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84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
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//===-- XCoreTargetTransformInfo.cpp - XCore specific TTI pass ----------------===//
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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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/// \file
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/// This file implements a TargetTransformInfo analysis pass specific to the
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/// XCore target machine. It uses the target's detailed information to provide
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/// more precise answers to certain TTI queries, while letting the target
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/// independent and default TTI implementations handle the rest.
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///
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "xcoretti"
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#include "XCore.h"
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#include "llvm/Analysis/TargetTransformInfo.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Target/TargetLowering.h"
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#include "llvm/Target/CostTable.h"
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using namespace llvm;
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// Declare the pass initialization routine locally as target-specific passes
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// don't havve a target-wide initialization entry point, and so we rely on the
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// pass constructor initialization.
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namespace llvm {
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void initializeXCoreTTIPass(PassRegistry &);
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}
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namespace {
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class XCoreTTI : public ImmutablePass, public TargetTransformInfo {
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public:
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XCoreTTI() : ImmutablePass(ID) {
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llvm_unreachable("This pass cannot be directly constructed");
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}
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XCoreTTI(const XCoreTargetMachine *TM)
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: ImmutablePass(ID) {
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initializeXCoreTTIPass(*PassRegistry::getPassRegistry());
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}
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virtual void initializePass() {
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pushTTIStack(this);
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}
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virtual void finalizePass() {
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popTTIStack();
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}
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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TargetTransformInfo::getAnalysisUsage(AU);
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}
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static char ID;
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virtual void *getAdjustedAnalysisPointer(const void *ID) {
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if (ID == &TargetTransformInfo::ID)
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return (TargetTransformInfo*)this;
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return this;
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}
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unsigned getNumberOfRegisters(bool Vector) const {
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if (Vector) {
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return 0;
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}
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return 12;
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}
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};
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} // end anonymous namespace
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INITIALIZE_AG_PASS(XCoreTTI, TargetTransformInfo, "xcoretti",
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"XCore Target Transform Info", true, true, false)
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char XCoreTTI::ID = 0;
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ImmutablePass *
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llvm::createXCoreTargetTransformInfoPass(const XCoreTargetMachine *TM) {
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return new XCoreTTI(TM);
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}
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