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94214703d9
itineraries. - Refactor TargetSubtarget to be based on MCSubtargetInfo. - Change tablegen generated subtarget info to initialize MCSubtargetInfo and hide more details from targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134257 91177308-0d34-0410-b5e6-96231b3b80d8
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
//===-- MCSubtargetInfo.cpp - Subtarget Information -----------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/MC/MCInstrItineraries.h"
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#include "llvm/MC/SubtargetFeature.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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using namespace llvm;
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InstrItineraryData
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MCSubtargetInfo::getInstrItineraryForCPU(StringRef CPU) const {
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assert(ProcItins && "Instruction itineraries information not available!");
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#ifndef NDEBUG
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for (size_t i = 1; i < NumProcs; i++) {
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assert(strcmp(ProcItins[i - 1].Key, ProcItins[i].Key) < 0 &&
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"Itineraries table is not sorted");
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}
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#endif
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// Find entry
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SubtargetInfoKV KV;
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KV.Key = CPU.data();
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const SubtargetInfoKV *Found =
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std::lower_bound(ProcItins, ProcItins+NumProcs, KV);
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if (Found == ProcItins+NumProcs || StringRef(Found->Key) != CPU) {
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errs() << "'" << CPU
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<< "' is not a recognized processor for this target"
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<< " (ignoring processor)\n";
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return InstrItineraryData();
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}
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return InstrItineraryData(Stages, OperandCycles, ForwardingPathes,
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(InstrItinerary *)Found->Value);
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}
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