; LLVM IR from QiaoLiuHit/LSOTB-TIR :: vlfeat-0.9.19/vl/mathop.ll (vl_kernel_js_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: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden double @vl_log2_d(double noundef) #2

; Function Attrs: nounwind uwtable
define dso_local double @_vl_kernel_js_d(i64 noundef %0, ptr noundef %1, ptr noundef %2) #3 {
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca double, align 8
  %9 = alloca double, align 8
  %10 = alloca double, align 8
  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 double, ptr %11, i64 %12
  store ptr %13, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  store double 0.000000e+00, ptr %8, align 8, !tbaa !11
  br label %14

14:                                               ; preds = %48, %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 %49

18:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  %19 = load ptr, ptr %5, align 8, !tbaa !9
  %20 = getelementptr inbounds double, ptr %19, i32 1
  store ptr %20, ptr %5, align 8, !tbaa !9
  %21 = load double, ptr %19, align 8, !tbaa !11
  store double %21, ptr %9, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #4
  %22 = load ptr, ptr %6, align 8, !tbaa !9
  %23 = getelementptr inbounds double, ptr %22, i32 1
  store ptr %23, ptr %6, align 8, !tbaa !9
  %24 = load double, ptr %22, align 8, !tbaa !11
  store double %24, ptr %10, align 8, !tbaa !11
  %25 = load double, ptr %9, align 8, !tbaa !11
  %26 = fcmp une double %25, 0.000000e+00
  br i1 %26, label %27, label %36

27:                                               ; preds = %18
  %28 = load double, ptr %9, align 8, !tbaa !11
  %29 = load double, ptr %10, align 8, !tbaa !11
  %30 = load double, ptr %9, align 8, !tbaa !11
  %31 = fdiv double %29, %30
  %32 = fadd double 1.000000e+00, %31
  %33 = call double @vl_log2_d(double noundef %32)
  %34 = load double, ptr %8, align 8, !tbaa !11
  %35 = call double @llvm.fmuladd.f64(double %28, double %33, double %34)
  store double %35, ptr %8, align 8, !tbaa !11
  br label %36

36:                                               ; preds = %27, %18
  %37 = load double, ptr %10, align 8, !tbaa !11
  %38 = fcmp une double %37, 0.000000e+00
  br i1 %38, label %39, label %48

39:                                               ; preds = %36
  %40 = load double, ptr %10, align 8, !tbaa !11
  %41 = load double, ptr %9, align 8, !tbaa !11
  %42 = load double, ptr %10, align 8, !tbaa !11
  %43 = fdiv double %41, %42
  %44 = fadd double 1.000000e+00, %43
  %45 = call double @vl_log2_d(double noundef %44)
  %46 = load double, ptr %8, align 8, !tbaa !11
  %47 = call double @llvm.fmuladd.f64(double %40, double %45, double %46)
  store double %47, ptr %8, align 8, !tbaa !11
  br label %48

48:                                               ; preds = %39, %36
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  br label %14, !llvm.loop !13

49:                                               ; preds = %14
  %50 = load double, ptr %8, align 8, !tbaa !11
  %51 = fmul double 5.000000e-01, %50
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  ret double %51
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { inlinehint 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 #3 = { 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 #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 = !{!"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: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare double @llvm.fmuladd.f64(double, double, double) #0

; Function Attrs: inlinehint nounwind uwtable
declare hidden double @vl_log2_d(double noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local double @_vl_kernel_js_d(i64 noundef %0, ptr noundef readonly %1, ptr nocapture noundef readonly %2) local_unnamed_addr #2 {
  %4 = getelementptr inbounds double, ptr %1, i64 %0
  %5 = icmp sgt i64 %0, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %3, %23
  %.022 = phi ptr [ %6, %23 ], [ %1, %3 ]
  %.01621 = phi ptr [ %8, %23 ], [ %2, %3 ]
  %.01720 = phi double [ %.2, %23 ], [ 0.000000e+00, %3 ]
  %6 = getelementptr inbounds i8, ptr %.022, i64 8
  %7 = load double, ptr %.022, align 8, !tbaa !5
  %8 = getelementptr inbounds i8, ptr %.01621, i64 8
  %9 = load double, ptr %.01621, align 8, !tbaa !5
  %10 = fcmp une double %7, 0.000000e+00
  br i1 %10, label %11, label %16

11:                                               ; preds = %.lr.ph
  %12 = fdiv double %9, %7
  %13 = fadd double %12, 1.000000e+00
  %14 = tail call double @vl_log2_d(double noundef %13)
  %15 = tail call double @llvm.fmuladd.f64(double %7, double %14, double %.01720)
  br label %16

16:                                               ; preds = %11, %.lr.ph
  %.1 = phi double [ %15, %11 ], [ %.01720, %.lr.ph ]
  %17 = fcmp une double %9, 0.000000e+00
  br i1 %17, label %18, label %23

18:                                               ; preds = %16
  %19 = fdiv double %7, %9
  %20 = fadd double %19, 1.000000e+00
  %21 = tail call double @vl_log2_d(double noundef %20)
  %22 = tail call double @llvm.fmuladd.f64(double %9, double %21, double %.1)
  br label %23

23:                                               ; preds = %18, %16
  %.2 = phi double [ %22, %18 ], [ %.1, %16 ]
  %24 = icmp ult ptr %6, %4
  br i1 %24, label %.lr.ph, label %._crit_edge.loopexit, !llvm.loop !9

._crit_edge.loopexit:                             ; preds = %23
  %25 = fmul double %.2, 5.000000e-01
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %3
  %.017.lcssa = phi double [ 0.000000e+00, %3 ], [ %25, %._crit_edge.loopexit ]
  ret double %.017.lcssa
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #1 = { inlinehint 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 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,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass