* cfgexpand.c (asm_clobber_reg_is_valid): Reject
	clobbers outside of accessible_reg_set.
	* config/i386/i386.c (ix86_conditional_register_usage):
	Disable register sets by clearing corresponding bits in
	accessible_reg_set.  Do not set corresponding bits in fixed_regs,
	call_used_regs and don't clear corresponding reg_names array members.

testsuite/ChangeLog:

	* gcc.target/i386/asm-7.c: New test.
	* gcc.target/i386/asm-1.c: Update expected error string.
	* gcc.target/i386/pr62120.c: Ditto.

From-SVN: r270955