blob: c9adf3f36ad74507b077735174f47ee503d40cce (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
//===- LibCallAliasAnalysis.h - Implement AliasAnalysis for libcalls ------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the LibCallAliasAnalysis class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_ANALYSIS_LIBCALL_AA_H
#define LLVM_ANALYSIS_LIBCALL_AA_H
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Pass.h"
namespace llvm {
class LibCallInfo;
struct LibCallFunctionInfo;
/// LibCallAliasAnalysis - Alias analysis driven from LibCallInfo.
struct LibCallAliasAnalysis : public FunctionPass, public AliasAnalysis {
static char ID; // Class identification
LibCallInfo *LCI;
explicit LibCallAliasAnalysis(LibCallInfo *LC = 0)
: FunctionPass(ID), LCI(LC) {
}
explicit LibCallAliasAnalysis(char &ID, LibCallInfo *LC)
: FunctionPass(ID), LCI(LC) {
}
~LibCallAliasAnalysis();
ModRefResult getModRefInfo(ImmutableCallSite CS,
const Value *P, unsigned Size);
ModRefResult getModRefInfo(ImmutableCallSite CS1,
ImmutableCallSite CS2) {
// TODO: Could compare two direct calls against each other if we cared to.
return AliasAnalysis::getModRefInfo(CS1, CS2);
}
virtual void getAnalysisUsage(AnalysisUsage &AU) const;
virtual bool runOnFunction(Function &F) {
InitializeAliasAnalysis(this); // set up super class
return false;
}
/// getAdjustedAnalysisPointer - This method is used when a pass implements
/// an analysis interface through multiple inheritance. If needed, it
/// should override this to adjust the this pointer as needed for the
/// specified pass info.
virtual void *getAdjustedAnalysisPointer(const void *PI) {
if (PI == &AliasAnalysis::ID)
return (AliasAnalysis*)this;
return this;
}
private:
ModRefResult AnalyzeLibCallDetails(const LibCallFunctionInfo *FI,
ImmutableCallSite CS,
const Value *P, unsigned Size);
};
} // End of llvm namespace
#endif
|
