From: Ramiro Polla <ramiro.polla@gmail.com>
To: ffmpeg-devel@ffmpeg.org
Subject: [FFmpeg-devel] [PATCH] aarch64: increase default alignment for functions and constants
Date: Fri, 16 May 2025 01:05:57 +0200
Message-ID: <20250515230557.22448-1-ramiro.polla@gmail.com> (raw)
Use 16-byte alignment (align=4) instead of 4-byte (align=2) in the function and
const macros. This improves instruction fetch and NEON load performance on
modern AArch64 CPUs.
---
libavutil/aarch64/asm.S | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavutil/aarch64/asm.S b/libavutil/aarch64/asm.S
index 50ce7d4dfd..2e4e451ec2 100644
--- a/libavutil/aarch64/asm.S
+++ b/libavutil/aarch64/asm.S
@@ -196,7 +196,7 @@ DISABLE_SVE2
.popsection
#endif
-.macro function name, export=0, align=2
+.macro function name, export=0, align=4
.macro endfunc
ELF .size \name, . - \name
FUNC .endfunc
@@ -217,7 +217,7 @@ FUNC .func \name
.endif
.endm
-.macro const name, align=2, relocate=0
+.macro const name, align=4, relocate=0
.macro endconst
ELF .size \name, . - \name
.purgem endconst
--
2.39.5
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next reply other threads:[~2025-05-15 23:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-15 23:05 Ramiro Polla [this message]
2025-05-16 6:03 ` Martin Storsjö
2025-05-19 11:22 ` Ramiro Polla
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