diff options
Diffstat (limited to 'gcc/tree-ssa-sink.cc')
| -rw-r--r-- | gcc/tree-ssa-sink.cc | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/tree-ssa-sink.cc b/gcc/tree-ssa-sink.cc index 9213052017a..eb7c2e6819c 100644 --- a/gcc/tree-ssa-sink.cc +++ b/gcc/tree-ssa-sink.cc @@ -263,12 +263,13 @@ statement_sink_location (gimple *stmt, basic_block frombb, *zero_uses_p = false; - /* We only can sink assignments and non-looping const/pure calls. */ + /* We only can sink assignments and const/pure calls that are guaranteed + to return exactly once. */ int cf; if (!is_gimple_assign (stmt) && (!is_gimple_call (stmt) || !((cf = gimple_call_flags (stmt)) & (ECF_CONST|ECF_PURE)) - || (cf & ECF_LOOPING_CONST_OR_PURE))) + || (cf & (ECF_LOOPING_CONST_OR_PURE|ECF_RETURNS_TWICE)))) return false; /* We only can sink stmts with a single definition. */ |