[PATCH] D157373: [RISCV] add a compress optimization for stack inst.

[lcvon via Phabricator via llvm-commits]

lcvon007 added a comment.

It seems that compiler doesn't generate the best code, and it can generate addi a0, a0, -256 like addi a0, a0, -2032, but it generates li a0, 31, slli a0, a0, 8 => 31 <<  8 = 2 * 4096 -256, so I think threre is another optimization point here @wangpc


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D157373/new/

https://reviews.llvm.org/D157373