728 lines
18 KiB
C++
728 lines
18 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "bench/Benchmark.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkString.h"
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#include "include/private/SkColorData.h"
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#include "include/private/SkFixed.h"
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#include "include/utils/SkRandom.h"
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#include "src/core/SkMathPriv.h"
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static float sk_fsel(float pred, float result_ge, float result_lt) {
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return pred >= 0 ? result_ge : result_lt;
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}
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static float fast_floor(float x) {
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// float big = sk_fsel(x, 0x1.0p+23, -0x1.0p+23);
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float big = sk_fsel(x, (float)(1 << 23), -(float)(1 << 23));
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return (x + big) - big;
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}
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class MathBench : public Benchmark {
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enum {
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kBuffer = 100,
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};
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SkString fName;
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float fSrc[kBuffer], fDst[kBuffer];
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public:
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MathBench(const char name[]) {
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fName.printf("math_%s", name);
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SkRandom rand;
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for (int i = 0; i < kBuffer; ++i) {
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fSrc[i] = rand.nextSScalar1();
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}
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}
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bool isSuitableFor(Backend backend) override {
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return backend == kNonRendering_Backend;
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}
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virtual void performTest(float* SK_RESTRICT dst,
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const float* SK_RESTRICT src,
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int count) = 0;
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protected:
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virtual int mulLoopCount() const { return 1; }
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const char* onGetName() override {
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return fName.c_str();
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}
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void onDraw(int loops, SkCanvas*) override {
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int n = loops * this->mulLoopCount();
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for (int i = 0; i < n; i++) {
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this->performTest(fDst, fSrc, kBuffer);
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}
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}
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private:
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using INHERITED = Benchmark;
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};
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class MathBenchU32 : public MathBench {
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public:
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MathBenchU32(const char name[]) : INHERITED(name) {}
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protected:
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virtual void performITest(uint32_t* SK_RESTRICT dst,
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const uint32_t* SK_RESTRICT src,
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int count) = 0;
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void performTest(float* SK_RESTRICT dst, const float* SK_RESTRICT src, int count) override {
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uint32_t* d = reinterpret_cast<uint32_t*>(dst);
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const uint32_t* s = reinterpret_cast<const uint32_t*>(src);
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this->performITest(d, s, count);
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}
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private:
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using INHERITED = MathBench;
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};
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///////////////////////////////////////////////////////////////////////////////
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class NoOpMathBench : public MathBench {
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public:
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NoOpMathBench() : INHERITED("noOp") {}
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protected:
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void performTest(float* SK_RESTRICT dst, const float* SK_RESTRICT src, int count) override {
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for (int i = 0; i < count; ++i) {
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dst[i] = src[i] + 1;
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}
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}
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private:
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using INHERITED = MathBench;
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};
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class SkRSqrtMathBench : public MathBench {
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public:
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SkRSqrtMathBench() : INHERITED("sk_float_rsqrt") {}
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protected:
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void performTest(float* SK_RESTRICT dst, const float* SK_RESTRICT src, int count) override {
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for (int i = 0; i < count; ++i) {
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dst[i] = sk_float_rsqrt(src[i]);
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}
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}
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private:
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using INHERITED = MathBench;
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};
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class SlowISqrtMathBench : public MathBench {
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public:
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SlowISqrtMathBench() : INHERITED("slowIsqrt") {}
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protected:
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void performTest(float* SK_RESTRICT dst, const float* SK_RESTRICT src, int count) override {
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for (int i = 0; i < count; ++i) {
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dst[i] = 1.0f / sk_float_sqrt(src[i]);
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}
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}
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private:
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using INHERITED = MathBench;
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};
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class FastISqrtMathBench : public MathBench {
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public:
