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Re: wide-int, ada
- From: Richard Earnshaw <rearnsha at arm dot com>
- To: Eric Botcazou <ebotcazou at adacore dot com>
- Cc: Kenneth Zadeck <zadeck at naturalbridge dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, Mike Stump <mikestump at comcast dot net>
- Date: Tue, 26 Nov 2013 13:44:15 +0000
- Subject: Re: wide-int, ada
- Authentication-results: sourceware.org; auth=none
- References: <0075C6DB-B432-4E6F-8A48-3AE0C4D842FE at comcast dot net> <1464599 dot QpNUskFgRu at polaris> <5293FE59 dot 6090801 at naturalbridge dot com> <14902105 dot e0dHrA5yuq at polaris>
On 26/11/13 09:18, Eric Botcazou wrote:
>> you are correct - this was an incorrect change. I believe that the
>> patch below would be correct, but it is impossible to test it because (i
>> believe) that gcc no longer works if the host_bits_per_wide_int is 32.
>> I could be wrong about this but if i am correct, what do you want me to do?
>
> While you're right that most mainstream architectures now require a 64-bit
> HWI, not all of them do according to config.gcc, so I don't think that this
> path is entirely dead yet. I'll carry out the testing once we agree on the
> final change.
I'm hoping, once this patch series is in that we might be able to
migrate the ARM port back to supporting a 32-bit HWI. The driving
factor behind the original switch was supporting 128-bit constants for
Neon and these patches should resolve that.
R.