Hi Jakub,
I had a question about the aforementioned commit in RV backend.
(define_split
[(set (match_operand:GPR 0 "register_operand")
(and:GPR (match_operand:GPR 1 "register_operand")
(match_operand:GPR 2 "p2m1_shift_operand")))
+ (clobber (match_operand:GPR 3 "register_operand"))]
""
- [(set (match_dup 0)
+ [(set (match_dup 3)
(ashift:GPR (match_dup 1) (match_dup 2)))
Is there something specific to this split which warrants this or so any
split patterns involving shifts have this to avoid the shifting by more
than SUBREG_REG problem.
Also could you please explain where the clobber itself is allocated ?
This came up when discussing the solution to PR/106602 [1]
Thx,
-Vineet
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106602
