From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
To: libc-alpha@sourceware.org
Subject: [PATCH] math: x86: Use prefix for FP_INIT_ROUNDMODE
Date: Thu, 1 Sep 2022 10:02:53 -0300 [thread overview]
Message-ID: <20220901130253.1684344-1-adhemerval.zanella@linaro.org> (raw)
Not all compilers support the inline asm prefix '%v' to emit the avx
instruction if AVX is enable. Use a prefix instead.
Checked on x86_64-linux-gnu and i686-linux-gnu.
---
sysdeps/x86/fpu/sfp-machine.h | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/sysdeps/x86/fpu/sfp-machine.h b/sysdeps/x86/fpu/sfp-machine.h
index 5892f4f5fe..006eebe257 100644
--- a/sysdeps/x86/fpu/sfp-machine.h
+++ b/sysdeps/x86/fpu/sfp-machine.h
@@ -39,9 +39,15 @@ typedef unsigned int UTItype __attribute__ ((mode (TI)));
# define FP_RND_MASK 0x6000
+# ifdef __AVX__
+# define AVX_INSN_PREFIX "v"
+# else
+# define AVX_INSN_PREFIX ""
+# endif
+
# define FP_INIT_ROUNDMODE \
do { \
- __asm__ __volatile__ ("%vstmxcsr\t%0" : "=m" (_fcw)); \
+ __asm__ __volatile__ (AVX_INSN_PREFIX "stmxcsr\t%0" : "=m" (_fcw)); \
} while (0)
#else
# define _FP_W_TYPE_SIZE 32
--
2.34.1
next reply other threads:[~2022-09-01 13:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-01 13:02 Adhemerval Zanella [this message]
2022-09-01 16:42 ` H.J. Lu
2022-09-01 16:49 ` H.J. Lu
2022-09-01 17:29 ` Adhemerval Zanella Netto
2022-09-03 2:00 ` H.J. Lu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220901130253.1684344-1-adhemerval.zanella@linaro.org \
--to=adhemerval.zanella@linaro.org \
--cc=libc-alpha@sourceware.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).