middle-end/102518 - avoid invalid GIMPLE during inlining

middle-end/102518 - avoid invalid GIMPLE during inlining

When inlining we have to avoid mapping a non-lvalue parameter
value into a context that prevents the parameter to be a register.
Formerly the register were TREE_ADDRESSABLE but now it can be
just DECL_NOT_GIMPLE_REG_P.

2021-09-30  Richard Biener  <rguenther@suse.de>

	PR middle-end/102518
	* tree-inline.c (setup_one_parameter): Avoid substituting
	an invariant into contexts where a GIMPLE register is not valid.

	* gcc.dg/torture/pr102518.c: New testcase.