You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
94 lines
3.3 KiB
94 lines
3.3 KiB
// Copyright 2019, VIXL authors
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
// * Neither the name of ARM Limited nor the names of its contributors may be
|
|
// used to endorse or promote products derived from this software without
|
|
// specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
|
|
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
|
|
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
#include "globals-vixl.h"
|
|
|
|
#include "aarch64/instructions-aarch64.h"
|
|
#include "aarch64/macro-assembler-aarch64.h"
|
|
|
|
#include "bench-utils.h"
|
|
|
|
using namespace vixl;
|
|
using namespace vixl::aarch64;
|
|
|
|
// Like PrintDisassembler, but to prevent the I/O overhead from dominating the
|
|
// benchmark, don't actually print anything.
|
|
class BenchDisassembler : public Disassembler {
|
|
public:
|
|
BenchDisassembler() : Disassembler(), generated_chars_(0) {}
|
|
|
|
size_t GetGeneratedCharCount() const { return generated_chars_; }
|
|
|
|
protected:
|
|
virtual void ProcessOutput(const Instruction* instr) VIXL_OVERRIDE {
|
|
USE(instr);
|
|
generated_chars_ += strlen(GetOutput());
|
|
}
|
|
|
|
size_t generated_chars_;
|
|
};
|
|
|
|
// This program measures the performance of the disassembler, using the same
|
|
// code sequence used in bench-mixed-masm.cc.
|
|
int main(int argc, char* argv[]) {
|
|
BenchCLI cli(argc, argv);
|
|
if (cli.ShouldExitEarly()) return cli.GetExitCode();
|
|
|
|
const size_t buffer_size = 256 * KBytes;
|
|
MacroAssembler masm(buffer_size);
|
|
masm.SetCPUFeatures(CPUFeatures::All());
|
|
BenchCodeGenerator generator(&masm);
|
|
|
|
masm.Reset();
|
|
generator.Generate(buffer_size);
|
|
masm.FinalizeCode();
|
|
|
|
const Instruction* start =
|
|
masm.GetBuffer()->GetStartAddress<const Instruction*>();
|
|
const Instruction* end =
|
|
masm.GetBuffer()->GetEndAddress<const Instruction*>();
|
|
|
|
Decoder decoder;
|
|
BenchDisassembler disasm;
|
|
decoder.AppendVisitor(&disasm);
|
|
|
|
BenchTimer timer;
|
|
|
|
size_t iterations = 0;
|
|
size_t generated_chars = 0;
|
|
do {
|
|
decoder.Decode(start, end);
|
|
generated_chars += disasm.GetGeneratedCharCount();
|
|
|
|
iterations++;
|
|
} while (!timer.HasRunFor(cli.GetRunTimeInSeconds()));
|
|
|
|
printf("Disassembled %" PRIu64 " characters.\n",
|
|
static_cast<uint64_t>(generated_chars));
|
|
cli.PrintResults(iterations, timer.GetElapsedSeconds());
|
|
return cli.GetExitCode();
|
|
}
|