I committed the following patch to speed up the elimination patch (rev.
192262).
The patch was successfully bootstrapped on x86/x86-64.
2012-10-09 Vladimir Makarov <vmaka...@redhat.com>
* lra-eliminations.c (lra_eliminate): Use direct access to insns
through lra_insn_recog_data for process_insn_for_elimination.
Index: lra-eliminations.c
===================================================================
--- lra-eliminations.c (revision 192169)
+++ lra-eliminations.c (working copy)
@@ -1291,9 +1291,10 @@ void
lra_eliminate (bool final_p)
{
int i;
- basic_block bb;
- rtx insn, temp, mem_loc, invariant;
+ unsigned int uid;
+ rtx mem_loc, invariant;
bitmap_head insns_with_changed_offsets;
+ bitmap_iterator bi;
struct elim_table *ep;
int regs_num = max_reg_num ();
@@ -1344,12 +1345,8 @@ lra_eliminate (bool final_p)
fprintf (lra_dump_file,
"Updating elimination of equiv for reg %d\n", i);
}
- FOR_EACH_BB (bb)
- FOR_BB_INSNS_SAFE (bb, insn, temp)
- {
- if (bitmap_bit_p (&insns_with_changed_offsets, INSN_UID (insn)))
- process_insn_for_elimination (insn, final_p);
- }
+ EXECUTE_IF_SET_IN_BITMAP (&insns_with_changed_offsets, 0, uid, bi)
+ process_insn_for_elimination (lra_insn_recog_data[uid]->insn, final_p);
bitmap_clear (&insns_with_changed_offsets);
lra_eliminate_done:
