Index: compiler-rt/trunk/lib/xray/xray_init.cc
===================================================================
--- compiler-rt/trunk/lib/xray/xray_init.cc
+++ compiler-rt/trunk/lib/xray/xray_init.cc
@@ -49,7 +49,8 @@
 void __xray_init() XRAY_NEVER_INSTRUMENT {
   initializeFlags();
   if (__start_xray_instr_map == nullptr) {
-    Report("XRay instrumentation map missing. Not initializing XRay.\n");
+    if (Verbosity())
+      Report("XRay instrumentation map missing. Not initializing XRay.\n");
     return;
   }
 
Index: compiler-rt/trunk/test/xray/TestCases/Linux/quiet-start.cc
===================================================================
--- compiler-rt/trunk/test/xray/TestCases/Linux/quiet-start.cc
+++ compiler-rt/trunk/test/xray/TestCases/Linux/quiet-start.cc
@@ -0,0 +1,22 @@
+// Ensure that we have a quiet startup when we don't have the XRay
+// instrumentation sleds.
+//
+// RUN: %clangxx -std=c++11 %s -o %t %xraylib
+// RUN: XRAY_OPTIONS="patch_premain=true verbosity=1" %run %t 2>&1 | \
+// RUN:    FileCheck %s --check-prefix NOISY
+// RUN: XRAY_OPTIONS="patch_premain=true verbosity=0" %run %t 2>&1 | \
+// RUN:    FileCheck %s --check-prefix QUIET
+// RUN: XRAY_OPTIONS="" %run %t 2>&1 | FileCheck %s --check-prefix DEFAULT
+#include <iostream>
+
+using namespace std;
+
+int main(int, char**) {
+  // NOISY: {{.*}}XRay instrumentation map missing. Not initializing XRay.
+  // QUIET-NOT: {{.*}}XRay instrumentation map missing. Not initializing XRay.
+  // DEFAULT-NOT: {{.*}}XRay instrumentation map missing. Not initializing XRay.
+  cout << "Hello, XRay!" << endl;
+  // NOISY-NEXT: Hello, XRay!
+  // QUIET: Hello, XRay!
+  // DEFAULT: Hello, XRay!
+}
Index: compiler-rt/trunk/test/xray/lit.cfg
===================================================================
--- compiler-rt/trunk/test/xray/lit.cfg
+++ compiler-rt/trunk/test/xray/lit.cfg
@@ -31,6 +31,11 @@
     ('%clangxx_xray', build_invocation(clang_xray_cxxflags)))
 config.substitutions.append(
     ('%llvm_xray', llvm_xray))
+config.substitutions.append(
+    ('%xraylib',
+        ('-lm -lpthread -ldl -lrt -L%s '
+         '-Wl,-whole-archive -lclang_rt.xray-%s -Wl,-no-whole-archive')
+        % (config.compiler_rt_libdir, config.host_arch)))
 
 # Default test suffixes.
 config.suffixes = ['.c', '.cc', '.cpp']