[llvm] r201793 - [AArch64] Add support for TargetTransformInfo Analysis.
Chad Rosier
mcrosier at codeaurora.org
Thu Feb 20 08:00:08 PST 2014
Author: mcrosier
Date: Thu Feb 20 10:00:08 2014
New Revision: 201793
URL: http://llvm.org/viewvc/llvm-project?rev=201793&view=rev
Log:
[AArch64] Add support for TargetTransformInfo Analysis.
Added:
llvm/trunk/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
Modified:
llvm/trunk/lib/Target/AArch64/AArch64.h
llvm/trunk/lib/Target/AArch64/AArch64TargetMachine.cpp
llvm/trunk/lib/Target/AArch64/AArch64TargetMachine.h
llvm/trunk/lib/Target/AArch64/CMakeLists.txt
Modified: llvm/trunk/lib/Target/AArch64/AArch64.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64.h?rev=201793&r1=201792&r2=201793&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64.h (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64.h Thu Feb 20 10:00:08 2014
@@ -33,6 +33,10 @@ FunctionPass *createAArch64CleanupLocalD
FunctionPass *createAArch64BranchFixupPass();
+/// \brief Creates an AArch64-specific Target Transformation Info pass.
+ImmutablePass *createAArch64TargetTransformInfoPass(
+ const AArch64TargetMachine *TM);
+
void LowerAArch64MachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
AArch64AsmPrinter &AP);
Modified: llvm/trunk/lib/Target/AArch64/AArch64TargetMachine.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64TargetMachine.cpp?rev=201793&r1=201792&r2=201793&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64TargetMachine.cpp (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64TargetMachine.cpp Thu Feb 20 10:00:08 2014
@@ -41,6 +41,14 @@ AArch64TargetMachine::AArch64TargetMachi
initAsmInfo();
}
+void AArch64TargetMachine::addAnalysisPasses(PassManagerBase &PM) {
+ // Add first the target-independent BasicTTI pass, then our AArch64 pass. This
+ // allows the AArch64 pass to delegate to the target independent layer when
+ // appropriate.
+ PM.add(createBasicTargetTransformInfoPass(this));
+ PM.add(createAArch64TargetTransformInfoPass(this));
+}
+
namespace {
/// AArch64 Code Generator Pass Configuration Options.
class AArch64PassConfig : public TargetPassConfig {
Modified: llvm/trunk/lib/Target/AArch64/AArch64TargetMachine.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64TargetMachine.h?rev=201793&r1=201792&r2=201793&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64TargetMachine.h (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64TargetMachine.h Thu Feb 20 10:00:08 2014
@@ -62,6 +62,8 @@ public:
return &InstrInfo.getRegisterInfo();
}
TargetPassConfig *createPassConfig(PassManagerBase &PM);
+
+ virtual void addAnalysisPasses(PassManagerBase &PM);
};
}
Added: llvm/trunk/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64TargetTransformInfo.cpp?rev=201793&view=auto
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64TargetTransformInfo.cpp (added)
+++ llvm/trunk/lib/Target/AArch64/AArch64TargetTransformInfo.cpp Thu Feb 20 10:00:08 2014
@@ -0,0 +1,116 @@
+//===- 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);
+}
Modified: llvm/trunk/lib/Target/AArch64/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/CMakeLists.txt?rev=201793&r1=201792&r2=201793&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/CMakeLists.txt (original)
+++ llvm/trunk/lib/Target/AArch64/CMakeLists.txt Thu Feb 20 10:00:08 2014
@@ -26,6 +26,7 @@ add_llvm_target(AArch64CodeGen
AArch64Subtarget.cpp
AArch64TargetMachine.cpp
AArch64TargetObjectFile.cpp
+ AArch64TargetTransformInfo.cpp
)
add_subdirectory(AsmParser)
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