| 1 | //===- MCAsmParserExtension.cpp - Asm Parser Hooks ------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "llvm/MC/MCParser/MCAsmParserExtension.h" |
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| 10 | #include "llvm/MC/MCContext.h" |
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| 11 | #include "llvm/MC/MCExpr.h" |
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| 12 | #include "llvm/MC/MCParser/MCAsmLexer.h" |
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| 13 | #include "llvm/MC/MCStreamer.h" |
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| 14 | |
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| 15 | using namespace llvm; |
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| 16 | |
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| 17 | MCAsmParserExtension::MCAsmParserExtension() = default; |
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| 18 | |
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| 19 | MCAsmParserExtension::~MCAsmParserExtension() = default; |
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| 20 | |
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| 21 | void MCAsmParserExtension::Initialize(MCAsmParser &Parser) { |
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| 22 | this->Parser = &Parser; |
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| 23 | } |
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| 24 | |
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| 25 | /// ParseDirectiveCGProfile |
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| 26 | /// ::= .cg_profile identifier, identifier, <number> |
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| 27 | bool MCAsmParserExtension::ParseDirectiveCGProfile(StringRef, SMLoc) { |
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| 28 | StringRef From; |
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| 29 | SMLoc FromLoc = getLexer().getLoc(); |
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| 30 | if (getParser().parseIdentifier(Res&: From)) |
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| 31 | return TokError(Msg: "expected identifier in directive" ); |
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| 32 | |
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| 33 | if (getLexer().isNot(K: AsmToken::Comma)) |
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| 34 | return TokError(Msg: "expected a comma" ); |
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| 35 | Lex(); |
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| 36 | |
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| 37 | StringRef To; |
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| 38 | SMLoc ToLoc = getLexer().getLoc(); |
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| 39 | if (getParser().parseIdentifier(Res&: To)) |
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| 40 | return TokError(Msg: "expected identifier in directive" ); |
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| 41 | |
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| 42 | if (getLexer().isNot(K: AsmToken::Comma)) |
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| 43 | return TokError(Msg: "expected a comma" ); |
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| 44 | Lex(); |
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| 45 | |
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| 46 | int64_t Count; |
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| 47 | if (getParser().parseIntToken( |
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| 48 | V&: Count, ErrMsg: "expected integer count in '.cg_profile' directive" )) |
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| 49 | return true; |
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| 50 | |
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| 51 | if (getLexer().isNot(K: AsmToken::EndOfStatement)) |
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| 52 | return TokError(Msg: "unexpected token in directive" ); |
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| 53 | |
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| 54 | MCSymbol *FromSym = getContext().getOrCreateSymbol(Name: From); |
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| 55 | MCSymbol *ToSym = getContext().getOrCreateSymbol(Name: To); |
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| 56 | |
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| 57 | getStreamer().emitCGProfileEntry( |
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| 58 | From: MCSymbolRefExpr::create(Symbol: FromSym, Kind: MCSymbolRefExpr::VK_None, Ctx&: getContext(), |
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| 59 | Loc: FromLoc), |
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| 60 | To: MCSymbolRefExpr::create(Symbol: ToSym, Kind: MCSymbolRefExpr::VK_None, Ctx&: getContext(), |
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| 61 | Loc: ToLoc), |
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| 62 | Count); |
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| 63 | return false; |
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| 64 | } |
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| 65 | |
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