On Tue, Aug 23, 2011 at 10:04 PM, Richard Henderson <r...@redhat.com> wrote:
>> * config/i386/constraints.md (Yp): New register constraint. >> * config/i386/i386.md (*addhi_1): Merge with *addhi_1_lea using >> Yp register constraint. >> (*addqi_1): Merge with *addqi_1_lea using Yp register constraint. >> (*ashlhi3_1): Merge with *ashlhi3_1_lea using Yp register constraint. >> (*ashlqi3_1): Merge with *ashlqi3_1_lea using Yp register constraint. > > You can still make use of attribute enabled... Yes, I am aware of this attribute, but OTOH, I propose that we use it for ISA changes and don't mix everything together. I was thinking of moving Y2, Y3 and Y4 out of register constraints to "enabled" attribute, but they clashed with TARGET_AVX somehow. So, at the end of the day, it was much easier to leave pre-AVX register constraints as they were, while post-AVX and AVX-independent ISAs should be handled via "enabled" attribute. Uros.
