From: Richard Henderson <rth@cygnus.com>
To: Jamie Lokier <jamie.lokier@cern.ch>
Cc: "Martin v. Loewis" <martin@mira.isdn.cs.tu-berlin.de>,
skawina@geocities.com, gcc@gcc.gnu.org
Subject: Re: what's required for builtin_memcpy to be inlined
Date: Fri, 10 Sep 1999 12:20:00 -0000 [thread overview]
Message-ID: <19990910121829.D5064@cygnus.com> (raw)
In-Reply-To: <19990910174426.B24439@pcep-jamie.cern.ch>
On Fri, Sep 10, 1999 at 05:44:26PM +0200, Jamie Lokier wrote:
> The size is variable, but known by dataflow inference at compile time.
> I think GCC returns 1 from __builtin_constant_p in this case, nowadays.
If it can -- we currently reduce __builtin_constant_p before
gcse, so we'll not see a value set from a constant in another
basic block, as the original example had.
r~
WARNING: multiple messages have this Message-ID
From: Richard Henderson <rth@cygnus.com>
To: Jamie Lokier <jamie.lokier@cern.ch>
Cc: "Martin v. Loewis" <martin@mira.isdn.cs.tu-berlin.de>,
skawina@geocities.com, gcc@gcc.gnu.org
Subject: Re: what's required for builtin_memcpy to be inlined
Date: Thu, 30 Sep 1999 18:02:00 -0000 [thread overview]
Message-ID: <19990910121829.D5064@cygnus.com> (raw)
Message-ID: <19990930180200.lcJ5JjAHzx7duKFaGAlitwFlI876B8CwpKJzTFcHwTg@z> (raw)
In-Reply-To: <19990910174426.B24439@pcep-jamie.cern.ch>
On Fri, Sep 10, 1999 at 05:44:26PM +0200, Jamie Lokier wrote:
> The size is variable, but known by dataflow inference at compile time.
> I think GCC returns 1 from __builtin_constant_p in this case, nowadays.
If it can -- we currently reduce __builtin_constant_p before
gcse, so we'll not see a value set from a constant in another
basic block, as the original example had.
r~
next prev parent reply other threads:[~1999-09-10 12:20 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-09-08 19:21 Artur Skawina
1999-09-08 19:35 ` Joe Buck
1999-09-09 14:39 ` Artur Skawina
1999-09-30 18:02 ` Artur Skawina
1999-09-30 18:02 ` Joe Buck
1999-09-09 1:47 ` Martin v. Loewis
1999-09-10 8:45 ` Jamie Lokier
1999-09-10 12:20 ` Richard Henderson [this message]
1999-09-10 15:33 ` Artur Skawina
1999-09-10 16:12 ` Richard Henderson
1999-09-13 10:31 ` Joern Rennecke
1999-09-13 12:01 ` Richard Henderson
1999-09-13 16:43 ` Joern Rennecke
1999-09-30 18:02 ` Joern Rennecke
1999-09-30 18:02 ` Richard Henderson
1999-09-30 18:02 ` Joern Rennecke
1999-09-30 18:02 ` Richard Henderson
1999-09-30 18:02 ` Artur Skawina
1999-09-30 18:02 ` Richard Henderson
1999-09-10 13:47 ` Martin v. Loewis
1999-09-30 18:02 ` Martin v. Loewis
1999-09-30 18:02 ` Jamie Lokier
1999-09-30 18:02 ` Martin v. Loewis
1999-09-30 18:02 ` Artur Skawina
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