2006-10-29 Richard Guenther <rguenther@suse.de>

	* builtins.c (expand_builtin_mathfn): Expand nearbyint as
	rint in case -fno-trapping-math is enabled.
	* config/i386/i386-protos.h (ix86_expand_rint): Declare.
	* config/i386/i386.c (ix86_gen_TWO52): New static helper function.
	(ix86_expand_sse_fabs): Likewise.
	(ix86_expand_rint): New function expanding rint to x87 or SSE math.
	* config/i386/i386.md (rintdf2): Enable for SSE math if
        -fno-trapping-math is enabled, use ix86_expand_rint for expansion.
	(rintsf2): Likewise.

	* gcc.target/i386/math-torture/rint.c: New testcase.
	* gcc.target/i386/math-torture/nearbyint.c: Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@118144 138bc75d-0d04-0410-961f-82ee72b054a4