mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 18:29:46 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64888 91177308-0d34-0410-b5e6-96231b3b80d8
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
//===- TestPasses.cpp - "buggy" passes used to test bugpoint --------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains "buggy" passes that are used to test bugpoint, to check
|
|
// that it is narrowing down testcases correctly.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/BasicBlock.h"
|
|
#include "llvm/Constant.h"
|
|
#include "llvm/Instructions.h"
|
|
#include "llvm/Pass.h"
|
|
#include "llvm/Type.h"
|
|
#include "llvm/Support/InstVisitor.h"
|
|
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
/// CrashOnCalls - This pass is used to test bugpoint. It intentionally
|
|
/// crashes on any call instructions.
|
|
class CrashOnCalls : public BasicBlockPass {
|
|
public:
|
|
static char ID; // Pass ID, replacement for typeid
|
|
CrashOnCalls() : BasicBlockPass(&ID) {}
|
|
private:
|
|
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.setPreservesAll();
|
|
}
|
|
|
|
bool runOnBasicBlock(BasicBlock &BB) {
|
|
for (BasicBlock::iterator I = BB.begin(), E = BB.end(); I != E; ++I)
|
|
if (isa<CallInst>(*I))
|
|
abort();
|
|
|
|
return false;
|
|
}
|
|
};
|
|
|
|
char CrashOnCalls::ID = 0;
|
|
RegisterPass<CrashOnCalls>
|
|
X("bugpoint-crashcalls",
|
|
"BugPoint Test Pass - Intentionally crash on CallInsts");
|
|
}
|
|
|
|
namespace {
|
|
/// DeleteCalls - This pass is used to test bugpoint. It intentionally
|
|
/// deletes some call instructions, "misoptimizing" the program.
|
|
class DeleteCalls : public BasicBlockPass {
|
|
public:
|
|
static char ID; // Pass ID, replacement for typeid
|
|
DeleteCalls() : BasicBlockPass(&ID) {}
|
|
private:
|
|
bool runOnBasicBlock(BasicBlock &BB) {
|
|
for (BasicBlock::iterator I = BB.begin(), E = BB.end(); I != E; ++I)
|
|
if (CallInst *CI = dyn_cast<CallInst>(I)) {
|
|
if (!CI->use_empty())
|
|
CI->replaceAllUsesWith(Constant::getNullValue(CI->getType()));
|
|
CI->getParent()->getInstList().erase(CI);
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
};
|
|
|
|
char DeleteCalls::ID = 0;
|
|
RegisterPass<DeleteCalls>
|
|
Y("bugpoint-deletecalls",
|
|
"BugPoint Test Pass - Intentionally 'misoptimize' CallInsts");
|
|
}
|