re PR sanitizer/81715 (asan-stack=1 redzone allocation is too inflexible)

re PR sanitizer/81715 (asan-stack=1 redzone allocation is too inflexible)

	PR sanitizer/81715
	* tree-inline.c (expand_call_inline): Emit clobber stmts for
	VAR_DECLs to which addressable non-volatile parameters are mapped
	and for id->retvar after the return value assignment.  Clear
	id->retval and id->retbnd after inlining.

	* g++.dg/tree-ssa/pr8781.C (noop): Change argument type from
	const predicate to const predicate & to avoid UB.
	* g++.dg/opt/pr81715.C: New test.

From-SVN: r253065