Fix -mfpu parsing on ARM.

- Support gcc-compatible vfpv3 name in addition to vfp3.
- Support vfpv3-d16.
- Disable neon feature for -mfpu=vfp* (yes, we were emitting Neon instructions
  for those!).



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147943 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index a241712..1edc441 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -660,12 +660,23 @@
       CmdArgs.push_back("-vfp3");
       CmdArgs.push_back("-target-feature");
       CmdArgs.push_back("-neon");
+    } else if (FPU == "vfp3-d16" || FPU == "vfpv3-d16") {
+      CmdArgs.push_back("-target-feature");
+      CmdArgs.push_back("+vfp3");
+      CmdArgs.push_back("-target-feature");
+      CmdArgs.push_back("+d16");
+      CmdArgs.push_back("-target-feature");
+      CmdArgs.push_back("-neon");
     } else if (FPU == "vfp") {
       CmdArgs.push_back("-target-feature");
       CmdArgs.push_back("+vfp2");
-    } else if (FPU == "vfp3") {
+      CmdArgs.push_back("-target-feature");
+      CmdArgs.push_back("-neon");
+    } else if (FPU == "vfp3" || FPU == "vfpv3") {
       CmdArgs.push_back("-target-feature");
       CmdArgs.push_back("+vfp3");
+      CmdArgs.push_back("-target-feature");
+      CmdArgs.push_back("-neon");
     } else if (FPU == "neon") {
       CmdArgs.push_back("-target-feature");
       CmdArgs.push_back("+neon");