2004-05-03  Uros Bizjak  <uros@kss-loka.si>

	* optabs.h (enum optab_index): Add new OTI_expm1.
	(expm1_optab): Define corresponding macro.
	* optabs.c (init_optabs): Initialize expm1_optab.
	* genopinit.c (optabs): Implement expm1_optab using expm1?f2
	patterns.
	* builtins.c (expand_builtin_mathfn): Handle BUILT_IN_EXPM1{,F,L}
	using expm1_optab.
	(expand_builtin): Expand BUILT_IN_EXPM1{,F,L} using
	expand_builtin_mathfn if flag_unsafe_math_optimizations is set.

	* config/i386/i386.md (expm1df2, expm1sf2, expm1xf2): New expanders
	to implement expm1, expm1f and expm1l built-ins as inline x87
	intrinsics.

testsuite:

        * gcc.dg/builtins-34.c: Also check expm1*.

From-SVN: r81425