include/llvm/Transforms/Utils/GuardUtils.h

   1 //===-- GuardUtils.h - Utils for work with guards ---------------*- C++ -*-===//
   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 // Utils that are used to perform transformations related to guards and their
   9 // conditions.
  10 //===----------------------------------------------------------------------===//
  11
  12 #ifndef LLVM_TRANSFORMS_UTILS_GUARDUTILS_H
  13 #define LLVM_TRANSFORMS_UTILS_GUARDUTILS_H
  14
  15 namespace llvm {
  16
  17 class CallInst;
  18 class Function;
  19
  20 /// Splits control flow at point of \p Guard, replacing it with explicit branch
  21 /// by the condition of guard's first argument. The taken branch then goes to
  22 /// the block that contains  \p Guard's successors, and the non-taken branch
  23 /// goes to a newly-created deopt block that contains a sole call of the
  24 /// deoptimize function \p DeoptIntrinsic.
  25 void makeGuardControlFlowExplicit(Function *DeoptIntrinsic, CallInst *Guard);
  26
  27 } // llvm
  28
  29 #endif // LLVM_TRANSFORMS_UTILS_GUARDUTILS_H