CM7: More ldm/stm uArch

* don't dual issue with anything
* Adjust inverse throughput

Author: dop-amin

slothy/targets/arm_v7m/cortex_m7.py

@@ -124,7 +124,7 @@ def get_min_max_objective(slothy):
         Ldrd,
         ldm_interval,
         ldm_interval_inc_writeback,
-        vldm_interval_inc_writeback): [[ExecutionUnit.LOAD0, ExecutionUnit.LOAD1]],
+        vldm_interval_inc_writeback): [[ExecutionUnit.LOAD0, ExecutionUnit.LOAD1, ExecutionUnit.ALU0, ExecutionUnit.ALU1, ExecutionUnit.MAC, ExecutionUnit.FPU, ExecutionUnit.STORE, ExecutionUnit.SIMD]],
     (
         str_with_imm,
         str_with_imm_stack,
@@ -364,6 +364,6 @@ def evaluate_immediate(string_expr):
 def get_inverse_throughput(src):
     itp = lookup_multidict(inverse_throughput, src)
     if find_class(src) in [ldm_interval, ldm_interval_inc_writeback, stm_interval_inc_writeback, vldm_interval_inc_writeback]:
-        itp = src.num_out
+        itp = ceil(src.num_out/2)
 
     return itp