convert the new matcher to check intermediate nodes for a single
use and only call IsProfitableToFold/IsLegalToFold on the load
being folded, like the old dagiselemitter does. This
substantially simplifies the code and improves opportunities for
sharing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96368 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/DAGISelMatcherGen.cpp b/utils/TableGen/DAGISelMatcherGen.cpp
index 07ab472..fac5824 100644
--- a/utils/TableGen/DAGISelMatcherGen.cpp
+++ b/utils/TableGen/DAGISelMatcherGen.cpp
@@ -212,9 +212,7 @@
const TreePatternNode *Root = Pattern.getSrcPattern();
if (N != Root && // Not the root of the pattern.
N->TreeHasProperty(SDNPHasChain, CGP)) { // Has a chain somewhere in tree.
-
- AddMatcherNode(new CheckProfitableToFoldMatcherNode());
-
+
// If this non-root node produces a chain, we may need to emit a validity
// check.
if (OpNo != 0) {
@@ -239,7 +237,7 @@
}
if (NeedCheck)
- AddMatcherNode(new CheckLegalToFoldMatcherNode());
+ AddMatcherNode(new CheckFoldableChainNodeMatcherNode());
}
}