| //===-- XCoreTargetTransformInfo.cpp - XCore specific TTI pass ----------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| /// \file |
| /// This file implements a TargetTransformInfo analysis pass specific to the |
| /// XCore target machine. It uses the target's detailed information to provide |
| /// more precise answers to certain TTI queries, while letting the target |
| /// independent and default TTI implementations handle the rest. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #include "XCore.h" |
| #include "llvm/Analysis/TargetTransformInfo.h" |
| #include "llvm/Support/Debug.h" |
| #include "llvm/Target/CostTable.h" |
| #include "llvm/Target/TargetLowering.h" |
| using namespace llvm; |
| |
| #define DEBUG_TYPE "xcoretti" |
| |
| // Declare the pass initialization routine locally as target-specific passes |
| // don't have a target-wide initialization entry point, and so we rely on the |
| // pass constructor initialization. |
| namespace llvm { |
| void initializeXCoreTTIPass(PassRegistry &); |
| } |
| |
| namespace { |
| |
| class XCoreTTI final : public ImmutablePass, public TargetTransformInfo { |
| public: |
| XCoreTTI() : ImmutablePass(ID) { |
| llvm_unreachable("This pass cannot be directly constructed"); |
| } |
| |
| XCoreTTI(const XCoreTargetMachine *TM) |
| : ImmutablePass(ID) { |
| initializeXCoreTTIPass(*PassRegistry::getPassRegistry()); |
| } |
| |
| void initializePass() override { |
| pushTTIStack(this); |
| } |
| |
| void getAnalysisUsage(AnalysisUsage &AU) const override { |
| TargetTransformInfo::getAnalysisUsage(AU); |
| } |
| |
| static char ID; |
| |
| void *getAdjustedAnalysisPointer(const void *ID) override { |
| if (ID == &TargetTransformInfo::ID) |
| return (TargetTransformInfo*)this; |
| return this; |
| } |
| |
| unsigned getNumberOfRegisters(bool Vector) const override { |
| if (Vector) { |
| return 0; |
| } |
| return 12; |
| } |
| }; |
| |
| } // end anonymous namespace |
| |
| INITIALIZE_AG_PASS(XCoreTTI, TargetTransformInfo, "xcoretti", |
| "XCore Target Transform Info", true, true, false) |
| char XCoreTTI::ID = 0; |
| |
| |
| ImmutablePass * |
| llvm::createXCoreTargetTransformInfoPass(const XCoreTargetMachine *TM) { |
| return new XCoreTTI(TM); |
| } |