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e3e43d9d57
I did this a long time ago with a janky python script, but now clang-format has built-in support for this. I fed clang-format every line with a #include and let it re-sort things according to the precise LLVM rules for include ordering baked into clang-format these days. I've reverted a number of files where the results of sorting includes isn't healthy. Either places where we have legacy code relying on particular include ordering (where possible, I'll fix these separately) or where we have particular formatting around #include lines that I didn't want to disturb in this patch. This patch is *entirely* mechanical. If you get merge conflicts or anything, just ignore the changes in this patch and run clang-format over your #include lines in the files. Sorry for any noise here, but it is important to keep these things stable. I was seeing an increasing number of patches with irrelevant re-ordering of #include lines because clang-format was used. This patch at least isolates that churn, makes it easy to skip when resolving conflicts, and gets us to a clean baseline (again). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304787 91177308-0d34-0410-b5e6-96231b3b80d8
79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
//===- MemDerefPrinter.cpp - Printer for isDereferenceablePointer ---------===//
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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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#include "llvm/ADT/SetVector.h"
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#include "llvm/Analysis/Loads.h"
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#include "llvm/Analysis/MemoryDependenceAnalysis.h"
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#include "llvm/Analysis/Passes.h"
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#include "llvm/IR/CallSite.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/InstIterator.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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namespace {
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struct MemDerefPrinter : public FunctionPass {
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SmallVector<Value *, 4> Deref;
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SmallPtrSet<Value *, 4> DerefAndAligned;
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static char ID; // Pass identification, replacement for typeid
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MemDerefPrinter() : FunctionPass(ID) {
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initializeMemDerefPrinterPass(*PassRegistry::getPassRegistry());
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}
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void getAnalysisUsage(AnalysisUsage &AU) const override {
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AU.setPreservesAll();
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}
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bool runOnFunction(Function &F) override;
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void print(raw_ostream &OS, const Module * = nullptr) const override;
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void releaseMemory() override {
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Deref.clear();
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DerefAndAligned.clear();
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}
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};
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}
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char MemDerefPrinter::ID = 0;
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INITIALIZE_PASS_BEGIN(MemDerefPrinter, "print-memderefs",
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"Memory Dereferenciblity of pointers in function", false, true)
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INITIALIZE_PASS_END(MemDerefPrinter, "print-memderefs",
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"Memory Dereferenciblity of pointers in function", false, true)
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FunctionPass *llvm::createMemDerefPrinter() {
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return new MemDerefPrinter();
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}
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bool MemDerefPrinter::runOnFunction(Function &F) {
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const DataLayout &DL = F.getParent()->getDataLayout();
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for (auto &I: instructions(F)) {
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if (LoadInst *LI = dyn_cast<LoadInst>(&I)) {
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Value *PO = LI->getPointerOperand();
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if (isDereferenceablePointer(PO, DL))
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Deref.push_back(PO);
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if (isDereferenceableAndAlignedPointer(PO, LI->getAlignment(), DL))
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DerefAndAligned.insert(PO);
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}
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}
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return false;
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}
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void MemDerefPrinter::print(raw_ostream &OS, const Module *M) const {
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OS << "The following are dereferenceable:\n";
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for (Value *V: Deref) {
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V->print(OS);
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if (DerefAndAligned.count(V))
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OS << "\t(aligned)";
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else
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OS << "\t(unaligned)";
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OS << "\n\n";
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}
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}
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