[Bug rtl-optimization/53908] [4.7 Regression] csa removes needed memory load

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53908

--- Comment #4 from Mikael Pettersson <mikpe at it dot uu.se> 2012-07-10 
19:55:25 UTC ---
My mistake, I can now reproduce the runtime SEGV on x86_64-linux with vanilla
gcc-4.7-20120707.