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Diffstat (limited to 'gcc/tree-ssa-alias.c')
| -rw-r--r-- | gcc/tree-ssa-alias.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c index 315a252..ba76ae1 100644 --- a/gcc/tree-ssa-alias.c +++ b/gcc/tree-ssa-alias.c @@ -1633,7 +1633,14 @@ stmt_kills_ref_p_1 (gimple stmt, ao_ref *ref) return false; if (gimple_has_lhs (stmt) - && TREE_CODE (gimple_get_lhs (stmt)) != SSA_NAME) + && TREE_CODE (gimple_get_lhs (stmt)) != SSA_NAME + /* The assignment is not necessarily carried out if it can throw + and we can catch it in the current function where we could inspect + the previous value. + ??? We only need to care about the RHS throwing. For aggregate + assignments or similar calls and non-call exceptions the LHS + might throw as well. */ + && !stmt_can_throw_internal (stmt)) { tree base, lhs = gimple_get_lhs (stmt); HOST_WIDE_INT size, offset, max_size; |