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FastISqrtMathBench() : INHERITED("fastIsqrt") {}
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protected:
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void performTest(float* SK_RESTRICT dst, const float* SK_RESTRICT src, int count) override {
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for (int i = 0; i < count; ++i) {
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dst[i] = sk_float_rsqrt(src[i]);
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}
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}
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private:
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using INHERITED = MathBench;
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};
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static inline uint32_t QMul64(uint32_t value, U8CPU alpha) {
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SkASSERT((uint8_t)alpha == alpha);
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const uint32_t mask = 0xFF00FF;
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uint64_t tmp = value;
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tmp = (tmp & mask) | ((tmp & ~mask) << 24);
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tmp *= alpha;
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return (uint32_t) (((tmp >> 8) & mask) | ((tmp >> 32) & ~mask));
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}
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class QMul64Bench : public MathBenchU32 {
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public:
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QMul64Bench() : INHERITED("qmul64") {}
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protected:
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void performITest(uint32_t* SK_RESTRICT dst,
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const uint32_t* SK_RESTRICT src,
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int count) override {
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for (int i = 0; i < count; ++i) {
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dst[i] = QMul64(src[i], (uint8_t)i);
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}
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}
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private:
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using INHERITED = MathBenchU32;
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};
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class QMul32Bench : public MathBenchU32 {
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public:
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QMul32Bench() : INHERITED("qmul32") {}
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protected:
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void performITest(uint32_t* SK_RESTRICT dst,
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const uint32_t* SK_RESTRICT src,
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int count) override {
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for (int i = 0; i < count; ++i) {
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dst[i] = SkAlphaMulQ(src[i], (uint8_t)i);
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}
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}
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private:
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using INHERITED = MathBenchU32;
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};
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///////////////////////////////////////////////////////////////////////////////
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static bool isFinite_int(float x) {
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uint32_t bits = SkFloat2Bits(x); // need unsigned for our shifts
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int exponent = bits << 1 >> 24;
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return exponent != 0xFF;
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}
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static bool isFinite_float(float x) {
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return SkToBool(sk_float_isfinite(x));
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}
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static bool isFinite_mulzero(float x) {
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float y = x * 0;
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return y == y;
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}
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static bool isfinite_and_int(const float data[4]) {
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return isFinite_int(data[0]) && isFinite_int(data[1]) && isFinite_int(data[2]) && isFinite_int(data[3]);
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}
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static bool isfinite_and_float(const float data[4]) {
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return isFinite_float(data[0]) && isFinite_float(data[1]) && isFinite_float(data[2]) && isFinite_float(data[3]);
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}
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static bool isfinite_and_mulzero(const float data[4]) {
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return isFinite_mulzero(data[0]) && isFinite_mulzero(data[1]) && isFinite_mulzero(data[2]) && isFinite_mulzero(data[3]);
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}
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#define mulzeroadd(data) (data[0]*0 + data[1]*0 + data[2]*0 + data[3]*0)
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static bool isfinite_plus_int(const float data[4]) {
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return isFinite_int(mulzeroadd(data));
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}
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static bool isfinite_plus_float(const float data[4]) {
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return !sk_float_isnan(mulzeroadd(data));
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}
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static bool isfinite_plus_mulzero(const float data[4]) {
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float x = mulzeroadd(data);
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return x == x;
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}
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typedef bool (*IsFiniteProc)(const float[]);
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#define MAKEREC(name) { name, #name }
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static const struct {
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IsFiniteProc fProc;
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const char* fName;
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} gRec[] = {
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MAKEREC(isfinite_and_int),
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MAKEREC(isfinite_and_float),
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MAKEREC(isfinite_and_mulzero),
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MAKEREC(isfinite_plus_int),
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MAKEREC(isfinite_plus_float),
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MAKEREC(isfinite_plus_mulzero),
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};
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#undef MAKEREC
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static bool isFinite(const SkRect& r) {
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// x * 0 will be NaN iff x is infinity or NaN.
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// a + b will be NaN iff either a or b is NaN.
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float value = r.fLeft * 0 + r.fTop * 0 + r.fRight * 0 + r.fBottom * 0;
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// value is either NaN or it is finite (zero).
