I guess I am missing something here. I've tried the following as Paolo
suggested,
(define_insn "setallocate"
[(unspec_volatile:DI [(match_operand:DI 0 "general_operand" "r")]
UNSPEC_ALLOCATE)]
""
"allocate %0\t\t#TCB_INSTRUCTIONS"
[(set_attr "type" "multi")])
When flag -O0 is on, everything's fine. But when flag -O1 is engaged,
the instruction is still omitted. Something missing ?
Thomas
Paolo Bonzini wrote:
Thomas A.M. Bernard wrote:
I have tried unspec_volatile without success though. As
follow,
(define_insn "setallocate"
[(setallocate
(unspec_volatile:DI [ (match_operand:DI 0 "general_operand"
"r")]
UNSPEC_ALLOCATE)
)]
""
"allocate %0\t\t#TCB_INSTRUCTIONS" [(set_attr "type" "multi")])
This more or less should work, except that it completely subsumes the
SETALLOCATE rtx code that you've added. The pattern should just be
[(unspec_volatile:DI [(match_operand:DI 0 "general_operand" "r")]
UNSPEC_ALLOCATE)]
Paolo
