Sink feature IsThumb into MC layer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134608 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 19 insertions, 3 deletions

diff --git a/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp b/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
index 402ab4e46b..b709cf5e74 100644
--- a/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
+++ b/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
@@ -42,8 +42,16 @@ MCRegisterInfo *createARMMCRegisterInfo() {
 
 MCSubtargetInfo *createARMMCSubtargetInfo(StringRef TT, StringRef CPU,
                                           StringRef FS) {
+  std::string ArchFS = ARM_MC::ParseARMTriple(TT);
+  if (!FS.empty()) {
+    if (!ArchFS.empty())
+      ArchFS = ArchFS + "," + FS.str();
+    else
+      ArchFS = FS;
+  }
+
   MCSubtargetInfo *X = new MCSubtargetInfo();
-  InitARMMCSubtargetInfo(X, CPU, FS);
+  InitARMMCSubtargetInfo(X, CPU, ArchFS);
   return X;
 }
 
@@ -74,16 +82,17 @@ extern "C" void LLVMInitializeARMMCSubtargetInfo() {
                                           createARMMCSubtargetInfo);
 }
 
-std::string ARM_MC::ParseARMTriple(StringRef TT, bool &IsThumb) {
+std::string ARM_MC::ParseARMTriple(StringRef TT) {
   // Set the boolean corresponding to the current target triple, or the default
   // if one cannot be determined, to true.
   unsigned Len = TT.size();
   unsigned Idx = 0;
 
+  bool isThumb = false;
   if (Len >= 5 && TT.substr(0, 4) == "armv")
     Idx = 4;
   else if (Len >= 6 && TT.substr(0, 5) == "thumb") {
-    IsThumb = true;
+    isThumb = true;
     if (Len >= 7 && TT[5] == 'v')
       Idx = 6;
   }
@@ -116,5 +125,12 @@ std::string ARM_MC::ParseARMTriple(StringRef TT, bool &IsThumb) {
       ARMArchFeature = "+v4t";
   }
 
+  if (isThumb) {
+    if (ARMArchFeature.empty())
+      ARMArchFeature = "+thumb";
+    else
+      ARMArchFeature += ",+thumb";
+  }
+
   return ARMArchFeature;
 }