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[Bug target/21588] x86 machine builtins do not have any const/pure attributes set
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 30 Sep 2005 12:56:42 -0000
- Subject: [Bug target/21588] x86 machine builtins do not have any const/pure attributes set
- References: <20050515175041.21588.steven@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-30 12:56 -------
(In reply to comment #5)
> Does the code quality regression still hold even after libcalls was
> removed? These definitly was one of reason for ineffencities in
> pure/const function call code generation.
I doubt it since these expanded into RTL instruction and there is no call at the rtl level.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21588