Simple refactoring to eliminate single-use local variable

[bogden]

Summary

Get rid of NativeMARch

Depends on D2243

[bogden]

Corrected missing namespace specifier

[rengolin]

LGTM

[rengolin]

committed in 197154

lib/Driver/Tools.cpp

if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
     // Otherwise, if we have -march= choose the base CPU for that arch.
     MArch = A->getValue();
   } else {
     // Otherwise, use the Arch from the triple.
     MArch = Triple.getArchName();
   }
 
   // Handle -march=native.
-  std::string NativeMArch;
   if (MArch == "native") {
     std::string CPU = llvm::sys::getHostCPUName();
     if (CPU != "generic") {
       // Translate the native cpu into the architecture. The switch below will
       // then chose the minimum cpu for that arch.
-      NativeMArch = std::string("arm") + arm::getLLVMArchSuffixForARM(CPU);
-      MArch = NativeMArch;
+      MArch = std::string("arm") + arm::getLLVMArchSuffixForARM(CPU);
     }
   }
 
   const char *result = llvm::StringSwitch<const char *>(MArch)
     .Cases("armv2", "armv2a","arm2")
     .Case("armv3", "arm6")
     .Case("armv3m", "arm7m")
     .Case("armv4", "strongarm")