| //===- 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/CallingConv.h" |
| #include "llvm/Instructions.h" |
| #include "llvm/IntrinsicInst.h" |
| #include "llvm/Module.h" |
| #include "llvm/Type.h" |
| #include "llvm/Analysis/CallGraph.h" |
| #include "llvm/Analysis/InlineCost.h" |
| #include "llvm/Support/CallSite.h" |
| #include "llvm/Transforms/IPO.h" |
| #include "llvm/Transforms/IPO/InlinerPass.h" |
| #include "llvm/Target/TargetData.h" |
| |
| using namespace llvm; |
| |
| namespace { |
| |
| class SimpleInliner : public Inliner { |
| InlineCostAnalyzer CA; |
| public: |
| SimpleInliner() : Inliner(ID) { |
| initializeSimpleInlinerPass(*PassRegistry::getPassRegistry()); |
| } |
| SimpleInliner(int Threshold) : Inliner(ID, Threshold, |
| /*InsertLifetime*/true) { |
| initializeSimpleInlinerPass(*PassRegistry::getPassRegistry()); |
| } |
| static char ID; // Pass identification, replacement for typeid |
| InlineCost getInlineCost(CallSite CS) { |
| return CA.getInlineCost(CS, getInlineThreshold(CS)); |
| } |
| virtual bool doInitialization(CallGraph &CG); |
| }; |
| } |
| |
| char SimpleInliner::ID = 0; |
| INITIALIZE_PASS_BEGIN(SimpleInliner, "inline", |
| "Function Integration/Inlining", false, false) |
| INITIALIZE_AG_DEPENDENCY(CallGraph) |
| 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); |
| } |
| |
| // doInitialization - Initializes the vector of functions that have been |
| // annotated with the noinline attribute. |
| bool SimpleInliner::doInitialization(CallGraph &CG) { |
| CA.setTargetData(getAnalysisIfAvailable<TargetData>()); |
| return false; |
| } |
| |