PR9055: extend the fix to PR4050 (r70179) to apply to zext and anyext.
Returning a new node makes the code try to replace the old node, which
in the included testcase is killed by CSE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129650 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 378c13b..f427511 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -3884,7 +3884,7 @@
// CombineTo deleted the truncate, if needed, but not what's under it.
AddToWorkList(oye);
}
- return DAG.getNode(ISD::ZERO_EXTEND, N->getDebugLoc(), VT, NarrowLoad);
+ return SDValue(N, 0); // Return N so it doesn't get rechecked!
}
}
@@ -4112,7 +4112,7 @@
// CombineTo deleted the truncate, if needed, but not what's under it.
AddToWorkList(oye);
}
- return DAG.getNode(ISD::ANY_EXTEND, N->getDebugLoc(), VT, NarrowLoad);
+ return SDValue(N, 0); // Return N so it doesn't get rechecked!
}
}