r200269 - in /branches/gcc-4_8-branch/gcc: Chan...

[wmi@gcc.gnu.org]

Author: wmi
Date: Thu Jun 20 21:15:52 2013
New Revision: 200269

URL: http://gcc.gnu.org/viewcvs?rev=200269&root=gcc&view=rev
Log:
2013-06-20  Wei Mi  <wmi@google.com>

gcc/    
        PR rtl-optimization/57518
        * ira.c (set_paradoxical_subreg): Set pdx_subregs[regno]
        if regno is used in paradoxical subreg.
        (update_equiv_regs): Check pdx_subregs[regno] before
        set a reg to be equivalent with a mem.

gcc/testsuite
        PR rtl-optimization/57518
        * testsuite/gcc.dg/pr57518.c: New test.


Added:
    branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/pr57518.c
Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/ira.c
    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog