From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Fri, 19 Sep 2014 12:26:38 +0000 (+0000)
Subject: Elide unnecessary DenseMap copy.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=b845a6fe6d6ff09e935f6c9fe09e9b672b1290cd;p=oota-llvm.git

Elide unnecessary DenseMap copy.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218122 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/MC/ELFObjectWriter.cpp b/lib/MC/ELFObjectWriter.cpp
index 5779b27a2c4..a36f3143e14 100644
--- a/lib/MC/ELFObjectWriter.cpp
+++ b/lib/MC/ELFObjectWriter.cpp
@@ -246,7 +246,7 @@ class ELFObjectWriter : public MCObjectWriter {
     /// \param NumRegularSections - Number of non-relocation sections.
     void computeSymbolTable(MCAssembler &Asm, const MCAsmLayout &Layout,
                             const SectionIndexMapTy &SectionIndexMap,
-                            RevGroupMapTy RevGroupMap,
+                            const RevGroupMapTy &RevGroupMap,
                             unsigned NumRegularSections);
 
     void ComputeIndexMap(MCAssembler &Asm,
@@ -991,7 +991,7 @@ void ELFObjectWriter::ComputeIndexMap(MCAssembler &Asm,
 void
 ELFObjectWriter::computeSymbolTable(MCAssembler &Asm, const MCAsmLayout &Layout,
                                     const SectionIndexMapTy &SectionIndexMap,
-                                    RevGroupMapTy RevGroupMap,
+                                    const RevGroupMapTy &RevGroupMap,
                                     unsigned NumRegularSections) {
   // FIXME: Is this the correct place to do this?
   // FIXME: Why is an undefined reference to _GLOBAL_OFFSET_TABLE_ needed?
@@ -1037,7 +1037,7 @@ ELFObjectWriter::computeSymbolTable(MCAssembler &Asm, const MCAsmLayout &Layout,
       MSD.SectionIndex = ELF::SHN_COMMON;
     } else if (BaseSymbol->isUndefined()) {
       if (isSignature && !Used)
-        MSD.SectionIndex = SectionIndexMap.lookup(RevGroupMap[&Symbol]);
+        MSD.SectionIndex = SectionIndexMap.lookup(RevGroupMap.lookup(&Symbol));
       else
         MSD.SectionIndex = ELF::SHN_UNDEF;
       if (!Used && WeakrefUsed)