- Added MCSubtargetInfo to capture subtarget features and scheduling

  itineraries.
- Refactor TargetSubtarget to be based on MCSubtargetInfo.
- Change tablegen generated subtarget info to initialize MCSubtargetInfo
  and hide more details from targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134257 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 14 insertions, 2 deletions

diff --git a/lib/Target/Alpha/AlphaSubtarget.cpp b/lib/Target/Alpha/AlphaSubtarget.cpp
index 7080327f1d..5ed2d31278 100644
--- a/lib/Target/Alpha/AlphaSubtarget.cpp
+++ b/lib/Target/Alpha/AlphaSubtarget.cpp
@@ -14,15 +14,24 @@
 #include "AlphaSubtarget.h"
 #include "Alpha.h"
 #include "AlphaGenSubtarget.inc"
+
+#define GET_SUBTARGETINFO_CTOR
+#define GET_SUBTARGETINFO_MC_DESC
+#define GET_SUBTARGETINFO_TARGET_DESC
+#include "AlphaGenSubtarget.inc"
+
 using namespace llvm;
 
 AlphaSubtarget::AlphaSubtarget(const std::string &TT, const std::string &CPU,
                                const std::string &FS)
-  : HasCT(false) {
+  : AlphaGenSubtargetInfo(), HasCT(false) {
   std::string CPUName = CPU;
   if (CPUName.empty())
     CPUName = "generic";
 
   // Parse features string.
   ParseSubtargetFeatures(FS, CPUName);
+
+  // Initialize scheduling itinerary for the specified CPU.
+  InstrItins = getInstrItineraryForCPU(CPUName);
 }
diff --git a/lib/Target/Alpha/AlphaSubtarget.h b/lib/Target/Alpha/AlphaSubtarget.h
index b1ccf26b18..0bd161c9e9 100644
--- a/lib/Target/Alpha/AlphaSubtarget.h
+++ b/lib/Target/Alpha/AlphaSubtarget.h
@@ -18,9 +18,12 @@
 #include "llvm/MC/MCInstrItineraries.h"
 #include <string>
 
+#define GET_SUBTARGETINFO_HEADER
+#include "AlphaGenSubtarget.inc"
+
 namespace llvm {
 
-class AlphaSubtarget : public TargetSubtarget {
+class AlphaSubtarget : public AlphaGenSubtargetInfo {
 protected:
 
   bool HasCT;