[Bug target/55981] std::atomic store is split in two smaller stores

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55981



--- Comment #5 from Uros Bizjak <ubizjak at gmail dot com> 2013-01-15 14:22:14 
UTC ---

Obviously, not all DImode immediates are atomic. I have a patch that prohibits

moves of immediates that do not satisfy "e" constraints to volatile memories.