@@ -18,18 +18,38 @@
;; along with GCC; see the file COPYING3. If not see
;; <http://www.gnu.org/licenses/>.
-(define_predicate "rl78_any_operand"
+(define_predicate "rl78_volatile_memory_operand"
+ (and (match_code "mem")
+ (match_test ("memory_address_addr_space_p (GET_MODE (op), XEXP
(op, 0), MEM_ADDR_SPACE (op))")))
+)
+
+; TRUE for any valid general operand. We do this because
+; general_operand refuses to match volatile memory refs.
+
+(define_predicate "rl78_general_operand"
(ior (match_operand 0 "general_operand")
+ (match_operand 0 "rl78_volatile_memory_operand"))
+)
+
+; Likewise for nonimmediate_operand.
+
+(define_predicate "rl78_nonimmediate_operand"
+ (ior (match_operand 0 "nonimmediate_operand")
+ (match_operand 0 "rl78_volatile_memory_operand"))
+)
+
+(define_predicate "rl78_any_operand"
+ (ior (match_operand 0 "rl78_general_operand")
(match_code "mem,const_int,const_double,reg"))
)
(define_predicate "rl78_nonfar_operand"
- (and (match_operand 0 "general_operand")
+ (and (match_operand 0 "rl78_general_operand")
(not (match_test "rl78_far_p (op)")))
)
(define_predicate "rl78_nonfar_nonimm_operand"
- (and (match_operand 0 "nonimmediate_operand")
+ (and (match_operand 0 "rl78_nonimmediate_operand")
(not (match_test "rl78_far_p (op)")))
)
Hi, This patch adds predicates (taken and renamed from the MSP430 backend) to allow more efficient code generation when accessing volatile memory turning this (for example): movw r10, #240 movw ax, r10 movw hl, ax mov a, [hl] or a, #32 mov [hl], a into this: mov a, !240 or a, #32 mov !240, a Regards, Richard. 2014-04-18 Richard Hulme <peper03@yahoo.com> * config/rl78/predicates.md (rl78_volatile_memory_operand): New (rl78_general_operand): New (rl78_nonimmediate_operand): New (rl78_any_operand): Now includes volatile memory (rl78_nonfar_operand): Likewise (rl78_nonfar_nonimm_operand): Likewise --- gcc/config/rl78/predicates.md | 26 +++++++++++++++++++++++--- 1 file changed, 23 insertions(+), 3 deletions(-)