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// value==value will be true iff value is not NaN
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return value == value;
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}
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class IsFiniteBench : public Benchmark {
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enum {
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N = 1000,
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};
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float fData[N];
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public:
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IsFiniteBench(int index) {
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SkRandom rand;
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for (int i = 0; i < N; ++i) {
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fData[i] = rand.nextSScalar1();
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}
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if (index < 0) {
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fProc = nullptr;
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fName = "isfinite_rect";
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} else {
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fProc = gRec[index].fProc;
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fName = gRec[index].fName;
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}
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}
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bool isSuitableFor(Backend backend) override {
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return backend == kNonRendering_Backend;
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}
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protected:
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void onDraw(int loops, SkCanvas*) override {
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IsFiniteProc proc = fProc;
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const float* data = fData;
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// do this so the compiler won't throw away the function call
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int counter = 0;
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if (proc) {
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for (int j = 0; j < loops; ++j) {
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for (int i = 0; i < N - 4; ++i) {
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counter += proc(&data[i]);
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}
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}
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} else {
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for (int j = 0; j < loops; ++j) {
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for (int i = 0; i < N - 4; ++i) {
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const SkRect* r = reinterpret_cast<const SkRect*>(&data[i]);
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if (false) { // avoid bit rot, suppress warning
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isFinite(*r);
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}
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counter += r->isFinite();
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}
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}
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}
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SkPaint paint;
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if (paint.getAlpha() == 0) {
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SkDebugf("%d\n", counter);
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}
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}
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const char* onGetName() override {
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return fName;
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}
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private:
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IsFiniteProc fProc;
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const char* fName;
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using INHERITED = Benchmark;
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};
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class FloorBench : public Benchmark {
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enum {
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ARRAY = 1000,
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};
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float fData[ARRAY];
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bool fFast;
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public:
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FloorBench(bool fast) : fFast(fast) {
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SkRandom rand;
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for (int i = 0; i < ARRAY; ++i) {
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fData[i] = rand.nextSScalar1();
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}
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if (fast) {
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fName = "floor_fast";
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} else {
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fName = "floor_std";
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}
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}
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bool isSuitableFor(Backend backend) override {
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return backend == kNonRendering_Backend;
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}
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virtual void process(float) {}
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protected:
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void onDraw(int loops, SkCanvas*) override {
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SkRandom rand;
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float accum = 0;
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const float* data = fData;
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if (fFast) {
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for (int j = 0; j < loops; ++j) {
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for (int i = 0; i < ARRAY; ++i) {
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accum += fast_floor(data[i]);
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}
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this->process(accum);
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}
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} else {
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for (int j = 0; j < loops; ++j) {
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for (int i = 0; i < ARRAY; ++i) {
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accum += sk_float_floor(data[i]);
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}
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this->process(accum);
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}
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}
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}
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const char* onGetName() override {
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return fName;
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}
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private:
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const char* fName;
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using INHERITED = Benchmark;
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};
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class CLZBench : public Benchmark {
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enum {
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ARRAY = 1000,
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};
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uint32_t fData[ARRAY];
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bool fUsePortable;
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public:
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CLZBench(bool usePortable) : fUsePortable(usePortable) {
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SkRandom rand;
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for (int i = 0; i < ARRAY; ++i) {
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fData[i] = rand.nextU();
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}
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if (fUsePortable) {
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fName = "clz_portable";
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} else {
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fName = "clz_intrinsic";
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}
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}
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bool isSuitableFor(Backend backend) override {
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return backend == kNonRendering_Backend;
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}
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// just so the compiler doesn't remove our loops
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virtual void process(int) {}
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protected:
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void onDraw(int loops, SkCanvas*) override {
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int accum = 0;
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if (fUsePortable) {
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for (int j = 0; j < loops; ++j) {
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for (int i = 0; i < ARRAY; ++i) {
