rs6000-cpus.def (OTHER_VSX_VECTOR_MASKS): Delete OPTION_MASK_FLOAT128_KEYWORD.

rs6000-cpus.def (OTHER_VSX_VECTOR_MASKS): Delete OPTION_MASK_FLOAT128_KEYWORD.

[gcc]
2017-09-07  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/rs6000-cpus.def (OTHER_VSX_VECTOR_MASKS): Delete
	OPTION_MASK_FLOAT128_KEYWORD.
	(POWERPC_MASKS): Likewise.
	* config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Delete
	support for the -mfloat128-type option, and make -mfloat128
	default on PowerPC Linux systems.  Define or undefine
	__FLOAT128__ and  __FLOAT128_HARDWARE__ for the current options.
	Define __float128 to be __ieee128 if IEEE 128-bit support is
	enabled, or undefine it.
	(rs6000_cpu_cpp_builtins): Delete defining __FLOAT128__ here.
	Delete defining __FLOAT128_TYPE__.
	* config/rs6000/rs6000.opt (x_TARGET_FLOAT128_TYPE): Delete the
	-mfloat128-type option and make -mfloat128 default on PowerPC
	Linux systems.
	(TARGET_FLOAT128_TYPE): Likewise.
	(-mfloat128-type): Likewise.
	* config/rs6000/rs6000.c (rs6000_option_override_internal):
	Delete the -mfloat128-type option and make -mfloat128 default on
	PowerPC Linux systems.  Always use __ieee128 to be the keyword for
	the IEEE 128-bit type, and map __float128 to __ieee128 if IEEE
	128-bit floating point is enabled.  Change tests from using
	-mfloat128-type to -mfloat128.
	(rs6000_mangle_type): Use the correct mangling for the __float128
	type even if normal long double is restricted to 64-bits.
	(floatn_mode): Enable the _Float128 type by default on VSX Linux
	systems.
	* config/rs6000/rs6000.h (MASK_FLOAT128_TYPE): Delete.
	(MASK_FLOAT128_KEYWORD): Define new shortcut macro.
	(RS6000BTM_FLOAT128): Define in terms of -mfloat128, not
	-mfloat128-type.
	* doc/invoke.texi (RS/6000 and PowerPC Options): Update
	documentation for -mfloat128.

[gcc/testsuite]
2017-09-07  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* gcc.target/powerpc/float128-1.c: Update options to know that
	-mfloat128 is now on by default on PowerPC VSX systems.  Remove
	-static-libgcc option which is no longer needed.  Use -mvsx or
	-mpower9-vector to enable VSX or hardware IEEE support, rather
	than specifying a particular CPU.
	* gcc.target/powerpc/float128-2.c: Likewise.
	* gcc.target/powerpc/float128-cmp.c: Likewise.
	* gcc.target/powerpc/float128-complex-1.c: Likewise.
	* gcc.target/powerpc/float128-complex-2.c: Likewise.
	* gcc.target/powerpc/float128-hw.c: Likewise.
	* gcc.target/powerpc/float128-mix.c: Likewise.
	* gcc.target/powerpc/float128-type-1.c: Likewise.
	* gcc.target/powerpc/float128-type-2.c: Likewise.
	* gcc.target/powerpc/float128-3.c: New test.
	* gcc.target/powerpc/float128-4.c: Likewise.
	* gcc.target/powerpc/float128-5.c: Likewise.

From-SVN: r251814