ReachableCode.h revision e5064ab8a8be7fbb8bb9727bea954c9fea7b40ab 
1//===- ReachableCode.h -----------------------------------------*- 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//
10// A flow-sensitive, path-insensitive analysis of unreachable code.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_CLANG_REACHABLECODE_H
15#define LLVM_CLANG_REACHABLECODE_H
16
17//===----------------------------------------------------------------------===//
18// Forward declarations.
19//===----------------------------------------------------------------------===//
20
21namespace llvm {
22class BitVector;
23} // end llvm namespace
24
25namespace clang {
26class CFGBlock;
27} // end clang namespace
28
29//===----------------------------------------------------------------------===//
30// API.
31//===----------------------------------------------------------------------===//
32
33namespace clang {
34
35/// ScanReachableFromBlock - Mark all blocks reachable from Start.
36/// Returns the total number of blocks that were marked reachable.
37unsigned ScanReachableFromBlock(const CFGBlock &B, llvm::BitVector &Reachable);
38
39} // end clang namespace
40
41#endif
42