Avoid -Wvla-parameter for nontrivial bounds [PR97548].
Resolves:
PR c/101289 - bogus -Wvla-paramater warning when using const for vla param
PR c/97548 - bogus -Wvla-parameter on a bound expression involving a parameter
gcc/c-family/ChangeLog:
PR c/101289
PR c/97548
* c-warn.c (warn_parm_array_mismatch): Use OEP_DECL_NAME.
gcc/c/ChangeLog:
PR c/101289
PR c/97548
* c-decl.c (get_parm_array_spec): Strip nops.
gcc/ChangeLog:
PR c/101289
PR c/97548
* fold-const.c (operand_compare::operand_equal_p): Handle OEP_DECL_NAME.
(operand_compare::verify_hash_value): Same.
* tree-core.h (OEP_DECL_NAME): New.
gcc/testsuite/ChangeLog:
* gcc.dg/Wvla-parameter-12.c: New test.