[LLVMdev] SUBREG instructions and mayLoad/mayStore/etc.
gohman at apple.com
Wed Mar 19 15:23:56 PDT 2008
On Mar 18, 2008, at 6:23 PM, Evan Cheng wrote:
>> This isn't currently being reflected in the InstrInfo tables.
>> Naively, it seems like we should add a separate INSERT_SUBREGrm
>> instruction, and so on, or something like that, in order to be able
>> to have accurate InstrInfo tables. Does anyone familiar with the
>> new subregs infastructure have an opinion on this?
> This is saying the pattern should be isel into two instructions.
> MOV32rm is obviously a load, but INSERT_SUBREG doesn't load or store.
Thanks, this is where I was confused.
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