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[AArch64] Adjust generic move costs

Message ID 000201d00405$b47309d0$1d591d70$@com
State New
Headers show

Commit Message

Wilco Nov. 19, 2014, 2:32 p.m. UTC 
Hi Jiong,

Can you commit this please?

2014-11-19  Wilco Dijkstra  <wdijkstr@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(-)

Comments

Marcus Shawcroft Nov. 19, 2014, 3:56 p.m. UTC | #1 
On 19 November 2014 14:32, Wilco Dijkstra <wdijkstr@arm.com> wrote:
> Hi Jiong,
>
> Can you commit this please?
>
> 2014-11-19  Wilco Dijkstra  <wdijkstr@arm.com>
>
>         * gcc/config/aarch64/aarch64.c (generic_regmove_cost):
>         Increase FP move cost (PR61915).
>

Use the proper format for referring to PR's in the Changelog.

/M
diff mbox

Patch

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)
 };