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//===-- 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);
}
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