Use TargetParser to parse -mhwdiv command line option in Driver

[labrinea]

Summary

Depends on http://reviews.llvm.org/D11457

[rengolin]

This looks ok, just need the LLVM patch to go in.

[rengolin]

r243398

lib/Driver/Tools.cpp

static bool isNoCommonDefault(const llvm::Triple &Triple) {
   }
 }
 
 // Handle -mhwdiv=.
 static void getARMHWDivFeatures(const Driver &D, const Arg *A,
                                 const ArgList &Args,
                                 std::vector<const char *> &Features) {
   StringRef HWDiv = A->getValue();
-  if (HWDiv == "arm") {
-    Features.push_back("+hwdiv-arm");
-    Features.push_back("-hwdiv");
-  } else if (HWDiv == "thumb") {
-    Features.push_back("-hwdiv-arm");
-    Features.push_back("+hwdiv");
-  } else if (HWDiv == "arm,thumb" || HWDiv == "thumb,arm") {
-    Features.push_back("+hwdiv-arm");
-    Features.push_back("+hwdiv");
-  } else if (HWDiv == "none") {
-    Features.push_back("-hwdiv-arm");
-    Features.push_back("-hwdiv");
-  } else
+  unsigned HWDivID = llvm::ARMTargetParser::parseHWDiv(HWDiv);
+  if (!llvm::ARMTargetParser::getHWDivFeatures(HWDivID, Features))
     D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
 }
 
 // Handle -mfpu=.
 static void getARMFPUFeatures(const Driver &D, const Arg *A,
                               const ArgList &Args,
                               std::vector<const char *> &Features) {
   StringRef FPU = A->getValue();