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Re: (C++) mangling vector types

From: Richard Henderson <rth at redhat dot com>
To: Jason Merrill <jason at redhat dot com>
Cc: GCC <gcc at gcc dot gnu dot org>, Mark Mitchell <mark at codesourcery dot com>, Ulrich Drepper <drepper at redhat dot com>
Date: Thu, 12 Nov 2009 08:10:13 -0800
Subject: Re: (C++) mangling vector types
References: <4AFC28C8.6090505@redhat.com>

On 11/12/2009 07:24 AM, Jason Merrill wrote:

1) Leave the current mangling as is
2) Leave the current mangling as is for the most common vector size on a
target (SSE, Altivec) and use the new mangling for other vector sizes.
3) Switch to the new mangling

I vote for 2.

a) Add the vector change to the current ABI v3.
b) Take over -fabi-version=3 and bump the template arg change to v4.
c) Use -fabi-version=2.1.
d) Use a separate flag to control vector mangling.

I vote for [^cd]. I have no preference between v3 and v4, but a separate flag seems weird, as does injecting a version number in between 2 and 3.

r~

Follow-Ups:
- Re: (C++) mangling vector types
  - From: Daniel Jacobowitz
- Re: (C++) mangling vector types
  - From: Mark Mitchell

References:
- (C++) mangling vector types
  - From: Jason Merrill

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