diff options
| author | Eric Botcazou <ebotcazou@adacore.com> | 2009-02-09 11:09:25 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2009-02-09 11:09:25 +0000 |
| commit | 4bb07c5d3708bbab76c88458eb885a66c7ecf265 (patch) | |
| tree | a5a4fa014573b90d9d7e979aabb0ae0586189fe4 /gcc/tree-ssa-coalesce.c | |
| parent | f060a26123884c98f69ced61aea93dea895ea9eb (diff) | |
| download | gcc-4bb07c5d3708bbab76c88458eb885a66c7ecf265.zip gcc-4bb07c5d3708bbab76c88458eb885a66c7ecf265.tar.gz gcc-4bb07c5d3708bbab76c88458eb885a66c7ecf265.tar.bz2 | |
re PR middle-end/38981 (internal compiler error)
PR middle-end/38981
* tree-ssa-coalesce.c (add_coalesce): Cap the costs of coalesce pairs
at MUST_COALESCE_COST-1 instead of MUST_COALESCE_COST.
From-SVN: r144032
Diffstat (limited to 'gcc/tree-ssa-coalesce.c')
| -rw-r--r-- | gcc/tree-ssa-coalesce.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/gcc/tree-ssa-coalesce.c b/gcc/tree-ssa-coalesce.c index 3af0c32..8ac74f0 100644 --- a/gcc/tree-ssa-coalesce.c +++ b/gcc/tree-ssa-coalesce.c @@ -284,8 +284,7 @@ add_cost_one_coalesce (coalesce_list_p cl, int p1, int p2) /* Add a coalesce between P1 and P2 in list CL with a cost of VALUE. */ static inline void -add_coalesce (coalesce_list_p cl, int p1, int p2, - int value) +add_coalesce (coalesce_list_p cl, int p1, int p2, int value) { coalesce_pair_p node; @@ -295,13 +294,13 @@ add_coalesce (coalesce_list_p cl, int p1, int p2, node = find_coalesce_pair (cl, p1, p2, true); - /* Once the value is MUST_COALESCE_COST, leave it that way. */ - if (node->cost != MUST_COALESCE_COST) + /* Once the value is at least MUST_COALESCE_COST - 1, leave it that way. */ + if (node->cost < MUST_COALESCE_COST - 1) { - if (value == MUST_COALESCE_COST) - node->cost = value; - else + if (value < MUST_COALESCE_COST - 1) node->cost += value; + else + node->cost = value; } } |