Index: lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.h
===================================================================
--- lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.h
+++ lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.h
@@ -45,8 +45,7 @@
 bool isGlobalSegment(const GlobalValue *GV);
 bool isReadOnlySegment(const GlobalValue *GV);
 
-unsigned getIntegerAttribute(const Function &F, StringRef Name,
-                             unsigned Default);
+int getIntegerAttribute(const Function &F, StringRef Name, int Default);
 
 unsigned getMaximumWorkGroupSize(const Function &F);
 unsigned getInitialPSInputAddr(const Function &F);
Index: lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.cpp
===================================================================
--- lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.cpp
+++ lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.cpp
@@ -109,18 +109,18 @@
   return GV->getType()->getAddressSpace() == AMDGPUAS::CONSTANT_ADDRESS;
 }
 
-unsigned getIntegerAttribute(const Function &F, StringRef Name,
-                             unsigned Default) {
+int getIntegerAttribute(const Function &F, StringRef Name, int Default) {
   Attribute A = F.getFnAttribute(Name);
-  unsigned Result = Default;
+  int Result = Default;
 
   if (A.isStringAttribute()) {
     StringRef Str = A.getValueAsString();
     if (Str.getAsInteger(0, Result)) {
       LLVMContext &Ctx = F.getContext();
-      Ctx.emitError("can't parse shader type");
+      Ctx.emitError("can't parse integer attribute " + Name);
     }
   }
+
   return Result;
 }