implement a simple proof-of-concept optimization for

the new isel: fold movechild+record+moveparent into a
single recordchild N node.  This shrinks the X86 table
from 125443 to 117502 bytes.

llvm-svn: 97031

1 files changed, 7 insertions, 0 deletions

diff --git a/llvm/utils/TableGen/DAGISelMatcherEmitter.cpp b/llvm/utils/TableGen/DAGISelMatcherEmitter.cpp
index ecc75c8c4c6..e78be79119d 100644
--- a/llvm/utils/TableGen/DAGISelMatcherEmitter.cpp
+++ b/llvm/utils/TableGen/DAGISelMatcherEmitter.cpp
@@ -159,6 +159,13 @@ EmitMatcher(const MatcherNode *N, unsigned Indent, formatted_raw_ostream &OS) {
     OS.PadToColumn(CommentIndent) << "// "
        << cast<RecordMatcherNode>(N)->getWhatFor() << '\n';
     return 1;
+
+  case MatcherNode::RecordChild:
+    OS << "OPC_RecordChild" << cast<RecordChildMatcherNode>(N)->getChildNo()
+       << ',';
+    OS.PadToColumn(CommentIndent) << "// "
+      << cast<RecordChildMatcherNode>(N)->getWhatFor() << '\n';
+    return 1;
       
   case MatcherNode::RecordMemRef:
     OS << "OPC_RecordMemRef,\n";