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Revert a portion of r253836 that seems to have broke a couple bots. 

llvm-svn: 253838
This commit is contained in:
Craig Topper 2015-11-22 22:43:40 +00:00
parent 0194743fad
commit 2f70a7ef57
1 changed files with 14 additions and 11 deletions
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25
llvm/utils/TableGen/CodeGenDAGPatterns.cpp
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@ -3715,14 +3715,14 @@ void CodeGenDAGPatterns::GenerateVariants() {
// intentionally do not reconsider these. Any variants of added patterns have
// already been added.
//
for (PatternToMatch &PTM : PatternsToMatch) {
for (unsigned i = 0, e = PatternsToMatch.size(); i != e; ++i) {
MultipleUseVarSet DepVars;
std::vector<TreePatternNode*> Variants;
FindDepVars(PTM.getSrcPattern(), DepVars);
FindDepVars(PatternsToMatch[i].getSrcPattern(), DepVars);
DEBUG(errs() << "Dependent/multiply used variables: ");
DEBUG(DumpDepVars(DepVars));
DEBUG(errs() << "\n");
GenerateVariantsOf(PTM.getSrcPattern(), Variants, *this,
GenerateVariantsOf(PatternsToMatch[i].getSrcPattern(), Variants, *this,
DepVars);
assert(!Variants.empty() && "Must create at least original variant!");
@ -3732,7 +3732,7 @@ void CodeGenDAGPatterns::GenerateVariants() {
continue;
DEBUG(errs() << "FOUND VARIANTS OF: ";
PTM.getSrcPattern()->dump();
PatternsToMatch[i].getSrcPattern()->dump();
errs() << "\n");
for (unsigned v = 0, e = Variants.size(); v != e; ++v) {
@ -3744,12 +3744,14 @@ void CodeGenDAGPatterns::GenerateVariants() {
// Scan to see if an instruction or explicit pattern already matches this.
bool AlreadyExists = false;
for (PatternToMatch &OtherPTM : PatternsToMatch) {
for (unsigned p = 0, e = PatternsToMatch.size(); p != e; ++p) {
// Skip if the top level predicates do not match.
if (PTM.getPredicates() != OtherPTM.getPredicates())
if (PatternsToMatch[i].getPredicates() !=
PatternsToMatch[p].getPredicates())
continue;
// Check to see if this variant already exists.
if (Variant->isIsomorphicTo(OtherPTM.getSrcPattern(), DepVars)) {
if (Variant->isIsomorphicTo(PatternsToMatch[p].getSrcPattern(),
DepVars)) {
DEBUG(errs() << " *** ALREADY EXISTS, ignoring variant.\n");
AlreadyExists = true;
break;
@ -3759,10 +3761,11 @@ void CodeGenDAGPatterns::GenerateVariants() {
if (AlreadyExists) continue;
// Otherwise, add it to the list of patterns we have.
PatternsToMatch.emplace_back(PTM.getSrcRecord(), PTM.getPredicates(),
Variant, PTM.getDstPattern(),
PTM.getDstRegs(), PTM.getAddedComplexity(),
Record::getNewUID());
PatternsToMatch.emplace_back(
PatternsToMatch[i].getSrcRecord(), PatternsToMatch[i].getPredicates(),
Variant, PatternsToMatch[i].getDstPattern(),
PatternsToMatch[i].getDstRegs(),
PatternsToMatch[i].getAddedComplexity(), Record::getNewUID());
}
DEBUG(errs() << "\n");