LLVM 20.0.0git
ValueLatticeUtils.h
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1//===-- ValueLatticeUtils.h - Utils for solving lattices --------*- 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//
9// This file declares common functions useful for performing data-flow analyses
10// that propagate values across function boundaries.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_ANALYSIS_VALUELATTICEUTILS_H
15#define LLVM_ANALYSIS_VALUELATTICEUTILS_H
16
17namespace llvm {
18
19class Function;
20class GlobalVariable;
21
22/// Determine if the values of the given function's arguments can be tracked
23/// interprocedurally. The value of an argument can be tracked if the function
24/// has local linkage and its address is not taken.
26
27/// Determine if the values of the given function's returns can be tracked
28/// interprocedurally. Return values can be tracked if the function has an
29/// exact definition and it doesn't have the "naked" attribute. Naked functions
30/// may contain assembly code that returns untrackable values.
32
33/// Determine if the value maintained in the given global variable can be
34/// tracked interprocedurally. A value can be tracked if the global variable
35/// has local linkage and is only used by non-volatile loads and stores.
36bool canTrackGlobalVariableInterprocedurally(GlobalVariable *GV);
37
38} // end namespace llvm
39
40#endif // LLVM_ANALYSIS_VALUELATTICEUTILS_H
#define F(x, y, z)
Definition: MD5.cpp:55
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
bool canTrackGlobalVariableInterprocedurally(GlobalVariable *GV)
Determine if the value maintained in the given global variable can be tracked interprocedurally.
bool canTrackReturnsInterprocedurally(Function *F)
Determine if the values of the given function's returns can be tracked interprocedurally.
bool canTrackArgumentsInterprocedurally(Function *F)
Determine if the values of the given function's arguments can be tracked interprocedurally.