llvm/tools/llvm-reduce/deltas/Utils.cpp

   1 //===- Utils.cpp - llvm-reduce utility functions --------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file contains some utility functions supporting llvm-reduce.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "Utils.h"
  14 #include "llvm/IR/Constants.h"
  15 #include "llvm/IR/GlobalAlias.h"
  16 #include "llvm/IR/GlobalIFunc.h"
  17
  18 using namespace llvm;
  19
  20 extern cl::OptionCategory LLVMReduceOptions;
  21
  22 cl::opt<bool> llvm::Verbose("verbose",
  23                             cl::desc("Print extra debugging information"),
  24                             cl::init(false), cl::cat(LLVMReduceOptions));
  25
  26 Value *llvm::getDefaultValue(Type *T) {
  27   return T->isVoidTy() ? PoisonValue::get(T) : Constant::getNullValue(T);
  28 }
  29
  30 bool llvm::hasAliasUse(Function &F) {
  31   return any_of(F.users(), [](User *U) {
  32       return isa<GlobalAlias>(U) || isa<GlobalIFunc>(U);
  33     });
  34 }
  35
  36 bool llvm::hasAliasOrBlockAddressUse(Function &F) {
  37   return any_of(F.users(), [](User *U) {
  38     return isa<GlobalAlias, GlobalIFunc, BlockAddress>(U);
  39   });
  40 }