On 11/18/2017 10:47 AM, Peter Bergner wrote:
> On 11/18/17 12:16 AM, Jeff Law wrote:
>> You might wander a bit and see if/how cse handles other similar
>> circumstances. For example (not (not (x)) (neg (neg x)) and (bswap
>> (bswap (x))
>
> I actually tried examples like that to see what CSE wou
On 11/18/17 12:16 AM, Jeff Law wrote:
> You might wander a bit and see if/how cse handles other similar
> circumstances. For example (not (not (x)) (neg (neg x)) and (bswap
> (bswap (x))
I actually tried examples like that to see what CSE would do, but I
could never come up with a test case, whe
On 11/17/2017 10:30 PM, Peter Bergner wrote:
> On POWER8 in little endian mode, the lxvd2x and stxvd2x instructions we use
> for loading and storing vectors do not perform a byte swap as part of their
> operation. This means we have to explicitly byte swap a vector before we
> store to memory and
On POWER8 in little endian mode, the lxvd2x and stxvd2x instructions we use
for loading and storing vectors do not perform a byte swap as part of their
operation. This means we have to explicitly byte swap a vector before we
store to memory and byte swap it after we load it from memory. These swa