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accum += SkCLZ_portable(fData[i]);
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}
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this->process(accum);
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}
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} else {
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for (int j = 0; j < loops; ++j) {
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for (int i = 0; i < ARRAY; ++i) {
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accum += SkCLZ(fData[i]);
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}
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this->process(accum);
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}
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}
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}
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const char* onGetName() override {
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return fName;
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}
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private:
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const char* fName;
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using INHERITED = Benchmark;
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};
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class CTZBench : public Benchmark {
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enum {
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ARRAY = 1000,
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};
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uint32_t fData[ARRAY];
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bool fUsePortable;
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public:
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CTZBench(bool usePortable) : fUsePortable(usePortable) {
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SkRandom rand;
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for (int i = 0; i < ARRAY; ++i) {
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fData[i] = rand.nextU();
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}
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if (fUsePortable) {
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fName = "ctz_portable";
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} else {
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fName = "ctz_intrinsic";
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}
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}
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bool isSuitableFor(Backend backend) override {
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return backend == kNonRendering_Backend;
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}
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// just so the compiler doesn't remove our loops
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virtual void process(int) {}
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protected:
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void onDraw(int loops, SkCanvas*) override {
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int accum = 0;
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if (fUsePortable) {
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for (int j = 0; j < loops; ++j) {
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for (int i = 0; i < ARRAY; ++i) {
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accum += SkCTZ_portable(fData[i]);
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}
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this->process(accum);
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}
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} else {
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for (int j = 0; j < loops; ++j) {
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for (int i = 0; i < ARRAY; ++i) {
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accum += SkCTZ(fData[i]);
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}
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this->process(accum);
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}
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}
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}
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const char* onGetName() override {
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return fName;
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}
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private:
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const char* fName;
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using INHERITED = Benchmark;
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};
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///////////////////////////////////////////////////////////////////////////////
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class NormalizeBench : public Benchmark {
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enum {
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ARRAY =1000,
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};
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SkVector fVec[ARRAY];
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public:
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NormalizeBench() {
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SkRandom rand;
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for (int i = 0; i < ARRAY; ++i) {
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fVec[i].set(rand.nextSScalar1(), rand.nextSScalar1());
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}
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fName = "point_normalize";
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}
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bool isSuitableFor(Backend backend) override {
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return backend == kNonRendering_Backend;
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}
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// just so the compiler doesn't remove our loops
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virtual void process(int) {}
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protected:
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void onDraw(int loops, SkCanvas*) override {
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int accum = 0;
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for (int j = 0; j < loops; ++j) {
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for (int i = 0; i < ARRAY; ++i) {
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accum += fVec[i].normalize();
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}
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this->process(accum);
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}
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}
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const char* onGetName() override {
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return fName;
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}
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private:
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const char* fName;
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using INHERITED = Benchmark;
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};
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///////////////////////////////////////////////////////////////////////////////
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class FixedMathBench : public Benchmark {
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enum {
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N = 1000,
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};
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float fData[N];
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SkFixed fResult[N];
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public:
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FixedMathBench() {
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SkRandom rand;
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for (int i = 0; i < N; ++i) {
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fData[i] = rand.nextSScalar1();
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}
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}
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bool isSuitableFor(Backend backend) override {
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return backend == kNonRendering_Backend;
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}
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protected:
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void onDraw(int loops, SkCanvas*) override {
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for (int j = 0; j < loops; ++j) {
|
|
for (int i = 0; i < N - 4; ++i) {
|
|
fResult[i] = SkFloatToFixed(fData[i]);
|
|
}
|
|
}
|
|
|
|
SkPaint paint;
|
|
if (paint.getAlpha() == 0) {
|
|
SkDebugf("%d\n", fResult[0]);
|
|
}
|
|
}
|
|
|
|
const char* onGetName() override {
|
|
return "float_to_fixed";
|
|
}
|
|
|
|
private:
|
|
using INHERITED = Benchmark;
|
|
};
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
template <typename T>
|
|
class DivModBench : public Benchmark {
|
|
SkString fName;
|
|
public:
|
|
explicit DivModBench(const char* name) {
|
|
fName.printf("divmod_%s", name);
|
|
}
|
|
|
|
bool isSuitableFor(Backend backend) override {
|
|
return backend == kNonRendering_Backend;
|
|
}
|
|
|
|
protected:
|
|
const char* onGetName() override {
|
|
return fName.c_str();
|
|
}
|
|
|
|
void onDraw(int loops, SkCanvas*) override {
|
|
volatile T a = 0, b = 0;
|
|
T div = 0, mod = 0;
|
|
for (int i = 0; i < loops; i++) {
|
|
if ((T)i == 0) continue; // Small T will wrap around.
