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Allow types to be omitted in output patterns.

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This syntax is now preferred:

  def : Pat<(subc i32:$b, i32:$c), (SUBCCrr $b, $c)>;

There is no reason to repeat the types in the output pattern.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177844 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2013-03-24 19:37:00 +00:00
parent 4717fd4c0f
commit 8e3cb3ee0c
2 changed files with 16 additions and 0 deletions
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10
utils/TableGen/CodeGenDAGPatterns.cpp
View File

@ -1866,6 +1866,16 @@ TreePatternNode *TreePattern::ParseTreePattern(Init *TheInit, StringRef OpName){
return Res;
}
// ?:$name or just $name.
if (TheInit == UnsetInit::get()) {
if (OpName.empty())
error("'?' argument requires a name to match with operand list");
TreePatternNode *Res = new TreePatternNode(TheInit, 1);
Args.push_back(OpName);
Res->setName(OpName);
return Res;
}
if (IntInit *II = dyn_cast<IntInit>(TheInit)) {
if (!OpName.empty())
error("Constant int argument should not have a name!");

6
utils/TableGen/DAGISelMatcherGen.cpp
View File

@ -211,6 +211,12 @@ void MatcherGen::EmitLeafMatchCode(const TreePatternNode *N) {
return AddMatcher(new CheckIntegerMatcher(II->getValue()));
}
// An UnsetInit represents a named node without any constraints.
if (N->getLeafValue() == UnsetInit::get()) {
assert(N->hasName() && "Unnamed ? leaf");
return;
}
DefInit *DI = dyn_cast<DefInit>(N->getLeafValue());
if (DI == 0) {
errs() << "Unknown leaf kind: " << *N << "\n";