[PATCH] D132939: [TwoAddressInstruction] rewrite INSERT_SUBREG to SUBREG_TO_REG if upper bits zero
Allen zhong via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Aug 30 08:06:36 PDT 2022
Allen added a comment.
In D132939#3758406 <https://reviews.llvm.org/D132939#3758406>, @foad wrote:
> Where do you actually check that the upper bits are zero?
hi @foad , thanks for you attention, maybe I have some misunderstand. I try this refer to **AArch64MIPeepholeOpt::visitORR** in file AArch64MIPeepholeOpt.cpp.
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https://reviews.llvm.org/D132939/new/
https://reviews.llvm.org/D132939
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