From: Wilco Dijkstra <wilco.dijkstra@arm.com>
Date: Thu, 26 Jun 2025 15:41:06 +0000 (+0000)
Subject: AArch64: Use correct cost for shifted halfword load/stores
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=731649066f0fd2e2b2fbfd8668e001c3e91290d6;p=thirdparty%2Fgcc.git

AArch64: Use correct cost for shifted halfword load/stores

Since all Armv9 cores support shifted LDRH/STRH, use the correct cost of zero
for these.

gcc:
	* config/aarch64/tuning_models/generic_armv9_a.h
	(generic_armv9_a_addrcost_table): Use zero cost for himode.
---

diff --git a/gcc/config/aarch64/tuning_models/generic_armv9_a.h b/gcc/config/aarch64/tuning_models/generic_armv9_a.h
index f76a2506f38..9eb1a20d3c4 100644
--- a/gcc/config/aarch64/tuning_models/generic_armv9_a.h
+++ b/gcc/config/aarch64/tuning_models/generic_armv9_a.h
@@ -26,7 +26,7 @@
 static const struct cpu_addrcost_table generic_armv9_a_addrcost_table =
 {
     {
-      1, /* hi  */
+      0, /* hi  */
       0, /* si  */
       0, /* di  */
       1, /* ti  */