b5f95cd1f8
- Add quick-building skvmtool
- Remove SkString dependency
- Add aarch64 support for perf dumps
Here's what I see on now for the tiny skvmtool program:
x86-64 (Xeon Gold 6154)
│ skvm-jit-1707131987():
24.93 │ 0: vmovups (%rsi),%ymm0
50.13 │ vpmulld %ymm0,%ymm0,%ymm0
24.93 │ vmovups %ymm0,(%rsi)
│ add $0x20,%rsi
│ sub $0x8,%rdi
│ ↑ jne 0
│ vzeroupper
│ ← retq
aarch64 (Cortex A53)
│ skvm-jit-485593645():
11.55 │ 0: ldr q0, [x1]
47.65 │ mul v0.4s, v0.4s, v0.4s
31.77 │ str q0, [x1]
│ add x1, x1, #0x10
8.66 │ subs x0, x0, #0x4
│ ↑ b.ne 0
0.36 │ ← ret
Change-Id: Ia83ebdc6d96c8bd367bce0e8f2792b5e5c79f750
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/225186
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
71 lines
1.5 KiB
C++
71 lines
1.5 KiB
C++
/*
|
|
* Copyright 2019 Google LLC
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#include "src/core/SkCpu.h"
|
|
#include "src/core/SkVM.h"
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
void sk_abort_no_print() {
|
|
abort();
|
|
}
|
|
|
|
void SkDebugf(const char* fmt, ...) {
|
|
va_list args;
|
|
va_start(args, fmt);
|
|
vfprintf(stderr, fmt, args);
|
|
va_end(args);
|
|
}
|
|
|
|
// TODO: remove SkVM dependency on SkWStream
|
|
bool SkWStream::writeDecAsText (int x) { SkDebugf("%d", x); return true; }
|
|
bool SkWStream::writeHexAsText (unsigned x, int) { SkDebugf("%x", x); return true; }
|
|
bool SkWStream::writeScalarAsText(float x) { SkDebugf("%g", x); return true; }
|
|
|
|
using namespace skvm;
|
|
|
|
static Program build() {
|
|
Builder b;
|
|
|
|
Arg ptr = b.arg(0);
|
|
I32 v = b.load32(ptr);
|
|
b.store32(ptr, b.mul(v,v));
|
|
|
|
return b.done();
|
|
}
|
|
|
|
int main(int argc, char** argv) {
|
|
#if defined(__x86_64__)
|
|
SkCpu::CacheRuntimeFeatures();
|
|
#endif
|
|
int loops = argc > 1 ? atoi(argv[1])
|
|
: 1;
|
|
|
|
if (loops < 0) {
|
|
// Benchmark program build and JIT.
|
|
loops = -loops;
|
|
while (loops --> 0) {
|
|
Program program = build();
|
|
int x = 4;
|
|
program.eval(0, &x);
|
|
}
|
|
} else {
|
|
// Benchmark JIT code.
|
|
Program program = build();
|
|
|
|
int buf[4096];
|
|
for (int i = 0; i < 4096; i++) {
|
|
buf[i] = 1;
|
|
}
|
|
|
|
while (loops --> 0) {
|
|
program.eval(4096, buf);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|