Update test to check for prologue instead of prefix

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@223191 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGenCXX/catch-undef-behavior.cpp

@@ -389,7 +389,7 @@ void downcast_reference(B &b) {
   // CHECK-NEXT: br i1 [[AND]]
 }
 
-// CHECK-LABEL: @_Z22indirect_function_callPFviE({{.*}} prefix <{ i32, i8* }> <{ i32 1413876459, i8* bitcast ({ i8*, i8* }* @_ZTIFvPFviEE to i8*) }>
+// CHECK-LABEL: @_Z22indirect_function_callPFviE({{.*}} prologue <{ i32, i8* }> <{ i32 1413876459, i8* bitcast ({ i8*, i8* }* @_ZTIFvPFviEE to i8*) }>
 void indirect_function_call(void (*p)(int)) {
   // CHECK: [[PTR:%[0-9]*]] = bitcast void (i32)* {{.*}} to <{ i32, i8* }>*