Libcall abi fix

Author: bjorn3

src/abi/mod.rs

@@ -155,16 +155,16 @@ impl<'tcx> FunctionCx<'_, '_, 'tcx> {
             (params, args.into())
         };
 
-        let ret_single_i128 = returns.len() == 1 && returns[0].value_type == types::I128;
-        if ret_single_i128 && self.tcx.sess.target.is_like_windows {
-            // Return i128 using the vector ABI on Windows
+        let ret_single_if128 = returns.len() == 1 && returns[0].value_type.bits() == 128;
+        if ret_single_if128 && self.tcx.sess.target.is_like_windows {
+            // Return i128/f128 using the vector ABI on Windows
             returns[0].value_type = types::I64X2;
 
             let ret = self.lib_call_unadjusted(name, params, returns, &args)[0];
 
             Cow::Owned(vec![codegen_bitcast(self, types::I128, ret)])
-        } else if ret_single_i128 && self.tcx.sess.target.arch == "s390x" {
-            // Return i128 using a return area pointer on s390x.
+        } else if ret_single_if128 && self.tcx.sess.target.arch == "s390x" {
+            // Return i128/f128 using a return area pointer on s390x.
             let mut params = params;
             let mut args = args.to_vec();