RFA: Update XFAIL comments in

[Nick Clifton]

Hi Guys,

  I would like to close out PR 70681 by applying the patch below.  It
  updates the XFAIL comments in the two affected tests, explaining why
  the check for shrink-wrapping will fail.  There is nothing actually
  wrong here.  The shrink wrapping optimization is working and the
  targets are not broken, it is just that, for these particular test
  cases, for these specific architectures (ARM, PPC), the unshrink-
  wrapped code is actually smaller than the shrink wrapped version.

  So - is it OK to apply the patch ?

Cheers
  Nick

gcc/testsuite/ChangeLog
2017-01-20  Nick Clifton  <nickc@redhat.com>

	* gcc.dg/pr10474.c: Update XFAIL comment to explain why the
	check for shrink-wrapping can be expected to fail.
	* gcc.dg/vect/vect-strided-a-u8-i2-gap.c: Likewise.

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