fix Issue 9974 - immutable class constructor is broken
Merge pull request #1918 from 9rnsr/fix9974

Issue 9974 - immutable class constructor is broken
Merge remote-tracking branch 'upstream/master' into patch-1
use SETcc instructions
Merge pull request #1917 from WalterBright/useSETcc

use SETcc instructions
Merge remote-tracking branch 'upstream/master' into patch-1