On 01/10/14 13:45, Jakub Jelinek wrote:
Hi!
The new REGNO != REGNO optimization assumes that a lowpart subreg of
the extended reg will be the value of the original expression.
But that is the case of only scalar integral modes, e.g. for vector
mode extensions a lowpart subreg will occupy just say half or even fewer
vector elements, but in the extended element values instead of original.
Fixed thusly, bootstrapped/regtested on x86_64-linux and i686-linux,
and eyeballed the testcase for AVX512F from the testsuite. Ok for trunk?
2014-01-10 Jakub Jelinek <ja...@redhat.com>
PR rtl-optimization/59754
* ree.c (combine_reaching_defs): Disallow !SCALAR_INT_MODE_P
modes in the REGNO != REGNO case.
Yes, this is fine. Thanks for taking care of it, my testing boxes are
busy testing the other two queued ree things.
jeff
