[llvm] [TableGen] Add mapping from processor ID to resource index for packetizer (PR #158182)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/utils/TableGen/DFAPacketizerEmitter.cpp
``````````

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``````````diff
diff --git a/llvm/utils/TableGen/DFAPacketizerEmitter.cpp b/llvm/utils/TableGen/DFAPacketizerEmitter.cpp
index c8816423c..a6b48bc4d 100644
--- a/llvm/utils/TableGen/DFAPacketizerEmitter.cpp
+++ b/llvm/utils/TableGen/DFAPacketizerEmitter.cpp
@@ -278,9 +278,12 @@ void DFAPacketizerEmitter::emitForItineraries(
   }
   OS << "  };\n"
      << "  auto It = std::lower_bound(\n"
-     << "      std::begin(" << TargetName << DFAName << "ProcIdToProcResourceIdxTable),\n"
-     << "      std::end(" << TargetName << DFAName << "ProcIdToProcResourceIdxTable), ProcID,\n"
-     << "      [](const unsigned LHS[], unsigned Val) { return LHS[0] < Val; });\n"
+     << "      std::begin(" << TargetName << DFAName
+     << "ProcIdToProcResourceIdxTable),\n"
+     << "      std::end(" << TargetName << DFAName
+     << "ProcIdToProcResourceIdxTable), ProcID,\n"
+     << "      [](const unsigned LHS[], unsigned Val) { return LHS[0] < Val; "
+        "});\n"
      << "  return (*It)[1];\n"
      << "}\n\n";
 

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https://github.com/llvm/llvm-project/pull/158182