The new isel was not properly handling patterns that covered

internal nodes with flag results.  Record these with a new 
OPC_MarkFlagResults opcode and use this to update the interior
nodes' flag results properly.  This fixes CodeGen/X86/i256-add.ll
with the new isel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97021 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 0 deletions

diff --git a/utils/TableGen/DAGISelMatcherEmitter.cpp b/utils/TableGen/DAGISelMatcherEmitter.cpp
index c316950..ecc75c8 100644
--- a/utils/TableGen/DAGISelMatcherEmitter.cpp
+++ b/utils/TableGen/DAGISelMatcherEmitter.cpp
@@ -337,6 +337,15 @@ EmitMatcher(const MatcherNode *N, unsigned Indent, formatted_raw_ostream &OS) {
     OS << '\n';
     return 6+EN->getNumVTs()+NumOperandBytes;
   }
+  case MatcherNode::MarkFlagResults: {
+    const MarkFlagResultsMatcherNode *CFR = cast<MarkFlagResultsMatcherNode>(N);
+    OS << "OPC_MarkFlagResults, " << CFR->getNumNodes() << ", ";
+    unsigned NumOperandBytes = 0;
+    for (unsigned i = 0, e = CFR->getNumNodes(); i != e; ++i)
+      NumOperandBytes += EmitVBRValue(CFR->getNode(i), OS);
+    OS << '\n';
+    return 2+NumOperandBytes;
+  }
   case MatcherNode::CompleteMatch: {
     const CompleteMatchMatcherNode *CM = cast<CompleteMatchMatcherNode>(N);
     OS << "OPC_CompleteMatch, " << CM->getNumResults() << ", ";