Suppress compiler warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78246 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/utils/TableGen/AsmWriterEmitter.cpp b/utils/TableGen/AsmWriterEmitter.cpp
index de4ec226fc1d15b1ecddbaaa139339910e5efbc2..974c334651b969e288e1b25255e90a69b2115760 100644 (file)
--- a/utils/TableGen/AsmWriterEmitter.cpp
+++ b/utils/TableGen/AsmWriterEmitter.cpp
@@ -728,7 +728,9 @@ void AsmWriterEmitter::run(raw_ostream &O) {
     << "  if (Bits == 0) return false;\n"
     << "  O << AsmStrs+(Bits & " << (1 << AsmStrBits)-1 << ");\n\n";
 
-  O << "  unsigned OperandColumn = 1;\n\n";
+  // This variable may be unused, suppress build warnings.
+  O << "  unsigned OperandColumn = 1;\n";
+  O << "  (void) OperandColumn;\n\n";
 
   // Output the table driven operand information.
   BitsLeft = 32-AsmStrBits;