Re: [PATCH 06/10] [RISCV] Use constraints/predicates instead of checking const_int directly for shNadd patterns

I know using more precise constraints might result in better code gen in some situations, but I am Curious what's the difference between the using pattern condition and constraints/predicates in this case? Is there any performance or code gen difference? On Fri, Aug 19, 2022 at 6:07 AM apinski---

[PATCH 06/10] [RISCV] Use constraints/predicates instead of checking const_int directly for shNadd patterns

From: Andrew Pinski This simplifies the code by adding a predicate and a constraint for 1/2/3. The aarch64 backend has a similar predicate called aarch64_shift_imm_ which they use there. OK? Built and tested on riscv32-linux-gnu and riscv64-linux-gnu with no regressions. Thanks, Andrew Pinski