| //===- 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"; |
| AvoidWeakIfComdat = true; |
| |
| // Doesn't support visibility: |
| HiddenVisibilityAttr = HiddenDeclarationVisibilityAttr = MCSA_Invalid; |
| ProtectedVisibilityAttr = MCSA_Invalid; |
| |
| // Set up DWARF directives |
| SupportsDebugInformation = true; |
| NeedsDwarfSectionOffsetDirective = 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; |
| } |