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ca668acee6
Summary:
Many directives are unavailable, and support for others may be limited.
This first draft has preliminary support for:
- conditional directives (including errors),
- data allocation (unsigned types up to 8 bytes, and ALIGN),
- equates/variables (numeric and text),
- and procedure directives (without parameters),
as well as COMMENT, ECHO, INCLUDE, INCLUDELIB, PUBLIC, and EXTERN. Text variables (aka text macros) are expanded in-place wherever the identifier occurs.
We deliberately ignore all ml.exe processor directives.
Prominent features not yet supported:
- structs
- macros (both procedures and functions)
- procedures (with specified parameters)
- substitution & expansion operators
Conditional directives are complicated by the fact that "ifdef rax" is a valid way to check if a file is being assembled for a 64-bit x86 processor; we add support for "ifdef <register>" in general, which requires adding a tryParseRegister method to all MCTargetAsmParsers. (Some targets require backtracking in the non-register case.)
Reviewers: rnk, thakis
Reviewed By: thakis
Subscribers: kerbowa, merge_guards_bot, wuzish, arsenm, dschuff, jyknight, dylanmckay, sdardis, nemanjai, jvesely, mgorny, sbc100, jgravelle-google, hiraditya, aheejin, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, sabuasal, niosHD, jrtc27, MaskRay, zzheng, edward-jones, atanasyan, rogfer01, MartinMosbeck, brucehoult, the_o, PkmX, jocewei, jsji, Jim, s.egerton, pzheng, sameer.abuasal, apazos, luismarques, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D72680
28 lines
974 B
C++
28 lines
974 B
C++
//===- lib/MC/MCTargetOptions.cpp - MC Target Options ---------------------===//
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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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#include "llvm/MC/MCTargetOptions.h"
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#include "llvm/ADT/StringRef.h"
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using namespace llvm;
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MCTargetOptions::MCTargetOptions()
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: MCRelaxAll(false), MCNoExecStack(false), MCFatalWarnings(false),
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MCNoWarn(false), MCNoDeprecatedWarn(false), MCSaveTempLabels(false),
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MCUseDwarfDirectory(false), MCIncrementalLinkerCompatible(false),
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ShowMCEncoding(false), ShowMCInst(false), AsmVerbose(false),
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PreserveAsmComments(true) {}
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StringRef MCTargetOptions::getABIName() const {
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return ABIName;
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}
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StringRef MCTargetOptions::getAssemblyLanguage() const {
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return AssemblyLanguage;
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}
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