//
// 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 "block-placement"
#include "llvm/Analysis/ProfileInfo.h"
#include "llvm/Function.h"
#include "llvm/Pass.h"
#include <set>
using namespace llvm;
-namespace {
- Statistic<> NumMoved("block-placement", "Number of basic blocks moved");
+STATISTIC(NumMoved, "Number of basic blocks moved");
+namespace {
struct BlockPlacement : public FunctionPass {
+ static char ID; // Pass identification, replacement for typeid
+ BlockPlacement() : FunctionPass(ID) {
+ initializeBlockPlacementPass(*PassRegistry::getPassRegistry());
+ }
+
virtual bool runOnFunction(Function &F);
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
/// successors.
void PlaceBlocks(BasicBlock *BB);
};
-
- RegisterPass<BlockPlacement> X("block-placement",
- "Profile Guided Basic Block Placement");
}
+char BlockPlacement::ID = 0;
+INITIALIZE_PASS_BEGIN(BlockPlacement, "block-placement",
+ "Profile Guided Basic Block Placement", false, false)
+INITIALIZE_AG_DEPENDENCY(ProfileInfo)
+INITIALIZE_PASS_END(BlockPlacement, "block-placement",
+ "Profile Guided Basic Block Placement", false, false)
+
FunctionPass *llvm::createBlockPlacementPass() { return new BlockPlacement(); }
bool BlockPlacement::runOnFunction(Function &F) {
/*empty*/;
if (SI == E) return; // No more successors to place.
- unsigned MaxExecutionCount = PI->getExecutionCount(*SI);
+ double MaxExecutionCount = PI->getExecutionCount(*SI);
BasicBlock *MaxSuccessor = *SI;
// Scan for more frequently executed successors
for (; SI != E; ++SI)
if (!PlacedBlocks.count(*SI)) {
- unsigned Count = PI->getExecutionCount(*SI);
+ double Count = PI->getExecutionCount(*SI);
if (Count > MaxExecutionCount ||
// Prefer to not disturb the code.
(Count == MaxExecutionCount && *SI == &*InsertPos)) {