i386.h (LIMIT_RELOAD_CLASS): Return preferred single unit register class for classes that contain registers...

	* config/i386/i386.h (LIMIT_RELOAD_CLASS): Return preferred
	single unit register class for classes that contain registers form
	multiple units.
	(REG_CLASS_CONTENTS): Add missing "frame" register to FLOAT_INT_REGS,
	INT_SSE_REGS and FLOAT_INT_SSE_REGS register classes.

testsuite/ChangeLog:

	* gcc.c-torture/compile/20120727-1.c (dg-options): Add -mfpmath=387
	for x86 targets.
	* gcc.c-torture/compile/20120727-2.c: New test.

From-SVN: r190261