Flag "-emit-ir" is needed to trigger crash.

Author: practicalswift

validation-test/compiler_crashers/28342-getpointerelementtype-is-not-storagetype.swift

@@ -5,7 +5,7 @@
 // See http://swift.org/LICENSE.txt for license information
 // See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 
-// RUN: not --crash %target-swift-frontend %s -emit-silgen
+// RUN: not --crash %target-swift-frontend %s -emit-ir
 // REQUIRES: asserts
 protocol A {
     associatedtype B