[PATCH] D78775: [MC] Fix quadratic behavior in addPendingLabel

[Alexandre Ganea via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rGfd773e8a51b8: Re-land [MC] Fix quadratic behavior in addPendingLabel (authored by aganea).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D78775/new/

https://reviews.llvm.org/D78775

Files:
  llvm/include/llvm/MC/MCObjectStreamer.h
  llvm/lib/MC/MCObjectStreamer.cpp


Index: llvm/lib/MC/MCObjectStreamer.cpp
===================================================================
--- llvm/lib/MC/MCObjectStreamer.cpp
+++ llvm/lib/MC/MCObjectStreamer.cpp
@@ -59,12 +59,8 @@
     CurSection->addPendingLabel(S, CurSubsectionIdx);
 
     // Add this Section to the list of PendingLabelSections.
-    auto SecIt = std::find(PendingLabelSections.begin(),
-                           PendingLabelSections.end(), CurSection);
-    if (SecIt == PendingLabelSections.end())
-      PendingLabelSections.push_back(CurSection);
-  }
-  else
+    PendingLabelSections.insert(CurSection);
+  } else
     // There is no Section / Subsection for this label yet.
     PendingLabels.push_back(S);
 }
Index: llvm/include/llvm/MC/MCObjectStreamer.h
===================================================================
--- llvm/include/llvm/MC/MCObjectStreamer.h
+++ llvm/include/llvm/MC/MCObjectStreamer.h
@@ -9,6 +9,7 @@
 #ifndef LLVM_MC_MCOBJECTSTREAMER_H
 #define LLVM_MC_MCOBJECTSTREAMER_H
 
+#include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/MC/MCAssembler.h"
 #include "llvm/MC/MCSection.h"
@@ -38,7 +39,7 @@
   bool EmitEHFrame;
   bool EmitDebugFrame;
   SmallVector<MCSymbol *, 2> PendingLabels;
-  SmallVector<MCSection*, 2> PendingLabelSections;
+  SmallSetVector<MCSection *, 4> PendingLabelSections;
   unsigned CurSubsectionIdx;
   struct PendingMCFixup {
     const MCSymbol *Sym;


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