Restore hasPostISelHook tblgen flag.

No functionality change. The hook makes it explicit which patterns
require "special" handling. i.e. it self-documents tblgen
deficiencies. I plan to add verification in ExpandISelPseudos and
Thumb2SizeReduce to catch any missing hasPostISelHooks. Otherwise it's
too fragile.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140160 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/CodeGenInstruction.cpp b/utils/TableGen/CodeGenInstruction.cpp
index b4f9d15..4b25277 100644
--- a/utils/TableGen/CodeGenInstruction.cpp
+++ b/utils/TableGen/CodeGenInstruction.cpp
@@ -309,6 +309,7 @@
   isReMaterializable = R->getValueAsBit("isReMaterializable");
   hasDelaySlot = R->getValueAsBit("hasDelaySlot");
   usesCustomInserter = R->getValueAsBit("usesCustomInserter");
+  hasPostISelHook = R->getValueAsBit("hasPostISelHook");
   hasCtrlDep   = R->getValueAsBit("hasCtrlDep");
   isNotDuplicable = R->getValueAsBit("isNotDuplicable");
   hasSideEffects = R->getValueAsBit("hasSideEffects");