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Use basic_string::find(char) instead of basic_string::find(const char *s, size_type pos=0)

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Many (StringRef) cannot be detected by clang-tidy performance-faster-string-find.
This commit is contained in:
Fangrui Song 2020-12-16 23:28:32 -08:00
parent 74da8abf7f
commit 8b5501e7ef
6 changed files with 7 additions and 7 deletions
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2
lib/CodeGen/MIRCanonicalizerPass.cpp
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@ -108,7 +108,7 @@ rescheduleLexographically(std::vector<MachineInstr *> instructions,
OS.flush();
// Trim the assignment, or start from the beginning in the case of a store.
const size_t i = S.find("=");
const size_t i = S.find('=');
StringInstrMap.push_back({(i == std::string::npos) ? S : S.substr(i), II});
}

2
lib/FileCheck/FileCheck.cpp
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@ -1004,7 +1004,7 @@ bool Pattern::parsePattern(StringRef PatternStr, StringRef Prefix,
// Parse string variable or legacy @LINE expression.
if (!IsNumBlock) {
size_t VarEndIdx = MatchStr.find(":");
size_t VarEndIdx = MatchStr.find(':');
size_t SpacePos = MatchStr.substr(0, VarEndIdx).find_first_of(" \t");
if (SpacePos != StringRef::npos) {
SM.PrintMessage(SMLoc::getFromPointer(MatchStr.data() + SpacePos),

2
lib/Support/Host.cpp
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@ -324,7 +324,7 @@ StringRef sys::detail::getHostCPUNameForS390x(StringRef ProcCpuinfoContent) {
SmallVector<StringRef, 32> CPUFeatures;
for (unsigned I = 0, E = Lines.size(); I != E; ++I)
if (Lines[I].startswith("features")) {
size_t Pos = Lines[I].find(":");
size_t Pos = Lines[I].find(':');
if (Pos != StringRef::npos) {
Lines[I].drop_front(Pos + 1).split(CPUFeatures, ' ');
break;

2
lib/Target/SystemZ/SystemZHazardRecognizer.cpp
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@ -179,7 +179,7 @@ void SystemZHazardRecognizer::dumpSU(SUnit *SU, raw_ostream &OS) const {
*SchedModel->getProcResource(PI->ProcResourceIdx);
std::string FU(PRD.Name);
// trim e.g. Z13_FXaUnit -> FXa
FU = FU.substr(FU.find("_") + 1);
FU = FU.substr(FU.find('_') + 1);
size_t Pos = FU.find("Unit");
if (Pos != std::string::npos)
FU.resize(Pos);

4
tools/gold/gold-plugin.cpp
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@ -691,7 +691,7 @@ static const void *getSymbolsAndView(claimed_file &F) {
static void getThinLTOOldAndNewSuffix(std::string &OldSuffix,
std::string &NewSuffix) {
assert(options::thinlto_object_suffix_replace.empty() ||
options::thinlto_object_suffix_replace.find(";") != StringRef::npos);
options::thinlto_object_suffix_replace.find(';') != StringRef::npos);
StringRef SuffixReplace = options::thinlto_object_suffix_replace;
auto Split = SuffixReplace.split(';');
OldSuffix = std::string(Split.first);
@ -847,7 +847,7 @@ static CodeGenOpt::Level getCGOptLevel() {
static void getThinLTOOldAndNewPrefix(std::string &OldPrefix,
std::string &NewPrefix) {
StringRef PrefixReplace = options::thinlto_prefix_replace;
assert(PrefixReplace.empty() || PrefixReplace.find(";") != StringRef::npos);
assert(PrefixReplace.empty() || PrefixReplace.find(';') != StringRef::npos);
auto Split = PrefixReplace.split(';');
OldPrefix = std::string(Split.first);
NewPrefix = std::string(Split.second);

2
tools/llvm-lto/llvm-lto.cpp
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@ -465,7 +465,7 @@ static void createCombinedModuleSummaryIndex() {
static void getThinLTOOldAndNewPrefix(std::string &OldPrefix,
std::string &NewPrefix) {
assert(ThinLTOPrefixReplace.empty() ||
ThinLTOPrefixReplace.find(";") != StringRef::npos);
ThinLTOPrefixReplace.find(';') != StringRef::npos);
StringRef PrefixReplace = ThinLTOPrefixReplace;
std::pair<StringRef, StringRef> Split = PrefixReplace.split(";");
OldPrefix = Split.first.str();