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[Bug target/21715] [4.0/4.1 regression] code-generation performance regression
- From: "kazu at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 19 Dec 2005 02:30:01 -0000
- Subject: [Bug target/21715] [4.0/4.1 regression] code-generation performance regression
- References: <bug-21715-4672@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from kazu at gcc dot gnu dot org 2005-12-19 02:30 -------
I just compiled the testcase on x86_64. I got
foo:
.LFB2:
movq %rdi, %rax
negq %rax
andq %rdi, %rax
ret
which is as good as the assembly generated by 3.4.3.
This is no longer a regression on 4.2.
--
kazu at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kazu at gcc dot gnu dot org
Known to work|3.4.3 |3.4.3 4.2.0
Summary|[4.0/4.1/4.2 regression] |[4.0/4.1 regression] code-
|code-generation performance |generation performance
|regression |regression
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21715