[PATCH] Adjust variable shift costs for IA MCU

[H.J. Lu]

We reduce code size for IA MCU by adjusting variable shift costs for IA
MCU.  OK for trunk?

Thanks.


H.J.
---
        PR target/66821
        * config/i386/i386.c (iamcu_cost): Adjust variable shift costs.
---
 gcc/config/i386/i386.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 85e59a8..e4e505c 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -420,7 +420,7 @@ static const
 struct processor_costs iamcu_cost = {
   COSTS_N_INSNS (1),                   /* cost of an add instruction */
   COSTS_N_INSNS (1) + 1,               /* cost of a lea instruction */
-  COSTS_N_INSNS (4),                   /* variable shift costs */
+  COSTS_N_INSNS (1),                   /* variable shift costs */
   COSTS_N_INSNS (1),                   /* constant shift costs */
   {COSTS_N_INSNS (11),                 /* cost of starting multiply for QI */
    COSTS_N_INSNS (11),                 /*                               HI */
-- 
2.4.3