1 //===- Args.cpp -----------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "lld/Common/Args.h" 10 #include "lld/Common/ErrorHandler.h" 11 #include "llvm/ADT/SmallVector.h" 12 #include "llvm/ADT/StringExtras.h" 13 #include "llvm/ADT/StringRef.h" 14 #include "llvm/Option/ArgList.h" 15 #include "llvm/Support/Path.h" 16 17 using namespace llvm; 18 using namespace lld; 19 20 // TODO(sbc): Remove this once CGOptLevel can be set completely based on bitcode 21 // function metadata. 22 CodeGenOpt::Level lld::args::getCGOptLevel(int optLevelLTO) { 23 if (optLevelLTO == 3) 24 return CodeGenOpt::Aggressive; 25 assert(optLevelLTO < 3); 26 return CodeGenOpt::Default; 27 } 28 29 static int64_t getInteger(opt::InputArgList &args, unsigned key, 30 int64_t Default, unsigned base) { 31 auto *a = args.getLastArg(key); 32 if (!a) 33 return Default; 34 35 int64_t v; 36 if (to_integer(a->getValue(), v, base)) 37 return v; 38 39 StringRef spelling = args.getArgString(a->getIndex()); 40 error(spelling + ": number expected, but got '" + a->getValue() + "'"); 41 return 0; 42 } 43 44 int64_t lld::args::getInteger(opt::InputArgList &args, unsigned key, 45 int64_t Default) { 46 return ::getInteger(args, key, Default, 10); 47 } 48 49 int64_t lld::args::getHex(opt::InputArgList &args, unsigned key, 50 int64_t Default) { 51 return ::getInteger(args, key, Default, 16); 52 } 53 54 std::vector<StringRef> lld::args::getStrings(opt::InputArgList &args, int id) { 55 std::vector<StringRef> v; 56 for (auto *arg : args.filtered(id)) 57 v.push_back(arg->getValue()); 58 return v; 59 } 60 61 uint64_t lld::args::getZOptionValue(opt::InputArgList &args, int id, 62 StringRef key, uint64_t Default) { 63 for (auto *arg : args.filtered_reverse(id)) { 64 std::pair<StringRef, StringRef> kv = StringRef(arg->getValue()).split('='); 65 if (kv.first == key) { 66 uint64_t result = Default; 67 if (!to_integer(kv.second, result)) 68 error("invalid " + key + ": " + kv.second); 69 return result; 70 } 71 } 72 return Default; 73 } 74 75 std::vector<StringRef> lld::args::getLines(MemoryBufferRef mb) { 76 SmallVector<StringRef, 0> arr; 77 mb.getBuffer().split(arr, '\n'); 78 79 std::vector<StringRef> ret; 80 for (StringRef s : arr) { 81 s = s.trim(); 82 if (!s.empty() && s[0] != '#') 83 ret.push_back(s); 84 } 85 return ret; 86 } 87 88 StringRef lld::args::getFilenameWithoutExe(StringRef path) { 89 if (path.endswith_lower(".exe")) 90 return sys::path::stem(path); 91 return sys::path::filename(path); 92 } 93