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Re: [PATCH 01/13] recog: Increased max number of alternatives.
- From: Andreas Krebbel <krebbel at linux dot vnet dot ibm dot com>
- To: Segher Boessenkool <segher at kernel dot crashing dot org>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Mon, 11 May 2015 16:46:05 +0200
- Subject: Re: [PATCH 01/13] recog: Increased max number of alternatives.
- Authentication-results: sourceware.org; auth=none
- References: <1431350621-21405-1-git-send-email-krebbel at linux dot vnet dot ibm dot com> <1431350621-21405-2-git-send-email-krebbel at linux dot vnet dot ibm dot com> <20150511140152 dot GD2521 at gate dot crashing dot org>
On 05/11/2015 04:01 PM, Segher Boessenkool wrote:
> On Mon, May 11, 2015 at 03:23:29PM +0200, Andreas Krebbel wrote:
>> With the vector facility support z13 mov patterns have more than 30
>> alternatives.
>
> Wow, that is a lot!
>
>> --- a/gcc/recog.h
>> +++ b/gcc/recog.h
>> @@ -23,7 +23,7 @@ along with GCC; see the file COPYING3. If not see
>> /* Random number that should be large enough for all purposes. Also define
>> a type that has at least MAX_RECOG_ALTERNATIVES + 1 bits, with the extra
>> bit giving an invalid value that can be used to mean "uninitialized". */
>> -#define MAX_RECOG_ALTERNATIVES 30
>> +#define MAX_RECOG_ALTERNATIVES 35
>> typedef unsigned int alternative_mask;
>
> "int" isn't at least 36 bits.
Right. That should be unsigned HOST_WIDE_INT instead.
Thanks!
-Andreas-