#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
-#include "llvm/CodeGen/DFAPacketizerDefs.h"
#include "llvm/TableGen/Record.h"
#include "llvm/TableGen/TableGenBackend.h"
#include "llvm/Support/Debug.h"
#include <queue>
using namespace llvm;
+// --------------------------------------------------------------------
+// Definitions shared between DFAPacketizer.cpp and DFAPacketizerEmitter.cpp
+
+// DFA_MAX_RESTERMS * DFA_MAX_RESOURCES must fit within sizeof DFAInput.
+// This is verified in DFAPacketizer.cpp:DFAPacketizer::DFAPacketizer.
+//
+// e.g. terms x resource bit combinations that fit in uint32_t:
+// 4 terms x 8 bits = 32 bits
+// 3 terms x 10 bits = 30 bits
+// 2 terms x 16 bits = 32 bits
+//
+// e.g. terms x resource bit combinations that fit in uint64_t:
+// 8 terms x 8 bits = 64 bits
+// 7 terms x 9 bits = 63 bits
+// 6 terms x 10 bits = 60 bits
+// 5 terms x 12 bits = 60 bits
+// 4 terms x 16 bits = 64 bits <--- current
+// 3 terms x 21 bits = 63 bits
+// 2 terms x 32 bits = 64 bits
+//
+#define DFA_MAX_RESTERMS 4 // The max # of AND'ed resource terms.
+#define DFA_MAX_RESOURCES 16 // The max # of resource bits in one term.
+
+typedef uint64_t DFAInput;
+typedef int64_t DFAStateInput;
+#define DFA_TBLTYPE "int64_t" // For generating DFAStateInputTable.
+
+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;
+ }
+}
+// --------------------------------------------------------------------
+
#ifndef NDEBUG
// To enable debugging, run llvm-tblgen with: "-debug-only dfa-emitter".
//