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[Bug middle-end/32285] [4.1 Regression] Miscompilation with pure _Complex returning call inside another fn's argument list
- From: "jconner at apple dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 13 Jun 2007 17:09:48 -0000
- Subject: [Bug middle-end/32285] [4.1 Regression] Miscompilation with pure _Complex returning call inside another fn's argument list
- References: <bug-32285-87@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #7 from jconner at apple dot com 2007-06-13 17:09 -------
(In reply to comment #6)
> I see that PR25505 caused a bunch of code generation regressions.
> On i?86, with -O2 -m32:
> ...
When you say regressions, I assume you mean size/performance, not correctness,
right? If so, that's to be expected, as the previous tree-nrv implementation
was being overly permissive, and the new implementation is conservatively
pessimistic, as the comments indicate. If I have introduced anything
incorrect, please let me know and I'd be glad to take a look. Thanks!
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32285