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Diffstat (limited to 'contrib/llvm/lib/Transforms/IPO/InlineSimple.cpp')
-rw-r--r-- | contrib/llvm/lib/Transforms/IPO/InlineSimple.cpp | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Transforms/IPO/InlineSimple.cpp b/contrib/llvm/lib/Transforms/IPO/InlineSimple.cpp new file mode 100644 index 0000000..a4f7026 --- /dev/null +++ b/contrib/llvm/lib/Transforms/IPO/InlineSimple.cpp @@ -0,0 +1,83 @@ +//===- InlineSimple.cpp - Code to perform simple function inlining --------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file implements bottom-up inlining of functions into callees. +// +//===----------------------------------------------------------------------===// + +#define DEBUG_TYPE "inline" +#include "llvm/Transforms/IPO.h" +#include "llvm/Analysis/CallGraph.h" +#include "llvm/Analysis/InlineCost.h" +#include "llvm/IR/CallingConv.h" +#include "llvm/IR/DataLayout.h" +#include "llvm/IR/Instructions.h" +#include "llvm/IR/IntrinsicInst.h" +#include "llvm/IR/Module.h" +#include "llvm/IR/Type.h" +#include "llvm/Support/CallSite.h" +#include "llvm/Transforms/IPO/InlinerPass.h" + +using namespace llvm; + +namespace { + +/// \brief Actaul inliner pass implementation. +/// +/// The common implementation of the inlining logic is shared between this +/// inliner pass and the always inliner pass. The two passes use different cost +/// analyses to determine when to inline. +class SimpleInliner : public Inliner { + InlineCostAnalysis *ICA; + +public: + SimpleInliner() : Inliner(ID), ICA(0) { + initializeSimpleInlinerPass(*PassRegistry::getPassRegistry()); + } + + SimpleInliner(int Threshold) + : Inliner(ID, Threshold, /*InsertLifetime*/ true), ICA(0) { + initializeSimpleInlinerPass(*PassRegistry::getPassRegistry()); + } + + static char ID; // Pass identification, replacement for typeid + + InlineCost getInlineCost(CallSite CS) { + return ICA->getInlineCost(CS, getInlineThreshold(CS)); + } + + virtual bool runOnSCC(CallGraphSCC &SCC); + virtual void getAnalysisUsage(AnalysisUsage &AU) const; +}; + +} // end anonymous namespace + +char SimpleInliner::ID = 0; +INITIALIZE_PASS_BEGIN(SimpleInliner, "inline", + "Function Integration/Inlining", false, false) +INITIALIZE_AG_DEPENDENCY(CallGraph) +INITIALIZE_PASS_DEPENDENCY(InlineCostAnalysis) +INITIALIZE_PASS_END(SimpleInliner, "inline", + "Function Integration/Inlining", false, false) + +Pass *llvm::createFunctionInliningPass() { return new SimpleInliner(); } + +Pass *llvm::createFunctionInliningPass(int Threshold) { + return new SimpleInliner(Threshold); +} + +bool SimpleInliner::runOnSCC(CallGraphSCC &SCC) { + ICA = &getAnalysis<InlineCostAnalysis>(); + return Inliner::runOnSCC(SCC); +} + +void SimpleInliner::getAnalysisUsage(AnalysisUsage &AU) const { + AU.addRequired<InlineCostAnalysis>(); + Inliner::getAnalysisUsage(AU); +} |