f7a32b85b5
A more fleshed out version of a previous PR https://github.com/llvm/llvm-project/pull/107415. The goal is to provide platforms an alternative to the current MCAsmStreamer which only supports the GNU Asm syntax. RFC: https://discourse.llvm.org/t/rfc-llvm-add-support-for-target-specific-asm-streamer/85095 --------- Co-authored-by: Tony Tao <tonytao@ca.ibm.com>
45 lines
1.8 KiB
C++
45 lines
1.8 KiB
C++
//==-- SystemZTargetStreamer.cpp - SystemZ Target Streamer Methods ----------=//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// \file
|
|
/// This file defines SystemZ-specific target streamer classes.
|
|
/// These are for implementing support for target-specific assembly directives.
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "SystemZTargetStreamer.h"
|
|
|
|
using namespace llvm;
|
|
|
|
void SystemZTargetHLASMStreamer::emitExtern(StringRef Sym) {
|
|
getStreamer().emitRawText(Twine(" EXTRN ") + Twine(Sym));
|
|
}
|
|
|
|
// HLASM statements can only perform a single operation at a time
|
|
const MCExpr *SystemZTargetHLASMStreamer::createWordDiffExpr(
|
|
MCContext &Ctx, const MCSymbol *Hi, const MCSymbol *Lo) {
|
|
assert(Hi && Lo && "Symbols required to calculate expression");
|
|
MCSymbol *Temp = Ctx.createTempSymbol();
|
|
OS << Temp->getName() << " EQU ";
|
|
const MCBinaryExpr *TempExpr = MCBinaryExpr::createSub(
|
|
MCSymbolRefExpr::create(Hi, Ctx), MCSymbolRefExpr::create(Lo, Ctx), Ctx);
|
|
TempExpr->print(OS, Ctx.getAsmInfo());
|
|
OS << "\n";
|
|
return MCBinaryExpr::createLShr(MCSymbolRefExpr::create(Temp, Ctx),
|
|
MCConstantExpr::create(1, Ctx), Ctx);
|
|
}
|
|
|
|
const MCExpr *SystemZTargetGOFFStreamer::createWordDiffExpr(
|
|
MCContext &Ctx, const MCSymbol *Hi, const MCSymbol *Lo) {
|
|
assert(Hi && Lo && "Symbols required to calculate expression");
|
|
return MCBinaryExpr::createLShr(
|
|
MCBinaryExpr::createSub(MCSymbolRefExpr::create(Hi, Ctx),
|
|
MCSymbolRefExpr::create(Lo, Ctx), Ctx),
|
|
MCConstantExpr::create(1, Ctx), Ctx);
|
|
}
|