pack02.c: Use __ibm128 instead of long double if the long double format is IEEE 128...

pack02.c: Use __ibm128 instead of long double if the long double format is IEEE 128-bit...

2018-06-21  Michael Meissner  <meissner@linux.ibm.com>

	* gcc.target/powerpc/pack02.c: Use __ibm128 instead of long double
	if the long double format is IEEE 128-bit for tests that are
	explicitly testing IBM extended double support.  Use the
	appropriate pack and unpack built-in functions.  Change calls from
	__builtin_isinfl to __builtin_isinf since the later supports all
	floating point types.
	* gcc.target/powerpc/pr57150.c: Likewise.
	* gcc.target/powerpc/pr60203.c: Likewise.
	* gcc.target/powerpc/pr67808.c: Likewise.
	* gcc.target/powerpc/pr70117.c: Likewise.
	* gcc.target/powerpc/tfmode_off.c: Likewise.

From-SVN: r261872