[all-commits] [llvm/llvm-project] 5341d5: [RISCV] Combine (and (select cond, x, -1), c) to (...
Yeting Kuo via All-commits
all-commits at lists.llvm.org
Thu Oct 19 01:11:26 PDT 2023
Branch: refs/heads/main
Home: https://github.com/llvm/llvm-project
Commit: 5341d5465dbf0b35c64c54f200af8389a8b76aef
https://github.com/llvm/llvm-project/commit/5341d5465dbf0b35c64c54f200af8389a8b76aef
Author: Yeting Kuo <46629943+yetingk at users.noreply.github.com>
Date: 2023-10-19 (Thu, 19 Oct 2023)
Changed paths:
M llvm/lib/Target/RISCV/RISCVISelLowering.cpp
M llvm/test/CodeGen/RISCV/select-binop-identity.ll
Log Message:
-----------
[RISCV] Combine (and (select cond, x, -1), c) to (select cond, x, (and x, c)) with Zicond. (#69563)
It's only beneficial when cond is setcc with integer equality condition
code. For other case, it has same instruction count as the original.
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