re PR middle-end/89544 (Argument marshalling incorrectly assumes stack slots are naturally aligned.)

2019-08-20  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR middle-end/89544
        * function.c (assign_parm_find_stack_rtl): Use larger alignment
        when possible.

testsuite:
2019-08-20  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR middle-end/89544
        * gcc.target/arm/unaligned-argument-1.c: New test.
        * gcc.target/arm/unaligned-argument-2.c: New test.

From-SVN: r274691