[Bug rtl-optimization/38711] ira should not be using df-lr except at -O1.

[steven at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38711



--- Comment #1 from Steven Bosscher <steven at gcc dot gnu.org> 2012-10-12 
22:34:49 UTC ---

Created attachment 28438

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28438

Use DF_LIVE where possible in IRA



Only in reload1.c should we continue to use DF_LR

Bootstrapped on x86_64-unknown-linux-gnu.