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Do not try to detect DAG combine patterns for integer multiply-add/sub if value

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type is not i32. MIPS does not have 64-bit integer multiply-add/sub
instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144373 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka 2011-11-11 04:18:21 +00:00
parent 59068067cb
commit e184fec550
1 changed files with 4 additions and 2 deletions
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6
lib/Target/Mips/MipsISelLowering.cpp
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@ -395,7 +395,8 @@ static SDValue PerformADDECombine(SDNode *N, SelectionDAG& DAG,
if (DCI.isBeforeLegalize())
return SDValue();
if (Subtarget->hasMips32() && SelectMadd(N, &DAG))
if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 &&
SelectMadd(N, &DAG))
return SDValue(N, 0);
return SDValue();
@ -407,7 +408,8 @@ static SDValue PerformSUBECombine(SDNode *N, SelectionDAG& DAG,
if (DCI.isBeforeLegalize())
return SDValue();
if (Subtarget->hasMips32() && SelectMsub(N, &DAG))
if (Subtarget->hasMips32() && N->getValueType(0) == MVT::i32 &&
SelectMsub(N, &DAG))
return SDValue(N, 0);
return SDValue();