mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-06-02 04:41:58 +00:00
52ab0bc417
preparation for de-coupling the AA implementations. In order to do this, they had to become fake-scoped using the traditional LLVM pattern of a leading initialism. These can't be actual scoped enumerations because they're bitfields and thus inherently we use them as integers. I've also renamed the behavior enums that are specific to reasoning about the mod/ref behavior of functions when called. This makes it more clear that they have a very narrow domain of applicability. I think there is a significantly cleaner API for all of this, but I don't want to try to do really substantive changes for now, I just want to refactor the things away from analysis groups so I'm preserving the exact original design and just cleaning up the names, style, and lifting out of the class. Differential Revision: http://reviews.llvm.org/D10564 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242963 91177308-0d34-0410-b5e6-96231b3b80d8
72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
//===- 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_LIBCALLALIASANALYSIS_H
|
|
#define LLVM_ANALYSIS_LIBCALLALIASANALYSIS_H
|
|
|
|
#include "llvm/Analysis/AliasAnalysis.h"
|
|
#include "llvm/IR/Module.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 = nullptr)
|
|
: FunctionPass(ID), LCI(LC) {
|
|
initializeLibCallAliasAnalysisPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
explicit LibCallAliasAnalysis(char &ID, LibCallInfo *LC)
|
|
: FunctionPass(ID), LCI(LC) {
|
|
initializeLibCallAliasAnalysisPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
~LibCallAliasAnalysis() override;
|
|
|
|
ModRefInfo getModRefInfo(ImmutableCallSite CS,
|
|
const MemoryLocation &Loc) override;
|
|
|
|
ModRefInfo getModRefInfo(ImmutableCallSite CS1,
|
|
ImmutableCallSite CS2) override {
|
|
// TODO: Could compare two direct calls against each other if we cared to.
|
|
return AliasAnalysis::getModRefInfo(CS1, CS2);
|
|
}
|
|
|
|
void getAnalysisUsage(AnalysisUsage &AU) const override;
|
|
|
|
bool runOnFunction(Function &F) override;
|
|
|
|
/// 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.
|
|
void *getAdjustedAnalysisPointer(const void *PI) override {
|
|
if (PI == &AliasAnalysis::ID)
|
|
return (AliasAnalysis*)this;
|
|
return this;
|
|
}
|
|
|
|
private:
|
|
ModRefInfo AnalyzeLibCallDetails(const LibCallFunctionInfo *FI,
|
|
ImmutableCallSite CS,
|
|
const MemoryLocation &Loc);
|
|
};
|
|
} // End of llvm namespace
|
|
|
|
#endif
|