Adjust Falkor's register_sextend cost from 4 to 3. This fixes a testsuite
failure in gcc.target/aarch64/extend.c:ldr_sxtw where GCC was generating
a sbfiz instruction rather than a load with sign extension.
No performance changes.
gcc/ChangeLog:
2018-07-25 Luis Machado <luis.mach...@linaro.org>
* config/aarch64/aarch64.c (qdf24xx_addrcost_table)
<register_sextend>: Set to 3.
---
gcc/config/aarch64/aarch64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index fa01475..ea39272 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -329,7 +329,7 @@ static const struct cpu_addrcost_table
qdf24xx_addrcost_table =
1, /* pre_modify */
1, /* post_modify */
3, /* register_offset */
- 4, /* register_sextend */
+ 3, /* register_sextend */
3, /* register_zextend */
2, /* imm_offset */
};
--
2.7.4
