Lower the rest of the vector arithmetic operations.

crosstest/test_arith_frem.ll

Index: crosstest/test_arith_frem.ll
diff --git a/crosstest/test_arith_frem.ll b/crosstest/test_arith_frem.ll
index 34b715677168186fbdbb6b3cd1d5666f1cc2ac48..bb0590d0eb879a8beeee00b20da992039bd83b8c 100644
--- a/crosstest/test_arith_frem.ll
+++ b/crosstest/test_arith_frem.ll
@@ -9,3 +9,8 @@ define double @_Z6myFremdd(double %a, double %b) {
   %rem = frem double %a, %b
   ret double %rem
 }
+
+define <4 x float> @_Z6myFremDv4_fS_(<4 x float> %a, <4 x float> %b) {
+  %rem = frem <4 x float> %a, %b
+  ret <4 x float> %rem
+}