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1545953510
`DIDescriptor`'s subclasses allow construction from incompatible
pointers, and `DIDescriptor` defines a series of `isa<>`-like functions
(e.g., `isCompileUnit()` instead of `isa<MDCompileUnit>()`) that clients
tend to use like this:
if (DICompileUnit(N).isCompileUnit())
foo(DICompileUnit(N));
These construction patterns work together to make `DIDescriptor` behave
differently from normal pointers.
Instead, use built-in `isa<>`, `dyn_cast<>`, etc., and only build
`DIDescriptor`s from pointers that are valid for their type.
I've split this into a few commits for different parts of LLVM and clang
(to decrease the patch size and increase the chance of review).
Generally the changes I made were NFC, but in a few places I made things
stricter if it made sense from the surrounded code.
Eventually a follow-up commit will remove the API for the "old" way.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234255 91177308-0d34-0410-b5e6-96231b3b80d8
79 lines
2.3 KiB
C++
79 lines
2.3 KiB
C++
//===- BreakpointPrinter.cpp - Breakpoint location printer ----------------===//
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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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/// \file
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/// \brief Breakpoint location printer.
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///
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//===----------------------------------------------------------------------===//
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#include "BreakpointPrinter.h"
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#include "llvm/ADT/StringSet.h"
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#include "llvm/IR/DebugInfo.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Pass.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 BreakpointPrinter : public ModulePass {
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raw_ostream &Out;
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static char ID;
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DITypeIdentifierMap TypeIdentifierMap;
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BreakpointPrinter(raw_ostream &out) : ModulePass(ID), Out(out) {}
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void getContextName(DIDescriptor Context, std::string &N) {
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if (DINameSpace NS = dyn_cast<MDNamespace>(Context)) {
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if (!NS.getName().empty()) {
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getContextName(NS.getContext(), N);
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N = N + NS.getName().str() + "::";
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}
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} else if (DIType TY = dyn_cast<MDType>(Context)) {
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if (!TY.getName().empty()) {
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getContextName(TY.getContext().resolve(TypeIdentifierMap), N);
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N = N + TY.getName().str() + "::";
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}
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}
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}
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bool runOnModule(Module &M) override {
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TypeIdentifierMap.clear();
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NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu");
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if (CU_Nodes)
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TypeIdentifierMap = generateDITypeIdentifierMap(CU_Nodes);
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StringSet<> Processed;
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if (NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.sp"))
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for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
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std::string Name;
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DISubprogram SP = cast_or_null<MDSubprogram>(NMD->getOperand(i));
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if (!SP)
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continue;
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getContextName(SP.getContext().resolve(TypeIdentifierMap), Name);
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Name = Name + SP.getDisplayName().str();
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if (!Name.empty() && Processed.insert(Name).second) {
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Out << Name << "\n";
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}
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}
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return false;
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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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};
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char BreakpointPrinter::ID = 0;
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}
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ModulePass *llvm::createBreakpointPrinter(raw_ostream &out) {
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return new BreakpointPrinter(out);
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}
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