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

; 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 float @_vl_distance_hellinger_f(i64 noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca float, align 4
  %9 = alloca float, align 4
  %10 = alloca float, align 4
  store i64 %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  %11 = load ptr, ptr %5, align 8, !tbaa !9
  %12 = load i64, ptr %4, align 8, !tbaa !5
  %13 = getelementptr inbounds float, ptr %11, i64 %12
  store ptr %13, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store float 0.000000e+00, ptr %8, align 4, !tbaa !11
  br label %14

14:                                               ; preds = %18, %3
  %15 = load ptr, ptr %5, align 8, !tbaa !9
  %16 = load ptr, ptr %7, align 8, !tbaa !9
  %17 = icmp ult ptr %15, %16
  br i1 %17, label %18, label %39

18:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %19 = load ptr, ptr %5, align 8, !tbaa !9
  %20 = getelementptr inbounds float, ptr %19, i32 1
  store ptr %20, ptr %5, align 8, !tbaa !9
  %21 = load float, ptr %19, align 4, !tbaa !11
  store float %21, ptr %9, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #4
  %22 = load ptr, ptr %6, align 8, !tbaa !9
  %23 = getelementptr inbounds float, ptr %22, i32 1
  store ptr %23, ptr %6, align 8, !tbaa !9
  %24 = load float, ptr %22, align 4, !tbaa !11
  store float %24, ptr %10, align 4, !tbaa !11
  %25 = load float, ptr %9, align 4, !tbaa !11
  %26 = load float, ptr %10, align 4, !tbaa !11
  %27 = fadd float %25, %26
  %28 = fpext float %27 to double
  %29 = load float, ptr %9, align 4, !tbaa !11
  %30 = load float, ptr %10, align 4, !tbaa !11
  %31 = fmul float %29, %30
  %32 = call float @sqrtf(float noundef %31) #4
  %33 = fpext float %32 to double
  %34 = call double @llvm.fmuladd.f64(double -2.000000e+00, double %33, double %28)
  %35 = load float, ptr %8, align 4, !tbaa !11
  %36 = fpext float %35 to double
  %37 = fadd double %36, %34
  %38 = fptrunc double %37 to float
  store float %38, ptr %8, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  br label %14, !llvm.loop !13

39:                                               ; preds = %14
  %40 = load float, ptr %8, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  ret float %40
}

; Function Attrs: nounwind
declare float @sqrtf(float noundef) #2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #3

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 "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 #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { 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 = !{!"float", !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 nounwind memory(readwrite, inaccessiblemem: write) uwtable
define dso_local float @_vl_distance_hellinger_f(i64 noundef %0, ptr noundef readonly %1, ptr nocapture noundef readonly %2) local_unnamed_addr #0 {
  %4 = getelementptr inbounds float, ptr %1, i64 %0
  %5 = icmp sgt i64 %0, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.015 = phi ptr [ %6, %.lr.ph ], [ %1, %3 ]
  %.01114 = phi ptr [ %8, %.lr.ph ], [ %2, %3 ]
  %.01213 = phi float [ %18, %.lr.ph ], [ 0.000000e+00, %3 ]
  %6 = getelementptr inbounds i8, ptr %.015, i64 4
  %7 = load float, ptr %.015, align 4, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %.01114, i64 4
  %9 = load float, ptr %.01114, align 4, !tbaa !5
  %10 = fadd float %7, %9
  %11 = fpext float %10 to double
  %12 = fmul float %7, %9
  %13 = tail call float @sqrtf(float noundef %12) #3
  %14 = fpext float %13 to double
  %15 = tail call double @llvm.fmuladd.f64(double %14, double -2.000000e+00, double %11)
  %16 = fpext float %.01213 to double
  %17 = fadd double %15, %16
  %18 = fptrunc double %17 to float
  %19 = icmp ult ptr %6, %4
  br i1 %19, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %3
  %.012.lcssa = phi float [ 0.000000e+00, %3 ], [ %18, %.lr.ph ]
  ret float %.012.lcssa
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(write)
declare float @sqrtf(float noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #2

attributes #0 = { nofree nounwind memory(readwrite, inaccessiblemem: write) 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 #1 = { mustprogress nofree nounwind willreturn memory(write) "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 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = !{!"float", !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,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass