@@ -18,10 +18,14 @@
;; along with GCC; see the file COPYING3. If not see
;; <http://www.gnu.org/licenses/>.
-;; Use an artifial unit to model FPU.
-(define_cpu_unit "cortex_m4_v" "cortex_m4")
+;; Use two artificial units to model FPU.
+(define_cpu_unit "cortex_m4_v_a" "cortex_m4")
+(define_cpu_unit "cortex_m4_v_b" "cortex_m4")
+(define_reservation "cortex_m4_v" "cortex_m4_v_a+cortex_m4_v_b")
(define_reservation "cortex_m4_ex_v" "cortex_m4_ex+cortex_m4_v")
+(define_reservation "cortex_m4_exa_va" "cortex_m4_a+cortex_m4_v_a")
+(define_reservation "cortex_m4_exb_vb" "cortex_m4_b+cortex_m4_v_b")
;; Integer instructions following VDIV or VSQRT complete out-of-order.
(define_insn_reservation "cortex_m4_fdivs" 15
@@ -44,10 +48,12 @@
(eq_attr "type" "fmuls"))
"cortex_m4_ex_v")
+;; Integer instructions following multiply-accumulate instructions
+;; complete out-of-order.
(define_insn_reservation "cortex_m4_fmacs" 4
(and (eq_attr "tune" "cortexm4")
(eq_attr "type" "fmacs,ffmas"))
- "cortex_m4_ex_v*3")
+ "cortex_m4_ex_v,cortex_m4_v*2")
(define_insn_reservation "cortex_m4_ffariths" 1
(and (eq_attr "tune" "cortexm4")
@@ -77,12 +83,12 @@
(define_insn_reservation "cortex_m4_f_load" 2
(and (eq_attr "tune" "cortexm4")
(eq_attr "type" "f_loads"))
- "cortex_m4_ex_v*2")
+ "cortex_m4_exa_va,cortex_m4_exb_vb")
-(define_insn_reservation "cortex_m4_f_store" 2
+(define_insn_reservation "cortex_m4_f_store" 1
(and (eq_attr "tune" "cortexm4")
(eq_attr "type" "f_stores"))
- "cortex_m4_ex_v*2")
+ "cortex_m4_exa_va")
(define_insn_reservation "cortex_m4_f_loadd" 3
(and (eq_attr "tune" "cortexm4")