Replace all weight-based interfaces in MBB with probability-based interfaces, and...

[oota-llvm.git] / lib / Target / Hexagon / HexagonSubtarget.cpp

diff --git a/lib/Target/Hexagon/HexagonSubtarget.cpp b/lib/Target/Hexagon/HexagonSubtarget.cpp
index d61cc5418a4a2d844b0526ef44505063194e091f..cdd16df4cb1aa216541c45ab3a64fb608e22b0f6 100644 (file)
--- a/lib/Target/Hexagon/HexagonSubtarget.cpp
+++ b/lib/Target/Hexagon/HexagonSubtarget.cpp
@@ -16,6 +16,8 @@
 #include "HexagonRegisterInfo.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ErrorHandling.h"
+#include <map>
+
 using namespace llvm;
 
 #define DEBUG_TYPE "hexagon-subtarget"
@@ -24,57 +26,77 @@ using namespace llvm;
 #define GET_SUBTARGETINFO_TARGET_DESC
 #include "HexagonGenSubtargetInfo.inc"
 
-static cl::opt<bool>
-EnableV3("enable-hexagon-v3", cl::Hidden,
-         cl::desc("Enable Hexagon V3 instructions."));
-
-static cl::opt<bool>
-EnableMemOps(
-    "enable-hexagon-memops",
-    cl::Hidden, cl::ZeroOrMore, cl::ValueDisallowed, cl::init(true),
-    cl::desc(
-      "Generate V4 MEMOP in code generation for Hexagon target"));
-
-static cl::opt<bool>
-DisableMemOps(
-    "disable-hexagon-memops",
-    cl::Hidden, cl::ZeroOrMore, cl::ValueDisallowed, cl::init(false),
-    cl::desc(
-      "Do not generate V4 MEMOP in code generation for Hexagon target"));
-
-static cl::opt<bool>
-EnableIEEERndNear(
-    "enable-hexagon-ieee-rnd-near",
-    cl::Hidden, cl::ZeroOrMore, cl::init(false),
-    cl::desc("Generate non-chopped conversion from fp to int."));
+static cl::opt<bool> EnableMemOps("enable-hexagon-memops",
+  cl::Hidden, cl::ZeroOrMore, cl::ValueDisallowed, cl::init(true),
+  cl::desc("Generate V4 MEMOP in code generation for Hexagon target"));
+
+static cl::opt<bool> DisableMemOps("disable-hexagon-memops",
+  cl::Hidden, cl::ZeroOrMore, cl::ValueDisallowed, cl::init(false),
+  cl::desc("Do not generate V4 MEMOP in code generation for Hexagon target"));
+
+static cl::opt<bool> EnableIEEERndNear("enable-hexagon-ieee-rnd-near",
+  cl::Hidden, cl::ZeroOrMore, cl::init(false),
+  cl::desc("Generate non-chopped conversion from fp to int."));
+
+static cl::opt<bool> EnableBSBSched("enable-bsb-sched",
+  cl::Hidden, cl::ZeroOrMore, cl::init(true));
+
+static cl::opt<bool> EnableHexagonHVXDouble("enable-hexagon-hvx-double",
+  cl::Hidden, cl::ZeroOrMore, cl::init(false),
+  cl::desc("Enable Hexagon Double Vector eXtensions"));
+
+static cl::opt<bool> EnableHexagonHVX("enable-hexagon-hvx",
+  cl::Hidden, cl::ZeroOrMore, cl::init(false),
+  cl::desc("Enable Hexagon Vector eXtensions"));
 
 static cl::opt<bool> DisableHexagonMISched("disable-hexagon-misched",
-      cl::Hidden, cl::ZeroOrMore, cl::init(false),
-      cl::desc("Disable Hexagon MI Scheduling"));
+  cl::Hidden, cl::ZeroOrMore, cl::init(false),
+  cl::desc("Disable Hexagon MI Scheduling"));
+
+void HexagonSubtarget::initializeEnvironment() {
+  UseMemOps = false;
+  ModeIEEERndNear = false;
+  UseBSBScheduling = false;
+}
 
 HexagonSubtarget &
 HexagonSubtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS) {
-  // If the programmer has not specified a Hexagon version, default to -mv4.
+  // Default architecture.
   if (CPUString.empty())
-    CPUString = "hexagonv4";
-
-  if (CPUString == "hexagonv4") {
-    HexagonArchVersion = V4;
-  } else if (CPUString == "hexagonv5") {
-    HexagonArchVersion = V5;
-  } else {
+    CPUString = "hexagonv60";
+
+  static std::map<StringRef, HexagonArchEnum> CpuTable {
+    { "hexagonv4", V4 },
+    { "hexagonv5", V5 },
+    { "hexagonv55", V55 },
+    { "hexagonv60", V60 },
+  };
+
+  auto foundIt = CpuTable.find(CPUString);
+  if (foundIt != CpuTable.end())
+    HexagonArchVersion = foundIt->second;
+  else
     llvm_unreachable("Unrecognized Hexagon processor version");
-  }
 
+  UseHVXOps = false;
+  UseHVXDblOps = false;
   ParseSubtargetFeatures(CPUString, FS);
+
+  if (EnableHexagonHVX.getPosition())
+    UseHVXOps = EnableHexagonHVX;
+  if (EnableHexagonHVXDouble.getPosition())
+    UseHVXDblOps = EnableHexagonHVXDouble;
+
   return *this;
 }
 
-HexagonSubtarget::HexagonSubtarget(StringRef TT, StringRef CPU, StringRef FS,
-                                   const TargetMachine &TM)
+HexagonSubtarget::HexagonSubtarget(const Triple &TT, StringRef CPU,
+                                   StringRef FS, const TargetMachine &TM)
     : HexagonGenSubtargetInfo(TT, CPU, FS), CPUString(CPU),
       InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM, *this),
-      TSInfo(*TM.getDataLayout()), FrameLowering() {
+      FrameLowering() {
+
+  initializeEnvironment();
 
   // Initialize scheduling itinerary for the specified CPU.
   InstrItins = getInstrItineraryForCPU(CPUString);
@@ -91,6 +113,8 @@ HexagonSubtarget::HexagonSubtarget(StringRef TT, StringRef CPU, StringRef FS,
     ModeIEEERndNear = true;
   else
     ModeIEEERndNear = false;
+
+  UseBSBScheduling = hasV60TOps() && EnableBSBSched;
 }
 
 // Pin the vtable to this file.