This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Should -msse3 enable fisttp

From: Evan Cheng <echeng at apple dot com>
To: gcc at gcc dot gnu dot org
Date: Thu, 29 Sep 2005 13:48:07 -0700
Subject: Should -msse3 enable fisttp

Hi,

I know this has been discussed in bug 18668. But I'd like to bring it up again.

Currently, fisttp is only generated with -march=prescott. The argument is fisttp is not a SSE instruction. While this is technically true, it's likely to surprise the users. Intel, after all, does lump fisttp in SSE3. AMD64 architecture programmer's manual also explicitly state fisttp is a SSE3 instruction.

Please consider enabling fisttp with -msse3.

Thanks,

Evan

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]