diff options
| -rw-r--r-- | utils/TableGen/DAGISelEmitter.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/utils/TableGen/DAGISelEmitter.cpp b/utils/TableGen/DAGISelEmitter.cpp index c384f53623..f0ecd66fb2 100644 --- a/utils/TableGen/DAGISelEmitter.cpp +++ b/utils/TableGen/DAGISelEmitter.cpp @@ -1709,6 +1709,10 @@ static unsigned getPatternSize(TreePatternNode *P, DAGISelEmitter &ISE) { P->getExtTypeNum(0) == MVT::Flag && "Not a valid pattern node to size!"); unsigned Size = 2; // The node itself. + // If the root node is a ConstantSDNode, increases its size. + // e.g. (set R32:$dst, 0). + if (P->isLeaf() && dynamic_cast<IntInit*>(P->getLeafValue())) + Size++; // FIXME: This is a hack to statically increase the priority of patterns // which maps a sub-dag to a complex pattern. e.g. favors LEA over ADD. |