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add bench for SkCLZ

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git-svn-id: http://skia.googlecode.com/svn/trunk@8894 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
reed@google.com 2013-04-29 13:55:11 +00:00
parent 553ad65f78
commit 0d7aac9ce7
1 changed files with 66 additions and 4 deletions
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70
bench/MathBench.cpp
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@ -59,15 +59,15 @@ private:
class MathBenchU32 : public MathBench {
public:
MathBenchU32(void* param, const char name[]) : INHERITED(param, name) {}
protected:
virtual void performITest(uint32_t* SK_RESTRICT dst,
const uint32_t* SK_RESTRICT src,
int count) = 0;
virtual void performTest(float* SK_RESTRICT dst,
const float* SK_RESTRICT src,
int count) SK_OVERRIDE {
const float* SK_RESTRICT src,
int count) SK_OVERRIDE {
uint32_t* d = SkTCast<uint32_t*>(dst);
const uint32_t* s = SkTCast<const uint32_t*>(src);
this->performITest(d, s, count);
@ -371,6 +371,66 @@ private:
typedef SkBenchmark INHERITED;
};
class CLZBench : public SkBenchmark {
enum {
ARRAY = SkBENCHLOOP(1000),
LOOP = SkBENCHLOOP(1000),
};
uint32_t fData[ARRAY];
bool fUsePortable;
public:
CLZBench(void* param, bool usePortable)
: INHERITED(param)
, fUsePortable(usePortable) {
SkRandom rand;
for (int i = 0; i < ARRAY; ++i) {
fData[i] = rand.nextU();
}
if (fUsePortable) {
fName = "clz_portable";
} else {
fName = "clz_intrinsic";
}
fIsRendering = false;
}
// just so the compiler doesn't remove our loops
virtual void process(int) {}
protected:
virtual void onDraw(SkCanvas*) {
int accum = 0;
if (fUsePortable) {
for (int j = 0; j < LOOP; ++j) {
for (int i = 0; i < ARRAY; ++i) {
accum += SkCLZ_portable(fData[i]);
}
this->process(accum);
}
} else {
for (int j = 0; j < LOOP; ++j) {
for (int i = 0; i < ARRAY; ++i) {
accum += SkCLZ(fData[i]);
}
this->process(accum);
}
}
}
virtual const char* onGetName() {
return fName;
}
private:
const char* fName;
typedef SkBenchmark INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
DEF_BENCH( return new NoOpMathBench(p); )
@ -390,3 +450,5 @@ DEF_BENCH( return new IsFiniteBench(p, 5); )
DEF_BENCH( return new FloorBench(p, false); )
DEF_BENCH( return new FloorBench(p, true); )
DEF_BENCH( return new CLZBench(p, false); )
DEF_BENCH( return new CLZBench(p, true); )