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87f14b4eec
subsequent changes are easier to review. About to fix some layering issues, and wanted to separate out the necessary churn. Also comment and sink the include of "Windows.h" in three .inc files to match the usage in Memory.inc. llvm-svn: 198685
91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
//===-- AMDGPUTargetTransformInfo.cpp - AMDGPU 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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//
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// \file
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// This file implements a TargetTransformInfo analysis pass specific to the
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// AMDGPU 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 "AMDGPUtti"
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#include "AMDGPU.h"
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#include "AMDGPUTargetMachine.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/CostTable.h"
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#include "llvm/Target/TargetLowering.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 have 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 initializeAMDGPUTTIPass(PassRegistry &);
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}
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namespace {
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class AMDGPUTTI : public ImmutablePass, public TargetTransformInfo {
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const AMDGPUTargetMachine *TM;
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const AMDGPUSubtarget *ST;
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const AMDGPUTargetLowering *TLI;
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/// Estimate the overhead of scalarizing an instruction. Insert and Extract
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/// are set if the result needs to be inserted and/or extracted from vectors.
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unsigned getScalarizationOverhead(Type *Ty, bool Insert, bool Extract) const;
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public:
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AMDGPUTTI() : ImmutablePass(ID), TM(0), ST(0), TLI(0) {
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llvm_unreachable("This pass cannot be directly constructed");
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}
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AMDGPUTTI(const AMDGPUTargetMachine *TM)
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: ImmutablePass(ID), TM(TM), ST(TM->getSubtargetImpl()),
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TLI(TM->getTargetLowering()) {
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initializeAMDGPUTTIPass(*PassRegistry::getPassRegistry());
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}
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virtual void initializePass() { pushTTIStack(this); }
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virtual void finalizePass() { popTTIStack(); }
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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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/// Pass identification.
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static char ID;
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/// Provide necessary pointer adjustments for the two base classes.
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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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virtual bool hasBranchDivergence() const;
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/// @}
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};
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} // end anonymous namespace
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INITIALIZE_AG_PASS(AMDGPUTTI, TargetTransformInfo, "AMDGPUtti",
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"AMDGPU Target Transform Info", true, true, false)
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char AMDGPUTTI::ID = 0;
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ImmutablePass *
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llvm::createAMDGPUTargetTransformInfoPass(const AMDGPUTargetMachine *TM) {
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return new AMDGPUTTI(TM);
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}
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bool AMDGPUTTI::hasBranchDivergence() const { return true; }
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