Update test to cover use of flags from new driver

Author: kavon

test/Profiler/samplepgo.swift

@@ -5,10 +5,14 @@
 // Test the -profile-sample-use= flag using bogus data, to ensure it's actually
 // reaching LLVM in the expected way.
 
-// RUN: %target-swift-frontend %t/program.swift -module-name test -emit-ir \
-// RUN:                  -O -profile-sample-use=%t/profile.txt -o %t/has-data.ll
+// RUN: %target-swiftc_driver -v %t/program.swift -module-name test -emit-ir \
+// RUN:                -O -profile-sample-use=%t/profile.txt -o %t/has-data.ll \
+// RUN:                > %t/flags.txt
+
+// RUN: %FileCheck %s --check-prefix CHECK-STDERR --input-file %t/flags.txt
+// CHECK-STDERR: -Xllvm -sample-profile-use-profi
 
-// RUN: %FileCheck %s < %t/has-data.ll
+// RUN: %FileCheck %s --input-file %t/has-data.ll
 
 // CHECK: define{{.*}} @"$s4test8anythingyyF"() #[[ATTRID:[0-9]+]]
 // CHECK: attributes #[[ATTRID]] = {{.*}} "use-sample-profile"