[llvm-dev] A strange question about Couldn't find class

[沈天豪 via llvm-dev]

Hi,every one.

I have a strange problem，which suddenly appears.
In src/lib/Target/X86/X86InstrInfo.td，I add a Pseudo using class PseudoI.
when compile llvm, there is a error :error: Couldn't find class 'PseudoI'
???
But in X86InstrInfo.td, there are other Pseudo instructions which difined using class 'PseudoI'.
And in anthoer ubuntu ,I do the same without error.
why?How should I do ?

Thans a lot.
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