Re: [PATCH] RISC-V: Optimize branches testing a bit-range or a shifted immediate

[Jeff Law via Gcc-patches]

On 11/8/22 13:46, Philipp Tomsich wrote:
gcc/ChangeLog:

        * config/riscv/predicates.md (shifted_const_arith_operand):
        (uimm_extra_bit_operand):
        * config/riscv/riscv.md (*branch<ANYI:mode>_shiftedarith_equals_zero):
        (*branch<ANYI:mode>_shiftedmask_equals_zero):

gcc/testsuite/ChangeLog:

        * gcc.target/riscv/branch-1.c: New test.

Nice...    It seems so obvious, but I'm not offhand aware of other ports 
doing this, though many could likely benefit.

OK


jeff