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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/66822] Turn off X86_TUNE_ZERO_EXTEND_WITH_AND for -miamcu
Date: Thu, 09 Jul 2015 18:09:00 -0000 [thread overview]
Message-ID: <bug-66822-4-b8sIbF8g83@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-66822-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66822
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Yulia Koval from comment #1)
> I think it's a good idea.
If we do that, we may also adjust iamcu_cost:
COSTS_N_INSNS (3), /* cost of movsx */
COSTS_N_INSNS (2), /* cost of movzx */
next prev parent reply other threads:[~2015-07-09 18:09 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-09 11:48 [Bug target/66822] New: Turn off X86_TUNE_ZERO_EXTEND_WITH_AND for IAMCU hjl.tools at gmail dot com
2015-07-09 12:12 ` [Bug target/66822] Turn off X86_TUNE_ZERO_EXTEND_WITH_AND for -miamcu julia.koval at intel dot com
2015-07-09 18:09 ` hjl.tools at gmail dot com [this message]
2015-07-09 20:32 ` ubizjak at gmail dot com
2015-07-10 1:42 ` [Bug target/66822] Turn -mtune=iamcu for size hjl.tools at gmail dot com
2015-07-10 1:46 ` hjl.tools at gmail dot com
2015-07-10 1:59 ` hjl.tools at gmail dot com
2015-07-10 9:16 ` ubizjak at gmail dot com
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