This makes _mm_{min,max}_ps work correctly for QNaNs.


	PR target/83315
	* config/rs6000/xmmintrin.h (_mm_set_ps, _mm_max_ps): Handle (quiet)
	NaN inputs correctly.

gcc/testsuite/
	PR target/83315
	* gcc.target/powerpc/sse-maxps-2.c: New test.
	* gcc.target/powerpc/sse-minps-2.c: New test.

From-SVN: r258988