Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/tools/bugpoint-passes/TestPasses.cpp

@@ -1,125 +0,0 @@
-//===- 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/IR/BasicBlock.h"
-#include "llvm/IR/Constant.h"
-#include "llvm/IR/InstVisitor.h"
-#include "llvm/IR/Instructions.h"
-#include "llvm/IR/Type.h"
-#include "llvm/Pass.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:
-    void getAnalysisUsage(AnalysisUsage &AU) const override {
-      AU.setPreservesAll();
-    }
-
-    bool runOnBasicBlock(BasicBlock &BB) override {
-      for (BasicBlock::iterator I = BB.begin(), E = BB.end(); I != E; ++I)
-        if (isa<CallInst>(*I))
-          abort();
-
-      return false;
-    }
-  };
-}
-
-char CrashOnCalls::ID = 0;
-static 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) override {
-      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;
-static RegisterPass<DeleteCalls>
-  Y("bugpoint-deletecalls",
-    "BugPoint Test Pass - Intentionally 'misoptimize' CallInsts");
-
-namespace {
-  /// CrashOnDeclFunc - This pass is used to test bugpoint.  It intentionally
-/// crashes if the module has an undefined function (ie a function that is
-/// defined in an external module).
-class CrashOnDeclFunc : public ModulePass {
-public:
-  static char ID; // Pass ID, replacement for typeid
-  CrashOnDeclFunc() : ModulePass(ID) {}
-
-private:
-  bool runOnModule(Module &M) override {
-    for (auto &F : M.functions()) {
-      if (F.isDeclaration())
-        abort();
-    }
-    return false;
-  }
-  };
-}
-
-char CrashOnDeclFunc::ID = 0;
-static RegisterPass<CrashOnDeclFunc>
-  Z("bugpoint-crash-decl-funcs",
-    "BugPoint Test Pass - Intentionally crash on declared functions");
-
-namespace {
-/// CrashOnOneCU - This pass is used to test bugpoint. It intentionally
-/// crashes if the Module has two or more compile units
-class CrashOnTooManyCUs : public ModulePass {
-public:
-  static char ID;
-  CrashOnTooManyCUs() : ModulePass(ID) {}
-
-private:
-  bool runOnModule(Module &M) override {
-    NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu");
-    if (!CU_Nodes)
-      return false;
-    if (CU_Nodes->getNumOperands() >= 2)
-      abort();
-    return false;
-  }
-};
-}
-
-char CrashOnTooManyCUs::ID = 0;
-static RegisterPass<CrashOnTooManyCUs>
-    A("bugpoint-crash-too-many-cus",
-      "BugPoint Test Pass - Intentionally crash on too many CUs");