mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
cf0db29df2
The patch is generated using this command: tools/clang/tools/extra/clang-tidy/tool/run-clang-tidy.py -fix \ -checks=-*,llvm-namespace-comment -header-filter='llvm/.*|clang/.*' \ llvm/lib/ Thanks to Eugene Kosov for the original patch! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240137 91177308-0d34-0410-b5e6-96231b3b80d8
71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
//===- MemDerefPrinter.cpp - Printer for isDereferenceablePointer ---------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Analysis/Passes.h"
|
|
#include "llvm/ADT/SetVector.h"
|
|
#include "llvm/Analysis/MemoryDependenceAnalysis.h"
|
|
#include "llvm/Analysis/ValueTracking.h"
|
|
#include "llvm/IR/CallSite.h"
|
|
#include "llvm/IR/DataLayout.h"
|
|
#include "llvm/IR/InstIterator.h"
|
|
#include "llvm/IR/LLVMContext.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
struct MemDerefPrinter : public FunctionPass {
|
|
SmallVector<Value *, 4> Vec;
|
|
|
|
static char ID; // Pass identification, replacement for typeid
|
|
MemDerefPrinter() : FunctionPass(ID) {
|
|
initializeMemDerefPrinterPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
void getAnalysisUsage(AnalysisUsage &AU) const override {
|
|
AU.setPreservesAll();
|
|
}
|
|
bool runOnFunction(Function &F) override;
|
|
void print(raw_ostream &OS, const Module * = nullptr) const override;
|
|
void releaseMemory() override {
|
|
Vec.clear();
|
|
}
|
|
};
|
|
} // namespace
|
|
|
|
char MemDerefPrinter::ID = 0;
|
|
INITIALIZE_PASS_BEGIN(MemDerefPrinter, "print-memderefs",
|
|
"Memory Dereferenciblity of pointers in function", false, true)
|
|
INITIALIZE_PASS_END(MemDerefPrinter, "print-memderefs",
|
|
"Memory Dereferenciblity of pointers in function", false, true)
|
|
|
|
FunctionPass *llvm::createMemDerefPrinter() {
|
|
return new MemDerefPrinter();
|
|
}
|
|
|
|
bool MemDerefPrinter::runOnFunction(Function &F) {
|
|
const DataLayout &DL = F.getParent()->getDataLayout();
|
|
for (auto &I: inst_range(F)) {
|
|
if (LoadInst *LI = dyn_cast<LoadInst>(&I)) {
|
|
Value *PO = LI->getPointerOperand();
|
|
if (isDereferenceablePointer(PO, DL))
|
|
Vec.push_back(PO);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void MemDerefPrinter::print(raw_ostream &OS, const Module *M) const {
|
|
OS << "The following are dereferenceable:\n";
|
|
for (auto &V: Vec) {
|
|
V->print(OS);
|
|
OS << "\n\n";
|
|
}
|
|
}
|