[PATCH] D124836: [AArch64] Add support for -fzero-call-used-regs

[Bill Wendling via Phabricator via llvm-commits]

void added a comment.

@peterwaller-arm @sdesmalen Could you comment on what is considered the canonical way to zero Arm registers? Is `mov x1, #0` the way or `mov x1, xzr` or some other way?


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https://reviews.llvm.org/D124836