[llvm] r297393 - [Hexagon] Add -mhvx option to the Hexagon backend

[Krzysztof Parzyszek via llvm-commits]

Author: kparzysz
Date: Thu Mar  9 11:05:11 2017
New Revision: 297393

URL: http://llvm.org/viewvc/llvm-project?rev=297393&view=rev
Log:
[Hexagon] Add -mhvx option to the Hexagon backend

Modified:
    llvm/trunk/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp

Modified: llvm/trunk/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp?rev=297393&r1=297392&r2=297393&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp (original)
+++ llvm/trunk/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp Thu Mar  9 11:05:11 2017
@@ -70,6 +70,9 @@ static cl::opt<bool> HexagonV60ArchVaria
 static cl::opt<bool> HexagonV62ArchVariant("mv62", cl::Hidden, cl::init(false),
   cl::desc("Build for Hexagon V62"));
 
+static cl::opt<bool> EnableHVX("mhvx", cl::Hidden, cl::init(false),
+  cl::desc("Enable Hexagon Vector Extension (HVX)"));
+
 static StringRef DefaultArch = "hexagonv60";
 
 static StringRef HexagonGetArchVariant() {
@@ -249,8 +252,11 @@ static bool LLVM_ATTRIBUTE_UNUSED checkF
 StringRef Hexagon_MC::ParseHexagonTriple(const Triple &TT, StringRef CPU) {
   StringRef CPUName = Hexagon_MC::selectHexagonCPU(TT, CPU);
   StringRef FS = "";
-  if (CPUName.equals_lower("hexagonv60") || CPUName.equals_lower("hexagonv62"))
-    FS = "+hvx";
+  if (EnableHVX) {
+    if (CPUName.equals_lower("hexagonv60") ||
+        CPUName.equals_lower("hexagonv62"))
+      FS = "+hvx";
+  }
   return FS;
 }