On Fri, Sep 21, 2012 at 5:26 PM, Eric Botcazou <ebotca...@adacore.com> wrote:
>> Although the testcase doesn't trip on this part, the result_mode is
>> taken from the operand mode of cmp{mem,str,strn}_optab. As in the
>> second case, there is no guarantee that compare that compares the
>> result of cmp{mem,str,stn}_optab can handle output mode of this optab.
>
> It's up to you to write a correct pattern with an appropriate result mode.OK, I can live with this; if some other unfortunate target trips here, we will know how to fix it. >> The testcase does not fail on release branches, but simply due to the >> fact that BLKmode compares are not adequately tested. Otherwise, >> BLKmode compares would always fail on alpha. > > What happens for the testcase on the release branches? It doesn't use BKLmode > compares? If so, is it ever possible to use BLKmode compares on Alpha? Vector compare testcases can't be compiled with 4.7- - vector compares are not implemented for C++ there. As observed, BLKmode compare is not triggered for alpha in the whole testsuite, as far as release branches are concerned. Uros.
