1 //===-- MCSubtargetInfo.cpp - Subtarget Information -----------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/MC/MCSubtargetInfo.h"
11 #include "llvm/MC/MCInstrItineraries.h"
12 #include "llvm/MC/SubtargetFeature.h"
13 #include "llvm/ADT/StringRef.h"
14 #include "llvm/Support/raw_ostream.h"
19 void MCSubtargetInfo::InitMCSubtargetInfo(StringRef CPU, StringRef FS,
20 const SubtargetFeatureKV *PF,
21 const SubtargetFeatureKV *PD,
22 const SubtargetInfoKV *PI,
26 unsigned NF, unsigned NP) {
32 ForwardingPathes = FP;
36 SubtargetFeatures Features(FS);
37 FeatureBits = Features.getFeatureBits(CPU, ProcDesc, NumProcs,
38 ProcFeatures, NumFeatures);
42 /// ReInitMCSubtargetInfo - Change CPU (and optionally supplemented with
43 /// feature string) and recompute feature bits.
44 uint64_t MCSubtargetInfo::ReInitMCSubtargetInfo(StringRef CPU, StringRef FS) {
45 SubtargetFeatures Features(FS);
46 FeatureBits = Features.getFeatureBits(CPU, ProcDesc, NumProcs,
47 ProcFeatures, NumFeatures);
52 MCSubtargetInfo::getInstrItineraryForCPU(StringRef CPU) const {
53 assert(ProcItins && "Instruction itineraries information not available!");
56 for (size_t i = 1; i < NumProcs; i++) {
57 assert(strcmp(ProcItins[i - 1].Key, ProcItins[i].Key) < 0 &&
58 "Itineraries table is not sorted");
65 const SubtargetInfoKV *Found =
66 std::lower_bound(ProcItins, ProcItins+NumProcs, KV);
67 if (Found == ProcItins+NumProcs || StringRef(Found->Key) != CPU) {
69 << "' is not a recognized processor for this target"
70 << " (ignoring processor)\n";
71 return InstrItineraryData();
74 return InstrItineraryData(Stages, OperandCycles, ForwardingPathes,
75 (InstrItinerary *)Found->Value);