phi ptr [ %7, %.lr.ph ], [ %1, %4 ]
  %.01015 = phi double [ %16, %.lr.ph ], [ 0.000000e+00, %4 ]
  %.01114 = phi ptr [ %9, %.lr.ph ], [ %2, %4 ]
  %.01213 = phi ptr [ %13, %.lr.ph ], [ %3, %4 ]
  %7 = getelementptr inbounds i8, ptr %.016, i64 8
  %8 = load double, ptr %.016, align 8, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %.01114, i64 8
  %10 = load double, ptr %.01114, align 8, !tbaa !5
  %11 = fsub double %8, %10
  %12 = fmul double %11, %11
  %13 = getelementptr inbounds i8, ptr %.01213, i64 8
  %14 = load double, ptr %.01213, align 8, !tbaa !5
  %15 = fdiv double %12, %14
  %16 = fadd double %.01015, %15
  %17 = icmp ult ptr %7, %5
  br i1 %17, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %4
  %.010.lcssa = phi double [ 0.000000e+00, %4 ], [ %16, %.lr.ph ]
  ret double %.010.lcssa
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, 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}
!10 = !{!"llvm.loop.mustprogress"}


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