[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