[llvm-commits] [llvm] r46727 - /llvm/trunk/include/llvm/IntrinsicsX86.td

[Chris Lattner]

On Feb 5, 2008, at 11:37 AM, Evan Cheng wrote:

>> That means you have to know whether you've got SSE4.1 in the FE.
>> This is not an insuperable obstacle, but I think it's better to leave
>> target
>> dependencies in the BE when possible.
>
> Even with SSE4.1, it's a good idea to lower them to extract element
> instructions. X86ISelLoweringhas all the information necessary to
> determine what instructions to they should be selected to.

Do you mean 'even without SSE4.1'?

-Chris