rs6000: Add builtins for IEEE 128-bit floating point values

Add support for the following builtins:

 __vector unsigned long long int scalar_extract_exp_to_vec (__ieee128);
 __vector unsigned __int128 scalar_extract_sig_to_vec (__ieee128);
 __ieee128 scalar_insert_exp (__vector unsigned __int128,
 			      __vector unsigned long long);

The instructions used in the builtins operate on vector registers.  Thus
the result must be moved to a scalar type.  There is no clean, performant
way to do this.  The user code typically needs the result as a vector
anyway.

gcc/
	* config/rs6000/rs6000-builtin.cc (rs6000_expand_builtin):
	Rename CODE_FOR_xsxsigqp_tf to CODE_FOR_xsxsigqp_tf_ti.
	Rename CODE_FOR_xsxsigqp_kf to CODE_FOR_xsxsigqp_kf_ti.
	Rename CCDE_FOR_xsxexpqp_tf to CODE_FOR_xsxexpqp_tf_di.
	Rename CODE_FOR_xsxexpqp_kf to CODE_FOR_xsxexpqp_kf_di.
	(CODE_FOR_xsxexpqp_kf_v2di, CODE_FOR_xsxsigqp_kf_v1ti,
	CODE_FOR_xsiexpqp_kf_v2di): Add case statements.
	* config/rs6000/rs6000-builtins.def
	(__builtin_vsx_scalar_extract_exp_to_vec,
	__builtin_vsx_scalar_extract_sig_to_vec,
	__builtin_vsx_scalar_insert_exp_vqp): Add new builtin definitions.
	Rename xsxexpqp_kf, xsxsigqp_kf, xsiexpqp_kf to xsexpqp_kf_di,
	xsxsigqp_kf_ti, xsiexpqp_kf_di respectively.
	* config/rs6000/rs6000-c.cc (altivec_resolve_overloaded_builtin):
	Update case RS6000_OVLD_VEC_VSIE to handle MODE_VECTOR_INT for new
	overloaded instance. Update comments.
	* config/rs6000/rs6000-overload.def
	(__builtin_vec_scalar_insert_exp): Add new overload definition with
	vector arguments.
	(scalar_extract_exp_to_vec, scalar_extract_sig_to_vec): New
	overloaded definitions.
	* config/rs6000/vsx.md (V2DI_DI): New mode iterator.
	(DI_to_TI): New mode attribute.
	Rename xsxexpqp_<mode> to sxexpqp_<IEEE128:mode>_<V2DI_DI:mode>.
	Rename xsxsigqp_<mode> to xsxsigqp_<IEEE128:mode>_<VEC_TI:mode>.
	Rename xsiexpqp_<mode> to xsiexpqp_<IEEE128:mode>_<V2DI_DI:mode>.
	* doc/extend.texi (scalar_extract_exp_to_vec,
	scalar_extract_sig_to_vec): Add documentation for new builtins.
	(scalar_insert_exp): Add new overloaded builtin definition.

gcc/testsuite/
	* gcc.target/powerpc/bfp/scalar-extract-exp-8.c: New test case.
	* gcc.target/powerpc/bfp/scalar-extract-sig-8.c: New test case.
	* gcc.target/powerpc/bfp/scalar-insert-exp-16.c: New test case.

0 files changed, 0 insertions, 0 deletions