[llvm] Use StringRef::contains (NFC)

Author: kazutakahirata

llvm/lib/AsmParser/LLLexer.cpp

@@ -279,7 +279,7 @@ lltok::Kind LLLexer::LexDollar() {
       if (CurChar == '"') {
         StrVal.assign(TokStart + 2, CurPtr - 1);
         UnEscapeLexed(StrVal);
-        if (StringRef(StrVal).find_first_of(0) != StringRef::npos) {
+        if (StringRef(StrVal).contains(0)) {
           Error("Null bytes are not allowed in names");
           return lltok::Error;
         }
@@ -362,7 +362,7 @@ lltok::Kind LLLexer::LexVar(lltok::Kind Var, lltok::Kind VarID) {
       if (CurChar == '"') {
         StrVal.assign(TokStart+2, CurPtr-1);
         UnEscapeLexed(StrVal);
-        if (StringRef(StrVal).find_first_of(0) != StringRef::npos) {
+        if (StringRef(StrVal).contains(0)) {
           Error("Null bytes are not allowed in names");
           return lltok::Error;
         }
@@ -397,7 +397,7 @@ lltok::Kind LLLexer::LexQuote() {
 
   if (CurPtr[0] == ':') {
     ++CurPtr;
-    if (StringRef(StrVal).find_first_of(0) != StringRef::npos) {
+    if (StringRef(StrVal).contains(0)) {
       Error("Null bytes are not allowed in names");
       kind = lltok::Error;
     } else {

llvm/lib/Bitcode/Reader/BitcodeReader.cpp

@@ -2646,7 +2646,7 @@ Expected<Value *> BitcodeReader::recordValue(SmallVectorImpl<uint64_t> &Record,
   Value *V = ValueList[ValueID];
 
   StringRef NameStr(ValueName.data(), ValueName.size());
-  if (NameStr.find_first_of(0) != StringRef::npos)
+  if (NameStr.contains(0))
     return error("Invalid value name");
   V->setName(NameStr);
   auto *GO = dyn_cast<GlobalObject>(V);

llvm/lib/IR/Value.cpp

@@ -330,8 +330,7 @@ void Value::setNameImpl(const Twine &NewName) {
 
   SmallString<256> NameData;
   StringRef NameRef = NeedNewName ? NewName.toStringRef(NameData) : "";
-  assert(NameRef.find_first_of(0) == StringRef::npos &&
-         "Null bytes are not allowed in names");
+  assert(!NameRef.contains(0) && "Null bytes are not allowed in names");
 
   // Name isn't changing?
   if (getName() == NameRef)