//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//===----------------------------------------------------------------------===//
#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/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/Support/Compiler.h"
-#include "llvm/Transforms/IPO.h"
#include "llvm/Transforms/IPO/InlinerPass.h"
-#include "llvm/Transforms/Utils/InlineCost.h"
-#include <set>
using namespace llvm;
namespace {
- class VISIBILITY_HIDDEN SimpleInliner : public Inliner {
- std::set<const Function*> NeverInline; // Functions that are never inlined
- InlineCostAnalyzer CA;
- public:
- SimpleInliner() : Inliner(&ID) {}
- static char ID; // Pass identification, replacement for typeid
- int getInlineCost(CallSite CS) {
- return CA.getInlineCost(CS, NeverInline);
- }
- virtual bool doInitialization(CallGraph &CG);
- };
- char SimpleInliner::ID = 0;
- RegisterPass<SimpleInliner> X("inline", "Function Integration/Inlining");
-}
+/// \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;
-Pass *llvm::createFunctionInliningPass() { return new SimpleInliner(); }
+public:
+ SimpleInliner() : Inliner(ID), ICA(0) {
+ initializeSimpleInlinerPass(*PassRegistry::getPassRegistry());
+ }
-// doInitialization - Initializes the vector of functions that have been
-// annotated with the noinline attribute.
-bool SimpleInliner::doInitialization(CallGraph &CG) {
-
- Module &M = CG.getModule();
-
- // Get llvm.noinline
- GlobalVariable *GV = M.getNamedGlobal("llvm.noinline");
-
- if (GV == 0)
- return false;
+ SimpleInliner(int Threshold)
+ : Inliner(ID, Threshold, /*InsertLifetime*/ true), ICA(0) {
+ initializeSimpleInlinerPass(*PassRegistry::getPassRegistry());
+ }
- const ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
-
- if (InitList == 0)
- return false;
+ static char ID; // Pass identification, replacement for typeid
- // Iterate over each element and add to the NeverInline set
- for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
-
- // Get Source
- const Constant *Elt = InitList->getOperand(i);
-
- if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(Elt))
- if (CE->getOpcode() == Instruction::BitCast)
- Elt = CE->getOperand(0);
-
- // Insert into set of functions to never inline
- if (const Function *F = dyn_cast<Function>(Elt))
- NeverInline.insert(F);
+ InlineCost getInlineCost(CallSite CS) {
+ return ICA->getInlineCost(CS, getInlineThreshold(CS));
}
-
- return false;
+
+ 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);
+}