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 int lld::args::getCGOptLevel(int optLevelLTO) { 23 return std::clamp(optLevelLTO, 2, 3); 24 } 25 26 static int64_t getInteger(opt::InputArgList &args, unsigned key, 27 int64_t Default, unsigned base) { 28 auto *a = args.getLastArg(key); 29 if (!a) 30 return Default; 31 32 int64_t v; 33 StringRef s = a->getValue(); 34 if (base == 16 && (s.starts_with("0x") || s.starts_with("0X"))) 35 s = s.drop_front(2); 36 if (to_integer(s, 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 SmallVector<StringRef, 0> lld::args::getStrings(opt::InputArgList &args, 55 int id) { 56 SmallVector<StringRef, 0> v; 57 for (auto *arg : args.filtered(id)) 58 v.push_back(arg->getValue()); 59 return v; 60 } 61 62 uint64_t lld::args::getZOptionValue(opt::InputArgList &args, int id, 63 StringRef key, uint64_t Default) { 64 for (auto *arg : args.filtered_reverse(id)) { 65 std::pair<StringRef, StringRef> kv = StringRef(arg->getValue()).split('='); 66 if (kv.first == key) { 67 uint64_t result = Default; 68 if (!to_integer(kv.second, result)) 69 error("invalid " + key + ": " + kv.second); 70 return result; 71 } 72 } 73 return Default; 74 } 75 76 std::vector<StringRef> lld::args::getLines(MemoryBufferRef mb) { 77 SmallVector<StringRef, 0> arr; 78 mb.getBuffer().split(arr, '\n'); 79 80 std::vector<StringRef> ret; 81 for (StringRef s : arr) { 82 s = s.trim(); 83 if (!s.empty() && s[0] != '#') 84 ret.push_back(s); 85 } 86 return ret; 87 } 88 89 StringRef lld::args::getFilenameWithoutExe(StringRef path) { 90 if (path.ends_with_insensitive(".exe")) 91 return sys::path::stem(path); 92 return sys::path::filename(path); 93 } 94