[PATCH] [AArch64, Falkor] Falkor address costs tuning

[Luis Machado]

Switch from using generic address costs to using Falkor-specific ones, which
give Falkor better results overall.

OK for trunk?

Given this is a Falkor-specific adjustment, would this be an acceptable
backport for GCC 8 as well?

gcc/ChangeLog:

2018-05-22  Luis Machado  <luis.machado@linaro.org>

	* config/aarch64/aarch64.c (qdf24xx_addrcost_table): New static
	global.
	(qdf24xx_tunings) <addr_costs>: Set to qdf24xx_addrcost_table.
---
 gcc/config/aarch64/aarch64.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index f60e0ad..548d87a 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -314,6 +314,22 @@ static const struct cpu_addrcost_table thunderx2t99_addrcost_table =
   0, /* imm_offset  */
 };
 
+static const struct cpu_addrcost_table qdf24xx_addrcost_table =
+{
+    {
+      1, /* hi  */
+      1, /* si  */
+      1, /* di  */
+      2, /* ti  */
+    },
+  1, /* pre_modify  */
+  1, /* post_modify  */
+  3, /* register_offset  */
+  4, /* register_sextend  */
+  3, /* register_zextend  */
+  2, /* imm_offset  */
+};
+
 static const struct cpu_regmove_cost generic_regmove_cost =
 {
   1, /* GP2GP  */
@@ -856,7 +872,7 @@ static const struct tune_params xgene1_tunings =
 static const struct tune_params qdf24xx_tunings =
 {
   &qdf24xx_extra_costs,
-  &generic_addrcost_table,
+  &qdf24xx_addrcost_table,
   &qdf24xx_regmove_cost,
   &generic_vector_cost,
   &generic_branch_cost,
-- 
2.7.4