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Print pairwise dependence results, add testcases.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74402 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andreas Bolka
2009-06-28 00:35:22 +00:00
parent f35626d3cd
commit c6a303052b
6 changed files with 139 additions and 2 deletions
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28
lib/Analysis/LoopDependenceAnalysis.cpp
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@ -40,6 +40,16 @@ static inline bool isMemRefInstr(const Value *I) {
return isa<LoadInst>(I) || isa<StoreInst>(I);
}
static void getMemRefInstrs(
const Loop *L, SmallVectorImpl<Instruction*> &memrefs) {
for (Loop::block_iterator b = L->block_begin(), be = L->block_end();
b != be; ++b)
for (BasicBlock::iterator i = (*b)->begin(), ie = (*b)->end();
i != ie; ++i)
if (isMemRefInstr(i))
memrefs.push_back(i);
}
//===----------------------------------------------------------------------===//
// Dependence Testing
//===----------------------------------------------------------------------===//
@ -71,16 +81,30 @@ void LoopDependenceAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
}
static void PrintLoopInfo(
raw_ostream &OS, const LoopDependenceAnalysis *LDA, const Loop *L) {
raw_ostream &OS, LoopDependenceAnalysis *LDA, const Loop *L) {
if (!L->empty()) return; // ignore non-innermost loops
OS << "Loop at depth " << L->getLoopDepth() << ", header block: ";
WriteAsOperand(OS, L->getHeader(), false);
OS << "\n";
SmallVector<Instruction*, 8> memrefs;
getMemRefInstrs(L, memrefs);
OS << " Load/store instructions: " << memrefs.size() << "\n";
OS << " Pairwise dependence results:\n";
for (SmallVector<Instruction*, 8>::const_iterator x = memrefs.begin(),
end = memrefs.end(); x != end; ++x)
for (SmallVector<Instruction*, 8>::const_iterator y = x + 1;
y != end; ++y)
if (LDA->isDependencePair(*x, *y))
OS << "\t" << (x - memrefs.begin()) << "," << (y - memrefs.begin())
<< ": " << (LDA->depends(*x, *y) ? "dependent" : "independent")
<< "\n";
}
void LoopDependenceAnalysis::print(raw_ostream &OS, const Module*) const {
PrintLoopInfo(OS, this, this->L);
// TODO: doc why const_cast is safe
PrintLoopInfo(OS, const_cast<LoopDependenceAnalysis*>(this), this->L);
}
void LoopDependenceAnalysis::print(std::ostream &OS, const Module *M) const {