On 11/10/22 14:36, Philipp Tomsich wrote:
Add a split for cases where we can use two bclri (or one bclri and an
andi) to clear two bits.
gcc/ChangeLog:
* config/riscv/bitmanip.md (*bclri<mode>_nottwobits): New pattern.
(*bclridisi_nottwobits): New pattern, handling the sign-bit.
* config/riscv/predicates.md (const_nottwobits_operand):
New predicate.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/zbs-bclri.c: New test.
Don't we only have to worry about (subreg:DI (reg:SI )) to preserve the
extension constraints? Not that I think there's any value in allowing
HI/QI, mostly wanting to double check my understanding of the extension
constraints.
OK
jeff
