Index: lib/Target/AMDGPU/SIRegisterInfo.h
===================================================================
--- lib/Target/AMDGPU/SIRegisterInfo.h
+++ lib/Target/AMDGPU/SIRegisterInfo.h
@@ -38,6 +38,9 @@
   unsigned getRegPressureSetLimit(const MachineFunction &MF,
                                   unsigned Idx) const override;
 
+  unsigned getRegPressureSetScore(const MachineFunction &MF,
+                                  unsigned PSetID) const override;
+
   bool requiresRegisterScavenging(const MachineFunction &Fn) const override;
 
   void eliminateFrameIndex(MachineBasicBlock::iterator MI, int SPAdj,
Index: lib/Target/AMDGPU/SIRegisterInfo.cpp
===================================================================
--- lib/Target/AMDGPU/SIRegisterInfo.cpp
+++ lib/Target/AMDGPU/SIRegisterInfo.cpp
@@ -121,6 +121,18 @@
   return VGPRLimit;
 }
 
+unsigned SIRegisterInfo::getRegPressureSetScore(const MachineFunction &MF,
+                                                    unsigned PSetID) const {
+  if (SGPRPressureSets.test(PSetID) && VGPRPressureSets.test(PSetID))
+    return 2;
+
+  if (SGPRPressureSets.test(PSetID))
+    return 1;
+
+  // VGPRS.
+  return 0;
+}
+
 bool SIRegisterInfo::requiresRegisterScavenging(const MachineFunction &Fn) const {
   return Fn.getFrameInfo()->hasStackObjects();
 }