PR tree-optimization/86613 - missing -Warray-bounds on a wide string access due to...

PR tree-optimization/86613 - missing -Warray-bounds on a wide string access due to ccp folding

PR tree-optimization/86613 - missing -Warray-bounds on a wide string access due to ccp folding
PR tree-optimization/86611 - missing -Warray-bounds on a large negative index into a string in lp64

gcc/testsuite/ChangeLog:
	* gcc/testsuite/c-c++-common/Warray-bounds-2.c: Undefine macros and
	prune duplicate warnings.
	* gcc/testsuite/gcc.dg/Warray-bounds-31.c: Xfail test cases with
	data-model-dependencies.
	* gcc/testsuite/gcc.dg/Warray-bounds-32.c: Ditto.

From-SVN: r262906