Hello, Although the recent optimization I have committed to use Neon vext instruction for suitable builtin_shuffle calls does not support big-endian yet, I have written a patch to the existing testcases such they now support big-endian mode.
I think it's worth improving these tests since writing the right masks for big-endian (such that the program computes the same results as in little-endian) is not always straightforward. In particular: * I have added some comments in a few tests were it took me a while to find the right mask. * In the case of the test which is executed, I had to force the noinline attribute on the helper functions, otherwise the computed results are wrong in big-endian. It is probably an overkill workaround but it works :-) I am going to file a bugzilla for this problem. I have checked that replacing calls to builtin_shuffle by the expected Neon vext variant produces the expected results in big-endian mode, and I arranged the big-endian masks to get the same results. Christophe.
neon-vext-big-endian-tests.patch
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