diff options
Diffstat (limited to 'gcc/tree-ssa-coalesce.c')
| -rw-r--r-- | gcc/tree-ssa-coalesce.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/tree-ssa-coalesce.c b/gcc/tree-ssa-coalesce.c index e4f576f..750fd83 100644 --- a/gcc/tree-ssa-coalesce.c +++ b/gcc/tree-ssa-coalesce.c @@ -620,7 +620,11 @@ ssa_conflicts_merge (ssa_conflicts *ptr, unsigned x, unsigned y) { bitmap bz = ptr->conflicts[z]; if (bz) - bitmap_set_bit (bz, x); + { + bool was_there = bitmap_clear_bit (bz, y); + gcc_checking_assert (was_there); + bitmap_set_bit (bz, x); + } } if (bx) |