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/i386.md (addcarry<mode>, subborrow<mode>): Change
	patterns to better describe from which operation the CF is computed.
	(addcarry<mode>_0, subborrow<mode>_0): New patterns.
	* config/i386/i386.c (ix86_expand_builtin) <case handlecarry>: Pass
	one LTU with [DT]Imode and another one with [SD]Imode.  If arg0
	is 0, use _0 suffixed expanders instead of emitting a comparison
	before it.

From-SVN: r254039