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| author | Jeff Law <law@redhat.com> | 2017-01-09 14:53:02 -0700 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2017-01-09 14:53:02 -0700 |
| commit | b5acc7a1be7aac0e78ba3e8b556ce207c80ca728 (patch) | |
| tree | f725e213365dc523e7c666db36ce6bd6b5a436e7 /gcc/tree-ssa-alias.c | |
| parent | f4da28a0ab155d5bff5fe400efb2b5459e5429c8 (diff) | |
| download | gcc-b5acc7a1be7aac0e78ba3e8b556ce207c80ca728.zip gcc-b5acc7a1be7aac0e78ba3e8b556ce207c80ca728.tar.gz gcc-b5acc7a1be7aac0e78ba3e8b556ce207c80ca728.tar.bz2 | |
re PR tree-optimization/79007 (gcc.dg/tree-ssa/dse-points-to.c fails starting with r244067)
PR tree-optimization/79007
PR tree-optimization/67955
* tree-ssa-alias.c (same_addr_size_stores_p): Only need to be
conservative for pt.null when flag_non_call_exceptions is on.
From-SVN: r244247
Diffstat (limited to 'gcc/tree-ssa-alias.c')
| -rw-r--r-- | gcc/tree-ssa-alias.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c index 871fa12..83fa6f5 100644 --- a/gcc/tree-ssa-alias.c +++ b/gcc/tree-ssa-alias.c @@ -2373,9 +2373,9 @@ same_addr_size_stores_p (tree base1, HOST_WIDE_INT offset1, HOST_WIDE_INT size1, || !pt_solution_singleton_or_null_p (&pi->pt, &pt_uid)) return false; - /* If the solution has a singleton and NULL, then we can not - be sure that the two stores hit the same address. */ - if (pi->pt.null) + /* Be conservative with non-call exceptions when the address might + be NULL. */ + if (flag_non_call_exceptions && pi->pt.null) return false; /* Check that ptr points relative to obj. */ |