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[Bug rtl-optimization/31944] [4.1/4.2/4.3 Regression] Endless loop while building a 64-bit 2.6.20 kernel
- From: "ebotcazou at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 11 Jan 2008 18:09:04 -0000
- Subject: [Bug rtl-optimization/31944] [4.1/4.2/4.3 Regression] Endless loop while building a 64-bit 2.6.20 kernel
- References: <bug-31944-8932@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #27 from ebotcazou at gcc dot gnu dot org 2008-01-11 18:09 -------
> Obviously, the problem is that the hash of reg 66 is changed after a hash
> table element is created for it in the bucket for the original hash. I have
> no idea yet whether this is expected, or if not, what is going wrong.
More precisely the QTY is changed after the reg has been entered with a hash.
This is expected, but the reg must be removed from the table. The problem
here is that the reg is a pseudo and has been entered twice, for SImode and
DImode, but is only removed once. Tentative fix to be attached.
--
ebotcazou at gcc dot gnu dot org changed:
What |Removed |Added
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31944