diff options
Diffstat (limited to 'utils/TableGen/CodeGenDAGPatterns.cpp')
| -rw-r--r-- | utils/TableGen/CodeGenDAGPatterns.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/utils/TableGen/CodeGenDAGPatterns.cpp b/utils/TableGen/CodeGenDAGPatterns.cpp index 09c00dd..34f8a34 100644 --- a/utils/TableGen/CodeGenDAGPatterns.cpp +++ b/utils/TableGen/CodeGenDAGPatterns.cpp @@ -2908,6 +2908,11 @@ void CodeGenDAGPatterns::ParsePatterns() { for (unsigned i = 0, e = Patterns.size(); i != e; ++i) { Record *CurPattern = Patterns[i]; DagInit *Tree = CurPattern->getValueAsDag("PatternToMatch"); + + // If the pattern references the null_frag, there's nothing to do. + if (hasNullFragReference(Tree)) + continue; + TreePattern *Pattern = new TreePattern(CurPattern, Tree, true, *this); // Inline pattern fragments into it. |