[PATCH] D89804: [AMDGPU] Fix off by one in assert

[Sebastian Neubauer via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG5290f50e44b6: [AMDGPU] Fix off by one in assert (authored by sebastian-ne).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D89804/new/

https://reviews.llvm.org/D89804

Files:
  llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp


Index: llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
===================================================================
--- llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
+++ llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
@@ -98,9 +98,10 @@
       Width = SubRegFromChannelTableWidthMap[Width];
       if (Width == 0)
         continue;
-      assert((Width - 1) < SubRegFromChannelTable.size());
-      assert(Offset < SubRegFromChannelTable[Width].size());
-      SubRegFromChannelTable[Width - 1][Offset] = Idx;
+      unsigned TableIdx = Width - 1;
+      assert(TableIdx < SubRegFromChannelTable.size());
+      assert(Offset < SubRegFromChannelTable[TableIdx].size());
+      SubRegFromChannelTable[TableIdx][Offset] = Idx;
     }
   };
 


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