0c049ea60a
All users of MCCodeEmitter::encodeInstruction use a raw_svector_ostream to encode the instruction into a SmallVector. The raw_ostream however incurs some overhead for the actual encoding. This change allows an MCCodeEmitter to directly emit an instruction into a SmallVector without using a raw_ostream and therefore allow for performance improvments in encoding. A default path that uses existing raw_ostream implementations is provided. Reviewed By: MaskRay, Amir Differential Revision: https://reviews.llvm.org/D145791
25 lines
899 B
C++
25 lines
899 B
C++
//===- MCCodeEmitter.cpp - Instruction Encoding ---------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/MC/MCCodeEmitter.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
|
|
using namespace llvm;
|
|
|
|
MCCodeEmitter::MCCodeEmitter() = default;
|
|
|
|
MCCodeEmitter::~MCCodeEmitter() = default;
|
|
|
|
void MCCodeEmitter::encodeInstruction(const MCInst &Inst,
|
|
SmallVectorImpl<char> &CB,
|
|
SmallVectorImpl<MCFixup> &Fixups,
|
|
const MCSubtargetInfo &STI) const {
|
|
raw_svector_ostream OS(CB);
|
|
encodeInstruction(Inst, OS, Fixups, STI);
|
|
}
|