[Bug c++/58717] Pre-calculation optimization is omitted

[masoud_mxm at yahoo dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58717

--- Comment #1 from masoud_mxm at yahoo dot com ---
Comment on attachment 30997
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30997
Two .cpp source code

Tests are made in MinGW/32bit.