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Emit the switch stmt cases in alphabetical order instead of pointer order,

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which is not stable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23456 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-09-26 21:59:35 +00:00
parent e6b90fba4a
commit 3748147aaf
1 changed files with 19 additions and 4 deletions
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23
utils/TableGen/DAGISelEmitter.cpp
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@ -1200,6 +1200,20 @@ struct PatternSortingPredicate {
}
};
namespace {
/// CompareByRecordName - An ordering predicate that implements less-than by
/// comparing the names records.
struct CompareByRecordName {
bool operator()(const Record *LHS, const Record *RHS) const {
// Sort by name first.
if (LHS->getName() < RHS->getName()) return true;
// If both names are equal, sort by pointer.
return LHS->getName() == RHS->getName() && LHS < RHS;
}
};
}
void DAGISelEmitter::EmitInstructionSelector(std::ostream &OS) {
// Emit boilerplate.
OS << "// The main instruction selector code.\n"
@ -1220,15 +1234,16 @@ void DAGISelEmitter::EmitInstructionSelector(std::ostream &OS) {
<< " return Select(N.getOperand(0));\n";
// Group the patterns by their top-level opcodes.
std::map<Record*, std::vector<PatternToMatch*> > PatternsByOpcode;
std::map<Record*, std::vector<PatternToMatch*>,
CompareByRecordName> PatternsByOpcode;
for (unsigned i = 0, e = PatternsToMatch.size(); i != e; ++i)
PatternsByOpcode[PatternsToMatch[i].first->getOperator()]
.push_back(&PatternsToMatch[i]);
// Loop over all of the case statements.
for (std::map<Record*, std::vector<PatternToMatch*> >::iterator
PBOI = PatternsByOpcode.begin(), E = PatternsByOpcode.end(); PBOI != E;
++PBOI) {
for (std::map<Record*, std::vector<PatternToMatch*>,
CompareByRecordName>::iterator PBOI = PatternsByOpcode.begin(),
E = PatternsByOpcode.end(); PBOI != E; ++PBOI) {
const SDNodeInfo &OpcodeInfo = getSDNodeInfo(PBOI->first);
std::vector<PatternToMatch*> &Patterns = PBOI->second;