Index: test/Misc/backend-optimization-failure-nodbg.cpp
===================================================================
--- test/Misc/backend-optimization-failure-nodbg.cpp
+++ test/Misc/backend-optimization-failure-nodbg.cpp
@@ -4,7 +4,7 @@
 // Test verifies optimization failures generated by the backend are handled
 // correctly by clang. LLVM tests verify all of the failure conditions.
 
-void test_switch(int *A, int *B, int Length, int J) { /* expected-warning {{loop not vectorized: failed explicitly specified loop vectorization}} */
+void test_switch(int *A, int *B, int Length, int J) { /* expected-warning {{loop not vectorized: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering}} */
 #pragma clang loop vectorize(enable) unroll(disable)
   for (int i = 0; i < Length; i++) {
     switch (A[i]) {
Index: test/Misc/backend-optimization-failure.cpp
===================================================================
--- test/Misc/backend-optimization-failure.cpp
+++ test/Misc/backend-optimization-failure.cpp
@@ -7,7 +7,7 @@
 void test_switch(int *A, int *B, int Length,int J) {
 #pragma clang loop vectorize(enable) unroll(disable)
   for (int i = 0; i < Length; i++) {
-/* expected-warning@-1 {{loop not vectorized: failed explicitly specified loop vectorization}} */ switch (A[i]) {
+/* expected-warning@-1 {{loop not vectorized: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering}} */ switch (A[i]) {
     case 0:
       B[i] = 1;
       break;