[PATCH] D145779: [BOLT][NFC] Improve performance of MCPlusBuilder::initAliases

[Amir Ayupov via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rG4875e0670926: [BOLT][NFC] Improve performance of MCPlusBuilder::initAliases (authored by jobnoorman, committed by Amir).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D145779/new/

https://reviews.llvm.org/D145779

Files:
  bolt/lib/Core/MCPlusBuilder.cpp


Index: bolt/lib/Core/MCPlusBuilder.cpp
===================================================================
--- bolt/lib/Core/MCPlusBuilder.cpp
+++ bolt/lib/Core/MCPlusBuilder.cpp
@@ -464,17 +464,9 @@
   }
 
   // Propagate smaller alias info upwards. Skip reg 0 (mapped to NoRegister)
-  std::queue<MCPhysReg> Worklist;
   for (MCPhysReg I = 1, E = RegInfo->getNumRegs(); I < E; ++I)
-    Worklist.push(I);
-  while (!Worklist.empty()) {
-    MCPhysReg I = Worklist.front();
-    Worklist.pop();
     for (MCSubRegIterator SI(I, RegInfo); SI.isValid(); ++SI)
       SmallerAliasMap[I] |= SmallerAliasMap[*SI];
-    for (MCSuperRegIterator SI(I, RegInfo); SI.isValid(); ++SI)
-      Worklist.push(*SI);
-  }
 
   LLVM_DEBUG({
     dbgs() << "Dumping reg alias table:\n";


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