diff options
Diffstat (limited to 'gcc/tree-phinodes.c')
| -rw-r--r-- | gcc/tree-phinodes.c | 38 |
1 files changed, 15 insertions, 23 deletions
diff --git a/gcc/tree-phinodes.c b/gcc/tree-phinodes.c index a38a572..c4240e7 100644 --- a/gcc/tree-phinodes.c +++ b/gcc/tree-phinodes.c @@ -349,29 +349,6 @@ add_phi_arg (tree *phi, tree def, edge e) PHI_NUM_ARGS (*phi)++; } -/* Remove a PHI argument from PHI. BLOCK is the predecessor block where - the PHI argument is coming from. */ - -void -remove_phi_arg (tree phi, basic_block block) -{ - int i, num_elem = PHI_NUM_ARGS (phi); - - for (i = 0; i < num_elem; i++) - { - basic_block src_bb; - - src_bb = PHI_ARG_EDGE (phi, i)->src; - - if (src_bb == block) - { - remove_phi_arg_num (phi, i); - return; - } - } -} - - /* Remove the Ith argument from PHI's argument list. This routine assumes ordering of alternatives in the vector is not important and implements removal by swapping the last alternative with the alternative we want to @@ -400,6 +377,21 @@ remove_phi_arg_num (tree phi, int i) PHI_NUM_ARGS (phi)--; } +/* Remove all PHI arguments associated with edge E. */ + +void +remove_phi_args (edge e) +{ + tree phi; + + for (phi = phi_nodes (e->dest); phi; phi = PHI_CHAIN (phi)) + { + int index = phi_arg_from_edge (phi, e); + if (index >= 0) + remove_phi_arg_num (phi, index); + } +} + /* Remove PHI node PHI from basic block BB. If PREV is non-NULL, it is used as the node immediately before PHI in the linked list. */ |