PR target/79066
	* config/rs6000/rs6000.md (elf_high, elf_low): Disable when pic.
	* config/rs6000/rs6000.c (rs6000_emit_allocate_stack): Don't allow
	symbolic stack limit when pic.
testsuite/
	* gcc.target/powerpc/pr79066.c: New.

From-SVN: r244515