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67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
//===- MCAsmInfoCOFF.cpp - COFF asm properties ----------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines target asm properties related what form asm statements
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// should take in general on COFF-based targets
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/MC/MCAsmInfoCOFF.h"
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#include "llvm/MC/MCDirectives.h"
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using namespace llvm;
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void MCAsmInfoCOFF::anchor() {}
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MCAsmInfoCOFF::MCAsmInfoCOFF() {
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// MingW 4.5 and later support .comm with log2 alignment, but .lcomm uses byte
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// alignment.
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COMMDirectiveAlignmentIsInBytes = false;
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LCOMMDirectiveAlignmentType = LCOMM::ByteAlignment;
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HasDotTypeDotSizeDirective = false;
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HasSingleParameterDotFile = true;
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WeakRefDirective = "\t.weak\t";
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AvoidWeakIfComdat = true;
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// Doesn't support visibility:
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HiddenVisibilityAttr = HiddenDeclarationVisibilityAttr = MCSA_Invalid;
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ProtectedVisibilityAttr = MCSA_Invalid;
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// Set up DWARF directives
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SupportsDebugInformation = true;
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NeedsDwarfSectionOffsetDirective = true;
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// At least MSVC inline-asm does AShr.
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UseLogicalShr = false;
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// If this is a COFF target, assume that it supports associative comdats. It's
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// part of the spec.
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HasCOFFAssociativeComdats = true;
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// We can generate constants in comdat sections that can be shared,
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// but in order not to create null typed symbols, we actually need to
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// make them global symbols as well.
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HasCOFFComdatConstants = true;
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}
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void MCAsmInfoMicrosoft::anchor() {}
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MCAsmInfoMicrosoft::MCAsmInfoMicrosoft() = default;
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void MCAsmInfoGNUCOFF::anchor() {}
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MCAsmInfoGNUCOFF::MCAsmInfoGNUCOFF() {
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// If this is a GNU environment (mingw or cygwin), don't use associative
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// comdats for jump tables, unwind information, and other data associated with
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// a function.
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HasCOFFAssociativeComdats = false;
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// We don't create constants in comdat sections for MinGW.
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HasCOFFComdatConstants = false;
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}
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