#include "HexagonRegisterInfo.h"
#include "Hexagon.h"
+#include "HexagonMachineFunctionInfo.h"
#include "HexagonSubtarget.h"
#include "HexagonTargetMachine.h"
-#include "HexagonMachineFunctionInfo.h"
-#include "llvm/Function.h"
-#include "llvm/Type.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/RegisterScavenging.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/Type.h"
#include "llvm/MC/MachineLocation.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
Moves.push_back(MachineMove(0, Dst, Src));
}
+// Get the weight in units of pressure for this register class.
+const RegClassWeight &
+HexagonRegisterInfo::getRegClassWeight(const TargetRegisterClass *RC) const {
+ // Each TargetRegisterClass has a per register weight, and weight
+ // limit which must be less than the limits of its pressure sets.
+ static const RegClassWeight RCWeightTable[] = {
+ {1, 32}, // IntRegs
+ {1, 8}, // CRRegs
+ {1, 4}, // PredRegs
+ {2, 16}, // DoubleRegs
+ {0, 0} };
+ return RCWeightTable[RC->getID()];
+}
+
+/// Get the number of dimensions of register pressure.
+unsigned HexagonRegisterInfo::getNumRegPressureSets() const {
+ return 4;
+}
+
+/// Get the name of this register unit pressure set.
+const char *HexagonRegisterInfo::getRegPressureSetName(unsigned Idx) const {
+ static const char *const RegPressureSetName[] = {
+ "IntRegsRegSet",
+ "CRRegsRegSet",
+ "PredRegsRegSet",
+ "DoubleRegsRegSet"
+ };
+ assert((Idx < 4) && "Index out of bounds");
+ return RegPressureSetName[Idx];
+}
+
+/// Get the register unit pressure limit for this dimension.
+/// This limit must be adjusted dynamically for reserved registers.
+unsigned HexagonRegisterInfo::getRegPressureSetLimit(unsigned Idx) const {
+ static const int RegPressureLimit [] = { 16, 4, 2, 8 };
+ assert((Idx < 4) && "Index out of bounds");
+ return RegPressureLimit[Idx];
+}
+
+const int*
+HexagonRegisterInfo::getRegClassPressureSets(const TargetRegisterClass *RC)
+ const {
+ static const int RCSetsTable[] = {
+ 0, -1, // IntRegs
+ 1, -1, // CRRegs
+ 2, -1, // PredRegs
+ 0, -1, // DoubleRegs
+ -1 };
+ static const unsigned RCSetStartTable[] = { 0, 2, 4, 6, 0 };
+ unsigned SetListStart = RCSetStartTable[RC->getID()];
+ return &RCSetsTable[SetListStart];
+}
unsigned HexagonRegisterInfo::getEHExceptionRegister() const {
llvm_unreachable("What is the exception register");
}