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Update some comments noticed in a recent checkin 

llvm-svn: 51644
This commit is contained in:
Nate Begeman 2008-05-28 16:31:36 +00:00
parent e438c56174
commit e993b80ef5
1 changed files with 8 additions and 3 deletions
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11
llvm/lib/Target/IA64/IA64ISelLowering.cpp
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@ -91,12 +91,17 @@ IA64TargetLowering::IA64TargetLowering(TargetMachine &TM)
setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand); setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
setOperationAction(ISD::LABEL, MVT::Other, Expand); setOperationAction(ISD::LABEL, MVT::Other, Expand);
//IA64 has these, but they are not implemented // IA64 has ctlz in the form of the 'fnorm' instruction. The Legalizer
setOperationAction(ISD::CTTZ , MVT::i64 , Expand); // expansion for ctlz/cttz in terms of ctpop is much larger, but lower
// latency.
// FIXME: Custom lower CTLZ when compiling for size?
setOperationAction(ISD::CTLZ , MVT::i64 , Expand); setOperationAction(ISD::CTLZ , MVT::i64 , Expand);
setOperationAction(ISD::CTTZ , MVT::i64 , Expand);
setOperationAction(ISD::ROTL , MVT::i64 , Expand); setOperationAction(ISD::ROTL , MVT::i64 , Expand);
setOperationAction(ISD::ROTR , MVT::i64 , Expand); setOperationAction(ISD::ROTR , MVT::i64 , Expand);
setOperationAction(ISD::BSWAP, MVT::i64 , Expand); // mux @rev
// FIXME: IA64 has this, but is not implemented. should be mux @rev
setOperationAction(ISD::BSWAP, MVT::i64 , Expand);
// VASTART needs to be custom lowered to use the VarArgsFrameIndex // VASTART needs to be custom lowered to use the VarArgsFrameIndex
setOperationAction(ISD::VAARG , MVT::Other, Custom); setOperationAction(ISD::VAARG , MVT::Other, Custom);