prune unused SkNx features

src/opts/SkNx_neon.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkNx_neon_DEFINED
 #define SkNx_neon_DEFINED
 
@@ skipping 15 matching lines @@
 
 #define SHIFT32(op, v, bits) if (bits < 16) { SHIFT16(op, v, bits); } switch(bits) { \
     case 16: return op(v, 16);  case 17: return op(v, 17);  case 18: return op(v, 18); \
     case 19: return op(v, 19);  case 20: return op(v, 20);  case 21: return op(v, 21); \
     case 22: return op(v, 22);  case 23: return op(v, 23);  case 24: return op(v, 24); \
     case 25: return op(v, 25);  case 26: return op(v, 26);  case 27: return op(v, 27); \
     case 28: return op(v, 28);  case 29: return op(v, 29);  case 30: return op(v, 30); \
     case 31: return op(v, 31); } return fVec
 
 template <>
-class SkNf<2, float> {
+class SkNf<2> {
 public:
     SkNf(float32x2_t vec) : fVec(vec) {}
 
     SkNf() {}
     explicit SkNf(float val)           : fVec(vdup_n_f32(val)) {}
     static SkNf Load(const float vals[2]) { return vld1_f32(vals); }
     SkNf(float a, float b) { fVec = (float32x2_t) { a, b }; }
 
     void store(float vals[2]) const { vst1_f32(vals, fVec); }
 
@@ skipping 59 matching lines @@
         return vget_lane_u32(v,0) && vget_lane_u32(v,1);
     }
     bool anyTrue() const {
         auto v = vreinterpret_u32_f32(fVec);
         return vget_lane_u32(v,0) || vget_lane_u32(v,1);
     }
 
     float32x2_t fVec;
 };
 
-#if defined(SK_CPU_ARM64)
-template <>
-class SkNf<2, double> {
-public:
-    SkNf(float64x2_t vec) : fVec(vec) {}
-
-    SkNf() {}
-    explicit SkNf(double val)           : fVec(vdupq_n_f64(val))  {}
-    static SkNf Load(const double vals[2]) { return vld1q_f64(vals); }
-    SkNf(double a, double b) { fVec = (float64x2_t) { a, b }; }
-
-    void store(double vals[2]) const { vst1q_f64(vals, fVec); }
-
-    SkNf operator + (const SkNf& o) const { return vaddq_f64(fVec, o.fVec); }
-    SkNf operator - (const SkNf& o) const { return vsubq_f64(fVec, o.fVec); }
-    SkNf operator * (const SkNf& o) const { return vmulq_f64(fVec, o.fVec); }
-    SkNf operator / (const SkNf& o) const { return vdivq_f64(fVec, o.fVec); }
-
-    // vreinterpretq_f64_u64 and vreinterpretq_f64_u32 don't seem to exist....  weird.
-    SkNf operator==(const SkNf& o) const { return (float64x2_t)(vceqq_f64(fVec, o.fVec)); }
-    SkNf operator <(const SkNf& o) const { return (float64x2_t)(vcltq_f64(fVec, o.fVec)); }
-    SkNf operator >(const SkNf& o) const { return (float64x2_t)(vcgtq_f64(fVec, o.fVec)); }
-    SkNf operator<=(const SkNf& o) const { return (float64x2_t)(vcleq_f64(fVec, o.fVec)); }
-    SkNf operator>=(const SkNf& o) const { return (float64x2_t)(vcgeq_f64(fVec, o.fVec)); }
-    SkNf operator != (const SkNf& o) const {
-        return (float64x2_t)(vmvnq_u32(vreinterpretq_u32_u64(vceqq_f64(fVec, o.fVec))));
-    }
-
-    static SkNf Min(const SkNf& l, const SkNf& r) { return vminq_f64(l.fVec, r.fVec); }
-    static SkNf Max(const SkNf& l, const SkNf& r) { return vmaxq_f64(l.fVec, r.fVec); }
-
-    SkNf  sqrt() const { return vsqrtq_f64(fVec);  }
-
-    SkNf rsqrt0() const { return vrsqrteq_f64(fVec); }
-    SkNf rsqrt1() const {
-        float64x2_t est0 = this->rsqrt0().fVec;
-        return vmulq_f64(vrsqrtsq_f64(fVec, vmulq_f64(est0, est0)), est0);
-    }
-    SkNf rsqrt2() const {
-        float64x2_t est1 = this->rsqrt1().fVec;
-        return vmulq_f64(vrsqrtsq_f64(fVec, vmulq_f64(est1, est1)), est1);
-    }
-
-    SkNf approxInvert() const {
-        float64x2_t est0 = vrecpeq_f64(fVec),
-                    est1 = vmulq_f64(vrecpsq_f64(est0, fVec), est0);
-        return est1;
-    }
-
-    SkNf invert() const {
-        float64x2_t est1 = this->approxInvert().fVec,
-                    est2 = vmulq_f64(vrecpsq_f64(est1, fVec), est1),
-                    est3 = vmulq_f64(vrecpsq_f64(est2, fVec), est2);
-        return est3;
-    }
-
-    template <int k> double kth() const {
-        SkASSERT(0 <= k && k < 2);
-        return vgetq_lane_f64(fVec, k&1);
-    }
-
-    // vreinterpretq_u64_f64 doesn't seem to exist....  weird.
-    bool allTrue() const {
-        auto v = (uint64x2_t)(fVec);
-        return vgetq_lane_u64(v,0) && vgetq_lane_u64(v,1);
-    }
-    bool anyTrue() const {
-        auto v = (uint64x2_t)(fVec);
-        return vgetq_lane_u64(v,0) || vgetq_lane_u64(v,1);
-    }
-
-    float64x2_t fVec;
-};
-#endif//defined(SK_CPU_ARM64)
-
 template <>
 class SkNi<4, int> {
 public:
     SkNi(const int32x4_t& vec) : fVec(vec) {}
 
