Make use of const-correct ParseCommandLineOptions

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150000 91177308-0d34-0410-b5e6-96231b3b80d8

Author: dwblaikie

lib/CodeGen/BackendUtil.cpp

@@ -246,8 +246,7 @@ bool EmitAssemblyHelper::AddEmitPasses(BackendAction Action,
     CM = llvm::CodeModel::Default;
   }
 
-  std::vector<const char *> BackendArgs;
-  BackendArgs.reserve(16);
+  SmallVector<const char *, 16> BackendArgs;
   BackendArgs.push_back("clang"); // Fake program name.
   if (!CodeGenOpts.DebugPass.empty()) {
     BackendArgs.push_back("-debug-pass");
@@ -265,7 +264,7 @@ bool EmitAssemblyHelper::AddEmitPasses(BackendAction Action,
     BackendArgs.push_back("-global-merge=false");
   BackendArgs.push_back(0);
   llvm::cl::ParseCommandLineOptions(BackendArgs.size() - 1,
-                                    const_cast<char **>(&BackendArgs[0]));
+                                    BackendArgs.data());
 
   std::string FeaturesStr;
   if (TargetOpts.Features.size()) {

lib/FrontendTool/ExecuteCompilerInvocation.cpp

@@ -157,7 +157,7 @@ bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) {
     for (unsigned i = 0; i != NumArgs; ++i)
       Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str();
     Args[NumArgs + 1] = 0;
-    llvm::cl::ParseCommandLineOptions(NumArgs + 1, const_cast<char **>(Args));
+    llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args);
   }
 
   // Honor -analyzer-checker-help.

tools/arcmt-test/arcmt-test.cpp

@@ -353,7 +353,7 @@ int main(int argc, const char **argv) {
     if (StringRef(argv[optargc]) == "--args")
       break;
   }
-  llvm::cl::ParseCommandLineOptions(optargc, const_cast<char **>(argv), "arcmt-test");
+  llvm::cl::ParseCommandLineOptions(optargc, argv, "arcmt-test");
 
   if (VerifyTransformedFiles) {
     if (ResultFiles.empty()) {

tools/driver/cc1as_main.cpp

@@ -413,7 +413,7 @@ int cc1as_main(const char **ArgBegin, const char **ArgEnd,
     for (unsigned i = 0; i != NumArgs; ++i)
       Args[i + 1] = Asm.LLVMArgs[i].c_str();
     Args[NumArgs + 1] = 0;
-    llvm::cl::ParseCommandLineOptions(NumArgs + 1, const_cast<char **>(Args));
+    llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args);
   }
 
   // Execute the invocation, unless there were parsing errors.