|
|
SkTDivMod((T)(i+1), (T)i, &div, &mod);
|
|
a ^= div;
|
|
b ^= mod;
|
|
}
|
|
}
|
|
};
|
|
DEF_BENCH(return new DivModBench<uint8_t>("uint8_t"))
|
|
DEF_BENCH(return new DivModBench<uint16_t>("uint16_t"))
|
|
DEF_BENCH(return new DivModBench<uint32_t>("uint32_t"))
|
|
DEF_BENCH(return new DivModBench<uint64_t>("uint64_t"))
|
|
|
|
DEF_BENCH(return new DivModBench<int8_t>("int8_t"))
|
|
DEF_BENCH(return new DivModBench<int16_t>("int16_t"))
|
|
DEF_BENCH(return new DivModBench<int32_t>("int32_t"))
|
|
DEF_BENCH(return new DivModBench<int64_t>("int64_t"))
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
DEF_BENCH( return new NoOpMathBench(); )
|
|
DEF_BENCH( return new SkRSqrtMathBench(); )
|
|
DEF_BENCH( return new SlowISqrtMathBench(); )
|
|
DEF_BENCH( return new FastISqrtMathBench(); )
|
|
DEF_BENCH( return new QMul64Bench(); )
|
|
DEF_BENCH( return new QMul32Bench(); )
|
|
|
|
DEF_BENCH( return new IsFiniteBench(-1); )
|
|
DEF_BENCH( return new IsFiniteBench(0); )
|
|
DEF_BENCH( return new IsFiniteBench(1); )
|
|
DEF_BENCH( return new IsFiniteBench(2); )
|
|
DEF_BENCH( return new IsFiniteBench(3); )
|
|
DEF_BENCH( return new IsFiniteBench(4); )
|
|
DEF_BENCH( return new IsFiniteBench(5); )
|
|
|
|
DEF_BENCH( return new FloorBench(false); )
|
|
DEF_BENCH( return new FloorBench(true); )
|
|
|
|
DEF_BENCH( return new CLZBench(false); )
|
|
DEF_BENCH( return new CLZBench(true); )
|
|
DEF_BENCH( return new CTZBench(false); )
|
|
DEF_BENCH( return new CTZBench(true); )
|
|
|
|
DEF_BENCH( return new NormalizeBench(); )
|
|
|
|
DEF_BENCH( return new FixedMathBench(); )
|
|
|
|
//////////////////////////////////////////////////////////////
|
|
|
|
#include "include/private/SkFloatBits.h"
|
|
class Floor2IntBench : public Benchmark {
|
|
enum {
|
|
ARRAY = 1000,
|
|
};
|
|
float fData[ARRAY];
|
|
const bool fSat;
|
|
public:
|
|
|
|
Floor2IntBench(bool sat) : fSat(sat) {
|
|
SkRandom rand;
|
|
|
|
for (int i = 0; i < ARRAY; ++i) {
|
|
fData[i] = SkBits2Float(rand.nextU());
|
|
}
|
|
|
|
if (sat) {
|
|
fName = "floor2int_sat";
|
|
} else {
|
|
fName = "floor2int_undef";
|
|
}
|
|
}
|
|
|
|
bool isSuitableFor(Backend backend) override {
|
|
return backend == kNonRendering_Backend;
|
|
}
|
|
|
|
// These exist to try to stop the compiler from detecting what we doing, and throwing
|
|
// parts away (or knowing exactly how big the loop counts are).
|
|
virtual void process(unsigned) {}
|
|
virtual int count() { return ARRAY; }
|
|
|
|
protected:
|
|
void onDraw(int loops, SkCanvas*) override {
|
|
// used unsigned to avoid undefined behavior if/when the += might overflow
|
|
unsigned accum = 0;
|
|
|
|
for (int j = 0; j < loops; ++j) {
|
|
int n = this->count();
|
|
if (fSat) {
|
|
for (int i = 0; i < n; ++i) {
|
|
accum += sk_float_floor2int(fData[i]);
|
|
}
|
|
} else {
|
|
for (int i = 0; i < n; ++i) {
|
|
accum += sk_float_floor2int_no_saturate(fData[i]);
|
|
}
|
|
}
|
|
this->process(accum);
|
|
}
|
|
}
|
|
|
|
const char* onGetName() override { return fName; }
|
|
|
|
private:
|
|
const char* fName;
|
|
|
|
using INHERITED = Benchmark;
|
|
};
|
|
DEF_BENCH( return new Floor2IntBench(false); )
|
|
DEF_BENCH( return new Floor2IntBench(true); )
|
|
|