On May 30, 2014, at 10:39 AM, Jeff Law wrote:
> On 05/25/14 18:19, Matt Thomas wrote:
>>
>> But even if movhi is a define_expand, as far as I can tell there's
>> isn't enough info to know whether that is possible. At that time,
>> how can I tell that operands[0] will be a hard reg or operands
On 05/25/14 18:19, Matt Thomas wrote:
But even if movhi is a define_expand, as far as I can tell there's
isn't enough info to know whether that is possible. At that time,
how can I tell that operands[0] will be a hard reg or operands[1]
will be subreg of a mode dependent memory access?
At that
GCC 4.8 for VAX is generating a subreg:HI for mem:SI indexed address. This
eventually gets caught by an assert in change_address_1. Since the MEM rtx is
SI, legimate_address_p thinks it's fine.
I have a change to vax.md which catches these but it's extremely ugly and I
have to think there'
