b8c9cc5100
As Jason pointed out in the review of the C++ gnu_vector_type_p patch:
https://gcc.gnu.org/ml/gcc-patches/2019-12/msg00173.html
the real fix for the XFAILs in acle/general-c++/gnu_vectors_*.C is to
make same_type_p return false for two types if one is gnu_vector_type_p
and the other isn't. This patch does that and fixes the fallout.
Originally I'd tried to make it so that "X *" and "Y *" are
interconvertible whenever X and Y are, and similarly for
"X &" and "Y &". That doesn't fall out naturally though,
and is different from how -flax-vector-conversions works.
The patch therefore accepts all the consequences of making
X and Y !same_type_p instead of trying to work around them.
2019-12-23 Richard Sandiford <richard.sandiford@arm.com>
gcc/cp/
PR c++/92789
* typeck.c (structural_comptypes): Make sure that two vector types
agree on gnu_vector_type_p.
gcc/testsuite/
PR c++/92789
* g++.dg/ext/sve-sizeless-2.C (statements): Expect pointer
difference and comparisons between GNU and non-GNU types
to be rejected. Expect __is_same to be false for such pairs.
* g++.target/aarch64/sve/acle/general-c++/gnu_vectors_1.C: Remove
XFAILs. Expect conversions between SVE vector pointers and
GNU vector pointers to be rejected. Test references.
* g++.target/aarch64/sve/acle/general-c++/gnu_vectors_2.C: Likewise.
From-SVN: r279717
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