[PATCH] D88658: [AVR] Optimize the 16-bit NEGW pseudo instruction

[Ben Shi via Phabricator via llvm-commits]

benshi001 added inline comments.


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Comment at: llvm/lib/Target/AVR/AVRInstrInfo.td:747
+  // clr Rtmp
+  // sbc Rtmp, Rd+1
+  def NEGWRd : Pseudo<(outs DREGS:$rd),
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aykevl wrote:
> Is this correct? I only see one `neg` while both avr-gcc (https://godbolt.org/z/hETcE9) and the code in AVRExpandPseudoInsts.cpp seem to suggest two `neg` instructions are needed.
This is a previous typo, thanks. Already fixed.


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  https://reviews.llvm.org/D88658/new/

https://reviews.llvm.org/D88658