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[Bug target/57949] [powerpc64] Structure parameter alignment issue with vector extensions
- From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 23 Jul 2013 20:28:54 +0000
- Subject: [Bug target/57949] [powerpc64] Structure parameter alignment issue with vector extensions
- Auto-submitted: auto-generated
- References: <bug-57949-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57949
Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |joseph at codesourcery dot com
--- Comment #5 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Joseph, adding you for any comments you might have relative to Freescale
impacts.
Summarizing some offline discussion:
* This would apply to long double, __int128, and (probably) _Decimal128 as
well. The fix is the same in all cases.
* There may be some oddities for _Decimal128, as the need to be in even/odd
register pairs may conflict with alignment in storage. The 64-bit ABI does not
currently specify the alignment for _Decimal128 so we'll need to check the code
to see what's the case in practice.