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Re: [PATCH 1/6] Disallow predicating the prologue
- From: Bernd Schmidt <bernds at codesourcery dot com>
- To: "H.J. Lu" <hjl dot tools at gmail dot com>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Fri, 01 Apr 2011 22:33:28 +0200
- Subject: Re: [PATCH 1/6] Disallow predicating the prologue
- References: <4D8A0703.9090306@codesourcery.com> <4D8A0786.4060509@codesourcery.com> <AANLkTimgnGH+4sFL80qJ6v6mHAyO9Qt7y7tGvSGJB7YS@mail.gmail.com>
On 04/01/2011 08:59 PM, H.J. Lu wrote:
> On Wed, Mar 23, 2011 at 7:45 AM, Bernd Schmidt <bernds@codesourcery.com> wrote:
>> With prologues appearing in blocks other than the entry block, ifcvt can
>> decide to predicate them. This is not a good idea, as dwarf2out will
>> blow up trying to handle predicated frame-related things.
>>
>
> One of your changes breaks GCC bootstrap:
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48403
I bootstrapped and tested on i686-linux, so it would be useful if you
could narrow it down.
Bernd