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Differential D145308 Diff 507884 lld/wasm/InputFiles.cpp

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lld/wasm/InputFiles.cpp

//===- InputFiles.cpp -----------------------------------------------------===//		//===- InputFiles.cpp -----------------------------------------------------===//
//		//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.		// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.		// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception		// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//		//
//===----------------------------------------------------------------------===//		//===----------------------------------------------------------------------===//

#include "InputFiles.h"		#include "InputFiles.h"
#include "Config.h"		#include "Config.h"
#include "InputChunks.h"		#include "InputChunks.h"
#include "InputElement.h"		#include "InputElement.h"
#include "OutputSegment.h"		#include "OutputSegment.h"
#include "SymbolTable.h"		#include "SymbolTable.h"
		#include "lld/Common/Args.h"
#include "lld/Common/CommonLinkerContext.h"		#include "lld/Common/CommonLinkerContext.h"
#include "lld/Common/Reproduce.h"		#include "lld/Common/Reproduce.h"
#include "llvm/Object/Binary.h"		#include "llvm/Object/Binary.h"
#include "llvm/Object/Wasm.h"		#include "llvm/Object/Wasm.h"
#include "llvm/Support/Path.h"		#include "llvm/Support/Path.h"
#include "llvm/Support/TarWriter.h"		#include "llvm/Support/TarWriter.h"
#include "llvm/Support/raw_ostream.h"		#include "llvm/Support/raw_ostream.h"
#include <optional>		#include <optional>
▲ Show 20 Lines • Show All 650 Lines • ▼ Show 20 Lines	return symtab->addUndefinedTag(name, sym.Info.ImportName,
sym.Info.ImportModule, flags, this,		sym.Info.ImportModule, flags, this,
sym.Signature);		sym.Signature);
case WASM_SYMBOL_TYPE_SECTION:		case WASM_SYMBOL_TYPE_SECTION:
llvm_unreachable("section symbols cannot be undefined");		llvm_unreachable("section symbols cannot be undefined");
}		}
llvm_unreachable("unknown symbol kind");		llvm_unreachable("unknown symbol kind");
}		}


		StringRef strip(StringRef s) {
		while (s.starts_with(" ")) {
		dschuffUnsubmitted Not Done Reply Inline Actions is there a more generic isspace-type function that would be better here? dschuff: is there a more generic isspace-type function that would be better here?
		s = s.drop_front();
		}
		while (s.ends_with(" ")) {
		s = s.drop_back();
		}
		return s;
		}

		void StubFile::parse() {
		bool first = false;

		for (StringRef line : args::getLines(mb)) {
		// File must begin with #STUB
		if (first) {
		assert(line == "#STUB\n");
		first = false;
		}

		// Lines starting with # are considered comments
		if (line.startswith("#"))
		continue;

		StringRef sym;
		StringRef rest;
		std::tie(sym, rest) = line.split(':');
		sym = strip(sym);
		rest = strip(rest);

		symbolDependencies[sym] = {};

		while (rest.size()) {
		StringRef first;
		std::tie(first, rest) = rest.split(',');
		first = strip(first);
		symbolDependencies[sym].push_back(first);
		}
		}
		}

void ArchiveFile::parse() {		void ArchiveFile::parse() {
// Parse a MemoryBufferRef as an archive file.		// Parse a MemoryBufferRef as an archive file.
LLVM_DEBUG(dbgs() << "Parsing library: " << toString(this) << "\n");		LLVM_DEBUG(dbgs() << "Parsing library: " << toString(this) << "\n");
file = CHECK(Archive::create(mb), toString(this));		file = CHECK(Archive::create(mb), toString(this));

// Read the symbol table to construct Lazy symbols.		// Read the symbol table to construct Lazy symbols.
int count = 0;		int count = 0;
for (const Archive::Symbol &sym : file->symbols()) {		for (const Archive::Symbol &sym : file->symbols()) {
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