diff options
Diffstat (limited to 'gcc/ira-build.c')
| -rw-r--r-- | gcc/ira-build.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/gcc/ira-build.c b/gcc/ira-build.c index edb761b0d71..5f2ca4023fd 100644 --- a/gcc/ira-build.c +++ b/gcc/ira-build.c @@ -565,6 +565,53 @@ ira_allocate_allocno_conflicts (ira_allocno_t a, int num) allocate_allocno_conflict_bit_vec (a); } +/* Remove A2 from the conflicts of A1. */ +static void +remove_allocno_conflicts (ira_allocno_t a1, ira_allocno_t a2) +{ + int num, i; + + if (ALLOCNO_CONFLICT_VEC_P (a1)) + { + ira_allocno_t *vec + = (ira_allocno_t *) ALLOCNO_CONFLICT_ALLOCNO_ARRAY (a1); + num = ALLOCNO_CONFLICT_ALLOCNOS_NUM (a1) + 2; + + for (i = 0; i < num; i++) + if (vec[i] == a2) + { + num--; + if (i != num - 2) + vec[i] = vec[num - 2]; + vec[num - 2] = NULL; + ALLOCNO_CONFLICT_ALLOCNOS_NUM (a1)--; + } + } + else + { + int id = ALLOCNO_CONFLICT_ID (a2); + IRA_INT_TYPE *vec; + + if (id < ALLOCNO_MIN (a1) || id > ALLOCNO_MAX (a1)) + return; + + vec = (IRA_INT_TYPE *) ALLOCNO_CONFLICT_ALLOCNO_ARRAY (a1); + CLEAR_ALLOCNO_SET_BIT (vec, id, ALLOCNO_MIN (a1), ALLOCNO_MAX (a1)); + } +} + +/* Remove A from all conflicts. */ +void +remove_from_all_conflicts (ira_allocno_t to_remove) +{ + ira_allocno_conflict_iterator aci; + ira_allocno_t a; + + FOR_EACH_ALLOCNO_CONFLICT (to_remove, a, aci) + remove_allocno_conflicts (a, to_remove); +} + + /* Add A2 to the conflicts of A1. */ static void add_to_allocno_conflicts (ira_allocno_t a1, ira_allocno_t a2) |