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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207124 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 1 deletions

diff --git a/include/llvm/MC/MCAssembler.h b/include/llvm/MC/MCAssembler.h
index 26c26c977d..9c7733c83b 100644
--- a/include/llvm/MC/MCAssembler.h
+++ b/include/llvm/MC/MCAssembler.h
@@ -1207,7 +1207,13 @@ public:
     return SymbolMap.lookup(&Symbol) != nullptr;
   }
 
-  MCSymbolData &getSymbolData(const MCSymbol &Symbol) const {
+  MCSymbolData &getSymbolData(const MCSymbol &Symbol) {
+    MCSymbolData *Entry = SymbolMap.lookup(&Symbol);
+    assert(Entry && "Missing symbol data!");
+    return *Entry;
+  }
+
+  const MCSymbolData &getSymbolData(const MCSymbol &Symbol) const {
     MCSymbolData *Entry = SymbolMap.lookup(&Symbol);
     assert(Entry && "Missing symbol data!");
     return *Entry;