#include "llvm/Target/TargetInstrInfo.h"
using namespace llvm;
+// --------------------------------------------------------------------
+// Definitions shared between DFAPacketizer.cpp and DFAPacketizerEmitter.cpp
+
+namespace {
+ DFAInput addDFAFuncUnits(DFAInput Inp, unsigned FuncUnits) {
+ return (Inp << DFA_MAX_RESOURCES) | FuncUnits;
+ }
+
+ /// Return the DFAInput for an instruction class input vector.
+ /// This function is used in both DFAPacketizer.cpp and in
+ /// DFAPacketizerEmitter.cpp.
+ DFAInput getDFAInsnInput(const std::vector<unsigned> &InsnClass) {
+ DFAInput InsnInput = 0;
+ assert ((InsnClass.size() <= DFA_MAX_RESTERMS) &&
+ "Exceeded maximum number of DFA terms");
+ for (auto U : InsnClass)
+ InsnInput = addDFAFuncUnits(InsnInput, U);
+ return InsnInput;
+ }
+}
+// --------------------------------------------------------------------
+
DFAPacketizer::DFAPacketizer(const InstrItineraryData *I,
const DFAStateInput (*SIT)[2],
const unsigned *SET):
return InsnInput;
}
+// getInsnInput - Return the DFAInput for an instruction class input vector.
+DFAInput DFAPacketizer::getInsnInput(const std::vector<unsigned> &InsnClass) {
+ return getDFAInsnInput(InsnClass);
+}
+
// canReserveResources - Check if the resources occupied by a MCInstrDesc
// are available in the current state.
bool DFAPacketizer::canReserveResources(const llvm::MCInstrDesc *MID) {