Sync from rust 5bd5d21

Author: bjorn3

src/base.rs

@@ -682,7 +682,6 @@ fn codegen_stmt<'tcx>(
                                 args,
                                 ty::ClosureKind::FnOnce,
                             )
-                            .expect("failed to normalize and resolve closure during codegen")
                             .polymorphize(fx.tcx);
                             let func_ref = fx.get_function_ref(instance);
                             let func_addr = fx.bcx.ins().func_addr(fx.pointer_type, func_ref);

src/intrinsics/mod.rs

@@ -443,6 +443,12 @@ fn codegen_regular_intrinsic_call<'tcx>(
 
             ret.write_cvalue(fx, a);
         }
+        sym::is_val_statically_known => {
+            intrinsic_args!(fx, args => (_a); intrinsic);
+
+            let res = fx.bcx.ins().iconst(types::I8, 0);
+            ret.write_cvalue(fx, CValue::by_val(res, ret.layout()));
+        }
         sym::breakpoint => {
             intrinsic_args!(fx, args => (); intrinsic);