| Message ID | 20221005002423.710736-1-dmalcolm@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | [committed] analyzer: fold -(-(VAL)) to VAL | expand |
diff --git a/gcc/analyzer/region-model-manager.cc b/gcc/analyzer/region-model-manager.cc index ed5b9c75910..1956cfc3e8d 100644 --- a/gcc/analyzer/region-model-manager.cc +++ b/gcc/analyzer/region-model-manager.cc @@ -432,6 +432,17 @@ region_model_manager::maybe_fold_unaryop (tree type, enum tree_code op, } } break; + case NEGATE_EXPR: + { + /* -(-(VAL)) is VAL, for integer types. */ + if (const unaryop_svalue *unaryop = arg->dyn_cast_unaryop_svalue ()) + if (unaryop->get_op () == NEGATE_EXPR + && type == unaryop->get_type () + && type + && INTEGRAL_TYPE_P (type)) + return unaryop->get_arg (); + } + break; } /* Constants. */
Successfully bootstrapped & regrtested on x86_64-pc-linux-gnu. Pushed to trunk as r13-3075-g7f42f7adfa69fe. gcc/analyzer/ChangeLog: * region-model-manager.cc (region_model_manager::maybe_fold_unaryop): Fold -(-(VAL)) to VAL. Signed-off-by: David Malcolm <dmalcolm@redhat.com> --- gcc/analyzer/region-model-manager.cc | 11 +++++++++++ 1 file changed, 11 insertions(+)