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Re: [COMMITTED] tilegx: enable wordsize-64 support for ieee745 dbl-64.

From: Chris Metcalf <cmetcalf at ezchip dot com>
To: "H.J. Lu" <hjl dot tools at gmail dot com>
Cc: Andrew Pinski <pinskia at gmail dot com>, Joseph Myers <joseph at codesourcery dot com>, GNU C Library <libc-alpha at sourceware dot org>
Date: Fri, 26 Dec 2014 11:58:34 -0500
Subject: Re: [COMMITTED] tilegx: enable wordsize-64 support for ieee745 dbl-64.
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References: <201412231905 dot sBNJ5c3C004622 at farm-0002 dot internal dot tilera dot com> <alpine dot DEB dot 2 dot 10 dot 1412231958370 dot 31777 at digraph dot polyomino dot org dot uk> <5499D4FE dot 8070405 at ezchip dot com> <5499DA84 dot 3010205 at ezchip dot com> <CAMe9rOr2DU5qYDQriF9RvAJCJF_wZ3gzqqHGDZXf+-OZFuJX0g at mail dot gmail dot com> <5499E115 dot 9000502 at ezchip dot com> <CAMe9rOrFEVEpPik-qMR=SPM-Eqgetwg9C3oztjT4yTf74S+EWw at mail dot gmail dot com> <549AF3A3 dot 8070007 at ezchip dot com> <CA+=Sn1kumpH2iCOYykmJb8LjNA1jufoKj8hhqiA4XR=KtCJA-g at mail dot gmail dot com> <549D7976 dot 8020403 at ezchip dot com> <CAMe9rOrO3SKqJj7cs7ZGU0c-YwCO3kSOug=Maftzt_BnFvc6hg at mail dot gmail dot com>

On 12/26/2014 10:44 AM, H.J. Lu wrote:

On Fri, Dec 26, 2014 at 7:06 AM, Chris Metcalf <cmetcalf@ezchip.com> wrote:

So sounds like two in each "camp", x32 and AArch64:ILP32 not wanting a cast,
and tilegx32 and MIPS needing the explicit cast, so requiring a
preprocessor symbol to be defined for that code seems like the right thing.

Any objections to the proposed code to do the extension in llround.c?

Can we find a better name that USE_32BIT_NORMALIZE? How
about REGISTER_CAST_INT32_TO_INT64?  Also it should be an
error if the macro is undefined.


Sure, that name seems fine.  And since I'm proposing #if rather than
#ifdef, it will be an error with -Wundef -Werror if it is undefined.

--
Chris Metcalf, EZChip Semiconductor
http://www.ezchip.com

References:
- [COMMITTED] tilegx: enable wordsize-64 support for ieee745 dbl-64.
  - From: Chris Metcalf
- Re: [COMMITTED] tilegx: enable wordsize-64 support for ieee745 dbl-64.
  - From: Joseph Myers
- Re: [COMMITTED] tilegx: enable wordsize-64 support for ieee745 dbl-64.
  - From: Chris Metcalf
- Re: [COMMITTED] tilegx: enable wordsize-64 support for ieee745 dbl-64.
  - From: Chris Metcalf
- Re: [COMMITTED] tilegx: enable wordsize-64 support for ieee745 dbl-64.
  - From: H.J. Lu
- Re: [COMMITTED] tilegx: enable wordsize-64 support for ieee745 dbl-64.
  - From: Chris Metcalf
- Re: [COMMITTED] tilegx: enable wordsize-64 support for ieee745 dbl-64.
  - From: H.J. Lu
- Re: [COMMITTED] tilegx: enable wordsize-64 support for ieee745 dbl-64.
  - From: Chris Metcalf
- Re: [COMMITTED] tilegx: enable wordsize-64 support for ieee745 dbl-64.
  - From: Andrew Pinski
- Re: [COMMITTED] tilegx: enable wordsize-64 support for ieee745 dbl-64.
  - From: Chris Metcalf
- Re: [COMMITTED] tilegx: enable wordsize-64 support for ieee745 dbl-64.
  - From: H.J. Lu

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