//
//===----------------------------------------------------------------------===//
-#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/Support/CallSite.h"
-#include "llvm/Transforms/IPO.h"
+#include "llvm/IR/CallSite.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/Transforms/IPO/InlinerPass.h"
-#include "llvm/Target/TargetData.h"
using namespace llvm;
+#define DEBUG_TYPE "inline"
+
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));
- }
- void resetCachedCostInfo(Function *Caller) {
- CA.resetCachedCostInfo(Caller);
- }
- void growCachedCostInfo(Function* Caller, Function* Callee) {
- CA.growCachedCostInfo(Caller, Callee);
- }
- virtual bool doInitialization(CallGraph &CG);
- void releaseMemory() {
- CA.clear();
- }
- };
+/// \brief Actual 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(nullptr) {
+ initializeSimpleInlinerPass(*PassRegistry::getPassRegistry());
+ }
+
+ SimpleInliner(int Threshold)
+ : Inliner(ID, Threshold, /*InsertLifetime*/ true), ICA(nullptr) {
+ initializeSimpleInlinerPass(*PassRegistry::getPassRegistry());
+ }
+
+ static char ID; // Pass identification, replacement for typeid
+
+ InlineCost getInlineCost(CallSite CS) override {
+ return ICA->getInlineCost(CS, getInlineThreshold(CS));
+ }
+
+ bool runOnSCC(CallGraphSCC &SCC) override;
+ void getAnalysisUsage(AnalysisUsage &AU) const override;
+};
+
+static int computeThresholdFromOptLevels(unsigned OptLevel,
+ unsigned SizeOptLevel) {
+ if (OptLevel > 2)
+ return 275;
+ if (SizeOptLevel == 1) // -Os
+ return 75;
+ if (SizeOptLevel == 2) // -Oz
+ return 25;
+ return 225;
}
+} // end anonymous namespace
+
char SimpleInliner::ID = 0;
INITIALIZE_PASS_BEGIN(SimpleInliner, "inline",
"Function Integration/Inlining", false, false)
-INITIALIZE_AG_DEPENDENCY(CallGraph)
+INITIALIZE_PASS_DEPENDENCY(CallGraphWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(InlineCostAnalysis)
INITIALIZE_PASS_END(SimpleInliner, "inline",
"Function Integration/Inlining", false, false)
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;
+Pass *llvm::createFunctionInliningPass(unsigned OptLevel,
+ unsigned SizeOptLevel) {
+ return new SimpleInliner(
+ computeThresholdFromOptLevels(OptLevel, SizeOptLevel));
}
+bool SimpleInliner::runOnSCC(CallGraphSCC &SCC) {
+ ICA = &getAnalysis<InlineCostAnalysis>();
+ return Inliner::runOnSCC(SCC);
+}
+
+void SimpleInliner::getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.addRequired<InlineCostAnalysis>();
+ Inliner::getAnalysisUsage(AU);
+}