//===-- UnreachableBlockElim.cpp - Remove unreachable blocks for codegen --===//
-//
+//
// 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 pass is an extremely simple version of the SimplifyCFG pass. Its sole
// job is to delete LLVM basic blocks that are not reachable from the entry
// node. To do this, it performs a simple depth first traversal of the CFG,
#include "llvm/Pass.h"
#include "llvm/Type.h"
#include "llvm/Support/CFG.h"
+#include "llvm/Support/Compiler.h"
#include "llvm/ADT/DepthFirstIterator.h"
using namespace llvm;
namespace {
- class UnreachableBlockElim : public FunctionPass {
+ class VISIBILITY_HIDDEN UnreachableBlockElim : public FunctionPass {
virtual bool runOnFunction(Function &F);
+ public:
+ static char ID; // Pass identification, replacement for typeid
+ UnreachableBlockElim() : FunctionPass((intptr_t)&ID) {}
};
- RegisterOpt<UnreachableBlockElim>
+ char UnreachableBlockElim::ID = 0;
+ RegisterPass<UnreachableBlockElim>
X("unreachableblockelim", "Remove unreachable blocks from the CFG");
}