--- /dev/null
+//===- AArch64TargetTransformInfo.cpp - AArch64 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
+/// AArch64 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.
+///
+//===----------------------------------------------------------------------===//
+
+#define DEBUG_TYPE "aarch64tti"
+#include "AArch64.h"
+#include "AArch64TargetMachine.h"
+#include "llvm/Analysis/TargetTransformInfo.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Target/CostTable.h"
+#include "llvm/Target/TargetLowering.h"
+using namespace llvm;
+
+// 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 initializeAArch64TTIPass(PassRegistry &);
+}
+
+namespace {
+
+class AArch64TTI LLVM_FINAL : public ImmutablePass, public TargetTransformInfo {
+ const AArch64TargetMachine *TM;
+ const AArch64Subtarget *ST;
+ const AArch64TargetLowering *TLI;
+
+ /// Estimate the overhead of scalarizing an instruction. Insert and Extract
+ /// are set if the result needs to be inserted and/or extracted from vectors.
+ unsigned getScalarizationOverhead(Type *Ty, bool Insert, bool Extract) const;
+
+public:
+ AArch64TTI() : ImmutablePass(ID), TM(0), ST(0), TLI(0) {
+ llvm_unreachable("This pass cannot be directly constructed");
+ }
+
+ AArch64TTI(const AArch64TargetMachine *TM)
+ : ImmutablePass(ID), TM(TM), ST(TM->getSubtargetImpl()),
+ TLI(TM->getTargetLowering()) {
+ initializeAArch64TTIPass(*PassRegistry::getPassRegistry());
+ }
+
+ virtual void initializePass() LLVM_OVERRIDE {
+ pushTTIStack(this);
+ }
+
+ virtual void finalizePass() {
+ popTTIStack();
+ }
+
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const LLVM_OVERRIDE {
+ TargetTransformInfo::getAnalysisUsage(AU);
+ }
+
+ /// Pass identification.
+ static char ID;
+
+ /// Provide necessary pointer adjustments for the two base classes.
+ virtual void *getAdjustedAnalysisPointer(const void *ID) LLVM_OVERRIDE {
+ if (ID == &TargetTransformInfo::ID)
+ return (TargetTransformInfo*)this;
+ return this;
+ }
+
+ /// \name Scalar TTI Implementations
+ /// @{
+
+ /// @}
+
+
+ /// \name Vector TTI Implementations
+ /// @{
+
+ unsigned getNumberOfRegisters(bool Vector) const {
+ if (Vector) {
+ if (ST->hasNEON())
+ return 32;
+ return 0;
+ }
+ return 32;
+ }
+
+ unsigned getRegisterBitWidth(bool Vector) const {
+ if (Vector) {
+ if (ST->hasNEON())
+ return 128;
+ return 0;
+ }
+ return 64;
+ }
+
+ /// @}
+};
+
+} // end anonymous namespace
+
+INITIALIZE_AG_PASS(AArch64TTI, TargetTransformInfo, "aarch64tti",
+ "AArch64 Target Transform Info", true, true, false)
+char AArch64TTI::ID = 0;
+
+ImmutablePass *
+llvm::createAArch64TargetTransformInfoPass(const AArch64TargetMachine *TM) {
+ return new AArch64TTI(TM);
+}