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Revert the earlier change that removed the M_REMATERIALIZABLE machine

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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).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37728 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2007-06-26 00:48:07 +00:00
parent 9a0930dbd9
commit d45eddd214
15 changed files with 57 additions and 48 deletions
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utils/TableGen/CodeGenTarget.cpp
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@@ -365,6 +365,7 @@ CodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr)
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");