mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 03:29:40 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6981 91177308-0d34-0410-b5e6-96231b3b80d8
152 lines
5.7 KiB
C++
152 lines
5.7 KiB
C++
//===- GraphChecker.cpp - Assert that various graph properties hold -------===//
|
|
//
|
|
// This pass is used to test DSA with regression tests. It can be used to check
|
|
// that certain graph properties hold, such as two nodes being disjoint, whether
|
|
// or not a node is collapsed, etc. These are the command line arguments that
|
|
// it supports:
|
|
//
|
|
// --dsgc-dsapass={local,bu,td} - Specify what flavor of graph to check
|
|
// --dsgc-abort-if-any-collapsed - Abort if any collapsed nodes are found
|
|
// --dsgc-abort-if-collapsed=<list> - Abort if a node pointed to by an SSA
|
|
// value with name in <list> is collapsed
|
|
// --dsgc-abort-if-merged=<list> - Abort if any of the named SSA values
|
|
// point to the same node.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Analysis/DataStructure.h"
|
|
#include "llvm/Analysis/DSGraph.h"
|
|
#include "Support/CommandLine.h"
|
|
#include "llvm/Value.h"
|
|
#include <set>
|
|
|
|
namespace {
|
|
enum DSPass { local, bu, td };
|
|
cl::opt<DSPass>
|
|
DSPass("dsgc-dspass", cl::Hidden,
|
|
cl::desc("Specify which DSA pass the -datastructure-gc pass should use"),
|
|
cl::values(clEnumVal(local, "Local pass"),
|
|
clEnumVal(bu, "Bottom-up pass"),
|
|
clEnumVal(td, "Top-down pass"), 0), cl::init(local));
|
|
|
|
cl::opt<bool>
|
|
AbortIfAnyCollapsed("dsgc-abort-if-any-collapsed", cl::Hidden,
|
|
cl::desc("Abort if any collapsed nodes are found"));
|
|
cl::list<std::string>
|
|
AbortIfCollapsed("dsgc-abort-if-collapsed", cl::Hidden, cl::CommaSeparated,
|
|
cl::desc("Abort if any of the named symbols is collapsed"));
|
|
cl::list<std::string>
|
|
AbortIfMerged("dsgc-abort-if-merged", cl::Hidden, cl::CommaSeparated,
|
|
cl::desc("Abort if any of the named symbols are merged together"));
|
|
|
|
struct DSGC : public FunctionPass {
|
|
DSGC();
|
|
bool doFinalization(Module &M);
|
|
bool runOnFunction(Function &F);
|
|
|
|
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
|
|
switch (DSPass) {
|
|
case local: AU.addRequired<LocalDataStructures>(); break;
|
|
case bu: AU.addRequired<BUDataStructures>(); break;
|
|
case td: AU.addRequired<TDDataStructures>(); break;
|
|
}
|
|
AU.setPreservesAll();
|
|
}
|
|
void print(std::ostream &O, const Module *M) const {}
|
|
|
|
private:
|
|
void verify(const DSGraph &G);
|
|
};
|
|
|
|
RegisterAnalysis<DSGC> X("datastructure-gc", "DSA Graph Checking Pass");
|
|
}
|
|
|
|
DSGC::DSGC() {
|
|
if (!AbortIfAnyCollapsed && AbortIfCollapsed.empty() &&
|
|
AbortIfMerged.empty()) {
|
|
std::cerr << "The -datastructure-gc is useless if you don't specify any"
|
|
" -dsgc-* options. See the -help-hidden output for a list.\n";
|
|
abort();
|
|
}
|
|
}
|
|
|
|
|
|
/// doFinalization - Verify that the globals graph is in good shape...
|
|
///
|
|
bool DSGC::doFinalization(Module &M) {
|
|
switch (DSPass) {
|
|
case local:verify(getAnalysis<LocalDataStructures>().getGlobalsGraph());break;
|
|
case bu: verify(getAnalysis<BUDataStructures>().getGlobalsGraph()); break;
|
|
case td: verify(getAnalysis<TDDataStructures>().getGlobalsGraph()); break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/// runOnFunction - Get the DSGraph for this function and verify that it is ok.
|
|
///
|
|
bool DSGC::runOnFunction(Function &F) {
|
|
switch (DSPass) {
|
|
case local: verify(getAnalysis<LocalDataStructures>().getDSGraph(F)); break;
|
|
case bu: verify(getAnalysis<BUDataStructures>().getDSGraph(F)); break;
|
|
case td: verify(getAnalysis<TDDataStructures>().getDSGraph(F)); break;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// verify - This is the function which checks to make sure that all of the
|
|
/// invariants established on the command line are true.
|
|
///
|
|
void DSGC::verify(const DSGraph &G) {
|
|
// Loop over all of the nodes, checking to see if any are collapsed...
|
|
if (AbortIfAnyCollapsed) {
|
|
const std::vector<DSNode*> &Nodes = G.getNodes();
|
|
for (unsigned i = 0, e = Nodes.size(); i != e; ++i)
|
|
if (Nodes[i]->isNodeCompletelyFolded()) {
|
|
std::cerr << "Node is collapsed: ";
|
|
Nodes[i]->print(std::cerr, &G);
|
|
abort();
|
|
}
|
|
}
|
|
|
|
if (!AbortIfCollapsed.empty() || !AbortIfMerged.empty()) {
|
|
// Convert from a list to a set, because we don't have cl::set's yet. FIXME
|
|
std::set<std::string> AbortIfCollapsedS(AbortIfCollapsed.begin(),
|
|
AbortIfCollapsed.end());
|
|
std::set<std::string> AbortIfMerged(AbortIfMerged.begin(),
|
|
AbortIfMerged.end());
|
|
|
|
|
|
// Now we loop over all of the scalars, checking to see if any are collapsed
|
|
// that are not supposed to be, or if any are merged together.
|
|
const DSGraph::ScalarMapTy &SM = G.getScalarMap();
|
|
std::map<DSNode*, std::string> AbortIfMergedNodes;
|
|
|
|
for (DSGraph::ScalarMapTy::const_iterator I = SM.begin(), E = SM.end();
|
|
I != E; ++I)
|
|
if (I->first->hasName() && I->second.getNode()) {
|
|
DSNode *N = I->second.getNode();
|
|
|
|
// Verify it is not collapsed if it is not supposed to be...
|
|
if (N->isNodeCompletelyFolded() &&
|
|
AbortIfCollapsedS.count(I->first->getName())) {
|
|
std::cerr << "Node for value '%" << I->first->getName()
|
|
<< "' is collapsed: ";
|
|
N->print(std::cerr, &G);
|
|
abort();
|
|
}
|
|
|
|
// Verify that it is not merged if it is not supposed to be...
|
|
if (AbortIfMerged.count(I->first->getName())) {
|
|
if (AbortIfMergedNodes.count(N)) {
|
|
std::cerr << "Nodes for values '%" << I->first->getName()
|
|
<< "' and '%" << AbortIfMergedNodes[N] << "' is merged: ";
|
|
N->print(std::cerr, &G);
|
|
abort();
|
|
}
|
|
AbortIfMergedNodes[N] = I->first->getName();
|
|
}
|
|
}
|
|
}
|
|
}
|