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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/InstrInfoEmitter.cpp
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@@ -240,6 +240,7 @@ void InstrInfoEmitter::emitRecord(const CodeGenInstruction &Inst, unsigned Num,
if (Inst.isConvertibleToThreeAddress) OS << "|M_CONVERTIBLE_TO_3_ADDR";
if (Inst.isCommutable) OS << "|M_COMMUTABLE";
if (Inst.isTerminator) OS << "|M_TERMINATOR_FLAG";
if (Inst.isReMaterializable) OS << "|M_REMATERIALIZIBLE";
if (Inst.clobbersPred) OS << "|M_CLOBBERS_PRED";
if (Inst.isNotDuplicable) OS << "|M_NOT_DUPLICABLE";
if (Inst.usesCustomDAGSchedInserter)