re PR rtl-optimization/82628 (wrong code at -Os on x86_64-linux-gnu in the 32-bit...

re PR rtl-optimization/82628 (wrong code at -Os on x86_64-linux-gnu in the 32-bit mode)

	PR target/82628
	* config/i386/predicates.md (x86_64_dwzext_immediate_operand): New.
	* config/i386/constraints.md (Wf): New constraint.
	* config/i386/i386.md (UNSPEC_SBB): New unspec.
	(cmp<dwi>_doubleword): Removed.
	(sub<mode>3_carry_ccc, *sub<mode>3_carry_ccc_1): New patterns.
	(sub<mode>3_carry_ccgz): Use unspec instead of compare.
	* config/i386/i386.c (ix86_expand_branch) <case E_TImode>: Don't
	expand with cmp<dwi>_doubleword.  For LTU and GEU use
	sub<mode>3_carry_ccc instead of sub<mode>3_carry_ccgz and use CCCmode.

From-SVN: r254011