[Bug rtl-optimization/47337] [4.6 Regression] Wrong RTL dce of calls

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47337

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-18 
09:58:04 UTC ---
Created attachment 23016
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23016
gcc46-pr47337.patch

Untested fix.  Thanks for the report.