auto -> unsigned

Author: jmmartinez

llvm/lib/Target/AMDGPU/GCNRegPressure.cpp

@@ -112,7 +112,7 @@ struct RegExcess {
     SGPR = std::max(static_cast<int>(RP.getSGPRNum() - MaxSGPRs), 0);
 
     // The number of virtual VGPRs required to handle excess SGPR
-    auto WaveSize = ST.getWavefrontSize();
+    unsigned WaveSize = ST.getWavefrontSize();
     unsigned VGPRForSGPRSpills = divideCeil(SGPR, WaveSize);
 
     unsigned MaxArchVGPRs = ST.getAddressableNumArchVGPRs();