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

   1 //===- ReduceInvokes.cpp - Specialized Delta Pass -------------------------===//
   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 // Try to replace invokes with calls.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "ReduceInvokes.h"
  14 #include "Delta.h"
  15 #include "llvm/IR/Instructions.h"
  16 #include "llvm/Transforms/Utils/Local.h"
  17
  18 using namespace llvm;
  19
  20 static void reduceInvokesInFunction(Oracle &O, Function &F) {
  21   for (BasicBlock &BB : F) {
  22     InvokeInst *Invoke = dyn_cast<InvokeInst>(BB.getTerminator());
  23     if (Invoke && !O.shouldKeep())
  24       changeToCall(Invoke);
  25   }
  26
  27   // TODO: We most likely are leaving behind dead landingpad blocks. Should we
  28   // delete unreachable blocks now, or leave that for the unreachable block
  29   // reduction.
  30 }
  31
  32 static void reduceInvokesInModule(Oracle &O, ReducerWorkItem &WorkItem) {
  33   for (Function &F : WorkItem.getModule()) {
  34     if (F.hasPersonalityFn())
  35       reduceInvokesInFunction(O, F);
  36   }
  37 }
  38
  39 void llvm::reduceInvokesDeltaPass(TestRunner &Test) {
  40   runDeltaPass(Test, reduceInvokesInModule, "Reducing Invokes");
  41 }