     SkNi() {}
     explicit SkNi(int val) : fVec(vdupq_n_s32(val)) {}
     static SkNi Load(const int vals[4]) { return vld1q_s32(vals); }
     SkNi(int a, int b, int c, int d) { fVec = (int32x4_t) { a, b, c, d }; }
 
     void store(int vals[4]) const { vst1q_s32(vals, fVec); }
 
     SkNi operator + (const SkNi& o) const { return vaddq_s32(fVec, o.fVec); }
     SkNi operator - (const SkNi& o) const { return vsubq_s32(fVec, o.fVec); }
     SkNi operator * (const SkNi& o) const { return vmulq_s32(fVec, o.fVec); }
 
     SkNi operator << (int bits) const { SHIFT32(vshlq_n_s32, fVec, bits); }
     SkNi operator >> (int bits) const { SHIFT32(vshrq_n_s32, fVec, bits); }
 
     template <int k> int kth() const {
         SkASSERT(0 <= k && k < 4);
         return vgetq_lane_s32(fVec, k&3);
     }
 
     int32x4_t fVec;
 };
 
 template <>
-class SkNf<4, float> {
+class SkNf<4> {
 public:
     SkNf(float32x4_t vec) : fVec(vec) {}
 
     SkNf() {}
     explicit SkNf(float val)           : fVec(vdupq_n_f32(val)) {}
     static SkNf Load(const float vals[4]) { return vld1q_f32(vals); }
     static SkNf FromBytes(const uint8_t vals[4]) {
         uint8x8_t   fix8    = (uint8x8_t)vld1_dup_u32((const uint32_t*)vals);
         uint16x8_t  fix8_16 = vmovl_u8(fix8);
         uint32x4_t  fix8_32 = vmovl_u16(vget_low_u16(fix8_16));
         return SkNf(vcvtq_f32_u32(fix8_32));
     }
 
     SkNf(float a, float b, float c, float d) { fVec = (float32x4_t) { a, b, c, d }; }
 
     void store(float vals[4]) const { vst1q_f32(vals, fVec); }
     void toBytes(uint8_t bytes[4]) const {
         uint32x4_t  fix8_32 = vcvtq_u32_f32(fVec);
         uint16x4_t  fix8_16 = vqmovn_u32(fix8_32);
         uint8x8_t   fix8    = vqmovn_u16(vcombine_u16(fix8_16, vdup_n_u16(0)));
         vst1_lane_u32((uint32_t*)bytes, (uint32x2_t)fix8, 0);
     }
 
-    SkNi<4, int> castTrunc() const { return vcvtq_s32_f32(fVec); }
-
     SkNf approxInvert() const {
         float32x4_t est0 = vrecpeq_f32(fVec),
                     est1 = vmulq_f32(vrecpsq_f32(est0, fVec), est0);
         return est1;
     }
     SkNf invert() const {
         float32x4_t est1 = this->approxInvert().fVec,
                     est2 = vmulq_f32(vrecpsq_f32(est1, fVec), est1);
         return est2;
     }
@@ skipping 137 matching lines @@
     uint8x16_t fVec;
 };
 
 #undef SHIFT32
 #undef SHIFT16
 #undef SHIFT8
 
 }  // namespace
 
 #endif//SkNx_neon_DEFINED