Drop useless const in for-range loops.

StringRefs always point to immutable memory so the const doesn't add value
here. Also quiets clang's -Wrange-loop-analysis which warns about the implicit
copying.

llvm-svn: 248496

4 files changed, 11 insertions, 11 deletions

diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index c29059bdeb4..0c0421321e5 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -215,7 +215,7 @@ DerivedArgList *Driver::TranslateInputArgs(const InputArgList &Args) const {
       DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_Xlinker__no_demangle));
 
       // Add the remaining values as Xlinker arguments.
-      for (const StringRef Val : A->getValues())
+      for (StringRef Val : A->getValues())
         if (Val != "--no-demangle")
           DAL->AddSeparateArg(A, Opts->getOption(options::OPT_Xlinker), Val);
 
@@ -259,7 +259,7 @@ DerivedArgList *Driver::TranslateInputArgs(const InputArgList &Args) const {
     // Pick up inputs via the -- option.
     if (A->getOption().matches(options::OPT__DASH_DASH)) {
       A->claim();
-      for (const StringRef Val : A->getValues())
+      for (StringRef Val : A->getValues())
         DAL->append(MakeInputArg(*DAL, Opts, Val));
       continue;
     }
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index 04ea874e206..668fc0252f5 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -1213,20 +1213,20 @@ void Generic_GCC::GCCInstallationDetector::init(
   for (const std::string &Prefix : Prefixes) {
     if (!llvm::sys::fs::exists(Prefix))
       continue;
-    for (const StringRef Suffix : CandidateLibDirs) {
+    for (StringRef Suffix : CandidateLibDirs) {
       const std::string LibDir = Prefix + Suffix.str();
       if (!llvm::sys::fs::exists(LibDir))
         continue;
-      for (const StringRef Candidate : ExtraTripleAliases) // Try these first.
+      for (StringRef Candidate : ExtraTripleAliases) // Try these first.
         ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
-      for (const StringRef Candidate : CandidateTripleAliases)
+      for (StringRef Candidate : CandidateTripleAliases)
         ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
     }
-    for (const StringRef Suffix : CandidateBiarchLibDirs) {
+    for (StringRef Suffix : CandidateBiarchLibDirs) {
       const std::string LibDir = Prefix + Suffix.str();
       if (!llvm::sys::fs::exists(LibDir))
         continue;
-      for (const StringRef Candidate : CandidateBiarchTripleAliases)
+      for (StringRef Candidate : CandidateBiarchTripleAliases)
         ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate,
                                /*NeedsBiarchSuffix=*/ true);
     }
@@ -3091,7 +3091,7 @@ static Distro DetectDistro(llvm::Triple::ArchType Arch) {
     SmallVector<StringRef, 16> Lines;
     Data.split(Lines, "\n");
     Distro Version = UnknownDistro;
-    for (const StringRef Line : Lines)
+    for (StringRef Line : Lines)
       if (Version == UnknownDistro && Line.startswith("DISTRIB_CODENAME="))
         Version = llvm::StringSwitch<Distro>(Line.substr(17))
                       .Case("hardy", UbuntuHardy)
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 682c7e5255e..e13144ffebf 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -1935,7 +1935,7 @@ static bool DecodeAArch64Features(const Driver &D, StringRef text,
   SmallVector<StringRef, 8> Split;
   text.split(Split, StringRef("+"), -1, false);
 
-  for (const StringRef Feature : Split) {
+  for (StringRef Feature : Split) {
     const char *result = llvm::StringSwitch<const char *>(Feature)
                              .Case("fp", "+fp-armv8")
                              .Case("simd", "+neon")
@@ -2344,7 +2344,7 @@ static void CollectArgsForIntegratedAssembler(Compilation &C,
        Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler)) {
     A->claim();
 
-    for (const StringRef Value : A->getValues()) {
+    for (StringRef Value : A->getValues()) {
       if (TakeNextArg) {
         CmdArgs.push_back(Value.data());
         TakeNextArg = false;
diff --git a/clang/lib/StaticAnalyzer/Checkers/MacOSKeychainAPIChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/MacOSKeychainAPIChecker.cpp
index 547aa7540d9..294f3617d71 100644
--- a/clang/lib/StaticAnalyzer/Checkers/MacOSKeychainAPIChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/MacOSKeychainAPIChecker.cpp
@@ -589,7 +589,7 @@ void MacOSKeychainAPIChecker::checkDeadSymbols(SymbolReaper &SR,
     return;
 
   // Generate the error reports.
-  for (const auto P : Errors)
+  for (const auto &P : Errors)
     C.emitReport(generateAllocatedDataNotReleasedReport(P, N, C));
 
   // Generate the new, cleaned up state.