#include "HexagonRegisterInfo.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
+#include <map>
+
using namespace llvm;
+#define DEBUG_TYPE "hexagon-subtarget"
+
#define GET_SUBTARGETINFO_CTOR
#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::desc("Generate V4 memop instructions."));
-
-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."));
-
-HexagonSubtarget::HexagonSubtarget(StringRef TT, StringRef CPU, StringRef FS):
- HexagonGenSubtargetInfo(TT, CPU, FS),
- HexagonArchVersion(V2),
- CPUString(CPU.str()) {
- ParseSubtargetFeatures(CPU, FS);
-
- switch(HexagonArchVersion) {
- case HexagonSubtarget::V2:
- break;
- case HexagonSubtarget::V3:
- EnableV3 = true;
- break;
- case HexagonSubtarget::V4:
- break;
- case HexagonSubtarget::V5:
- break;
- default:
- llvm_unreachable("Unknown Architecture Version.");
- }
+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"));
+
+void HexagonSubtarget::initializeEnvironment() {
+ UseMemOps = false;
+ ModeIEEERndNear = false;
+ UseBSBScheduling = false;
+}
+
+HexagonSubtarget &
+HexagonSubtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS) {
+ CPUString = HEXAGON_MC::selectHexagonCPU(getTargetTriple(), CPU);
+
+ 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(const Triple &TT, StringRef CPU,
+ StringRef FS, const TargetMachine &TM)
+ : HexagonGenSubtargetInfo(TT, CPU, FS), CPUString(CPU),
+ InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM, *this),
+ FrameLowering() {
+
+ initializeEnvironment();
// Initialize scheduling itinerary for the specified CPU.
InstrItins = getInstrItineraryForCPU(CPUString);
- if (EnableMemOps)
+ // UseMemOps on by default unless disabled explicitly
+ if (DisableMemOps)
+ UseMemOps = false;
+ else if (EnableMemOps)
UseMemOps = true;
else
UseMemOps = false;
ModeIEEERndNear = true;
else
ModeIEEERndNear = false;
+
+ UseBSBScheduling = hasV60TOps() && EnableBSBSched;
}
+// Pin the vtable to this file.
+void HexagonSubtarget::anchor() {}
+
+bool HexagonSubtarget::enableMachineScheduler() const {
+ if (DisableHexagonMISched.getNumOccurrences())
+ return !DisableHexagonMISched;
+ return true;
+}