PR target/64338
	* config/i386/i386.c (ix86_expand_int_movcc): Don't reverse
	compare_code when it is unconditionally overwritten afterwards.
	Use ix86_reverse_condition instead of reverse_condition.  Don't
	change code if *reverse_condition* returned UNKNOWN and don't
	swap ct/cf and negate diff in that case.

	* g++.dg/opt/pr64338.C: New test.

From-SVN: r219356