[Bug target/52876] [x32] - Sign extend 32 to 64bit then clear upper 32bits fails O1 or higher

[steffen-schmidt at siemens dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52876

--- Comment #1 from Steffen Schmidt <steffen-schmidt at siemens dot com> 
2012-04-05 08:19:24 UTC ---
Created attachment 27097
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27097
Example code v2