[lra] a patch to fix ppc bootstrap failure

[Vladimir Makarov <vmakarov at redhat dot com>]

After so many changes in LRA ppc target was broken.  The following patch 
fixes PPC bootstrap.

The patch was successfully bootstrapped on x86/x86-64 and PPC.

Committed as rev. 194180.

2012-12-05  Vladimir Makarov  <vmakarov@redhat.com>

        * rtl.h (struct rtx_def): Add comment for field jump.
        (SUBREG_MATCH_RELOAD_P): New macro.
        * lra-constraints.c (curr_insn_set): New.
        (match_reload): Use SUBREG_MATCH_RELOAD_P.
        (check_and_process_move): Use curr_insn_set. Process only single
        set insns.  Don't initialize sec_mem_p and change_p.
        (simplify_operand_subreg): Check SUBREG_MATCH_RELOAD_P.
        (process_alt_operands): Use #if HAVE_ATTR_enabled instead of
        #ifdef.  Add code to remove cycling.
        (process_address): Process even if non-null disp. Reload inner
        instead of disp when base and index are null.
        (curr_insn_transform): Initialize sec_mem_p and change_p.  Set up
        curr_insn_set.  Call check_and_process_move only for single set
        insns.
        * rs6000/rs6000.c (legitimate_lo_sum_address_p): Allow TFmode too.

Attachment: ppc-bootstrap2.patch
Description: Text document