Hi, Richard.
Here is an example for vsext.vf2.
The general pattern for this instruction as follows:
(set (operand 0) (unspec:...(operand 1)))
We have a TARGET_MIN_VLEN macro which specify minimum VLEN according to -march
Consider this case V16QI -> V16HI of vsext.vf2
When TARGET_MIN_VLEN ==
Hi, Richard.
Current define_mode_attr can only map an attribute for a mode.
I wonder whether we can map a mode to multiple attributes ?
E.g. (define_mode_attr dest_constraint [(V16QI "&vr")])
But I want it to be:
(define_mode_attr dest_constraint [(V16QI (TARGET_MIN_VLEN <= 128 "vr")
(TARGET_M
