//
// 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.
//
//===----------------------------------------------------------------------===//
//
//
//===----------------------------------------------------------------------===//
+#include "llvm/ADT/Statistic.h"
+#include "llvm/IR/Function.h"
#include "llvm/Pass.h"
-#include "llvm/Function.h"
-#include <iostream>
+#include "llvm/Support/raw_ostream.h"
using namespace llvm;
+#define DEBUG_TYPE "hello"
+
+STATISTIC(HelloCounter, "Counts number of functions greeted");
+
namespace {
// Hello - The first implementation, without getAnalysisUsage.
struct Hello : public FunctionPass {
- virtual bool runOnFunction(Function &F) {
- std::cerr << "Hello: " << F.getName() << "\n";
+ static char ID; // Pass identification, replacement for typeid
+ Hello() : FunctionPass(ID) {}
+
+ bool runOnFunction(Function &F) override {
+ ++HelloCounter;
+ errs() << "Hello: ";
+ errs().write_escaped(F.getName()) << '\n';
return false;
}
};
- RegisterOpt<Hello> X("hello", "Hello World Pass");
+}
+
+char Hello::ID = 0;
+static RegisterPass<Hello> X("hello", "Hello World Pass");
+namespace {
// Hello2 - The second implementation with getAnalysisUsage implemented.
struct Hello2 : public FunctionPass {
- virtual bool runOnFunction(Function &F) {
- std::cerr << "Hello: " << F.getName() << "\n";
+ static char ID; // Pass identification, replacement for typeid
+ Hello2() : FunctionPass(ID) {}
+
+ bool runOnFunction(Function &F) override {
+ ++HelloCounter;
+ errs() << "Hello: ";
+ errs().write_escaped(F.getName()) << '\n';
return false;
}
- // We don't modify the program, so we preserve all analyses
- virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ // We don't modify the program, so we preserve all analyses.
+ void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesAll();
- };
+ }
};
- RegisterOpt<Hello2> Y("hello2", "Hello World Pass (with getAnalysisUsage implemented)");
}
+
+char Hello2::ID = 0;
+static RegisterPass<Hello2>
+Y("hello2", "Hello World Pass (with getAnalysisUsage implemented)");