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| author | Richard Biener <rguenther@suse.de> | 2018-09-14 06:59:21 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2018-09-14 06:59:21 +0000 |
| commit | 7efd5ff31df5ac69a23b6285474f0b50154801f7 (patch) | |
| tree | c50fc83ddcba67a0c4c6a147022c6b31c039d141 /gcc/tree-ssa-coalesce.c | |
| parent | 6ab24ea809555eeb869fe49595f22ed9c8737cc4 (diff) | |
| download | gcc-7efd5ff31df5ac69a23b6285474f0b50154801f7.zip gcc-7efd5ff31df5ac69a23b6285474f0b50154801f7.tar.gz gcc-7efd5ff31df5ac69a23b6285474f0b50154801f7.tar.bz2 | |
re PR middle-end/63155 (memory hog)
2018-09-14 Richard Biener <rguenther@suse.de>
PR middle-end/63155
* tree-ssa-coalesce.c (ssa_conflicts_merge): Remove conflict
bits for the merged partition.
From-SVN: r264304
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) |