Index: clang/test/CodeGen/x86_64-mno-sse.c
===================================================================
--- clang/test/CodeGen/x86_64-mno-sse.c
+++ clang/test/CodeGen/x86_64-mno-sse.c
@@ -1,15 +1,14 @@
 // RUN: %clang_cc1 -triple x86_64-linux -target-feature -sse -target-feature -sse2 -S -o /dev/null -verify %s
 // REQUIRES: x86-registered-target
 
-double f1(void) { // expected-error {{SSE register return with SSE disabled}}
+double f1(void) { // expected-warning {{SSE register return with SSE disabled}}
   return 1.4;
 }
 extern double g;
-void f2(void) { // expected-error {{SSE register return with SSE disabled}}
+void f2(void) { // expected-warning {{SSE register return with SSE disabled}}
   g = f1();
 }
 void take_double(double);
 void pass_double(void) {
-  // FIXME: Still asserts.
-  //take_double(1.5);
+  take_double(1.5);
 }
Index: clang/test/CodeGen/x86_64-mno-sse2.c
===================================================================
--- clang/test/CodeGen/x86_64-mno-sse2.c
+++ clang/test/CodeGen/x86_64-mno-sse2.c
@@ -1,11 +1,11 @@
 // RUN: %clang_cc1 -triple x86_64-linux -target-feature -sse2 -S -o /dev/null -verify %s
 // REQUIRES: x86-registered-target
 
-double f1(void) { // expected-error {{SSE2 register return with SSE2 disabled}}
+double f1(void) { // expected-warning {{SSE2 register return with SSE2 disabled}}
   return 1.4;
 }
 extern double g;
-void f2(void) { // expected-error {{SSE2 register return with SSE2 disabled}}
+void f2(void) { // expected-warning {{SSE2 register return with SSE2 disabled}}
   g = f1();
 }
 void take_double(double);
@@ -15,6 +15,6 @@
 }
 
 double return_double();
-void call_double(double *a) { // expected-error {{SSE2 register return with SSE2 disabled}}
+void call_double(double *a) { // expected-warning {{SSE2 register return with SSE2 disabled}}
   *a = return_double();
 }
Index: llvm/lib/Target/X86/X86ISelLowering.cpp
===================================================================
--- llvm/lib/Target/X86/X86ISelLowering.cpp
+++ llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -96,8 +96,8 @@
 static void errorUnsupported(SelectionDAG &DAG, const SDLoc &dl,
                              const char *Msg) {
   MachineFunction &MF = DAG.getMachineFunction();
-  DAG.getContext()->diagnose(
-      DiagnosticInfoUnsupported(MF.getFunction(), Msg, dl.getDebugLoc()));
+  DAG.getContext()->diagnose(DiagnosticInfoUnsupported(
+      MF.getFunction(), Msg, dl.getDebugLoc(), DS_Warning));
 }
 
 X86TargetLowering::X86TargetLowering(const X86TargetMachine &TM,