release/18.x: [AVR] Remove earlyclobber from LDDRdPtrQ (#85277) #85512
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LDDRdPtrQ was marked as `earlyclobber`, which doesn't play well with GreedyRA (which can generate this instruction through `loadRegFromStackSlot()`). This seems to be the same case as: https://github.com/llvm/llvm-project/blob/a99b912c9b74f6ef91786b4dfbc25160c27d3b41/llvm/lib/Target/AVR/AVRInstrInfo.td#L1421 Closes llvm#81911. (cherry picked from commit 328cb9b)
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@benshi001 What do you think about merging this PR to the release branch? |
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Yes. I think so. Because this is a bug fix. |
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Backport 328cb9b
Requested by: @brad0