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PR c++/49264 * gimple-fold.c (fold_stmt_1): Don't try to fold *& on the lhs if stmt folded into nothing. * tree-inline.c (fold_marked_statements): If a builtin at the end of a bb folded into nothing, just update cgraph edges and move to next bb. * cgraph.c (cgraph_update_edges_for_call_stmt_node): Allow new_stmt to be NULL. Don't compute count and frequency if new_call is NULL. * g++.dg/opt/pr49264.C: New test. From-SVN: r174711
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