commit 55cb8c5c9abfe83c342a7b8e8b7dd4bee1791302
author Eric Botcazou <ebotcazou@adacore.com> Tue Nov 22 19:03:49 2022 +0100
committer Eric Botcazou <ebotcazou@adacore.com> Tue Nov 22 19:04:58 2022 +0100
tree 643d1a2b25dd6ece3f251992e73e9f90be3af7bf
parent dfc1ea414e0cebccfcffc771ebcefa3d24c9754c

Fix wrong array type conversion with different storage orde

When two arrays of scalars have a different storage order in Ada, the
front-end makes sure that the conversion is performed component-wise
so that each component can be reversed.  So it's a little bit counter
productive that the ldist pass performs the opposite transformation
and synthesizes a memcpy/memmove in this case.

gcc/
	* tree-loop-distribution.cc (loop_distribution::classify_builtin_ldst):
	Bail out if source and destination do not have the same storage order.

gcc/testsuite/
	* gnat.dg/sso18.adb: New test.