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R600/SI: Move i64 -> v2i32 load promotion into AMDGPUDAGToDAGISel::Select()

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We used to do this promotion during DAG legalization, but this
caused an infinite loop in ExpandUnalignedLoad() because it assumed
that i64 loads were legal if i64 was a legal type.

It also seems better to report i64 loads as legal, since they actually
are and we were just promoting them to simplify our tablegen files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226945 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tom Stellard
2015-01-23 22:05:45 +00:00
parent b5ef83de33
commit 511a3c71fc
3 changed files with 40 additions and 3 deletions
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3
lib/Target/R600/AMDGPUISelLowering.cpp
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@@ -189,9 +189,6 @@ AMDGPUTargetLowering::AMDGPUTargetLowering(TargetMachine &TM) :
setOperationAction(ISD::LOAD, MVT::v2f32, Promote);
AddPromotedToType(ISD::LOAD, MVT::v2f32, MVT::v2i32);
setOperationAction(ISD::LOAD, MVT::i64, Promote);
AddPromotedToType(ISD::LOAD, MVT::i64, MVT::v2i32);
setOperationAction(ISD::LOAD, MVT::v4f32, Promote);
AddPromotedToType(ISD::LOAD, MVT::v4f32, MVT::v4i32);