Spread some const around for non-mutating uses of MCSymbolData.

I discovered this const-hole while attempting to coalesnce the Symbol
and SymbolMap data structures. There's some pending issues with that,
but I figured this change was easy to flush early.

llvm-svn: 207124

3 files changed, 5 insertions, 5 deletions

diff --git a/llvm/lib/MC/ELFObjectWriter.cpp b/llvm/lib/MC/ELFObjectWriter.cpp
index f11ec79210a..06f295c249e 100644
--- a/llvm/lib/MC/ELFObjectWriter.cpp
+++ b/llvm/lib/MC/ELFObjectWriter.cpp
@@ -925,7 +925,7 @@ void ELFObjectWriter::RecordRelocation(const MCAssembler &Asm,
 uint64_t
 ELFObjectWriter::getSymbolIndexInSymbolTable(const MCAssembler &Asm,
                                              const MCSymbol *S) {
-  MCSymbolData &SD = Asm.getSymbolData(*S);
+  const MCSymbolData &SD = Asm.getSymbolData(*S);
   return SD.getIndex();
 }
 
diff --git a/llvm/lib/MC/MCExpr.cpp b/llvm/lib/MC/MCExpr.cpp
index 5b06104bf73..300613530ae 100644
--- a/llvm/lib/MC/MCExpr.cpp
+++ b/llvm/lib/MC/MCExpr.cpp
@@ -506,8 +506,8 @@ static void AttemptToFoldSymbolOffsetDifference(const MCAssembler *Asm,
   if (!Asm->getWriter().IsSymbolRefDifferenceFullyResolved(*Asm, A, B, InSet))
     return;
 
-  MCSymbolData &AD = Asm->getSymbolData(SA);
-  MCSymbolData &BD = Asm->getSymbolData(SB);
+  const MCSymbolData &AD = Asm->getSymbolData(SA);
+  const MCSymbolData &BD = Asm->getSymbolData(SB);
 
   if (AD.getFragment() == BD.getFragment()) {
     Addend += (AD.getOffset() - BD.getOffset());
diff --git a/llvm/lib/MC/WinCOFFObjectWriter.cpp b/llvm/lib/MC/WinCOFFObjectWriter.cpp
index 46af32ba639..60e046ec4fe 100644
--- a/llvm/lib/MC/WinCOFFObjectWriter.cpp
+++ b/llvm/lib/MC/WinCOFFObjectWriter.cpp
@@ -686,7 +686,7 @@ void WinCOFFObjectWriter::RecordRelocation(const MCAssembler &Asm,
         Fixup.getLoc(),
         Twine("symbol '") + A.getName() + "' can not be undefined");
 
-  MCSymbolData &A_SD = Asm.getSymbolData(A);
+  const MCSymbolData &A_SD = Asm.getSymbolData(A);
 
   MCSectionData const *SectionData = Fragment->getParent();
 
@@ -703,7 +703,7 @@ void WinCOFFObjectWriter::RecordRelocation(const MCAssembler &Asm,
 
   if (SymB) {
     const MCSymbol *B = &SymB->getSymbol();
-    MCSymbolData &B_SD = Asm.getSymbolData(*B);
+    const MCSymbolData &B_SD = Asm.getSymbolData(*B);
     if (!B_SD.getFragment())
       Asm.getContext().FatalError(
           Fixup.getLoc(),