Add 'const' qualifier to some arrays.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186312 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/CodeGenTarget.cpp b/utils/TableGen/CodeGenTarget.cpp
index a85ad09..b2c883d 100644
--- a/utils/TableGen/CodeGenTarget.cpp
+++ b/utils/TableGen/CodeGenTarget.cpp
@@ -298,7 +298,7 @@
 /// target, ordered by their enum value.
 void CodeGenTarget::ComputeInstrsByEnum() const {
   // The ordering here must match the ordering in TargetOpcodes.h.
-  const char *const FixedInstrs[] = {
+  static const char *const FixedInstrs[] = {
     "PHI",
     "INLINEASM",
     "PROLOG_LABEL",