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.
getCGOptLevel(int optLevelLTO)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
getInteger(opt::InputArgList & args,unsigned key,int64_t Default,unsigned base)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 StringRef s = a->getValue();
37 if (base == 16 && (s.startswith("0x") || s.startswith("0X")))
38 s = s.drop_front(2);
39 if (to_integer(s, v, base))
40 return v;
41
42 StringRef spelling = args.getArgString(a->getIndex());
43 error(spelling + ": number expected, but got '" + a->getValue() + "'");
44 return 0;
45 }
46
getInteger(opt::InputArgList & args,unsigned key,int64_t Default)47 int64_t lld::args::getInteger(opt::InputArgList &args, unsigned key,
48 int64_t Default) {
49 return ::getInteger(args, key, Default, 10);
50 }
51
getHex(opt::InputArgList & args,unsigned key,int64_t Default)52 int64_t lld::args::getHex(opt::InputArgList &args, unsigned key,
53 int64_t Default) {
54 return ::getInteger(args, key, Default, 16);
55 }
56
getStrings(opt::InputArgList & args,int id)57 SmallVector<StringRef, 0> lld::args::getStrings(opt::InputArgList &args,
58 int id) {
59 SmallVector<StringRef, 0> v;
60 for (auto *arg : args.filtered(id))
61 v.push_back(arg->getValue());
62 return v;
63 }
64
getZOptionValue(opt::InputArgList & args,int id,StringRef key,uint64_t Default)65 uint64_t lld::args::getZOptionValue(opt::InputArgList &args, int id,
66 StringRef key, uint64_t Default) {
67 for (auto *arg : args.filtered_reverse(id)) {
68 std::pair<StringRef, StringRef> kv = StringRef(arg->getValue()).split('=');
69 if (kv.first == key) {
70 uint64_t result = Default;
71 if (!to_integer(kv.second, result))
72 error("invalid " + key + ": " + kv.second);
73 return result;
74 }
75 }
76 return Default;
77 }
78
getLines(MemoryBufferRef mb)79 std::vector<StringRef> lld::args::getLines(MemoryBufferRef mb) {
80 SmallVector<StringRef, 0> arr;
81 mb.getBuffer().split(arr, '\n');
82
83 std::vector<StringRef> ret;
84 for (StringRef s : arr) {
85 s = s.trim();
86 if (!s.empty() && s[0] != '#')
87 ret.push_back(s);
88 }
89 return ret;
90 }
91
getFilenameWithoutExe(StringRef path)92 StringRef lld::args::getFilenameWithoutExe(StringRef path) {
93 if (path.endswith_insensitive(".exe"))
94 return sys::path::stem(path);
95 return sys::path::filename(path);
96 }
97