[gcc(refs/users/marxin/heads/marxin-gcc-benchmark-branch)] [AArch64] Set jump-align=4 for neoversen1

[Martin Liska]

https://gcc.gnu.org/g:3a43459715e239fb8043bf64b830aaf1a9802180

commit 3a43459715e239fb8043bf64b830aaf1a9802180
Author: Wilco Dijkstra <wdijkstr@arm.com>
Date:   Mon Jan 20 14:29:40 2020 +0000

    [AArch64] Set jump-align=4 for neoversen1
    
    Testing shows the setting of 32:16 for jump alignment has a significant
    codesize cost, however it doesn't make a difference in performance.
    So set jump-align to 4 to get 1.6% codesize improvement.
    
    gcc/
            * config/aarch64/aarch64.c (neoversen1_tunings): Set jump_align to 4.

Diff:
---
 gcc/ChangeLog                | 4 ++++
 gcc/config/aarch64/aarch64.c | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8db7c816622..31b7305b5f4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2020-01-20  Wilco Dijkstra  <wdijkstr@arm.com>
+
+	* config/aarch64/aarch64.c (neoversen1_tunings): Set jump_align to 4.
+
 2020-01-20  Andrew Pinski  <apinski@marvell.com>
 
 	PR middle-end/93242
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index c26ac0db942..e40750380cc 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -1132,7 +1132,7 @@ static const struct tune_params neoversen1_tunings =
   3, /* issue_rate  */
   (AARCH64_FUSE_AES_AESMC | AARCH64_FUSE_CMP_BRANCH), /* fusible_ops  */
   "32:16",	/* function_align.  */
-  "32:16",	/* jump_align.  */
+  "4",		/* jump_align.  */
   "32:16",	/* loop_align.  */
   2,	/* int_reassoc_width.  */
   4,	/* fp_reassoc_width.  */