1 //===-- GuardUtils.h - Utils for work with guards ---------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 // Utils that are used to perform transformations related to guards and their
10 // conditions.
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_TRANSFORMS_UTILS_GUARDUTILS_H
14 #define LLVM_TRANSFORMS_UTILS_GUARDUTILS_H
15 
16 namespace llvm {
17 
18 class CallInst;
19 class Function;
20 
21 /// Splits control flow at point of \p Guard, replacing it with explicit branch
22 /// by the condition of guard's first argument. The taken branch then goes to
23 /// the block that contains  \p Guard's successors, and the non-taken branch
24 /// goes to a newly-created deopt block that contains a sole call of the
25 /// deoptimize function \p DeoptIntrinsic.
26 void makeGuardControlFlowExplicit(Function *DeoptIntrinsic, CallInst *Guard);
27 
28 } // llvm
29 
30 #endif // LLVM_TRANSFORMS_UTILS_GUARDUTILS_H
31