AMDGPU/SI: Make a function const

llvm-svn: 290185
diff --git a/llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h b/llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h
index f4c210f..3b4e233 100644
--- a/llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h
+++ b/llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h
@@ -122,7 +122,7 @@
   std::array<int, 3> DebuggerWorkItemIDStackObjectIndices;
 
   AMDGPUBufferPseudoSourceValue BufferPSV;
-  std::unique_ptr<AMDGPUImagePseudoSourceValue> ImagePSV;
+  AMDGPUImagePseudoSourceValue ImagePSV;
 
 public:
   // FIXME: Make private
@@ -490,8 +490,8 @@
     return &BufferPSV;
   }
 
-  AMDGPUImagePseudoSourceValue *getImagePSV() {
-    return ImagePSV.get();
+  const AMDGPUImagePseudoSourceValue *getImagePSV() const {
+    return &ImagePSV;
   }
 };