From: Segher Boessenkool <segher@kernel.crashing.org>
To: Nick Desaulniers <ndesaulniers@google.com>
Cc: Jakub Jelinek <jakub@redhat.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
"maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)"
<x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
"gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>,
clang-built-linux <clang-built-linux@googlegroups.com>
Subject: Re: [PATCH v2 4/6] compiler-gcc.h: add asm_inline definition
Date: Thu, 19 Sep 2019 19:50:44 -0500 [thread overview]
Message-ID: <20190920005044.GN9749@gate.crashing.org> (raw)
In-Reply-To: <CAKwvOdmhcaHpnqhMwzpYdjjwfAhgzq7fqA0Hu8b19E5w3AHz4w@mail.gmail.com>
On Thu, Sep 12, 2019 at 02:54:50PM -0700, Nick Desaulniers wrote:
> I have seen instances where instruction selection fails to select the
> appropriate way to branch when inline asm size is misjudged, resulting
> in un-encodeable jumps (as in the branch target is too far to be
> encoded in the number of bits of a single jump/branch instruction).
"asm inline" *only* influences the estimated size *for inlining
purposes*. Not for anything else. Everything else still uses
conservative estimates.
Segher
next prev parent reply other threads:[~2019-09-20 0:51 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-29 8:32 [RFC PATCH 0/5] make use of gcc 9's "asm inline()" Rasmus Villemoes
2019-08-29 8:32 ` [RFC PATCH 1/5] treewide: replace __inline__ by inline Rasmus Villemoes
2019-08-29 16:29 ` Joe Perches
2019-08-29 8:32 ` [RFC PATCH 2/5] compiler_types.h: don't #define __inline__ Rasmus Villemoes
2019-08-29 8:32 ` [RFC PATCH 3/5] compiler-gcc.h: add asm_inline definition Rasmus Villemoes
2019-08-29 8:32 ` [RFC PATCH 4/5] x86: alternative.h: use asm_inline for all alternative variants Rasmus Villemoes
2019-08-29 8:32 ` [RFC PATCH 5/5] x86: bug.h: use asm_inline in _BUG_FLAGS definitions Rasmus Villemoes
2019-08-29 16:05 ` [RFC PATCH 0/5] make use of gcc 9's "asm inline()" Linus Torvalds
2019-08-30 7:45 ` Rasmus Villemoes
2019-08-29 17:36 ` Nick Desaulniers
2019-08-29 18:15 ` Linus Torvalds
2019-08-29 18:26 ` Nadav Amit
2019-08-29 18:42 ` Borislav Petkov
2019-08-29 19:41 ` Masahiro Yamada
2019-08-30 23:15 ` [PATCH v2 0/6] " Rasmus Villemoes
2019-08-30 23:15 ` [PATCH v2 1/6] staging: rtl8723bs: replace __inline by inline Rasmus Villemoes
2019-09-04 23:54 ` Nick Desaulniers
2019-08-30 23:15 ` [PATCH v2 2/6] lib/zstd/mem.h: " Rasmus Villemoes
2019-09-04 23:59 ` Nick Desaulniers
2019-09-05 0:07 ` Miguel Ojeda
2019-09-05 9:28 ` Rasmus Villemoes
2019-08-30 23:15 ` [PATCH v2 3/6] compiler_types.h: don't #define __inline Rasmus Villemoes
2019-09-05 0:13 ` Nick Desaulniers
2019-09-05 9:45 ` Rasmus Villemoes
2019-08-30 23:15 ` [PATCH v2 4/6] compiler-gcc.h: add asm_inline definition Rasmus Villemoes
2019-09-05 0:18 ` Nick Desaulniers
2019-09-05 5:43 ` Nadav Amit
2019-09-05 11:07 ` Rasmus Villemoes
2019-09-05 13:45 ` Segher Boessenkool
2019-09-05 14:23 ` Rasmus Villemoes
2019-09-05 14:47 ` Segher Boessenkool
2019-09-05 15:52 ` Miguel Ojeda
2019-09-05 16:13 ` Miguel Ojeda
2019-09-06 12:23 ` Segher Boessenkool
2019-09-06 15:13 ` Miguel Ojeda
2019-09-06 16:30 ` Segher Boessenkool
2019-09-06 16:39 ` Jakub Jelinek
2019-09-06 18:14 ` Nick Desaulniers
2019-09-06 22:03 ` Segher Boessenkool
2019-09-06 22:35 ` Nick Desaulniers
2019-09-06 22:56 ` Segher Boessenkool
2019-09-06 23:42 ` Nick Desaulniers
2019-09-07 0:14 ` Segher Boessenkool
2019-09-07 1:04 ` Nick Desaulniers
2019-09-07 13:11 ` Segher Boessenkool
2019-09-08 13:55 ` Miguel Ojeda
2019-09-12 21:54 ` Nick Desaulniers
2019-09-12 22:12 ` Rasmus Villemoes
2019-09-20 0:50 ` Segher Boessenkool [this message]
2019-09-06 16:47 ` Miguel Ojeda
2019-08-30 23:15 ` [PATCH v2 5/6] x86: alternative.h: use asm_inline for all alternative variants Rasmus Villemoes
2019-08-30 23:15 ` [PATCH v2 6/6] x86: bug.h: use asm_inline in _BUG_FLAGS definitions Rasmus Villemoes
2019-09-12 22:19 ` [PATCH v3 0/6] make use of gcc 9's "asm inline()" Rasmus Villemoes
2019-09-12 22:19 ` [PATCH v3 1/6] staging: rtl8723bs: replace __inline by inline Rasmus Villemoes
2019-09-29 10:40 ` Greg Kroah-Hartman
2019-09-12 22:19 ` [PATCH v3 2/6] lib/zstd/mem.h: " Rasmus Villemoes
2019-09-12 22:19 ` [PATCH v3 3/6] compiler_types.h: don't #define __inline Rasmus Villemoes
2019-09-12 22:19 ` [PATCH v3 4/6] compiler-types.h: add asm_inline definition Rasmus Villemoes
2019-09-12 22:19 ` [PATCH v3 5/6] x86: alternative.h: use asm_inline for all alternative variants Rasmus Villemoes
2019-09-13 5:41 ` Ingo Molnar
2019-09-12 22:19 ` [PATCH v3 6/6] x86: bug.h: use asm_inline in _BUG_FLAGS definitions Rasmus Villemoes
2019-09-13 5:42 ` Ingo Molnar
2019-09-12 22:30 ` [PATCH v3 0/6] make use of gcc 9's "asm inline()" Miguel Ojeda
2019-09-13 6:11 ` Rasmus Villemoes
2019-09-13 15:21 ` Greg Kroah-Hartman
2019-09-15 18:20 ` Miguel Ojeda
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=20190920005044.GN9749@gate.crashing.org \
--to=segher@kernel.crashing.org \
--cc=clang-built-linux@googlegroups.com \
--cc=gcc-patches@gcc.gnu.org \
--cc=jakub@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@rasmusvillemoes.dk \
--cc=miguel.ojeda.sandonis@gmail.com \
--cc=ndesaulniers@google.com \
--cc=x86@kernel.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 NNTP newsgroup(s).