[Bug middle-end/61577] [4.9.0 Regression] can't compile on hp-ux v3 ia64

[dave.anglin at bell dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61577

--- Comment #222 from dave.anglin at bell dot net ---
On 2021-05-20 10:02 a.m., dave.anglin at bell dot net wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61577
>
> --- Comment #220 from dave.anglin at bell dot net ---
> On 2021-05-20 9:37 a.m., jvb at cyberscience dot com wrote:
>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61577
>>
>> --- Comment #219 from John Buddery <jvb at cyberscience dot com> ---
>> Great, thanks - I'll look at ia64.c and build and test with that change.
> Instead of creating a separate HPUX pattern, another way might be to setup
> an instruction alternative table.  See define_insn for prefetch.
There is a which_alternative variable that could be used to check for "s"
constraint
(e.g., "which_alternative == 1").