[cfe-commits] [PATCH] Add vfpv3-d16 and fix vfp2/vfp3 handling in the Clang driver

[Evgeniy Stepanov]

Hi,

this patch fixes a few issues with driver support for -mfpu on ARM:
- support gcc-compatible vfpv3 name in addition to vfp3
- support vfpv3-d16
- disable neon feature for -mfpu=vfp* (yes, right now for any -mfpu
starting with vfp we emit Neon instructions!).

Please review.

Index: tools/clang/lib/Basic/Targets.cpp
===================================================================
--- tools/clang/lib/Basic/Targets.cpp	(revision 146864)
+++ tools/clang/lib/Basic/Targets.cpp	(working copy)
@@ -2581,7 +2581,7 @@
                                  const std::string &Name,
                                  bool Enabled) const {
     if (Name == "soft-float" || Name == "soft-float-abi" ||
-        Name == "vfp2" || Name == "vfp3" || Name == "neon") {
+        Name == "vfp2" || Name == "vfp3" || Name == "neon" || Name == "d16") {
       Features[Name] = Enabled;
     } else
       return false;
Index: tools/clang/lib/Driver/Tools.cpp
===================================================================
--- tools/clang/lib/Driver/Tools.cpp	(revision 146864)
+++ tools/clang/lib/Driver/Tools.cpp	(working copy)
@@ -652,12 +662,23 @@
       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");

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