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| author | Alexander Monakov <amonakov@ispras.ru> | 2022-01-14 20:51:12 +0300 |
|---|---|---|
| committer | Alexander Monakov <amonakov@ispras.ru> | 2022-07-19 17:16:17 +0300 |
| commit | 26cea5f108e0facdb080e385000bb141b086845f (patch) | |
| tree | ff8fb6fd44e6609fcf03e6b331165cd38107246c /gcc/gimple-range-cache.h | |
| parent | 76c3f0dc2f815e0e450642efd5348c3ab852e4d0 (diff) | |
| download | gcc-26cea5f108e0facdb080e385000bb141b086845f.zip gcc-26cea5f108e0facdb080e385000bb141b086845f.tar.gz gcc-26cea5f108e0facdb080e385000bb141b086845f.tar.bz2 | |
tree-cfg: do not duplicate returns_twice calls
A returns_twice call may have associated abnormal edges that correspond
to the "second return" from the call. If the call is duplicated, the
copies of those edges also need to be abnormal, but e.g. tracer does not
enforce that. Just prohibit the (unlikely to be useful) duplication.
gcc/ChangeLog:
* cfghooks.cc (duplicate_block): Expand comment.
* tree-cfg.cc (gimple_can_duplicate_bb_p): Reject blocks with
calls that may return twice.
Diffstat (limited to 'gcc/gimple-range-cache.h')
0 files changed, 0 insertions, 0 deletions