Move SILGlobalVariable::dump out of line.

...so that it doesn't get emitted into every TU that imports the header.

Author: jrose-apple

include/swift/SIL/SILGlobalVariable.h

@@ -163,7 +163,10 @@ class SILGlobalVariable
 
   /// Pretty-print the variable.
   void dump(bool Verbose) const;
-  void dump() const LLVM_ATTRIBUTE_USED { dump(false); }
+  /// Pretty-print the variable.
+  ///
+  /// This is a separate entry point for ease of debugging.
+  void dump() const LLVM_ATTRIBUTE_USED;
 
   /// Pretty-print the variable to the designated stream as a 'sil_global'
   /// definition.

lib/SIL/SILPrinter.cpp

@@ -2126,6 +2126,9 @@ void SILGlobalVariable::print(llvm::raw_ostream &OS, bool Verbose) const {
 void SILGlobalVariable::dump(bool Verbose) const {
   print(llvm::errs(), Verbose);
 }
+void SILGlobalVariable::dump() const {
+   dump(false);
+}
 
 void SILGlobalVariable::printName(raw_ostream &OS) const {
   OS << "@" << Name;