#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/CodeGen/SelectionDAGNodes.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCInstrItineraries.h"
#include "llvm/Support/ErrorHandling.h"
//===----------------------------------------------------------------------===//
// TargetInstrInfo
-//===----------------------------------------------------------------------===//
+//
+// Methods that depend on CodeGen are implemented in
+// TargetInstrInfoImpl.cpp. Invoking them without linking libCodeGen raises a
+// link error.
+// ===----------------------------------------------------------------------===//
TargetInstrInfo::~TargetInstrInfo() {
}
const TargetRegisterClass*
TargetInstrInfo::getRegClass(const MCInstrDesc &MCID, unsigned OpNum,
- const TargetRegisterInfo *TRI) const {
+ const TargetRegisterInfo *TRI,
+ const MachineFunction &MF) const {
if (OpNum >= MCID.getNumOperands())
return 0;
short RegClass = MCID.OpInfo[OpNum].RegClass;
if (MCID.OpInfo[OpNum].isLookupPtrRegClass())
- return TRI->getPointerRegClass(RegClass);
+ return TRI->getPointerRegClass(MF, RegClass);
// Instructions like INSERT_SUBREG do not have fixed register classes.
if (RegClass < 0)
return TRI->getRegClass(RegClass);
}
-unsigned
-TargetInstrInfo::getNumMicroOps(const InstrItineraryData *ItinData,
- const MachineInstr *MI) const {
- if (!ItinData || ItinData->isEmpty())
- return 1;
-
- unsigned Class = MI->getDesc().getSchedClass();
- unsigned UOps = ItinData->Itineraries[Class].NumMicroOps;
- if (UOps)
- return UOps;
-
- // The # of u-ops is dynamically determined. The specific target should
- // override this function to return the right number.
- return 1;
-}
-
-int
-TargetInstrInfo::getOperandLatency(const InstrItineraryData *ItinData,
- const MachineInstr *DefMI, unsigned DefIdx,
- const MachineInstr *UseMI, unsigned UseIdx) const {
- if (!ItinData || ItinData->isEmpty())
- return -1;
-
- unsigned DefClass = DefMI->getDesc().getSchedClass();
- unsigned UseClass = UseMI->getDesc().getSchedClass();
- return ItinData->getOperandLatency(DefClass, DefIdx, UseClass, UseIdx);
-}
-
-int
-TargetInstrInfo::getOperandLatency(const InstrItineraryData *ItinData,
- SDNode *DefNode, unsigned DefIdx,
- SDNode *UseNode, unsigned UseIdx) const {
- if (!ItinData || ItinData->isEmpty())
- return -1;
-
- if (!DefNode->isMachineOpcode())
- return -1;
-
- unsigned DefClass = get(DefNode->getMachineOpcode()).getSchedClass();
- if (!UseNode->isMachineOpcode())
- return ItinData->getOperandCycle(DefClass, DefIdx);
- unsigned UseClass = get(UseNode->getMachineOpcode()).getSchedClass();
- return ItinData->getOperandLatency(DefClass, DefIdx, UseClass, UseIdx);
-}
-
-int TargetInstrInfo::getInstrLatency(const InstrItineraryData *ItinData,
- const MachineInstr *MI,
- unsigned *PredCost) const {
- if (!ItinData || ItinData->isEmpty())
- return 1;
-
- return ItinData->getStageLatency(MI->getDesc().getSchedClass());
-}
-
-int TargetInstrInfo::getInstrLatency(const InstrItineraryData *ItinData,
- SDNode *N) const {
- if (!ItinData || ItinData->isEmpty())
- return 1;
-
- if (!N->isMachineOpcode())
- return 1;
-
- return ItinData->getStageLatency(get(N->getMachineOpcode()).getSchedClass());
-}
-
-bool TargetInstrInfo::hasLowDefLatency(const InstrItineraryData *ItinData,
- const MachineInstr *DefMI,
- unsigned DefIdx) const {
- if (!ItinData || ItinData->isEmpty())
- return false;
-
- unsigned DefClass = DefMI->getDesc().getSchedClass();
- int DefCycle = ItinData->getOperandCycle(DefClass, DefIdx);
- return (DefCycle != -1 && DefCycle <= 1);
-}
-
/// insertNoop - Insert a noop into the instruction stream at the specified
/// point.
void TargetInstrInfo::insertNoop(MachineBasicBlock &MBB,
llvm_unreachable("Target didn't implement insertNoop!");
}
-
-bool TargetInstrInfo::isUnpredicatedTerminator(const MachineInstr *MI) const {
- const MCInstrDesc &MCID = MI->getDesc();
- if (!MCID.isTerminator()) return false;
-
- // Conditional branch is a special case.
- if (MCID.isBranch() && !MCID.isBarrier())
- return true;
- if (!MCID.isPredicable())
- return true;
- return !isPredicated(MI);
-}
-
-
/// Measure the specified inline asm to determine an approximation of its
/// length.
/// Comments (which run till the next SeparatorString or newline) do not