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[Bug target/37878] [4.4 regression] PPC64 ldu command generated with invalid offset
- From: "dje at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 21 Oct 2008 15:14:45 -0000
- Subject: [Bug target/37878] [4.4 regression] PPC64 ldu command generated with invalid offset
- References: <bug-37878-271@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #7 from dje at gcc dot gnu dot org 2008-10-21 15:14 -------
Also, note the problem is a DFmode value in a GPR. FPRs can handle the
non-word-aligned offset. Forcing all DFmode to be 64 bit aligned is not an
option because that is known to impose a severe performance penalty. For
non-update form, we have handled this in rs6000_legitimize_reload_address.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37878