69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
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//===- InlineSimple.cpp - Code to perform simple function inlining --------===//
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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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// This file implements bottom-up inlining of functions into callees.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "inline"
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#include "llvm/CallingConv.h"
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#include "llvm/Instructions.h"
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#include "llvm/IntrinsicInst.h"
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#include "llvm/Module.h"
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#include "llvm/Type.h"
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#include "llvm/Analysis/CallGraph.h"
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#include "llvm/Analysis/InlineCost.h"
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#include "llvm/Support/CallSite.h"
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#include "llvm/Transforms/IPO.h"
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#include "llvm/Transforms/IPO/InlinerPass.h"
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#include "llvm/Target/TargetData.h"
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using namespace llvm;
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namespace {
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class SimpleInliner : public Inliner {
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InlineCostAnalyzer CA;
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public:
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SimpleInliner() : Inliner(ID) {
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initializeSimpleInlinerPass(*PassRegistry::getPassRegistry());
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}
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SimpleInliner(int Threshold) : Inliner(ID, Threshold,
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/*InsertLifetime*/true) {
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initializeSimpleInlinerPass(*PassRegistry::getPassRegistry());
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}
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static char ID; // Pass identification, replacement for typeid
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InlineCost getInlineCost(CallSite CS) {
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return CA.getInlineCost(CS, getInlineThreshold(CS));
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}
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virtual bool doInitialization(CallGraph &CG);
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};
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}
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char SimpleInliner::ID = 0;
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INITIALIZE_PASS_BEGIN(SimpleInliner, "inline",
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"Function Integration/Inlining", false, false)
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INITIALIZE_AG_DEPENDENCY(CallGraph)
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INITIALIZE_PASS_END(SimpleInliner, "inline",
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"Function Integration/Inlining", false, false)
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Pass *llvm::createFunctionInliningPass() { return new SimpleInliner(); }
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Pass *llvm::createFunctionInliningPass(int Threshold) {
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return new SimpleInliner(Threshold);
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}
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// doInitialization - Initializes the vector of functions that have been
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// annotated with the noinline attribute.
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bool SimpleInliner::doInitialization(CallGraph &CG) {
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CA.setTargetData(getAnalysisIfAvailable<TargetData>());
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return false;
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}
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