[Bug rtl-optimization/56195] [4.8 Regression] Error: incorrect register `%rdi' used with `l' suffix (at -O2)

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56195

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-02-08 15:19:05 UTC ---
Author: jakub
Date: Fri Feb  8 15:19:02 2013
New Revision: 195891

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195891
Log:
    PR rtl-optimization/56195
    * lra-constraints.c (get_reload_reg): Don't reuse regs
    if they have smaller mode than requested, if they have
    wider mode than requested, try to return a SUBREG.

    * gcc.dg/torture/pr56195.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr56195.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/lra-constraints.c
    trunk/gcc/testsuite/ChangeLog