RE: [PATCH][AArch64] Adjust generic move costs

[Wilco Dijkstra]

Hi Jiong,

Can you commit this please?

2014-11-19  Wilco Dijkstra  <wdijk...@arm.com>

        * gcc/config/aarch64/aarch64.c (generic_regmove_cost):
        Increase FP move cost (PR61915).


---
 gcc/config/aarch64/aarch64.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index de53c94..cd30724 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -218,8 +218,10 @@ __extension__
 static const struct cpu_regmove_cost generic_regmove_cost =
 {
   NAMED_PARAM (GP2GP, 1),
-  NAMED_PARAM (GP2FP, 2),
-  NAMED_PARAM (FP2GP, 2),
+  /* Avoid the use of slow int<->fp moves for spilling by setting
+     their cost higher than memmov_cost.  */
+  NAMED_PARAM (GP2FP, 5),
+  NAMED_PARAM (FP2GP, 5),
   NAMED_PARAM (FP2FP, 2)
 };
 
-- 
1.9.1