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[AVR] Don't select 'MOVW' instructions when they are not supported

Authored by dylanmckay on Oct 5 2016, 6:38 AM.

Description

[AVR] Don't select 'MOVW' instructions when they are not supported

We have a subtarget feature which we were ignoring, which was causing us
to generate unsupported instructions for some older chips.

llvm-svn: 283317

Details

Committed
dylanmckayOct 5 2016, 6:38 AM
Parents
rG82ef77091c1d: [AVR] Add AVRRegisterInfo::splitReg function
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