Update some comments noticed in a recent checkin
llvm-svn: 51644
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@ -91,12 +91,17 @@ IA64TargetLowering::IA64TargetLowering(TargetMachine &TM)
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setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
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setOperationAction(ISD::LABEL, MVT::Other, Expand);
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//IA64 has these, but they are not implemented
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setOperationAction(ISD::CTTZ , MVT::i64 , Expand);
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// IA64 has ctlz in the form of the 'fnorm' instruction. The Legalizer
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// expansion for ctlz/cttz in terms of ctpop is much larger, but lower
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// latency.
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// FIXME: Custom lower CTLZ when compiling for size?
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setOperationAction(ISD::CTLZ , MVT::i64 , Expand);
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setOperationAction(ISD::CTTZ , MVT::i64 , Expand);
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setOperationAction(ISD::ROTL , MVT::i64 , Expand);
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setOperationAction(ISD::ROTR , MVT::i64 , Expand);
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setOperationAction(ISD::BSWAP, MVT::i64 , Expand); // mux @rev
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// FIXME: IA64 has this, but is not implemented. should be mux @rev
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setOperationAction(ISD::BSWAP, MVT::i64 , Expand);
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// VASTART needs to be custom lowered to use the VarArgsFrameIndex
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setOperationAction(ISD::VAARG , MVT::Other, Custom);
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