Index: llvm/trunk/lib/Target/AMDGPU/GCNIterativeScheduler.cpp
===================================================================
--- llvm/trunk/lib/Target/AMDGPU/GCNIterativeScheduler.cpp
+++ llvm/trunk/lib/Target/AMDGPU/GCNIterativeScheduler.cpp
@@ -433,7 +433,7 @@
 // Sort recorded regions by pressure - highest at the front
 void GCNIterativeScheduler::sortRegionsByPressure(unsigned TargetOcc) {
   const auto &ST = MF.getSubtarget<SISubtarget>();
-  std::sort(Regions.begin(), Regions.end(),
+  llvm::sort(Regions.begin(), Regions.end(),
     [&ST, TargetOcc](const Region *R1, const Region *R2) {
     return R2->MaxPressure.less(ST, R1->MaxPressure, TargetOcc);
   });