diff options
Diffstat (limited to 'gcc/ssa.c')
| -rw-r--r-- | gcc/ssa.c | 13 |
1 files changed, 9 insertions, 4 deletions
@@ -1850,6 +1850,8 @@ compute_coalesced_reg_partition () { int bb; int changed = 0; + regset_head phi_set_head; + regset phi_set = &phi_set_head; partition p = partition_new (ssa_definition->num_elements); @@ -1861,20 +1863,21 @@ compute_coalesced_reg_partition () for (bb = n_basic_blocks; --bb >= 0; ) make_regs_equivalent_over_bad_edges (bb, p); + INIT_REG_SET (phi_set); + do { - regset_head phi_set; conflict_graph conflicts; changed = 0; /* Build the set of registers involved in phi nodes, either as arguments to the phi function or as the target of a set. */ - INITIALIZE_REG_SET (phi_set); - mark_phi_and_copy_regs (&phi_set); + CLEAR_REG_SET (phi_set); + mark_phi_and_copy_regs (phi_set); /* Compute conflicts. */ - conflicts = conflict_graph_compute (&phi_set, p); + conflicts = conflict_graph_compute (phi_set, p); /* FIXME: Better would be to process most frequently executed blocks first, so that most frequently executed copies would @@ -1892,6 +1895,8 @@ compute_coalesced_reg_partition () } while (changed > 0); + FREE_REG_SET (phi_set); + return p; } |