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| //===- MCAsmInfoCOFF.cpp - COFF asm properties ----------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file defines target asm properties related what form asm statements
// should take in general on COFF-based targets
//
//===----------------------------------------------------------------------===//
#include "llvm/MC/MCAsmInfoCOFF.h"
#include "llvm/MC/MCDirectives.h"
using namespace llvm;
void MCAsmInfoCOFF::anchor() {}
MCAsmInfoCOFF::MCAsmInfoCOFF() {
// MingW 4.5 and later support .comm with log2 alignment, but .lcomm uses byte
// alignment.
COMMDirectiveAlignmentIsInBytes = false;
LCOMMDirectiveAlignmentType = LCOMM::ByteAlignment;
HasDotTypeDotSizeDirective = false;
HasSingleParameterDotFile = true;
WeakRefDirective = "\t.weak\t";
HasLinkOnceDirective = true;
// Doesn't support visibility:
HiddenVisibilityAttr = HiddenDeclarationVisibilityAttr = MCSA_Invalid;
ProtectedVisibilityAttr = MCSA_Invalid;
// Set up DWARF directives
SupportsDebugInformation = true;
NeedsDwarfSectionOffsetDirective = true;
UseIntegratedAssembler = true;
// At least MSVC inline-asm does AShr.
UseLogicalShr = false;
// If this is a COFF target, assume that it supports associative comdats. It's
// part of the spec.
HasCOFFAssociativeComdats = true;
// We can generate constants in comdat sections that can be shared,
// but in order not to create null typed symbols, we actually need to
// make them global symbols as well.
HasCOFFComdatConstants = true;
}
void MCAsmInfoMicrosoft::anchor() {}
MCAsmInfoMicrosoft::MCAsmInfoMicrosoft() = default;
void MCAsmInfoGNUCOFF::anchor() {}
MCAsmInfoGNUCOFF::MCAsmInfoGNUCOFF() {
// If this is a GNU environment (mingw or cygwin), don't use associative
// comdats for jump tables, unwind information, and other data associated with
// a function.
HasCOFFAssociativeComdats = false;
// We don't create constants in comdat sections for MinGW.
HasCOFFComdatConstants = false;
}
|