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c94da20917
Summary: DataLayout keeps the string used for its creation. As a side effect it is no longer needed in the Module. This is "almost" NFC, the string is no longer canonicalized, you can't rely on two "equals" DataLayout having the same string returned by getStringRepresentation(). Get rid of DataLayoutPass: the DataLayout is in the Module The DataLayout is "per-module", let's enforce this by not duplicating it more than necessary. One more step toward non-optionality of the DataLayout in the module. Make DataLayout Non-Optional in the Module Module->getDataLayout() will never returns nullptr anymore. Reviewers: echristo Subscribers: resistor, llvm-commits, jholewinski Differential Revision: http://reviews.llvm.org/D7992 From: Mehdi Amini <mehdi.amini@apple.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231270 91177308-0d34-0410-b5e6-96231b3b80d8
72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
//===- LibCallAliasAnalysis.h - Implement AliasAnalysis for libcalls ------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the LibCallAliasAnalysis class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ANALYSIS_LIBCALLALIASANALYSIS_H
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#define LLVM_ANALYSIS_LIBCALLALIASANALYSIS_H
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#include "llvm/Analysis/AliasAnalysis.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Pass.h"
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namespace llvm {
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class LibCallInfo;
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struct LibCallFunctionInfo;
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/// LibCallAliasAnalysis - Alias analysis driven from LibCallInfo.
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struct LibCallAliasAnalysis : public FunctionPass, public AliasAnalysis {
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static char ID; // Class identification
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LibCallInfo *LCI;
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explicit LibCallAliasAnalysis(LibCallInfo *LC = nullptr)
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: FunctionPass(ID), LCI(LC) {
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initializeLibCallAliasAnalysisPass(*PassRegistry::getPassRegistry());
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}
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explicit LibCallAliasAnalysis(char &ID, LibCallInfo *LC)
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: FunctionPass(ID), LCI(LC) {
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initializeLibCallAliasAnalysisPass(*PassRegistry::getPassRegistry());
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}
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~LibCallAliasAnalysis();
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ModRefResult getModRefInfo(ImmutableCallSite CS,
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const Location &Loc) override;
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ModRefResult getModRefInfo(ImmutableCallSite CS1,
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ImmutableCallSite CS2) override {
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// TODO: Could compare two direct calls against each other if we cared to.
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return AliasAnalysis::getModRefInfo(CS1, CS2);
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}
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void getAnalysisUsage(AnalysisUsage &AU) const override;
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bool runOnFunction(Function &F) override;
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/// getAdjustedAnalysisPointer - This method is used when a pass implements
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/// an analysis interface through multiple inheritance. If needed, it
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/// should override this to adjust the this pointer as needed for the
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/// specified pass info.
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void *getAdjustedAnalysisPointer(const void *PI) override {
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if (PI == &AliasAnalysis::ID)
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return (AliasAnalysis*)this;
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return this;
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}
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private:
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ModRefResult AnalyzeLibCallDetails(const LibCallFunctionInfo *FI,
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ImmutableCallSite CS,
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const Location &Loc);
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};
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} // End of llvm namespace
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#endif
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