Do a sweep of symbol internalization. NFC.

llvm-svn: 369803
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 126c70e..032074b 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -1078,8 +1078,8 @@
   return 1;
 }
 
-MachineBasicBlock *emitReadCycleWidePseudo(MachineInstr &MI,
-                                           MachineBasicBlock *BB) {
+static MachineBasicBlock *emitReadCycleWidePseudo(MachineInstr &MI,
+                                                  MachineBasicBlock *BB) {
   assert(MI.getOpcode() == RISCV::ReadCycleWide && "Unexpected instruction");
 
   // To read the 64-bit cycle CSR on a 32-bit target, we read the two halves.