Revert the earlier change that removed the M_REMATERIALIZABLE machine
instruction flag, and use the flag along with a virtual member function
hook for targets to override if there are instructions that are only
trivially rematerializable with specific operands (i.e. constant pool
loads).
llvm-svn: 37728
diff --git a/llvm/utils/TableGen/CodeGenTarget.cpp b/llvm/utils/TableGen/CodeGenTarget.cpp
index b02c423..c54ecd0 100644
--- a/llvm/utils/TableGen/CodeGenTarget.cpp
+++ b/llvm/utils/TableGen/CodeGenTarget.cpp
@@ -365,6 +365,7 @@
isConvertibleToThreeAddress = R->getValueAsBit("isConvertibleToThreeAddress");
isCommutable = R->getValueAsBit("isCommutable");
isTerminator = R->getValueAsBit("isTerminator");
+ isReMaterializable = R->getValueAsBit("isReMaterializable");
hasDelaySlot = R->getValueAsBit("hasDelaySlot");
usesCustomDAGSchedInserter = R->getValueAsBit("usesCustomDAGSchedInserter");
hasCtrlDep = R->getValueAsBit("hasCtrlDep");